Desenvolvimento de Back-end Jobs

Desejo lançar um site em que qualquer pessoa possa anunciar e comprar itens colecionáveis usados, com foco inicial em action figures, brinquedos, livros e quadrinhos. Preciso que a plataforma permita cadastro rápido de produtos, fotos múltiplas, descrição detalhada e busca por filtros simples (categoria, preço, estado de conservação). Funcionalidades indispensáveis: • Sistema de avaliação e comentários, para que compradores avaliem vendedores depois de cada transação. • Opções de pagamento integradas, com confirmação automática. • Mensagens diretas entre vendedores e compradores, mantendo o histórico dentro do site. Valorizo...

I need an electronic version of D4 medical assessment forms. These forms should be: - Web-based application - Auto-populated with patient's name and contact details before consultation - Filled out during consultations - Printable and signable Ideal skills and experience: - Experience in developing web-based applications - Familiarity with form automation and data handling - Strong understanding of user authentication systems (to be discussed)

I’m ready to take my i-gaming operation to the next level with a full-scale casino aggregator engine and I need a developer or team that can deliver a production-ready platform from the ground up. Core scope The build must seamlessly pull in third-party casino content through robust game integration, manage players efficiently with a secure user management system, and handle deposits, withdrawals, and reconciliations via fault-tolerant payment processing. Beyond those essentials, I also require risk management controls to flag suspicious behaviour, clean and well-commented API documentation for future partners, effortless support for multiple domains, and a white-label-ready architecture. Everything has to respond beautifully on mobile as well as desktop. Key deliverables &bull...

We are looking to hire experienced freelancers to help build a next-generation AI-powered camera management system for a camera business that is moving from traditional operations to a more advanced, centralized, and intelligent platform. The objective is to develop a scalable solution that can support multi-camera monitoring, AI-based body scanning, behavior tracking, vehicle number plate recognition, drone integrations, real-time alerts, and secure admin control. The platform should be designed for future growth and long-term operational use. This is not a basic prototype — we are looking for professionals who have worked on relevant, production-level systems. Project Scope The system will include, but is not limited to, the following capabilities: 1. Live camera streaming and re...

Title: Shopify Technical Fix: Catalog Automation, Homepage Video & UI Cleanup Project Description: I need a highly skilled Shopify Technical Specialist to fix and clean up a flooring store with 900+ products. The previous developer left the backend in a mess with manual collections and incorrect naming. I need an expert to implement professional automation and fix specific UI bugs. Key Technical Tasks: Catalog & Data Cleanup: Use the Shopify Bulk Editor (or CSV) to correctly assign the 'Product Type' (e.g., LVT, Wood Flooring, Tiles, Accessories) to all 900+ products. Automated Collection Logic: Rebuild all store collections using Automated Logic (Product Type matches Category). Ensure "Wood Effect Tiles" are filtered OUT of "Real Wood" collections...

I’m building a small-scale e-commerce demo and need someone who can put together an eye-catching, interactive storefront with just enough backend logic to prove the concept. Scope • Modern, responsive UI that showcases sample products with images, descriptions, price, and inventory status. • Lightweight checkout flow: cart, address and payment forms, but the payment step can stop at a confirmation screen—no real gateway hookup for now. • Basic database layer to store products and capture mock orders so I can review them in an admin view or via simple SQL queries. • Clean code structure that I can later extend into a full production build. Tech is flexible—React, Vue, or a templated PHP/Node stack all work for me as long as the final site loads ...

I already have a working front-end codebase; what I’m missing is a solid back-end powered by Sanity. I need an admin panel wired to that CMS and then everything deployed to a live environment. Key features the panel must expose to editors: • Content management • Analytics dashboard For permissions, keep things simple—open access for every authenticated user is fine; no role hierarchy is required right now. Once the panel is complete, I’d like a clean deployment pipeline set up (build, environment variables, and hosting). Choose the hosting platform you’re most comfortable with; I only care that pushing to the main branch ships the latest version without manual steps. Deliverables will be: 1. Sanity schema and project configured to match my exis...

Hi, I am an agent for are currently seeking talented developers to build our company website and school management programs. Eligible candidates should have over 5 years of development experience and possess the following skills: • Frontend Developer • Backend Developer • Blockchain Developer • Golang Developer • DevOps Engineer Requirements: • 5-8 years of hands-on experience in software development • Proven experience building school business agents and applications utilizing LLMs, frameworks, and APIs • Ability to explain complex concepts clearly and empathetically • A portfolio showcasing technical content such as documentation, tutorials, blog posts, videos, or sample projects that demonstrate both depth and approachability • Strong ...

- Data Processing Associate - Backend Executive - Sports Data Updating - Data Feed Analyst - Account Executive (Tally+GST+Excel)

I need a top-tier engineer to build a private mobile-API sniper able to claim 2- and 3-letter Instagram usernames faster than anyone else. The solution has to run against both Android and iOS endpoints and must never touch browser automation. Here is the performance bar I expect: the service should comfortably sustain more than 1,000 requests per second while keeping end-to-end latency below 50 ms. To achieve that you may architect a multi-threaded runner, spin up geographically distributed workers, or use any other creative optimisation—so long as the target numbers are met in real-world tests. Signature encryption, device fingerprinting, and the dreaded 429 rate limits all need to be bypassed with a custom-built approach rather than off-the-shelf libraries. Once a username is sec...

Laravel + Filament Backend Developer — Reservation System Project Overview We are building a reservation management dashboard using Laravel and Filament, and we're looking for an experienced backend developer to join us for this task.. The system handles reservations, customers, organizations, deposits, and payments — and we need help extending it with new integrations and features.. Tech Stack Backend: Laravel (PHP) Admin Panel: Filament Database: PostgreSQL Scope of Work 1. Onboarding Get familiar with the existing system architecture, codebase, and conventions. Review current modules: reservations, customers, organizations, deposits, payments. Set up the local development environment. 2. Paymob Payment Integration Implement Paymob authentication (API key exchange...

Project: Reconfigure Backend to New Database (Laravel + Node + WebSockets) I have a mobile app (APK) that was previously working, but after server changes, key features stopped working (messages, calls, wallet updates). I will be moving to a new clean database, so this task is focused on reconfiguring the backend to work correctly with it. Scope of work: - Configure backend to connect and operate with a new database - Ensure database structure matches what the APK expects - Verify and fix Laravel ".env" configuration - Check server environment (PHP, Node.js, MySQL, Nginx) - Ensure queue workers and real-time event broadcasting are working - Verify WebSocket server is handling events correctly - Test full data flow (app → backend → broadcast → app) Important: ...

Hi, I am an agent for are currently seeking talented developers to build our company website and school management programs. Eligible candidates should have over 5 years of development experience and possess the following skills: • Frontend Developer • Backend Developer • Blockchain Developer • Golang Developer • DevOps Engineer Requirements: • 5-8 years of hands-on experience in software development • Proven experience building school business agents and applications utilizing LLMs, frameworks, and APIs • Ability to explain complex concepts clearly and empathetically • A portfolio showcasing technical content such as documentation, tutorials, blog posts, videos, or sample projects that demonstrate both depth and approachability • Str...

I need a complete, production-ready e-commerce website built from the ground up. The project covers everything from setting up the back-end architecture to delivering a polished, responsive front-end that works flawlessly on desktop and mobile. You’re free to recommend the platform—whether that ends up being Shopify, WooCommerce, Magento, or another stack that better fits the brief—but your choice must balance scalability, ease of management, and long-term cost efficiency. I’m looking for clean, maintainable code, modern UI/UX standards, and a checkout flow that converts smoothly. Key deliverables • Full storefront with product catalog, search, filtering, and variant handling • Secure payment gateway integration (major cards + PayPal/Apple Pay/Go...

I am building a web-based, number-driven gaming platform that feels bright and colorful on every screen yet remains lightweight enough to load instantly on mid-range Android phones. Core features I need you to deliver: • Phone-number + OTP registration and secure login • Player wallet with UPI-QR deposits, balance updates, and a withdrawal request flow that I can confirm manually or semi-automatically • Intuitive number-selection screen where users pick their numbers and submit entries in just a few taps • Result module that lets me publish winning numbers on schedule or enter them manually, then pushes notifications and updates leaderboards • Comprehensive history pages for past draws and each user’s activity • Responsive admin panel to view ...

I'm looking to develop a comprehensive fleet intelligence SaaS platform that will support both web and mobile applications. The backend should be built using Node.js. Key Features: - Real-time GPS tracking - Risk scoring engine - Driver performance analytics - Trip analytics with detailed reports - Map-based UI (using Mapbox/googlemap) - Scalable backend -Familiar with API keys integration. Reporting Requirements: - Driver performance reports - Trip efficiency reports Ideal Skills and Experience: - Proficiency in Node.js - Experience with Mapbox integration - Strong background in developing scalable SaaS applications - Familiarity with analytics and reporting tools - Prior experience in building real-time tracking systems Please provide your portfolio and relevant experience. Lo...

All screens, flows, and assets for my medical-health app are already laid out in Figma; what I need now is the full build—iOS, Android, and the backend that ties them together. The scope covers everything from setting up user authentication through to submitting the binaries to the App Store and Google Play. Along the way the app must hook into three key integrations I’ve planned: • Payment gateways for subscription and one-off charges • Health data APIs so users can sync with Apple HealthKit / Google Fit out of the box • A real-time messaging system that supports secure in-app chat and push notifications I’ll share the complete Figma file plus a short functional spec the moment we kick off. Pixel-perfect implementation is important, but so is soli...

I need a straightforward yet reliable solution that lets me run several clinics from a single platform. Core workflow starts with a patient entry form that captures demographics and immediately opens a running history for each record. The history must log their medical conditions, previous appointments and current or past medications without fail; every new visit simply appends to that timeline so nothing is lost. Bookings will be handled through a list-view appointment module—speed is more important than a visual calendar—so staff can scan, add or modify slots quickly. Because the group owns more than one location, the system should recognise which clinic a booking belongs to and allow easy reassignment if a patient switches branches. On the mobile side I want companion apps...

I need a seasoned iOS engineer to wire full Stripe support into my Swift-based app. Your task covers both sides of the fence: • In the app: build clean, production-ready flows for payment processing and payouts using Stripe’s latest iOS SDK. The UI is already in place; hooks for card entry, Apple Pay and instant payout status simply need reliable Stripe logic behind them. • On the server: stand up a small, well-structured Node.js backend (Express is fine) that handles customer creation, payment intents, webhook handling, and payout scheduling. The mobile client should talk to it through lightweight, documented endpoints and all secrets must remain server-side. I’m interested in developers who have shipped several Stripe-to-iOS integrations before and can point me t...

The application already runs on a full MERN and next js. A full stack—frontend, backend, and database(Mongo DB) developer is needed to work on an existing project to patch existing features or develop new ones. The candidate must be able dive into this mixed code, understand it, and then push the project forward with fresh features. You will: • Review and refactor the current frontend, backend, and MongoDB layers so everything follows modern best practices. • Build any new React components, Node/Express endpoints, or database schemas we agree on. • Write unit / integration tests and update the README so another developer can spin the app up without guesswork. • Commit through Git with clear messages and create pull requests for each milestone so I can t...

I’m looking for a specialist who can deliver two tightly-connected pieces of work: I need a api or generator that generates coupons of linkedin 6 months business and 9 months sales navigator and it should work automated and in a proper and genuine way

Description: I need a bot that trades on Polymarket's "BTC price up/down in 5 minutes" binary markets. The bot will buy a "Yes" token when it predicts a price increase within the next 10 seconds, then sell immediately after a small upward tick — scalping tiny profits repeatedly. The model's output is the probability of a price rise in the next 10 seconds (not the full 5 minutes). Role: Full-stack ML engineer → data pipeline + LSTM/XGBoost model + backend API + frontend dashboard. Tasks: Ingest BTC spot price (1s or 1min), VIX, Polymarket token price, order book data Train LSTM or XGBoost to output probability of price increase in next 10 seconds Build FastAPI backend + simple frontend (Streamlit/React) Integrate with Polymarket CLOB API for li...

I am looking to develop a comprehensive real estate platform similar to , 99acres, and MagicBricks, with both a website and mobile application. The platform should be designed specifically for real estate builders and direct buyers, allowing seamless property discovery, virtual exploration, and end-to-end booking without intermediaries. Key features required: Advanced Property Listings: Display builder projects, plots, flats, and villas with complete details such as pricing, location, amenities, floor plans, and availability status (Available / Sold / Reserved). Live Inventory Management: A dynamic system where users can view real-time availability of plots or units, similar to seat selection in BookMyShow, including clear visual indicators for available, booked, and sold units. Virtual Si...

We are looking for a freelance PHP/Laravel backend developer to complete the core logic of our ticket‑resale platform, including a secure escrow system. The UI and a minimal backend foundation are already built — what we need now is a precise, reliable implementation that follows our specifications exactly. This is a budget‑conscious project, ideal for a developer who is efficient, disciplined, and comfortable delivering high‑impact features without unnecessary overhead. The escrow workflow is the core of our business model, so accuracy and reliability are essential. What we need: • Strong experience with PHP Laravel • Ability to implement transactional logic and escrow‑style flows • High attention to detail and strict adherence to specifications • Ability to i...

We are looking for an experienced developer to make some small change in the market research survey platform. Its on PHP laravel

My existing web application works, but the user journey feels clunky and the sign-in flow is unreliable. I want to give the whole front-end a minimalistic makeover that guides people through the site effortlessly, while simultaneously eliminating the authentication errors that keep popping up in the API. Here’s what I’m after: • UX/UI rebuild – a clean, stripped-back interface that prioritises easier navigation. Think clear hierarchy, generous whitespace, intuitive iconography, and responsive behaviour across desktop and mobile. You’re welcome to prototype in Figma or a similar tool before coding. • Front-end implementation – I’m comfortable with modern stacks (React, Vue, or similar). Whichever you choose, the final code should be modular, ...

My production web application needs a quick but thorough round of bug fixing and performance tuning. I am seeing issues on both the frontend and the backend, so I need someone who can dive into each layer without disrupting the current architecture. Current pain points • Slow page load times that appear to stem from heavy assets and sluggish database queries • Occasional UI glitches in the layout that throw off the design, plus responsiveness problems on tablets and some mobile devices Your mission Track down and resolve the offending code, tighten up any slow queries or inefficient API interactions, and make sure the interface looks and behaves correctly across modern browsers and major devices. Deliverables 1. Clean, well-commented fixes for the identified frontend...

On my Shopify Plus store I need tight control over what goes live. A product must not be published unless the following fields are filled out: the main Product Description, the Price, and the key Attribute specifics we maintain in metafields. The rule set is category–aware. For every item in the Electronics collection these checks should run automatically; other categories can continue to publish as they do today. If a merchant tries to save or publish an Electronics product that is missing any of those values, the system should block the action and return a clear error message in the admin. I am open to whichever method works best on Plus—Admin API validation, Shopify Flow, sectioned theme scripts, or a lightweight custom app—so long as the logic lives in the backe...

I need my existing booking form (see ) rebuilt as a streamlined, mobile-friendly, three-step WordPress form. All copy, field names, and the flat-rate tables are already organized inside three PDFs that I will supply as soon as we start. Step 1 must display 6 categories attach the correct flat-rate price to each category and depending on the number of rooms that customer choose, the price as soon as it is chosen, showing the running total before the user advances. Step 2 asking for 12 extra services if they need to select. Step 3 contact information and allows comments before submission and then sends a branded confirmation email to both the user and me. Please set the form up so I can adjust rates later from the WordPress dashboard. A clean back-end interface (Gravity Forms, WPForms, o...

I’m building a mobile learning app for school students in Odisha, so every screen and string must be available in Odia from day one. I’m open to either React Native or Flutter—whichever you feel lets you move fastest and stay maintainable—provided you have already launched at least one functioning app with it. Core scope The first release has to cover the essentials: secure user login / authentication, smooth in-app video playback that hooks to a simple backend or streaming service, and timely push notifications. Beyond that, I’d like an assignment-submission feature where learners can upload a file or photo for review. Deliverables • Cross-platform mobile app (Android primary) • Full Odia localisation (UI text and basic RTL/LTR consideratio...

Key deliverables: • Redesigned frontend that matches today’s UX standards and is fully responsive • Refactored or rewritten backend modules with clear, maintainable code and improved performance • Database scheme revisions or migrations that enhance speed, integrity and scalability • Deployment support plus concise documentation covering setup, configs, and any new workflows I value collaborative communication—brief check-ins, a shared repo for code reviews, and milestone builds I can test hands-on. If you have a track record of upgrading legacy web apps without downtime, let’s talk about timelines and the best toolset to get this done.

We are looking for a skilled and reliable Full Stack Developer to join our team for long-term collaboration. The ideal candidate should be able to handle both frontend and backend development efficiently. Responsibilities: Develop and maintain web applications (frontend + backend) Build responsive and user-friendly UI Design and manage databases Integrate APIs and third-party services Fix bugs and improve performance Work with team and meet deadlines Required Skills: Frontend: HTML, CSS, JavaScript (React / Vue / Angular) Backend: Node.js / PHP / Python Database: MySQL / MongoDB API integration (REST APIs) Git version control Preferred: Experience with MERN stack (MongoDB, Express, React, Node.js) Previous freelance or remote work experience Good communication skills Budget: Open to...

Basic Clinic Queue Management Tool with WhatsApp Integration (MVP) Description: We are looking to build a basic clinic queue management tool for internal use. This is a simple MVP focused on managing patient queue and reducing manual work. Not a complex system. Scope: 1. Patient Queue Management • Add patient (name, phone optional, shift) • Auto generate token number • View queue list • Mark next / skip patient • Basic status (waiting, in progress, completed) 2. Simple Dashboard • Patients today • Current token • Number of patients waiting 3. Token Display Screen • Show current token (large) • Show next few tokens • Auto refresh 4. WhatsApp Integration (basic) • Receive message from user • Cap...

We are building a next-generation freelancing platform and assembling a core startup team to build this product from the ground up. We are a Private Limited company, and every selected member will receive a legal agreement for their role, ensuring transparency and trust. What We Offer: Deferred salary (tracked monthly, paid yearly for the first 2 years) Legal documentation for payment and role security Equity (based on contribution) Long-term full-time opportunity with monthly salary after growth Real startup experience as a core team member Roles Open: Flutter Developer, Backend Developer (Firebase / Node.js), UI/UX Designer, Digital Marketing Specialist, Social Media Manager, Content Writer, Product Manager, QA Tester Marketing Focus: We are also looking for team members who can: ...

I have a Google Sheet that receives form responses and I need a lightweight Apps Script that steps in the moment a new row is added. The script should automatically inspect each incoming submission and stop any row that is missing required fields, alerting the user with a friendly toast pop-up or an email response so the data never reaches the main sheet incomplete. Here is what I expect: • A clean Apps Script bound to the spreadsheet, triggered on Form Submit, that checks the specific columns I identify as “required”. • Clear comments in the code so I can adjust the required-field list later without hunting through logic. • A brief hand-off note or Loom video showing how to enable the trigger, test the validation, and roll back if needed. If you have...

I need a small, self-hosted web application for a class project that lets students browse internship openings while giving companies and admins the tools they need to keep those listings current. The stack must stay within HTML, Java, PHP and MySQL so that I can run everything locally on my laptop (XAMPP/WAMP is fine). Core user roles • Students – browse and search internships, download study resources and review paid interview-prep details. • Companies – register / log in, post new internships, edit their own listings. • Admins – add or delete any internship and upload study resources; no company-account management features are required beyond what companies can already do for themselves. Main sections to build • Internship Opportunities: ca...

I need a concise, production-ready web solution built with FastAPI following a micro-services architecture. The project is strictly backend-focused: each service should expose clean, well-documented REST endpoints, handle its own data layer, and communicate with the others through lightweight HTTP or messaging where appropriate. I will provide the high-level domain model and the specific responsibilities of each service once we start. Your job is to translate those requirements into modular FastAPI code, wire up the routing, validation and dependency injection, and ensure that every service can be containerised for straightforward deployment. Please include basic automated tests and OpenAPI documentation generated by FastAPI itself so I can review functionality quickly in Postman or Swa...

I’m ready to turn my idea for a student-focused education app into a fully working Android application built with Flutter. The core of the product is simple: give students a clean space where they can take quizzes or assessments and keep track of their courses—all in one place. Here is the experience I’m after: • Quizzes & assessments – timed and untimed, with automatic scoring and a results screen. • Course management – a straightforward dashboard where a student can see enrolled courses, upcoming deadlines, and overall progress. Everything will run on Android only, so the project can stay tightly optimized for that platform. I need the complete Flutter codebase, an installable APK for testing, and brief setup instructions so I can build and...

Project Overview: We are a growing e-learning platform seeking an experienced full-stack development team or individual freelancer for an immediate Phase 1 upgrade of our portal. We are actively looking for a reliable technology partner for a long-term engagement, and this project will serve as our initial collaboration. Exisiting Tech Stack: PHP, Laravel, vue.js Project Scope (Phase 1): UI/UX Refinement: We will provide draft HTML wireframes and a high-level requirements log. We need your design input and expertise to finalize the ultimate UI/UX before implementation. Frontend Development: Implement updates across key user journeys, including site navigation, course detail pages, cart redesign, and post-purchase flows. Backend Integration: Update the Laravel backend to support the ne...

I have developed a Job Board Web Application where users can browse, search, and manage job listings through different dashboards. Live Website: Project Overview: This is a full-stack job portal designed to connect employers and job seekers. The platform includes separate dashboards for employers and administrators, allowing job posting, editing, and management. Key Features: - Job listing and filtering system - Employer dashboard to post and manage jobs - Admin dashboard for overall control and moderation - Dynamic job status handling (active, expired, etc.) - Clean and responsive UI for better user experience Tech Stack: - Frontend: , React, TypeScript - Backend: Node.js, MongoDB (Mongoose) - Other: LocalStorage session handling, modern UI components Examples: - Improve UI/UX design an...

I’m building a marketplace platform that connects buyers and sellers in a time-sensitive, inventory-driven environment. A version of the product has been partially developed, but the core logic and workflows were not properly implemented. I’m looking for a developer to review the existing codebase, determine what is usable, and complete the MVP with a clean, reliable structure. The platform involves routing buyer requests to multiple sellers, handling time-sensitive actions, and managing user states as interactions progress. This requires thoughtful system design, not just basic CRUD should be comfortable working with architectural decisions, asynchronous workflows, improving existing work, and ensuring the system behaves consistently under real-world use while building in a ...

保洁服务预约及管理系统 技术需求书 一、项目概述 1.1 项目核心目标 为保洁服务团队开发一套完整的线上预约及管理系统，实现客户全流程自助预约、订单全生命周期线上化管控、服务人员资源智能调度、内部运营自动化管理，全面优化客户预约体验，降低内部沟通与管理成本，提升团队运营效率。系统需适配多元客户群体，具备灵活的业务扩展能力，最终交付成果需支持一键部署至甲方指定的 Linux 服务器，可稳定落地使用。 1.2 项目适用范围 本系统覆盖保洁服务从客户预约、订单审批、人员调度、服务执行到财务统计的全业务流程，同时预留多业务线扩展能力，满足甲方未来业务拓展需求。 二、核心功能需求 2.1 客户端预约系统 语言适配：全站支持中英文双语无缝切换，所有页面文案、操作提示、通知内容均同步支持双语，满足中文及外籍客户的使用需求，语言切换操作便捷，设置可持久化保留。 设备适配：全页面采用响应式设计，在手机、平板、电脑等所有主流设备上均可正常浏览与操作，无排版错乱、功能失效、操作卡顿等问题。 品牌展示页：网站首页可展示公司简介、服务内容、团队优势、服务案例等品牌信息，所有展示内容支持后台编辑更新，无需修改系统底层。 全流程自助预约功能，需按以下逻辑顺畅流转： 服务类型选择：默认开放保洁服务，预留多服务类型扩展入口； 服务时间选择：可自主选择服务日期与具体时段，页面仅展示可预约的时段，不可预约时段明确标注且无法选择； 服务地址填写：可完整输入上门服务的地址信息； 户型选择：可选择对应服务的户型（如一居室、两居室、三居室等，选项支持后台灵活配置）； 特殊需求填写：可输入个性化服务要求、额外服务需求等补充信息； 服务人员偏好选择：可选择 “由团队统一安排服务人员”，或指定具体的服务师傅上门； 预约提交：信息填写完成后可一键提交预约，提交后系统自动生成唯一的订单编号，同步触发预约成...

We’re Cheeky-Fit (), a venture-backed AI fashion network — closet, social, styling, and marketplace in one app. Our iOS beta is live and we’re scaling fast. Looking for an experienced Full Stack Flutter/Dart developer for a long-term engagement. Our Stack (100% Dart) • Flutter (iOS live, Android next) • Dart backend (Cloud Functions / Dart Frog) • Firebase: Auth, Firestore, Storage, FCM, Security Rules • Google Cloud Platform • Stripe Connect (global marketplace payments) Scope of Work • Build and ship new Flutter features across closet, social, styling & marketplace • Launch the Android app • Extend our Dart backend and Cloud Functions • Stripe Connect flows: seller onboarding, payouts, KYC, payments • Fires...

Backend / Full-Stack Engineer (API + Integrations) Looking for a developer who can handle backend systems and properly connect them to the frontend. - Build and maintain backend APIs - Connect backend endpoints to the frontend correctly - Handle integrations (webhooks, external APIs) - Manage deployments and environment variables - Debug issues across frontend ↔ backend ↔ server - Comfortable working with: - GitHub - Netlify - Render - Deliver working features (not partial work) - Can debug issues independently - Clear communication - Moves fast and finishes tasks

I’m building a web platform whose core purpose is letting users trade stocks directly with one another and list their holdings for sale. In addition to stocks, I ultimately want the same peer-to-peer and sales flow to accommodate cryptocurrencies and foreign-exchange pairs, but the stock module is the milestone we’ll start with. Here is what I need delivered: • A secure, browser-based application (front-end + back-end) that allows user registration, KYC hooks, wallet/balance management, and two complementary flows—peer-to-peer trade matching and straightforward sales listings. • An order book or bulletin-board style interface where offers can be posted, searched, accepted, partially filled, or cancelled. • Transaction engine that locks the seller&rsqu...

Dancer entertainment private party booking app Scope of work — Build the mobile front-end exactly as described in the link, matching the user flows for browsing entertainers, checking availability and sending booking requests. — Set up the back-end/API so all data (profiles, schedules, messages, payments) syncs reliably in real time. Any secure, scalable stack is fine as long as it aligns with App Store and Play Store policies. — Integrate core app-store essentials: user authentication, push notifications and in-app purchase / payment handling where the brief calls for it. — Implement calendar-based availability and location awareness if you see them specified; if they are not in the brief, leave them modular so we can add them later. — Prepare ever...

Three-Tier Client Server Architecture in Distributed System ...3-tier architecture is a software design pattern that organizes an application into three logical, independent layers—Presentation, Application, and Data—improving scalability, security, and maintainability. It separates user interface, business logic, and data storage, allowing independent updates to each layer without disrupting the entire system

Three-Tier Client Server Architecture in Distributed System ...3-tier architecture is a software design pattern that organizes an application into three logical, independent layers—Presentation, Application, and Data—improving scalability, security, and maintainability. It separates user interface, business logic, and data storage, allowing independent updates to each layer without disrupting the entire system

We are looking for an experienced React & Node.js developer to build a small web-based application for internal use. The project involves creating a responsive frontend and a simple backend API. Project Overview: The application will allow users to submit and manage basic data through a dashboard interface. Key Features: User-friendly React frontend (responsive design) Node.js backend with REST APIs Form submission and data storage Dashboard to view and manage submitted data Basic validation and error handling Technical Requirements: React.js (Hooks preferred) Node.js with Basic database integration (MongoDB or similar) Clean, maintainable, and well-structured code Deliverables: Fully functional frontend + backend Source code with proper structur...

We are looking for an experienced developer to help troubleshoot and resolve an issue with our OpenAI API configuration. The API is currently not working as expected, and we need someone who can quickly identify the problem and implement a reliable fix. Responsibilities: Review current OpenAI API setup and configuration Identify and fix errors (authentication, endpoints, environment variables, etc.) Ensure API requests and responses are functioning correctly Test the integration thoroughly after fixing Provide brief documentation or explanation of the fix Requirements: Strong experience with OpenAI API integration Familiarity with API keys, environment variables, and debugging Experience with backend development (Node.js, Python, or similar) Ability to diagnose issues quickly