Java Developers Para Contratação - Página 8
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Mostrando 839 resultados
Freelancers Patrocinados
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exequiel12ifran exequiel12ifran
$35 Dólares / hora
Web & Mobile | React, Vue, Shopify, WP, OpenAIArgentinaI have 8+ years of experience with expertise in Solana, Rust, Python, PHP, and modern JavaScript frameworks like React and Vue.js, as well as cross-platform mobile development using Flutter and React Native. I specialize in building high-performance decentralized applications, scalable web platforms, and mobile apps...I have 8+ years of experience with expertise in Solana, Rust, Python, PHP, and modern JavaScript frameworks like React and Vue.js, as well as cross-platform mobile development using Flutter and React Native. I specialize in building high-performance decentralized applications, scalable web platforms, and mobile apps that deliver real value. From smart contract development on Solana with Rust, to robust backend systems in PHP and Python, and dynamic mobile and web frontends, I bring a full-stack skill set that bridges blockchain, web, and mobile technologies. I’m also experienced with CMS platforms like WordPress and eCommerce solutions such as Shopify, enabling me to deliver complete end-to-end digital solutions. With a strong focus on code quality, performance, and clear communication, I ensure smooth project execution and client satisfaction. Whether you’re looking to develop a DeFi protocol, a scalable mobile app, a dynamic frontend UI, or a fully customized CMS site, I have the expertise to turn your vision into reality. menos
Contratar exequiel12ifran
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⭐⭐⭐⭐⭐ NinjaTrader, MT4/5, TradingView, IBKR, QuantConnect, AI Trading ⭐⭐⭐⭐⭐ Turn your ideas and strategies into resilient trading systems that perform reliably beyond backtests and market cycles. I design systems to stay consistent across market regimes, withstand noise, slippage, latency, and partial...⭐⭐⭐⭐⭐ NinjaTrader, MT4/5, TradingView, IBKR, QuantConnect, AI Trading ⭐⭐⭐⭐⭐ Turn your ideas and strategies into resilient trading systems that perform reliably beyond backtests and market cycles. I design systems to stay consistent across market regimes, withstand noise, slippage, latency, and partial fills, avoid overfitting, degrade gracefully when assumptions fail, and handle real-world edge cases like gaps, spikes, and low liquidity. ✅ Trading Platforms & Execution • NT7 / NT8 strategies, indicators, trading panels, licensing • MT4 / MT5 indicators, Expert Advisors, Tickstory & QuantDataManager (99.90% backtests) • TradingView Pine Script indicators, strategies, screeners, alert webhook bridge • MultiCharts, QuantTower, Sierra Chart, Thinkorswim, Charles Schwab • IBKR TWS & IB Gateway API trading ✅ Backtesting & Quant Research • QuantConnect, VectorBT, Backtrader strategy backtesting, risk analysis • AI / RL strategy development (SB3, Gymnasium, SAC / PPO / A2C) ✅ Risk Analysis & Risk Management • Pre-trade risk checks (position limits, leverage) • Real-time P&L, drawdown & exposure monitoring with kill switches • Liquidity & execution risk (slippage, widening spread, commission, exchange fee) • Strategy risk validation (overfitting detection, walk-forward testing) ✅ Market Data & APIs • Stock market API integration & subscription cost optimization (IQFeed, DxFeed, Massive, AlphaVantage) ✅ Infrastructure & Data Systems • Time-series databases & tools: QuestDB, InfluxDB, TimescaleDB, ClickHouse, kdb+, • Kafka, Redis, Grafana ✅ Products & Monitoring • Trading product licensing • Copy trading systems • Trading performance monitoring dashboards ✅ Visualization & UX • Charting applications in C# Avalonia ✅ Sustainability & Discipline • Consistency, eyesight protection, and burnout-avoidance guidance ==================================================================================== "I believe the current trade I am in will be a loser ... a big loser at that." Larry Williams "Throughout all my years of investing I've found that the big money was never made in the buying or the selling. The big money was made in the waiting." Jesse Livermore "Don’t focus on making money, focus on protecting what you have." Paul Tudor Jones "Losing is extremely important. Winning’s easy. Losing is the key to trading." John Moulton "In trading, you have to be defensive and aggressive at the same time. If you are not aggressive, you are not going to make money, and if you are not defensive, you are not going to keep the money." Ray Dalio "Amateurs think about how much money they can make. Professionals think about how much money they could lose." Jack Schwager menos
Contratar Pyyetru
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I provide complete IT services tailored to modern business needs, with a strong focus on Blockchain development, Artificial Intelligence, Machine Learning, Big Data, Web and Mobile app development, E-commerce platforms, and custom software solutions. I specialize in blockchain technologies including DEXs, DApps,...I provide complete IT services tailored to modern business needs, with a strong focus on Blockchain development, Artificial Intelligence, Machine Learning, Big Data, Web and Mobile app development, E-commerce platforms, and custom software solutions. I specialize in blockchain technologies including DEXs, DApps, NFTs, Web3, smart contracts, and DeFi applications across platforms like Ethereum, BSC, and Polygon. For web and mobile development, I work with Java, Python, PHP, and top JavaScript frameworks such as React.js, Node.js, Angular, and Vue.js—alongside mobile technologies like Flutter and React Native. My e-commerce solutions are built on platforms like WooCommerce, Shopify, and Magento, while my AI and machine learning services leverage tools such as TensorFlow and AWS to create intelligent, data-driven systems. If you're looking for secure blockchain integration, modern web and mobile development, scalable e-commerce systems, or custom AI-driven software, I’m here to help turn your ideas into powerful digital products. menos
Contratar ma557
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I am a backend developer and AI Engineer with a deep passion for building intelligent, scalable, and high-performance systems. My expertise spans Python and Node js - from developing clean REST APIs with FastAPI, Django or Express, to architecting robust backend infrastructures that power real-world applications. As...I am a backend developer and AI Engineer with a deep passion for building intelligent, scalable, and high-performance systems. My expertise spans Python and Node js - from developing clean REST APIs with FastAPI, Django or Express, to architecting robust backend infrastructures that power real-world applications. As an AI Engineer, I specialize in transforming data into smart, deployable solutions-including LLM-powered assistants, RAG-based knowledge systems, and automation pipelines. I love blending machine learning, NLP, and real-time AI inference with practical backend implementations. Core Skills: Backend: Python, FastAPI, Django, Flask, Express, NestJS, Laravel, ASP.NET AI: Langchain, OpenAI API, Tensorflow, PyTorch, NLP, LLM, RAG systems Database: Postgresql, MySQL, Mongodb, Mariadb, Supabase, Firebase DevOps: Redis, Docker, AWS, WebSocekts, CI/CD menos
Contratar rogelitoc
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Java, Desenvolvimento de Software, Desenvolvimento Web, Desenvolvimento de Back-end, Desenvolvimento de APII’m full stack IT expert specializing in Django, Flask, and FastAPI, with expertise in AI, Machine Learning (ML), and Web Automation to deliver innovative, scalable solutions. 🏆 Winner of contest: AirPlay 2 Integration on OpenWRT What I Offer: ✅ AI & ML Solutions – Custom ChatBots, NLP, generative AI models ✅ AI...I’m full stack IT expert specializing in Django, Flask, and FastAPI, with expertise in AI, Machine Learning (ML), and Web Automation to deliver innovative, scalable solutions. 🏆 Winner of contest: AirPlay 2 Integration on OpenWRT What I Offer: ✅ AI & ML Solutions – Custom ChatBots, NLP, generative AI models ✅ AI Agent and Workflows Development ✅ Web & Desktop Applications – Scalable, secure & efficient solutions ✅ Automation & Web Scraping – Data extraction, workflow automation ✅ API Development – RESTful & GraphQL APIs using Django DRF & FastAPI ✅ Cloud & DevOps – Deployments on AWS, GCP, Docker, Kubernetes ✅ Frontend Development – React, Vue.js, and modern UI frameworks ✅ Mobile Application Development. My Tech Stack: ✅ Languages: Python, JavaScript,, Dart, Java, Swift ✅ Backend: Django, Flask, FastAPI, Nest ✅ Frontend: React, Vue.js, Next.js, Angular ✅ Databases: PostgreSQL, MongoDB ✅ DevOps: Docker, Kubernetes, AWS, GCP ✅ ML & AI: PyTorch, Scikit-learn, OpenAI Why Work With Me? ✔ 20 years of experience delivering high-quality projects ✔ Remote collaboration expert – seamless teamwork across time zones ✔ Results-driven approach – focus on business growth & innovation Let’s build something extraordinary together! Message me to discuss your project! menos
Contratar mengw3
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Arquitetura de software, Programação C#, Programação C++ , Programação C, Área de trabalho do WindowsProfessional software developer with over 25 years of overall experience in software development and maintenance looking for challenge projects fit my skills. Main specialization: • developing Windows Desktop and Web solutions (mainly using C, C++, C#, ASP.NET) • converting/translating/porting code from one...Professional software developer with over 25 years of overall experience in software development and maintenance looking for challenge projects fit my skills. Main specialization: • developing Windows Desktop and Web solutions (mainly using C, C++, C#, ASP.NET) • converting/translating/porting code from one programming language to another programming language. • writing wrappers around miscellaneous libraries, packages and SDKs, mainly for using it with other programming languages. • consuming HTTP based APIs, (RESTful APIs, etc) • scraping data from web sites, both with and without Selenium Secondary specialization: • developing Linux and cross-platform solutions and utilities. • scripts/utilities to process Excel spreadsheets • Microsoft Office Automation menos
Contratar vano101
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Hi there, Fullstack Software Engineer with expertise in building scalable platforms and secure distributed applications. Strong background in TypeScript/JavaScript and Python technologies and frameworks, with exposure to Java-based systems; fluent with API architectures (GraphQL & REST). Proven at optimizing systems...Hi there, Fullstack Software Engineer with expertise in building scalable platforms and secure distributed applications. Strong background in TypeScript/JavaScript and Python technologies and frameworks, with exposure to Java-based systems; fluent with API architectures (GraphQL & REST). Proven at optimizing systems for reliability, caching, and low-latency data flows using clean architecture and SOLID principles. My work spans a range of industries and use cases, from internal platforms to SaaS products and automation tools. I bring strong expertise in clean architecture, cloud infrastructure, and API-driven development. In addition to core development, I have hands-on experience integrating ERPs, CRMa, e-commerce platforms, and logistics/WMS systems, including automation and sync tools. I also have a strong foundation in cybersecurity, cloud deployment, and containerization (Docker, Kubernetes). ¶ Skills & Expertise ✅ Languages & Frameworks: TypeScript, JavaScript, Python, NestJS, Node.js, Django, Flask, React, Next.js ✅ Backend & API Development: REST, GraphQL, Webhooks, Microservices ✅ Frontend: ReactJS, Next.js, Vue.js, TailwindCSS, Angular ✅ Databases: MongoDB, PostgreSQL, MySQL, Redis, SQLite ✅ Cloud & DevOps: AWS, GCP, Docker, Kubernetes, Git, CI/CD ✅ Integrations: NetSuite, Salesforce, Shopify, WMS/Logistics platforms ✅ Security: Web security, penetration testing, vulnerability assessment ✅ Other Tools: Celigo, Firebase, RabbitMQ, Jira, Trello ✅ Soft Skills: Strong communication, clean code, agile workflow, solution-oriented menos
Contratar hishamyum
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Welcome to CodeTasker | Your Website, Mobile App & Software Development Partner... We will convert ideas into reality :) Our list of services is endless, but here are a few to show you our full work scope: • Android Native Mobile App Development (Java, Kotlin, Flutter) • IOS Native Mobile App Development...Welcome to CodeTasker | Your Website, Mobile App & Software Development Partner... We will convert ideas into reality :) Our list of services is endless, but here are a few to show you our full work scope: • Android Native Mobile App Development (Java, Kotlin, Flutter) • IOS Native Mobile App Development (Swift, Swift UI, Flutter) • Mobile App Designing (Graphic Design, UI/UX Design) • Web App Development (JavaScript, HTML, React JS) • Web Development (PHP, JavaScript) • Flutter Cross-Platform Mobile and Web App Development (Dart, Flutter, Android, IOS) • Amazon Web Services • Database (SQLite, MySQL) • Website Development in WordPress & Shopify Additional Services : -Arduino, m5Stack coding, Web Scraping in Python, Mobile App Marketing. -Digital Marketing & SEO, 3D Designs, Interior & Exterior Designs, AutoCad. We pride ourselves on a professional attitude that leads to consistent, impressive work. If you have questions or are interested in working with us, shoot us a message! Thanks!! Codetasker Team menos
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I'm a software developer with over 10 years of experience working with different kind of companies. I help create applications that improve business processes and I support startups to materialize their ideas. I lead a multidisciplinary team with designers, communicators and developers in my own company and we have...I'm a software developer with over 10 years of experience working with different kind of companies. I help create applications that improve business processes and I support startups to materialize their ideas. I lead a multidisciplinary team with designers, communicators and developers in my own company and we have extensive experience with techologies such as ReactJS, React Native, Android, Angular, Java, Laravel/PHP, Postgresql, MySQL, Javascript, Services RESTful Web and Websockets, MsAccess Management, Template Development for the CMS Wordpress and Development, etc. Additionally, I have strong expertise in software architecture, designing the infrastructure that companies need to scale their applications—particularly for ERP and CRM systems—using platforms like AWS and Docker. menos
Contratar boldan94
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ShahinurMithun ShahinurMithun
$55 Dólares / hora
Top-Rated & Rehired | We Build What WorksBangladeshFounded on a passion for solving complex business challenges through technology, OrFactor has delivered mission-critical solutions for clients in 25+ countries, including the USA, UK, Canada, Australia, Germany, France, the Netherlands, and Norway. Over the years, we’ve grown into a global team of 70+ specialized...Founded on a passion for solving complex business challenges through technology, OrFactor has delivered mission-critical solutions for clients in 25+ countries, including the USA, UK, Canada, Australia, Germany, France, the Netherlands, and Norway. Over the years, we’ve grown into a global team of 70+ specialized engineers with a 100% project completion rate — we finish what we start. Our expertise spans custom software development, enterprise integration, cloud transformation, DevOps, and data-driven digital solutions, all managed with precision, transparency, and a results-first mindset. From startups to Fortune 500 enterprises, our mission remains simple: build scalable, high-impact solutions that help clients innovate faster, reduce risk, and achieve measurable success. ⚡ Why Clients Trust Us ✅ 70+ specialized engineers • 21 years experience • 500+ projects delivered ✅ ZERO abandonment—100% completion guarantee ✅ Free 1-hour consultation • Dedicated PM • Daily updates ✅ 1 month FREE maintenance • NDA ready • 100% code ownership ✅ Deliver 2 weeks early (average) • Crystal-clear English • 24/7 support 💼 Our Expertise ✅ Custom Website Development ✅ Mobile App Development ✅ E-commerce Solutions ✅ Enterprise Software & SaaS ✅ API Development & Integration ✅ Cloud Infrastructure & DevOps ✅ AI/ML Integration ✅ UI/UX Design ✅ CMS & Content Platforms ✅ Database Design & Optimization ✅ Security & Compliance ✅ Maintenance & Support 🛠️ Technical Stack Frontend: React • Next.js • Vue.js • Angular • TypeScript • Tailwind CSS • Bootstrap Backend: Node.js • Python (Django) • PHP (Laravel) • Java (Spring Boot) • .NET Core • Ruby on Rails • Perl Mobile: Flutter • React Native • iOS (Swift) • Android (Kotlin) Database: PostgreSQL • MySQL • MongoDB • Redis • Firebase Cloud/DevOps: AWS • Google Cloud • Azure • Docker • Kubernetes AI/ML: OpenAI/Claude API • TensorFlow • Custom Chatbots Security: OWASP • GDPR • PCI-DSS • HIPAA Your project deserves a partner who cares. Whether you're launching a startup, scaling a business, or transforming operations—we're here to make it happen. Team OrFactor | Your Partner in Engineering Excellence Since 2004 menos
Contratar ShahinurMithun
