Java Developers à embaucher à United States
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Freelances parrainés
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Embaucher diektech
Exceed Your Expectation! Let's Do It Together!! We are a team of experienced Mobile App & Web Developers with over 10+ years in delivering high-quality digital solutions. Our expertise spans mobile and web development, backend integration, automated testing, UI/UX design, and performance optimization. We build...Exceed Your Expectation! Let's Do It Together!! We are a team of experienced Mobile App & Web Developers with over 10+ years in delivering high-quality digital solutions. Our expertise spans mobile and web development, backend integration, automated testing, UI/UX design, and performance optimization. We build scalable, secure, and intuitive applications tailored to business needs. Core services: – AI Automation – Custom mobile & web app development – E-commerce platform development (Shopify, Bigcommerce, Woocommerce, Magento) – Blockchain dApp development – User-focused UI/UX design – Backend integration & automation – App optimization & performance monitoring – Security, testing & CI/CD pipelines We collaborate closely with clients to turn ideas into impactful products, staying up to date with the latest tech and trends. Whether launching a new product or improving an existing one, we bring the skill and dedication to help your business succeed. moins -
Embaucher 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. moins -
Embaucher johnnier3
Hi, I'm Johnnie Reece, a Preferred Freelancer and senior full-stack, mobile & emerging tech expert with 10+ years delivering enterprise-grade, high-performance solutions for startups and Fortune 500 companies. Core expertise and current tech stack: - Frontend & Web: React, Next.js (App Router, Server Actions),...Hi, I'm Johnnie Reece, a Preferred Freelancer and senior full-stack, mobile & emerging tech expert with 10+ years delivering enterprise-grade, high-performance solutions for startups and Fortune 500 companies. Core expertise and current tech stack: - Frontend & Web: React, Next.js (App Router, Server Actions), Angular, TypeScript, Tailwind CSS, Redux Toolkit, React Query, Zustand, shadcn/ui - Mobile: React Native, Flutter, Expo, Firebase — cross-platform iOS/Android apps with native feel; Java (native Android development, legacy support & integrations) - Backend & APIs: Node.js (NestJS, Express), Java (Spring Boot, Hibernate, Jakarta EE), C# .NET 8/9, ASP.NET Core, EF Core, SignalR, gRPC; Python (FastAPI, Django, Flask) - CMS & E-commerce: Shopify (themes, apps, Liquid, API integrations, headless/Headless Commerce), WordPress, WooCommerce, Elementor — custom themes/plugins, secure & optimized sites - Blockchain: Solidity, Ethereum, Smart Contracts, Web3.js, Ethers.js, Hardhat — dApps, NFTs, DeFi - Automation: Python (Selenium, Scrapy), RPA, Zapier/n8n/Make.com, custom bots & AI tools - Cloud & DevOps: AWS (Lambda, ECS/Fargate, RDS, S3, Cognito, CDK), Docker, Terraform, GitHub Actions, CI/CD What I deliver – every project: ✅ Pixel-perfect, responsive web & mobile apps (98–100 Lighthouse scores) ✅ Native-feeling cross-platform mobile solutions (React Native + Flutter) + native Android with Java ✅ Secure, scalable backends (Node.js/NestJS, Java/Spring Boot, .NET/Python) with real-time features, OAuth2, PCI compliance, microservices & enterprise integrations ✅ High-performance Shopify stores (custom themes, private/public apps, Liquid development, API integrations, headless setups) + WordPress/WooCommerce sites & custom plugins ✅ Blockchain dApps, smart contracts & Web3 integrations ✅ Automation bots, scraping, workflows & cost-saving optimizations ✅ Full-cycle development: analysis → architecture → MVP → deployment → support ✅ Smooth legacy migrations to modern stacks (React/Next + mobile + Node.js/Java/.NET/Python + AWS) ✅ Auto-scaling, cost-optimized infrastructure with 99.99%+ uptime My approach: I act as your technical partner, daily updates with live demos, direct access (no middlemen), proactive advice on architecture, performance, security & costs. Code is clean, documented, and built for long-term maintainability & easy handoff. Clients return because I deliver faster, cleaner, more reliably — with zero surprises and maximum value. Ready to launch your project with a verified Preferred Freelancer skilled in web, mobile, Shopify, WordPress, blockchain, automation, cloud & full-stack Node.js/NestJS development? Message me now! I reply fast and can start immediately. Let's create something exceptional! moins -
Embaucher ChainBotSolution
ChainBotSolution ChainBotSolution
$65 USD / heure
Ranking Among the Top 1% of Software DevelopersUnited StatesChainbot Solutions is a Maryland-based custom software development company specializing in creating innovative and tailored solutions. We excel in transforming complex ideas into robust, scalable software applications.Chainbot Solutions is a Maryland-based custom software development company specializing in creating innovative and tailored solutions. We excel in transforming complex ideas into robust, scalable software applications. moins -
Embaucher AlexDeveloper911
AlexDeveloper911 AlexDeveloper911
$40 USD / heure
- - - Software Engineer, Not a coder - - -United States**AI SaaS Engineer | GPT Integration | Full-Stack Product Builder** Most applications work in demos - but break under real users. I build production-ready SaaS platforms and AI-powered systems that are designed to scale, handle real traffic, and deliver business value. With 10+ years of experience, I’ve worked on...**AI SaaS Engineer | GPT Integration | Full-Stack Product Builder** Most applications work in demos - but break under real users. I build production-ready SaaS platforms and AI-powered systems that are designed to scale, handle real traffic, and deliver business value. With 10+ years of experience, I’ve worked on real-world systems including automation platforms, API-driven backends, and full-stack SaaS products used by active users. 🚀 **What I build** **AI SaaS Systems** * GPT-powered features (chat, automation, copilots) * Multi-tenant architecture (RBAC, subscriptions, analytics) * Scalable backend systems (Node.js, PostgreSQL, MongoDB) **Customer Support & Chat Systems** * AI chatbots with context, memory & human handoff * Real-time messaging systems (WebSockets) * Automation workflows (routing, tagging, escalation) **Full-Stack Applications** * React / Next.js frontends * API-first backend architecture * Stripe subscriptions & payment systems ⚙️ **Tech Stack** React, Next.js, Node.js, TypeScript, OpenAI, PostgreSQL, MongoDB, AWS, Docker 💡 I don’t just build features - I design systems that are scalable, maintainable, and ready for real business use. If you’re building an AI SaaS product, chatbot, or automation system - I can help you launch it properly. moins -
Embaucher mengw3
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...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! moins -
Embaucher Hubready
I don’t just write code — I build systems that work in the real world. I’m a senior Full-Stack & AI Engineer with extensive experience designing, building, and scaling production-grade software across AI automation, SaaS platforms, data pipelines, and high-volume e-commerce systems. I approach every project with both...I don’t just write code — I build systems that work in the real world. I’m a senior Full-Stack & AI Engineer with extensive experience designing, building, and scaling production-grade software across AI automation, SaaS platforms, data pipelines, and high-volume e-commerce systems. I 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 I do best – AI & Automation • LLM integrations (OpenAI, RAG pipelines, embeddings, copilots) • Intelligent workflow automation and data processing • AI-powered internal tools and dashboards – 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 I work • Clear communication and structured milestones • Production-ready code — no shortcuts or fragile builds • Proactive technical guidance when I 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. moins -
Embaucher EdNoriega
At NTSprint, we’re passionate about creating tailor-made software solutions that drive online growth. Our team of talented engineers brings over 10 years of extensive experience to the table. Whether you need web or mobile app development, database solutions, or UX/UI design, we’ve got you covered. We work closely...At NTSprint, we’re passionate about creating tailor-made software solutions that drive online growth. Our team of talented engineers brings over 10 years of extensive experience to the table. Whether you need web or mobile app development, database solutions, or UX/UI design, we’ve got you covered. We work closely with our clients to create clear specifications covering functionality, look and feel, and non-functional requirements (such as performance and scalability). We follow the Scrum methodology, and we keep our project owners on the loop via Slack or Teams being online and responsive during US office hours. Our expertise covers a wide range of technologies and skills: • Website Design: We transform specifications into beautiful mobile and web designs that captivate users and leave an unforgettable first impression. • Backend Development: Whether on the cloud or on-premises, we excel in AWS, Azure, and Google Cloud. • API Development: Our expertise extends to .NET, .NET Core, Node.js, PHP, and more. • Frontend Development: We build interfaces using Angular, React, and other JavaScript frameworks. • Mobile Development: We work with native and hybrid technologies. Quality is our priority. Our experienced quality assurance team rigorously tests various scenarios before end-users interact with the product. We excel at overcoming challenges and approach every project with boundless enthusiasm to assist you! moins -
Embaucher arhamsoftltd
arhamsoftltd arhamsoftltd
$65 USD / heure
Award-Winning ISO-Certified IT firm | Among Top 1%United States: ArhamSoft LLC is an ISO-certified software development company, proudly serving clients worldwide since 2007. With a strong presence across the USA, UK, Germany, UAE, and Saudi Arabia, we have delivered innovative, scalable, and business-driven solutions to organizations of all sizes. Over the years, we have had...: ArhamSoft LLC is an ISO-certified software development company, proudly serving clients worldwide since 2007. With a strong presence across the USA, UK, Germany, UAE, and Saudi Arabia, we have delivered innovative, scalable, and business-driven solutions to organizations of all sizes. Over the years, we have had the privilege of working with Fortune 500 companies, helping them achieve digital transformation with efficiency and excellence. As trusted technology partners, we hold official partnerships with Odoo, Salesforce, and Microsoft, enabling us to deliver cutting-edge solutions powered by the latest tools and platforms. With a team of dedicated professionals and a proven track record across industries, ArhamSoft continues to empower businesses with ERP systems, custom software, AI/ML, mobile applications, and enterprise-grade solutions that drive growth and long-term success. Our Expertise: - Artificial Intelligence (AI), Machine Learning (ML), and Natural Language Processing (NLP) - Blockchain & Web3 Solutions - Mobile App Development (iOS & Android) - Web Development & Custom SaaS Platforms - ERP & CRM Solutions (Odoo, Salesforce, Microsoft Dynamics) - Cloud Computing & Enterprise Software Integration & : - Presidential Award for Best Software Company - Clutch Top IT Service Provider - Pakistan Digital Award (PDA) 2021 - P@SHA ICT Award Winner (2021) - LCCI Best Software House Award & - ISO 9001:2015 Quality Management Systems - ISO 27001:2013 Information Security Management Salesforce Partner: https://appexchange.salesforce.com/appxConsultingListingDetail?listingId=a0NHu00000p0vBtMAI Odoo Partner: https://www.odoo.com/partners/arhamsoft-13313341 Microsoft Partner ? ISO Certified for Quality & Information Security Official Odoo, Microsoft & Salesforce Partner 18+ Years of Proven Industry Experience with 500+ global clients 100% Client Satisfaction Rate backed by long-term partnerships 230+ In-house Skilled Resources across AI, Web, Mobile, and Blockchain Full-Cycle IT Services: From strategy & development to deployment & support Proven Expertise in Complex, Enterprise-Scale Projects Strong QA & Security Practices ensuring compliance and reliability Customer-Centric Approach with transparent communication Agile & Scalable Delivery Models to fit startups, SMEs, and enterprises Award-Winning Company recognized for innovation & excellence : Looking to bring your next big idea to life or optimize your business with advanced technology? Lets make it happen together. Contact us today and discover how ArhamSoft can become your trusted technology partner. moins -
Embaucher herculesn4
I have been working on the Javascript & PHP for 10 + years and I'm a professional FullStack Programmer. For this time I've been working on a lot of Database and Web projects for many different companies in the world. My core competency is mainly in the Database(Microsoft SQL, MySQL), the backend of Laravel &...I have been working on the Javascript & PHP for 10 + years and I'm a professional FullStack Programmer. For this time I've been working on a lot of Database and Web projects for many different companies in the world. My core competency is mainly in the Database(Microsoft SQL, MySQL), the backend of Laravel & Node.js/Express JS and on the frontend of AngularJS, ReactJS & Vue.js. I've ever worked for building ecommerce platform with Full-Stack using Magento. My career was built as a Full-Stack web developer with AngularJS, React, NodeJS. With the increase of amazing, fast and productive Javascript frameworks, I changed the focus of my professional career five years ago to become an expert in React-Native, Flutter(Dart) and Ionic Mobile development and Native mobile application development. My Strengths and skills I prefer to develop those Web technologies as: - Microsoft SQL, MySQL/MariaDB, Redis, CouchDB, HBase, MongoDB - SOAP, RESTful API - ASP.NET, C# CodeIgniter - PHP, JavaScript, JQuery, React, Vue, Bootstrap, AngularJS - React Native, Flutter, Ionic + AngularJS, Framework7, Cordova, Xarmarin - Cassandra, Nginx, Apache - Familiar with Firebase, Amazon, Google API, Twilio API, Azure moins
