Java Developers para contratação em United States
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Mostrando 68 resultados
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Contratar kareemmaize
kareemmaize kareemmaize
$60 Dólares / hora
Principal AI Engineer | Full Stack EngineerUnited StatesDesenvolvimento de Aplicativos Móveis, Android, Desenvolvimento de Back-end, desenvolvimento Ágil, FlutterNeed an AI-powered platform or scalable MVP delivered on time? I specialize in turning complex ideas into secure, high-performance applications — with 10+ years in Full-Stack & AI Engineering. My Expertise: React/Next.js, Node.js/NestJS, Python, .NET, Laravel, Shopify, Wordpress, Squarespace | AI/ML Integration |...Need an AI-powered platform or scalable MVP delivered on time? I specialize in turning complex ideas into secure, high-performance applications — with 10+ years in Full-Stack & AI Engineering. My Expertise: React/Next.js, Node.js/NestJS, Python, .NET, Laravel, Shopify, Wordpress, Squarespace | AI/ML Integration | SaaS Platforms | High-Performance Web Apps What I Deliver: ✅ AI Solutions: Chatbots, recommendation engines, predictive analytics, biometric systems ✅ SaaS & MVP Development: From concept to launch in 4–8 weeks ✅ Full-Stack Apps: FinTech, EdTech, Sports-Betting, Web3 platforms ✅ Custom E-commerce: Shopify/Woocomerce/Squarespace development, migration, optimization ✅ Performance & Security: Clean code, scalable architecture, long-term maintainability Why Clients Choose Me: ✅ Hands-on ownership of complex builds from start to finish ✅ Clear communication with regular updates and transparency ✅ Business-focused approach — I align technical solutions with your goals ✅ Proven track record across 50+ projects with 95% client satisfaction Let’s Build Your Project: I offer a free 30-minute consultation to review your requirements and outline a technical roadmap. Message me with your project details to get started. menos -
Contratar Herculesz
Principal / Head AI Engineer with 25+ years of experience architecting and scaling complex software systems, now specializing in Large Language Models (LLMs), agentic workflows, and AI-first product development. Proven expertise in integrating OpenAI APIs, building RAG pipelines, and deploying scalable,...Principal / Head AI Engineer with 25+ years of experience architecting and scaling complex software systems, now specializing in Large Language Models (LLMs), agentic workflows, and AI-first product development. Proven expertise in integrating OpenAI APIs, building RAG pipelines, and deploying scalable, production-grade LLM features using LangChain, pgvector, Pinecone, and related technologies. Hands-on leader with a track record of transforming business workflows through intelligent systems—semantic search, AI copilots, and conversational agents—while maintaining rigorous engineering standards across DevOps, observability, and frontend/backend architecture. Deep experience in embedding optimization, prompt engineering, fine-tuning GPT models, and delivering generative AI(GenAI) products that drive measurable impact. Skilled in mentoring engineers, leading cross-functional AI initiatives, and aligning technical strategy with executive goals in fast-paced, innovation-driven environments. Passionate about building the next generation of human-centered AI systems. menos -
Contratar mengw3
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 Hubready
Hubready Hubready
$60 Dólares / hora
Web & Mobile Architect | Automation | AI SolutionsUnited StatesWe don’t just write code — we build systems that work in the real world. We are a senior Full-Stack & AI Engineering team with extensive experience designing, building, and scaling production-grade software across AI automation, SaaS platforms, data pipelines, and high-volume e-commerce systems. We approach every...We don’t just write code — we build systems that work in the real world. We are a senior Full-Stack & AI Engineering team with extensive experience designing, building, and scaling production-grade software across AI automation, SaaS platforms, data pipelines, and high-volume e-commerce systems. We approach every project with both an engineering and business mindset, ensuring solutions are not only technically sound but also practical, maintainable, and ROI-driven. ✓ What we do best – AI & Automation • LLM integrations (OpenAI, RAG pipelines, embeddings, copilots) • Intelligent workflow automation and data processing • AI-powered internal tools and dashboards • Zapier, n8n, Selenium, Python, Beautiful Soap • Stock trading algorithm/bot development for Schwab, E*TRADE, etc – Backend & Data Engineering • Custom APIs and event-driven architectures • PostgreSQL at scale (partitioning, optimization, analytics) • ETL pipelines across Shopify, Salesforce, ERP, and custom systems • Node.js, Python, TypeScript – Frontend Development & UX • Modern, responsive frontends built for real users • React, Next.js, and component-driven UI architecture • Data-heavy dashboards with performance in mind • Clean UI/UX that balances usability, speed, and clarity • Frontends tightly integrated with backend and analytics layers – Mobile App Development • Cross-platform mobile apps (iOS & Android) • React Native, Flutter, and modern mobile stacks • Secure API integration and real-time data sync • Apps designed for performance, stability, and growth – Cloud, DevOps & Reliability • Docker / Podman, CI/CD pipelines, secure deployments • Observability, logging, and performance tuning • Systems designed to scale without constant maintenance ✓ How we work • Clear communication and structured milestones • Production-ready code — no shortcuts or fragile builds • Proactive technical guidance when we see risks or better paths • Long-term thinking: solutions that grow with your business Clients bring me in when systems become too complex, too slow, or unreliable, or when an AI idea needs to become a real, production-ready product — not just a prototype. If you need a senior engineer who can own frontend, backend, data, and AI end-to-end, and deliver clean, scalable results — let’s build it right. menos -
Contratar leroyarvies
Yo, welcome to the zone where your app actually gets built, doesn't crash on mobile, and users don't rage-quit after 5 seconds. I'm the guy who turns "we need something cool" into "holy crap, this slaps" — on time, on budget, and with zero drama. What I bring to your project: Pixel-perfect, responsive frontends...Yo, welcome to the zone where your app actually gets built, doesn't crash on mobile, and users don't rage-quit after 5 seconds. I'm the guy who turns "we need something cool" into "holy crap, this slaps" — on time, on budget, and with zero drama. What I bring to your project: Pixel-perfect, responsive frontends (Next.js, TypeScript, Tailwind, React) that feel premium AF Seamless AI integrations (chatbots that actually help, not just hallucinate) Web3 wizardry: wallet connects, smart contracts, real-time on-chain data Clean mobile UX/UI from Figma → production (prototyping, flows that keep users coming back) Full-stack leadership experience: led teams at Scopic, shipped backend at Deluxe, built AI tools at PAAL AI Portfolio highlights: Trimlow Workout App → Modern fitness UI/UX in Figma + prototyping. Clean, motivating design that makes tracking workouts feel easy (no more "I'll start tomorrow" excuses). Gambit Markets → AI-powered crypto trading/betting platform. Converted Figma to blazing-fast Next.js frontend, hooked up Web3 wallets, real-time AI chat for user vibes, and smooth blockchain interactions. Clients say: "Fast responses, goes above and beyond, delivers great work" — just like that Tradeprint API plugin review, but for your next big thing 🚀 Available 24/7-ish in messages (sleep is optional when the code's flowing ☕). 100% commitment to quality, deadlines, and making your vision reality. #OnBudget #OnTime #HireMe #KeepSmiling (but mostly keep shipping) Ready to build something users won't ghost? Hit me up — let's make it happen. menos -
Contratar sagarn6
Software engineer with 13+ years building and testing scalable web and client/server applications. Deep expertise in Node.js, Python, JavaScript, and TypeScript, delivering modern backend services and REST/GraphQL APIs with strong architectural discipline. Proven full-stack capability using React, Vue, and Angular to...Software engineer with 13+ years building and testing scalable web and client/server applications. Deep expertise in Node.js, Python, JavaScript, and TypeScript, delivering modern backend services and REST/GraphQL APIs with strong architectural discipline. Proven full-stack capability using React, Vue, and Angular to create high-performance SPAs and responsive UIs with TailwindCSS/Bootstrap. Strong Python background for backend engineering, automation, and data/ML workloads on Linux/Unix. Hands-on AI/ML and LLM integrations using PyTorch/TensorFlow/Keras plus OpenAI and Stability AI APIs. Cloud-native delivery on AWS and Azure (compute, storage, messaging, monitoring, data services). Quality-focused with Jest, React Testing Library, and Cypress/Cucumber for CI-ready automation. Experienced in data visualization (D3, Plotly, Tableau), databases (SQL/NoSQL), optimization, migrations, and collaborative SDLC practices with Git and JIRA. menos -
Contratar codys29
I am a Senior Full-Stack Engineer with experience building scalable backend systems and modern web applications using Node.js, Python, Java, and React. My background includes working on high-traffic platforms and enterprise-grade systems, where I focused on API development, system integration, and production-ready...I am a Senior Full-Stack Engineer with experience building scalable backend systems and modern web applications using Node.js, Python, Java, and React. My background includes working on high-traffic platforms and enterprise-grade systems, where I focused on API development, system integration, and production-ready architecture. I specialize in building reliable backend services, integrating third-party platforms (ERP/CRM/payment systems), and delivering clean, maintainable code. I value clear communication, structured problem-solving, and long-term professional collaboration. Whether the project is a standalone API, a system integration, or a full-stack application, I focus on stability, scalability, and business impact. Available for remote contracts and long-term partnerships. menos -
Contratar danielu39
I help startups and enterprise teams turn complex ideas into production-ready SaaS platforms & App Services. I have been successfully operating as an independent consultant for over 20 years, and I have implemented and deployed many successful Software Solutions for my clients, as well as delivered in-depth analyses...I help startups and enterprise teams turn complex ideas into production-ready SaaS platforms & App Services. I have been successfully operating as an independent consultant for over 20 years, and I have implemented and deployed many successful Software Solutions for my clients, as well as delivered in-depth analyses that uncover actionable insights to streamline operations and sharpen strategic decisions across their organizations. Premium UX/UI Designer & E-Commerce Specialist with expertise in luxury brand aesthetics, conversion-focused design, and SEO optimization. Experienced in creating modern, high-performing online stores with intuitive user experiences, strong visual storytelling, and mobile-first responsive design for fashion and lifestyle brands. 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗪𝗼𝗿𝗸𝗲𝗱 𝗙𝗼𝗿: Telecom, Entertainment, Retail, Supply Chain, Agri-tech, Healthcare, Finance, Real estate etc. I have worked in the past for clients from accross the world (Esp: United States, Middle East, United Kingdom, Australia, Singapore). 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗣𝗿𝗼𝘃𝗶𝗱𝗲𝗱 🌟Software Product Strategy, 🌟SAAS Product Development, 🌟Enterprise architecture, 🌟Solution/ Technical/ Cloud Architecture, 🌟AI Product Management menos -
Contratar danielboggs
danielboggs danielboggs
$60 Dólares / hora
Exceed Your Expectation! Let's Do It Together!!United StatesWe deliver custom software solutions for startups, growing businesses, and modern enterprises that need reliable, scalable, and results-driven technology. With 10+ years of experience, our team builds and improves digital products across AI, web, mobile, e-commerce, blockchain, automation, and data systems. We...We deliver custom software solutions for startups, growing businesses, and modern enterprises that need reliable, scalable, and results-driven technology. With 10+ years of experience, our team builds and improves digital products across AI, web, mobile, e-commerce, blockchain, automation, and data systems. We support projects from planning and architecture to development, testing, deployment, and ongoing optimization. Our core expertise includes: • AI automation and business workflow systems • Custom web and mobile application development • E-commerce platforms and tailored store functionality • API development, backend integration, and system architecture • Blockchain applications and smart contract solutions • Data engineering, pipelines, and process automation • UI/UX-focused product implementation • Performance optimization, monitoring, and system improvement • QA, security, and CI/CD workflows We believe strong products come from clear communication, practical engineering, and consistent execution. Our goal is to deliver software that is not only functional, but dependable, maintainable, and ready for real business growth. menos -
Contratar allenm48
I’m a Senior Full Stack Developer with strong experience building scalable, high-performance web applications from concept to production. I specialize in modern JavaScript ecosystems, working extensively with React, Next.js, Node.js, and TypeScript, alongside backend technologies like Python and PostgreSQL. I focus...I’m a Senior Full Stack Developer with strong experience building scalable, high-performance web applications from concept to production. I specialize in modern JavaScript ecosystems, working extensively with React, Next.js, Node.js, and TypeScript, alongside backend technologies like Python and PostgreSQL. I focus on delivering clean architecture, maintainable code, and seamless user experiences, combining solid engineering principles with a strong eye for UI/UX. My experience spans developing SaaS platforms, e-commerce systems, dashboards, and AI-powered applications, often integrating cloud services such as AWS and automation tools to streamline workflows. I’m comfortable taking ownership of full product lifecycles—from rapid MVP prototyping to optimizing production systems for performance, security, and scalability. I prioritize writing efficient, testable code and building systems that are reliable under real-world conditions. menos
