API stands for Application Programming Interface, and it is an layer of interface that allows programs to interact with each other. An experienced API developer can build complex interactions between applications, making them faster, more reliable, and accurate. Whether you need a second opinion on your existing application or you want to create an entirely new application for your business, an expert API Developer can do the job for you.

An API Developer's job does not stop at developing. They can also work on design and implementation testing, guide through the entire architect process from prototyping to implementation, create custom system integration solution based on the project requirements, and collaborate with other teams to develop systems that meet customer expectations.

When hiring an API Developer through Freelancer.com, rest assured that they are as competent as any hired onsite software engineer.

Here’s some projects our experts have worked on:

  • Building custom interfaces to move large amounts of data efficiently between applications
  • Working with Javascript to allow websites to access external information relating to weather conditions
  • Creating Grafana dashboards for quick and easy visualization of data points
  • Developing scripts to connect external APIs with more heavy-duty platforms like Microsoft Azure
  • Debugging mobile apps involving fishing
  • Integrating AI capabilities into online shops
  • Automating regression tests so developers can work faster and more accurately

No matter what your business needs are in terms of API development, our expert freelancers are ready to take on the challenge and provide support whenever you need it. With expertise in debugging applications and web development, you're guaranteed to find the right developer for your project! So why wait? Post your project today at Freelancers.com and reap the benefits of working with an expert API Developer now!

A partir das avaliações de 168,261, os clientes avaliam nosso API Developers 4.9 de 5 estrelas.
Contratar API Developers

API stands for Application Programming Interface, and it is an layer of interface that allows programs to interact with each other. An experienced API developer can build complex interactions between applications, making them faster, more reliable, and accurate. Whether you need a second opinion on your existing application or you want to create an entirely new application for your business, an expert API Developer can do the job for you.

An API Developer's job does not stop at developing. They can also work on design and implementation testing, guide through the entire architect process from prototyping to implementation, create custom system integration solution based on the project requirements, and collaborate with other teams to develop systems that meet customer expectations.

When hiring an API Developer through Freelancer.com, rest assured that they are as competent as any hired onsite software engineer.

Here’s some projects our experts have worked on:

  • Building custom interfaces to move large amounts of data efficiently between applications
  • Working with Javascript to allow websites to access external information relating to weather conditions
  • Creating Grafana dashboards for quick and easy visualization of data points
  • Developing scripts to connect external APIs with more heavy-duty platforms like Microsoft Azure
  • Debugging mobile apps involving fishing
  • Integrating AI capabilities into online shops
  • Automating regression tests so developers can work faster and more accurately

No matter what your business needs are in terms of API development, our expert freelancers are ready to take on the challenge and provide support whenever you need it. With expertise in debugging applications and web development, you're guaranteed to find the right developer for your project! So why wait? Post your project today at Freelancers.com and reap the benefits of working with an expert API Developer now!

A partir das avaliações de 168,261, os clientes avaliam nosso API Developers 4.9 de 5 estrelas.
Contratar API Developers

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    86 trabalhos encontrados

    Meu sistema de leitura inteligente de documentos já está em operação e cobre cerca de 70 % do fluxo: a captura, o OCR e a extração por IA funcionam perfeitamente. Agora preciso concluir a última etapa do projeto para que o resultado chegue de forma limpa e automática ao laboratório Worklab (Criasoft). O que falta entregar: • Estruturar todos os dados extraídos em um payload único em JSON, padronizado e validado. • Criar uma lógica “De/Para” baseada em IA/algoritmo de aprendizado que reconheça cada exame lido e converta para o código que o Worklab aceita, permitindo fácil atualização futura de novos mapeamentos. • Consumir o Webservice/API d...

    €369 Average bid
    €369 Média
    103 ofertas

    Quero lançar uma fintech de pagamentos capaz de sustentar, desde o primeiro dia, o volume de transações de empresas digitais de porte médio. A prioridade é oferecer ao lojista uma única infraestrutura para processar Pix e cartões nacionais e internacionais — exatamente os métodos que meu público mais utiliza — sem perder de vista boletos e outros meios que poderão ser adicionados na mesma base tecnológica. A experiência precisa ser fluida para quem vende e para quem compra. Por isso, o projeto envolve: • checkout inteligente que se adapta ao dispositivo e à origem do tráfego • criação de links de pagamento em segundos, compartilháveis por qualquer ...

    €3191 Average bid
    €3191 Média
    55 ofertas

    Preciso de um desenvolvedor com experiência comprovada na API oficial do iFood. Já possuo um ERP próprio em PHP + MySQL. Preciso de acesso/configuração da API para integrar meu ERP ao iFood. Objetivos: - Enviar produtos do meu ERP para o cardápio do iFood - Atualizar preços dos produtos no iFood pelo ERP - Controlar disponibilidade/estoque dos produtos no iFood - Receber pedidos automaticamente no ERP - Obter detalhes dos itens vendidos - Atualizar status dos pedidos Importante: não preciso que desenvolva meu ERP. Preciso de alguém com experiência real na API do iFood para viabilizar acesso, credenciais, webhooks e orientação técnica.

    €115 Average bid
    €115 Média
    79 ofertas

    I have some sites with Stripe and PayPal already plugged in, yet I’m not completely sure the setup is rock-solid. I’m looking for a payments specialist to sanity-check everything and prove that money flows exactly as it should. Here’s what I need you to do: • Examine each WordPress installation or laravel etc, plugin, and gateway setting to confirm API keys, webhooks, currency, tax, and notification settings are all correct for both Stripe and PayPal. • Run test transactions for every scenario I offer—single product sales plus the membership options of Monthly subscriptions and One-time payments. Make sure charges go through, memberships activate, renewal/cancellation logic fires, and emails or receipts reach the customer. • Document every step. If s...

    €9 / hr Average bid
    €9 / hr Média
    207 ofertas

    I’m looking for a developer who can turn my existing buy/sell signals into a fully automated stock-market trading bot. The core requirement is simple: whenever a signal is fired the program must place, modify, and close positions on my brokerage account without manual intervention. Low-latency order routing, solid error handling, and detailed logging are all essential so I can audit every fill later. The signals will be supplied in real time from my current analytics stack (webhook or REST is fine), so the bot only needs to focus on trade execution rather than market analysis or portfolio optimisation. I’m flexible on language—Python, C#, or Node.js are all acceptable—as long as the final solution is stable and easy for me to maintain. Experience with APIs such as ...

    €85 Average bid
    €85 Média
    27 ofertas

    Project: Stripe Payment Integration with TermiteKiosk I operate a termite inspection business and use TermiteKiosk to create and deliver inspection reports. I am looking for an experienced Stripe and workflow automation specialist to set up a payment system that requires customers to pay before receiving their inspection report. Project Goals: • Integrate Stripe with my existing TermiteKiosk workflow. • Generate and send a Stripe payment link to customers after the inspection is completed. • Prevent inspection reports from being delivered until payment has been successfully received. • Once payment is confirmed, automatically release the report to the customer or trigger an automated email containing the report. • Minimize manual steps and create a reliable, easy-t...

    €376 Average bid
    €376 Média
    184 ofertas

    Quiero optimizar la atención de mi línea de WhatsApp. Recibo entre 1 y 50 mensajes diarios y deseo que cada uno obtenga una respuesta automática clara y coherente, sin intervención manual. Lo que necesito: • Configuración o implementación de un sistema de respuestas automáticas en WhatsApp (puedes usar WhatsApp Business, un bot basado en la API o la solución que mejor se adapte). • Plantillas de mensajes cortos y bien redactados que cubran las preguntas frecuentes de mis clientes. • Instrucciones sencillas para que yo pueda ajustar o actualizar los mensajes en el futuro si cambia la información. Entrego acceso a la cuenta de WhatsApp Business y la lista actual de consultas comunes; tú te encargas de ...

    €11 / hr Average bid
    €11 / hr Média
    56 ofertas

    I need a seasoned Python-Django developer to build a standalone web application that streamlines three critical workflows for our chemical plant: inventory management, laboratory data processing, and all reporting/compliance paperwork. Here’s what I’m after: • A clean Django back-end (Python 3.11 preferred) with models that accurately reflect our product SKUs, raw-material lots, test batches, and regulatory documents. • Automated lab-data capture screens and background routines that calculate specs, flag out-of-tolerance results, and store everything in a searchable archive. • Real-time inventory tracking with automatic unit-of-measure conversions, reorder alerts, and audit-ready lot traceability. • One-click generation of compliance reports (PDF/...

    €996 Average bid
    €996 Média
    211 ofertas

    I manually trade a multi-leg, intraday options strategy on the NIFTY and SENSEX indices and now want the entry and exit flow fully automated. The trade is triggered purely by price action read directly from the live option chain: once specific premium relationships line up, the script should enter the predefined set of legs and then monitor those same premiums to decide when to exit. No indicators or news feeds are involved—only real-time option chain prices. There are specific Risk Management rules in place like the fixed Stop Loss mechanism which has to be followed no matter what and on the basis of that the trading and entry and exit happens. Scope of work • Connect to my Indian broker’s API for live option chain data and order placement. • Continuously scan p...

    €110 Average bid
    €110 Média
    24 ofertas

    I’m ready to add an AI-powered chatbot to my site and need an expert who can quickly deploy Tidio, Botpress, or another comparable platform and leave it fully configured for future growth. What I need you to do: • Install and connect the chosen chatbot to my website, ensuring smooth embed and loading. • Tune it for customer support as the main objective. • Build flows that can: – Answer FAQs automatically, – Hand off to live chat agents when needed, – Collect customer feedback after each interaction. • Train the bot with my existing FAQ content (I’ll supply docs or links). • Set up an easy way for me to update answers or add new flows later, with clear written instructions. • Configure analytics so I can tra...

    €153 Average bid
    €153 Média
    278 ofertas
    Deploy Node App to Railway
    6 dias left
    Verificado

    I have a Node.js web application sitting in a private GitHub repository that I want running on Railway as soon as possible. The code is production-ready, but I haven’t connected the repo to Railway nor configured the required environment variables yet. I’ll give you repository access plus the variable values; your task is to hook the repo to Railway, set the variables in the dashboard, and confirm that the build completes and the service is reachable at the generated domain. A short note explaining the steps you took (so I can repeat them in future) will wrap things up.

    €84 Average bid
    €84 Média
    190 ofertas

    Job Description:
 We’re looking for a skilled and detail-oriented QA tester based in Singapore to help us test the API functionality of our payin and payout systems. You will play a key role in validating the reliability and accuracy of our payment processes, ensuring everything runs smoothly from start to finish. Scope of Work: * Conduct end-to-end testing of API-based payin and payout transactions * Monitor and record the full transaction process, including responses and behavior at each stage * Identify and report bugs or unexpected results with clear documentation * Work closely with developers to replicate issues and verify fixes * Offer suggestions to improve testing coverage and process reliability Requirements: * Must be physically located in Singapore (for regional paymen...

    €19 Average bid
    €19 Média
    18 ofertas
    WhatsApp Cloud API Automation
    6 dias left
    Verificado

    I need a small-scale platform built on the official WhatsApp Cloud API that automatically sends order-update messages to my customers. The flow should trigger from my existing system (a simple webhook is fine) and push status notifications—order confirmed, shipped, out for delivery, and delivered—without manual intervention. Beyond the push messages, I also want an AI-powered conversational layer so customers who reply can get immediate, relevant answers. When the AI reaches its limits, the chat must hand over cleanly to a live agent through an agent console or any lightweight web dashboard you provide. The agent should see the full history and be able to take over in real time, then return control to the bot once done. Key deliverables: • WhatsApp Cloud API integration ...

    €75 Average bid
    €75 Média
    60 ofertas

    Technical Execution & Leadership: Development & Architecture: Design, build, and maintain high-performance, clean, and reusable React code structures. Enforce optimal state management strategies across modules. Mentorship & Standards: If entering in a leadership capacity, guide junior frontend developers through robust code reviews, structured architecture alignment, and practical pair programming sessions. Performance Optimization: Audit and enhance application loading times, component rendering behavior, and maintain cross-browser styling and operational compatibility. Project & Scope Management: Break down intricate visual or business feature sets into structured, highly manageable Jira tasks while establishing concrete Level of Effort (LOE) estimates for technical spri...

    €17 Average bid
    €17 Média
    46 ofertas
    Playwright-Based Price Tracker
    6 dias left
    Verificado

    I already monitor a handful of well-known online retailers with Playwright scripts, but a recent round of site changes and Cloudflare tweaks has broken several of them. I need an investigator more than a scraper: someone who can step through the JavaScript, map new DOM paths, trace hidden XHR / fetch calls, and patch or rewrite the logic so pricing information is captured accurately again. What you will tackle • Analyse each failing script, identify why the price node or API endpoint now returns nothing, and document the root cause. • Reverse-engineer any new front-end obfuscation, lazy-loaded content, or anti-bot measures that stand in the way. • Where Cloudflare is involved, adjust Playwright settings or introduce lightweight work-arounds (rotate fingerprints, tweak...

    €90 Average bid
    €90 Média
    142 ofertas

    I need a standalone, web-based application that integrates with the WhatsApp API, Aisensy. The app should allow for sending and receiving messages, automating responses, and broadcast messaging. Key Requirements: - Web-based user interface - Integration with WhatsApp API for the specified capabilities - Standalone app, not requiring integration with existing systems Ideal Skills and Experience: - Proven experience with WhatsApp API - Strong web application development skills - Familiarity with automation and messaging systems

    €8 / hr Average bid
    €8 / hr Média
    63 ofertas

    Project Overview I already have a working OpenAlgo setup with broker integration, WebSocket, scheduler, and order execution. I need an experienced Python/OpenAlgo developer to implement a new strategy logic called **PMPS V2.0 (Progressive Momentum Pyramid Strategy)**. This is not a complete application development project. Existing OpenAlgo infrastructure is already available. Only strategy logic and position management need to be developed. Scope of Work Develop a production-grade multi-stock strategy that: * Runs continuously during market hours. * Supports multiple stocks simultaneously. * Maintains independent state for each stock. * Can be deployed on Oracle Cloud, AWS EC2, Docker, or PM2. * Persists state so that server restarts do not lose positions. --- ## Existing Component...

    €15 Average bid
    €15 Média
    25 ofertas

    I’m building a single bot that can take over my inbox end-to-end and I want to see it in action before I hire. The bot must handle three jobs seamlessly: send automated replies based on simple rule sets or GPT-style prompts, sort and label or folderize incoming mail for easy triage, and push out scheduled newsletters. It has to plug straight into Gmail, Outlook, and Yahoo Mail, so expect to work with their APIs/IMAP, OAuth flows, and rate limits. Language and framework are up to you—Python (FastAPI, Flask), Node.js, or anything else is fine as long as the code is clean and well-documented. When you apply, link me to a live or recorded demo that proves the core workflow across at least one of the three providers; I’ll shortlist only those who can show the bot actually ...

    €433 Average bid
    €433 Média
    196 ofertas
    Bulk Product Uploader App
    5 dias left
    Verificado

    I want a straightforward application that lets me upload large batches of physical products to my own WordPress site and—just as important—directly into WooCommerce and Alibaba. The goal is to drop in a CSV (or similar feed), map the columns once, and push everything live without touching each listing manually. Inventory tracking or stock-level sync is not required; the tool only has to create the listings with all essential details (title, description, price, images, categories, attributes and SEO fields when available). If you can structure it so future connectors—say Shopify or Magento—could be added later, all the better, but the immediate focus is WordPress / WooCommerce plus Alibaba. I’m comfortable running a web-based dashboard or a lightweight deskto...

    €88 Average bid
    €88 Média
    32 ofertas
    Modular Stock Trading Bot
    5 dias left
    Verificado

    I need an end-to-end, desktop-based trading bot written in Python that I can grow over time without touching the core code. The build will be fully modular: • Scanner – pulls live data through my broker’s API, filters by ATR, pullback, RVOL, sector and overall market direction. • Strategy Engine – applies 10-minute confirmation logic to the scanner output. • Execution Engine – routes qualified orders to Alpaca. • Risk Manager – hard SL, optional trailing stop, fixed $2 000 position size and a cap of two open trades at any moment. • Alert System – pushes trade and risk notifications straight to WhatsApp. • Trade Logger – stores every decision point so I can later train an AI model and bolt on a dashboard. ...

    €386 Average bid
    €386 Média
    96 ofertas

    I trade intraday single-leg option buying strategies on my Zerodha account and now want the entire workflow automated through Kite Connect. The system must log in with my API keys at market open, apply a concise set of technical indicators that I will define (simple moving averages, RSI and VWAP to start), and place CE or PE buy orders automatically when those rules line up. Beyond entry, I need the code to manage stop-loss, target and compulsory square-off well before the market close, while continuously updating positions and firing alerts to Telegram or e-mail. A toggle for live vs. paper trading is essential so I can fine-tune parameters without risking capital. Deliverables • Well-commented Python code that calls the official Kite Connect endpoints for order placement, mo...

    €246 Average bid
    €246 Média
    9 ofertas

    Necesito a una persona que se integre de forma continua con nuestro equipo para llevar la personalización y automatización dentro de Odoo al siguiente nivel e incorporar capacidades de inteligencia artificial en todas las áreas posibles. Qué espero que hagas • Revisar y mapear todos nuestros procesos de negocio actuales (inventarios, facturación, contabilidad, CRM y cualquier otro flujo operativo). • Diseñar un plan de automatización por fases que cubra desde pequeñas mejoras hasta la optimización completa del flujo «end-to-end». • Implementar reglas, flujos de trabajo y personalizaciones en Odoo (Studio, Python, XML, API REST) que reduzcan tareas manuales y errores. • Desarrollar o ...

    €15 / hr Average bid
    €15 / hr Média
    15 ofertas

    I need a standalone, web-based application that integrates with the WhatsApp API, Aisensy. The app should allow for sending and receiving messages, automating responses, and broadcast messaging. Key Requirements: - Web-based user interface - Integration with WhatsApp API for the specified capabilities - Standalone app, not requiring integration with existing systems Ideal Skills and Experience: - Proven experience with WhatsApp API - Strong web application development skills - Familiarity with automation and messaging systems

    €205 Average bid
    €205 Média
    81 ofertas

    I have a Twilio account ready, a small-business phone number purchased, and clients who need timely appointment reminders by SMS. What I’m missing is the technical glue that makes those reminders leave Twilio reliably and land on each customer’s handset. Setting this up in contest mode to share with me something that you have worked on this personally - I will not be awarding images or workflows. The goal is to discuss the requirements - workflow and move forward. Here’s what I need: • Configure my Twilio sender so it passes all required verifications and can send US-based SMS without filtering issues. • Provide a clean, well-commented script (Python, Node, or PHP—your choice) that takes basic parameters (name, date, time, phone) and fires the reminder ...

    €9 Average bid
    Garantido
    €9
    37 inscrições

    I need a small, reliable bot that can work on a freelance marketplace and quietly run my bidding process for me. The core job is simple but must be done well: • As new projects appear, the script scans the description, matches it against a set of keywords I will supply, and—if it finds a match—submits a tailored bid automatically. • After bidding, it keeps an eye on the project, adjusting or withdrawing the bid according to updated information or my predefined rules. • No client-messaging feature is required right now; accuracy and speed in bidding and smart monitoring are the priorities. You may use the marketplace’s public API if available, or fall back to headless automation with Selenium, Playwright, or Puppeteer—whichever is most stable. Pl...

    €122 Average bid
    €122 Média
    96 ofertas

    My Shopify store is ready to sell internationally; the missing piece is a reliable payment gateway that handles foreign cards and displays prices in multiple currencies. What I need done: • Connect and fully configure an international payment gateway inside my Shopify admin (PayPal, Stripe, or any other compatible option you recommend). • Enable Shopify’s multi-currency features so customers automatically see and pay in their local currency. • Run end-to-end test transactions to confirm successful authorisation, settlement, and accurate currency conversion. Acceptance criteria: shoppers from at least two different regions must be able to reach checkout, see the correct currency, pay, and receive an order confirmation without errors. Access to my Shopify da...

    €3 / hr Average bid
    €3 / hr Média
    20 ofertas

    I'm looking to integrate Zabbix, Grafana, GLPI using Victoria Matrix to execute alert and network management. The project involves connecting these systems to streamline data visualization, alert management, and asset management. - Integrate Zabbix for performance metrics, network events, and topology data synchronization. - Ensure seamless collaboration between Zabbix, Grafana, and GLPI. - Automate alerts and create unified dashboards for better oversight. Ideal skills include experience with hands on coding network databases like victoria matrix Zabbix, Grafana, and GLPI. Familiarity with coding and APIs and automation for these tools is crucial. Looking forward to your expertise to make this integration successful!

    €4 / hr Average bid
    €4 / hr Média
    11 ofertas

    Codeignitor expert If you're hiring someone to fix 12 pending issues in an e-commerce site built with CodeIgniter, PHP, MySQL, APIs, and AJAX, it helps to create a clear job description so candidates can accurately estimate effort and cost. Job Post Template Title: Senior CodeIgniter PHP Developer Needed to Fix E-commerce Website Issues Project Overview We have an existing e-commerce website built with CodeIgniter (CI), PHP, MySQL, AJAX, and third-party APIs. We need an experienced developer to diagnose and resolve approximately 12 outstanding issues affecting functionality, performance, and user experience. Required Skills Strong experience with CodeIgniter (please specify CI version) Advanced PHP development MySQL database design and troubleshooting AJAX and JavaScript/jQuery R...

    €7 / hr Average bid
    €7 / hr Média
    154 ofertas

    I’m building a Python / TypeScript research bot and need genuine Chainlink oracle prices—not the LINK token price. The goal is to pull one-minute historical candles and also keep a live feed of BTC/USD, ETH/USD, SOL/USD and, if available, XRP/USD. The work is split into three parts: 1. Pin down the right Chainlink product • Confirm whether the Chainlink Data Streams Candlestick API or the Data Streams SDK for signed, low-latency reports is the correct door to knock on. • Explain symbol coverage, look-back depth, typical latency, rate limits and any pricing tiers or quotas. 2. Secure access • Guide me through the paperwork or dashboards needed to obtain credentials or whitelist my IP. • Verify authentication with a quick test call. 3. ...

    €23 Average bid
    €23 Média
    68 ofertas

    Backend Python Engineer – Automation Pipeline & API Integration (No Frontend) Please read carefully: This is strictly a backend and infrastructure role. We run a scaling digital goods marketplace that sells premium subscription API keys. We are currently processing around 50 orders daily, and we need to completely automate our fulfillment pipeline so we can scale higher without manual bottlenecks. You will be building the "glue" that connects our isolated backend systems into one automated, high-concurrency lifecycle running on a Linux VPS with a MongoDB database. The Pipeline Architecture: You will be writing the Python logic that bridges these three existing endpoints: The Creation Tool: Our internal system that generates the raw web accounts. The API Generator...

    €399 Average bid
    €399 Média
    218 ofertas

    Perdí por completo el código fuente de mi aplicación Android y solo conservo el APK instalado en algunos dispositivos. Necesito recuperar un proyecto íntegro en Android Studio a partir de ese binario, con todo el código legible, los recursos ordenados y la posibilidad de compilarlo sin errores. La app hace un uso intensivo del teléfono (gestión de llamadas y sensores) y precisa acceso al GPS para su funcionamiento principal, por lo que el proyecto resultante debe conservar esas llamadas a la API de Android tal como funcionan hoy. El trabajo consiste en: • Descompilar el APK con herramientas como JADX, apktool o equivalentes. • Reconstruir la estructura del proyecto (módulos, Gradle, recursos, firmas). • Limp...

    €599 Average bid
    €599 Média
    114 ofertas

    I'm seeking a skilled developer to create a listing automation tool for eBay. The primary focus is on automating product uploads. Key Requirements: - Develop a tool to automate product uploads to eBay. - Ensure the tool is user-friendly and integrates seamlessly with eBay's existing platform. Ideal Skills and Experience: - Proven experience in developing automation tools, especially for e-commerce platforms. - Strong understanding of eBay's API and listing requirements. - Ability to create intuitive user interfaces. - Background in inventory management systems is a plus. Developer Brief — "The Reseller's Studio" → eBay-linked, high-volume listing platform 1. Summary I run a vintage clothing resale business listing on eBay UK at volume — ar...

    €519 Average bid
    €519 Média
    265 ofertas

    **Job Title: Senior Backend Engineer + Base44 or Marketplace Architect + Base44 Expert** **Job Description:** Join our team as a Senior Backend Engineer to enhance our marketplace platform. You'll work on integrating new features, optimizing performance, and ensuring scalability. Collaborate with our team to design and implement backend solutions that meet user needs. This role requires strong problem-solving skills and the ability to work independently. About the Project We are building EG marketplace. Our goal is to build a scalable, secure, and production-ready platform with a strong focus on merchant onboarding, payments, and long-term architecture. We are looking for a highly experienced engineer who can take ownership of the backend architecture and critical integrations w...

    €30 / hr Average bid
    €30 / hr Média
    117 ofertas
    Looking for Co - Partner
    3 dias left
    Verificado

    Looking for Technical Co-Founder (SaaS for SAP Users) About me I’m building a SaaS product targeting SAP customers — specifically those using SAP Cloud ALM — and I’m looking for a technical co-founder to build it with me. I will handle: • Business development • Sales and go-to-market • Customer acquisition You will own: • Product development • Technical architecture • Building the platform ________________________________________ The Problem SAP customers struggle with dashboards. Today, they either: • Use SAP Analytics Cloud → complex and slow to set up • Build custom solutions → expensive and hard to maintain The result: Most companies don’t get real value from their data. ______________________________...

    €41 Average bid
    €41 Média
    74 ofertas

    Binance Trading Bot Audit & Stabilization (Python / API / Hetzner) I am looking for an experienced developer to review, debug and stabilize an existing crypto trading bot infrastructure running on a Hetzner server. Current Setup Multiple trading strategies running on different ports Binance Spot API integration Python-based system Live and demo/paper trading modes Multi-port architecture Existing dashboard and automation system Current Problems The system was developed by another freelancer and currently has several issues, including: unexpected Binance Convert operations (USDC -> EUR) demo ports potentially interacting with live trading inconsistent behavior between ports reset/modified configurations during troubleshooting trade execution and logging inconsistencies need for p...

    €22 Average bid
    €22 Média
    55 ofertas

    Title: Crypto Trading Bot Developer (Python) Description: We are looking for an experienced developer to help build and improve an automated cryptocurrency trading bot. Responsibilities: Develop and maintain crypto trading strategies Integrate with exchange APIs (Binance, Bybit, OKX, etc.) Implement order management, risk controls, and position tracking Optimize bot performance and reliability Debug and improve existing trading systems Requirements: Strong Python experience Experience with cryptocurrency exchange APIs Experience building trading bots or algorithmic trading systems Familiarity with WebSockets, REST APIs, and real-time market data Knowledge of risk management and trading concepts Nice to Have: Experience with futures trading Experience with b...

    €29 / hr Average bid
    €29 / hr Média
    98 ofertas

    I run event-security operations and need Trello to act as a fast, desktop-based, multiscreen console where incoming messages are captured, triaged and dispatched in real time. The core of the job is to design card actions and Butler (or API) automations that will: • Pull new messages into a designated “Inbox” list. • Auto-tag and route each card to the correct security queue. • Trigger colour-coded alerts, SLA timers and escalation buttons. • Keep a clear audit trail while archiving resolved cards automatically. Because this console is shown across several monitors, I also need a script or lightweight app that opens specific board views on each screen and refreshes them without manual input. Deliverables 1. A fully configured Trello board with all...

    €430 Average bid
    €430 Média
    245 ofertas

    I already have a verified WhatsApp Business account; now I need the n8n workflow that lets me hold a real two-way conversation with users. The trigger is simple: whenever someone sends “Hi” or “Hello”, the workflow should pick up the message, send an initial reply, and then keep the channel open so everything said by either side continues to flow through n8n in real time. You will: • Connect my existing WhatsApp Business API to n8n, handling all webhooks and authentication. • Build and test the workflow so incoming “Hi/Hello” messages are captured, logged, and answered automatically. • Ensure further back-and-forth messages are relayed instantly both ways. • Comment the nodes clearly and export the finished workflow so I can re...

    €113 Average bid
    €113 Média
    37 ofertas

    I need a secure web application that lets Admin, Manager and Employee users complete and review daily checklists, attach evidence, and archive the results automatically. The stack should be React / on the front end, Node.js on the server side, with Supabase (PostgreSQL) handling auth and data. User roles - Admin - Manager - Employee Every role must be able to: - View checklists assigned to them - Upload photos or documents directly to a linked Google Drive folder - Generate a signed PDF summary of each completed checklist Core requirements • Role-based login with JWT or Supabase Auth and secure session handling. • Exact-location GPS capture when a checklist is opened and when it is submitted; coordinates stored with the record. • Google Drive API ...

    €334 Average bid
    €334 Média
    243 ofertas

    I have a Freshworks custom app that still uses axios for every ticket-related API request. To meet the latest marketplace guidelines I now have to route those calls through instead. Your task is to comb through the existing codebase, swap each axios call for an invokeTemplate implementation, add the corresponding templates to , and confirm that the app continues to fetch, create, or update ticket data exactly as before. The scope is limited to calls that touch the Tickets/issues endpoints; nothing else in the app needs refactoring. Once you are done I should be able to run fw run locally, see zero console warnings, and pass the platform validation checks. Deliverables: • Updated JavaScript files with axios fully removed • New or modified request templates in • Short ...

    €145 Average bid
    €145 Média
    131 ofertas

    I need an experienced .NET Core developer to plug full FASTag capability into my existing parking management platform. The RFID readers are already in place and streaming tag IDs; what’s missing is the software layer that talks to the FASTag service provider and folds those events into our business logic. Here is what the work entails: • Entry and exit processing – build secure REST endpoints that receive the tag read, validate it against the provider’s API, open the barrier, and persist the transaction with status codes for later audit. • Reconciliation and reporting – create automated, scheduler-driven jobs that pull settlement files, match them to our local ledger, flag discrepancies, and generate daily CSV-based reports. Beyond those core items, th...

    €241 Average bid
    €241 Média
    43 ofertas

    Job Description:
 We’re looking for a skilled and detail-oriented QA tester based in China to help us test the API functionality of our payin and payout systems. You will play a key role in validating the reliability and accuracy of our payment processes, ensuring everything runs smoothly from start to finish. Scope of Work: * Conduct end-to-end testing of API-based payin and payout transactions * Monitor and record the full transaction process, including responses and behavior at each stage * Identify and report bugs or unexpected results with clear documentation * Work closely with developers to replicate issues and verify fixes * Offer suggestions to improve testing coverage and process reliability Requirements: * Must be physically located in China (for regional payment flow t...

    €123 Average bid
    €123 Média
    17 ofertas

    Something in my checkout flow is breaking and I need a fresh set of eyes to track it down and eliminate it. The issue shows up during the actual checkout process—before payment completes—so customers never make it past that point. I’m not yet sure whether the culprit is a front-end script, a back-end validation rule, or a misfire between them; I simply know revenue is being blocked. You’ll dive into the live codebase, reproduce the failure, trace the root cause, and implement a clean, well-documented fix without disrupting any other part of the site. I can give you full access to a staging copy as well as error logs, version control, and any third-party payment gateway dashboards you need. Deliverables: • Pinpointed root cause with a brief explanation &bull...

    €198 Average bid
    €198 Média
    79 ofertas

    I have a single application that bundles both Bolt and Emergent and I need it fully deployed on my Hostinger Cloud account. The code is production-ready; what’s missing is a clean cloud setup so the whole stack runs smoothly in that environment. Here is what I expect: • Configure the Hostinger Cloud web hosting space, upload the Bolt/Emergent build, and make sure both frameworks run without conflicts. • Spin up and connect a fresh database instance inside Hostinger. I will provide credentials once the instance is prepared; you simply need to create the schema and link it to the app. • Handle any required environment variables, SSL certificates that Hostinger provides, and point everything to a temporary sub-domain I already own. Domain configuration isn’t p...

    €32 Average bid
    €32 Média
    44 ofertas
    Fix PHP Plugin Data Bug
    3 dias left
    Verificado

    Hi, I have a custom plugin i have made. The plugin allows people to purchase through our site and via API buys the product elsewhere then delivers the customer the product details, however the product details aren't being pulled through properly I have the API logs from the seller website and my code i just need small help with fixing why its not delivering

    €18 Average bid
    €18 Média
    129 ofertas

    I want an AI-driven outbound calls voice agent built entirely in n8n that focuses on sales assistance. Its single, clear function is to listen to callers, understand their needs, and provide real-time product recommendations back to them through natural-sounding voice responses. Scope of work • Design and implement the complete n8n workflow, including all decision nodes, data look-ups, and text-to-speech steps that turn caller intent into spoken product suggestions. • Connect the flow to my existing product catalog (JSON or REST API—whichever you find cleaner) so recommendations always pull live stock, pricing, and short descriptions. • Integrate a telephony layer that hands calls to n8n, passes the transcript into the workflow, and returns the synthesized reply t...

    €24 Average bid
    €24 Média
    20 ofertas

    PLEASE READ CAREFULLY WE ALREADY HAVE ALL GHL AUTOMATIONS ALREADY IN PLACE SO NO SETUP NÉEDED ON GHL SIDE THIS PROJECT INVOLVES CONNECTING CLAUDE WITH OUR AD ACCOUNTS AND GHL AIM IS TO AUTOMATE CAMPAIGNS CREATION AND MANAGEMENT I run a residential-and-commercial cleaning company in Sydney and I want to take our marketing stack to the next level. The goal is full campaign automation, from data flowing out of GoHighLevel to fresh ads going live and budgets being tuned without constant hand-holding. Here’s what I need you to set up: • Connect GoHighLevel with both Meta Ads Manager and Google Ads through API or webhooks so every new lead, tag change, or appointment instantly syncs to the ad platforms. • Layer Claude AI on top of that connection. Claude should p...

    €13 / hr Average bid
    €13 / hr Média
    131 ofertas
    Build Accounts Receivable Module
    3 dias left
    Verificado

    I’m extending our existing web-based application to cover the full accounts-receivable cycle. The new module must sit inside the current web app, so please plan your code to use the same tech stack, database, and authentication flow that is already in place. Core workflow • Finance reviews each quotation request that the team already creates in the system. • From that same screen Finance can produce a Invoice from system or from other application and upload the invoice against that quotation request and choose the due term (Net 0, 10, 30, 60, 90, 120). Support team will review it and click to send the invoice to client from application. • Issued invoices appear in a master list; any request that is still “uninvoiced” lives on its own page for quick fo...

    €126 Average bid
    €126 Média
    196 ofertas

    AI/ML Engineer This role is ideal for an engineer who wants end-to-end ownership of meaningful pieces of the platform, growth toward technical leadership, and direct impact on systems that unblock the next generation of AV capabilities. What You’ll Do Build high‑impact labeling experiences Design, implement, and test scalable, high‑performance user experiences and services using modern full‑stack and/or frontend technologies. You’ll ship features spanning multiple surface-areas that directly affect how quickly and accurately we can label data for new models and cities. Level up how ML teams work with data Develop automation and tooling that give ML engineers deep insight into labeling workflows and data quality (e.g., efficiency dashboards, auto‑QA, autolabel review tools), ...

    €33 / hr Average bid
    €33 / hr Média
    150 ofertas

    Je cherche un développeur spécialisé en backend, à l’aise avec Pine Script, pour créer un script TradingView visant l’automatisation complète de mes opérations de trading. Contexte Je dispose déjà de règles précises d’entrée et de sortie de position. J’ai besoin qu’elles soient intégrées dans Pine Script afin que TradingView déclenche automatiquement les ordres via webhooks. Ce que j’attends • Un code Pine Script clair, commenté et structuré. • Implémentation de mes conditions de trading : signaux d’achat/vente, gestion du risque, take-profit et stop-loss. • Paramètres ajustables (multip&eacut...

    €22 Average bid
    €22 Média
    28 ofertas

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