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I provide a Node.js Backend Developer team that ships production-grade SaaS, APIs and platforms. 11,000+ hours worked, 50+ Node.js Backend Developer projects delivered, 100% Job Success Score, Top Rated Plus. As CEO I scope and own every Node.js Backend Developer engagement we sign. I study the brief, run discovery with founders, match the right engineers and stay accountable for delivery. My team owns the code - I never touch it. So when a brief lands for a Backend Engineer, an API Developer or a full stack software engineer, I scope it and the team builds it. Why hire my team: - 20+ years of Node.js Backend Developer, Full Stack Developer and SaaS Developer delivery - 200+ Node.js Backend Developer and SaaS Developer projects shipped - Long-term clients on retainers (3 - 10+ years) Our Node.js Backend Developer team designs services, REST and GraphQL APIs, queues and event pipelines that hold up under real production load. A NestJS Developer on the team treats Node as a serious production runtime and owns the heavy backend modules. Typical engagements: multi-tenant SaaS APIs, real-time platforms, billing flows, data pipelines, AI-backed services. Stack: Node.js, NestJS, ExpressJS, TypeScript, PostgreSQL, Redis, Elasticsearch, AWS, GCP, Docker, Kubernetes. Our Full Stack Developer team owns systems end-to-end - one team handling Node.js services, React frontends, data models and infra. A React Node pairing is our default shape - a React Node frontend on a NestJS Developer backend, with a nextjs developer on SEO-critical pages. We replace fragmented setups where a website developer, web developer and front end specialist were stitched together. Adjacent angles I present daily: full stack developer saas for B2B platforms, python full stack developer pairings for data and AI, full stack developer ai integrations, full stack developer react teams for SaaS dashboards, full stack developer shopify extensions, full stack web developer rebuilds of legacy SPAs, full stack ai saas developer engagements where LLM features must ship at production standard. Our SaaS Developer team helps founders ship multi-tenant SaaS and B2B platforms. A SaaS Developer engagement covers auth and RBAC, Stripe billing, observability, anti-abuse and event tracking the saas marketing team can use. The team has shipped a webflow developer saas pairing, a b2b saas booking system developer engagement, a ui ux designer saas pipeline, a saas explainer video flow in onboarding and a saas sales console wired into the backend. On the API side a dedicated API Developer track owns contracts and versioning. A REST API Developer designs the REST API Developer surface - resources, pagination, idempotency, webhooks - and the API Developer keeps SDKs and docs honest. A Backend Engineer owns the data layer; a second Backend Engineer covers queues and workers so the API never blocks on jobs. Cross-language coverage. A python developer track owns scraping, ETL and AI workflows. python nodejs migrations land here when teams consolidate dual stacks. flutter node.js and vue.js node.js setups join the core when mobile or admin SPAs need a reactive layer. A react developer pairing handles SaaS dashboards on the API. A wordpress developer or shopify developer hand-off covers CMS migrations. A mobile app developer pairing extends the SaaS into iOS and Android. Clients hire me when they need: - a Node.js Backend Developer team that owns architecture, APIs and scaling - a back end developer node.js bench for high-traffic SaaS - a Full Stack Developer team replacing 3 - 5 contractors with one coherent system - a SaaS Developer team fluent in multi-tenancy, auth, billing and RBAC - an API Developer and Backend Engineer pair for a clean, versioned REST API Developer surface - a full stack software developer practice with CEO-level discipline on roadmaps - a website developer hand-off backed by the team Recent work my team shipped: - Cybersecurity SaaS. Node.js, NestJS, PostgreSQL, Redis on GCP + Kubernetes. 170M+ req/week, 500 RPS peaks, 1M+ MAU. - Device Verification SaaS. Single backend powering web, Telegram bot and Developer API. 4K+ DAU, 1M+ checks, 80%+ via API. - Clinic Enterprise platform. React, Next.js, Laravel, Node.js, Redis, AWS. REST API, queues, RBAC, 1C and lab integrations. MVP in 4 months for 500 patients/day, 500K records. - E-commerce Data Pipeline SaaS. 50M+ products, per-partner parsers, dedup. Cloud cost cut ~9x at sub-second search across 300 - 500K DAU. - Multi-currency Voting SaaS. Wallets, Stripe top-ups, real-time vote locking over WebSockets. 2M+ users in 10 countries, $2.5M+ revenue. Reliable SaaS comes from deliberate design - that's what my Node.js Backend Developer, Full Stack Developer and SaaS Developer team focuses on. Need a Node.js Backend Developer team, a Full Stack Developer team or a SaaS Developer partner that delivers on time and stays long-term - let's talk.

I help startups and businesses build scalable, full-stack web and mobile applications using Angular, Ionic (Capacitor), Node.js, and MongoDB. With over 10 years of experience delivering production systems, I lead projects from idea to launch — and beyond. I’ve served as a team lead, architect, and business analyst, scaling platforms to 400+ clients and helping startups grow to 100+ employees. My code is clean, maintainable, and focused on long-term success. 🧰 My core tech stack: Angular (SPA, modular architecture, RxJS, state management) Ionic Framework + Capacitor (cross-platform mobile apps) Node.js + Express.js (REST APIs, secure backend logic) MongoDB (schema design, performance optimization) CI/CD, Git, Monorepos (NX), DevOps basics 🧠 What sets me apart: 10+ years of production-grade delivery Full-stack ownership: frontend + backend + mobile Proven experience as tech/team lead in international projects Business-oriented thinking: I align features with user & company goals 📈 Past Projects Include: CRM and client portal for a B2B platform used by 400+ businesses (Canada) Mobile/web apps for a social startup (Sweden) serving parents and families Multiple eCommerce and event management platforms across Europe Let’s work together to launch or scale your next product — with clarity, speed, and real impact.

Hi! 🖐 Looking for a skilled MERN stack developer for your web development project? Look no further! The DevIT team is here to take all your tasks and deliver a perfect result! 💪 Our experienced developers are proficient in React.js, Node.js, MongoDB, and Express.js. We've built websites with dashboards of different kinds, web apps, and websites with OpenAI integration - there are no impossible tasks! With a focus on high-quality code, user-friendly interfaces, and responsive designs, our developers are committed to delivering projects that exceed expectations. We’ve had the chance to work with clients from across the world, and we guarantee meeting timelines and maintaining communication, irrespective of time zones. The majority of our clients return to us with new projects, and this is the best recommendation 💯 Whatever task you have, you can be sure - we will deliver a perfect solution! Contact us today to learn how we can help bring your web development project to life! Our main skills, including but not limited to: ✅ Front-end: Redux, Redux-thunk, Axios, Axios Retry, js-queue, Lodash.js, Redux-Form, Reselect, Angular 2+, TypeScript, jQuery, Bootstrap, SASS/LESS, CSS3, HTML5, Webpack. ✅ Back-end: Node.js ✅ JavaScript: React.js, Node.js, Next.js, Vue.js, Angular.js, React Native ✅ Server-side: Amazon AWS, Microsoft Azure, Google App Engine, Nginx, Docker ✅ Databases: MongoDB, PostgreSQL, MySQL, Redis, Oracle DB, HBase, Microsoft SQL Server, Sybase. ✅ DevOps: Docker, Kubernetes, Ansible, Bash, AWS (Lambda, DynamoDB, API Gateway, S3, etc.), GitLab ✅ API - Google, Facebook, Stripe, PayPal, Different lead API, Twilio API, Cognito, AWS, REST.API, GraphQL, etc. ✅ Payment Gateways - PayPal, Google Checkout, Stripe, Adyen, Sofort, Custom payment gateways, etc. Last updated 7th July 2026 Keywords: MERN Stack, React.js, Node.js, Express.js, MongoDB, Next.js, Redux/Zustand/Context API, RESTful APIs, GraphQL, JavaScript (ES6+), TypeScript, Full Stack Web Development, API Integration, Microservices Architecture, Server-Side Rendering (SSR), Single Page Applications (SPA), Component-Based Architecture, WebSocket/Real-Time Apps, Authentication & Authorization (JWT, OAuth), MVC Architecture, Responsive Design, Tailwind CSS/Material UI/Bootstrap, UI/UX Optimization, Performance Optimization, Lighthouse/Core Web Vitals, Cross-Browser Compatibility, Git/GitHub/GitLab, Docker, AWS/DigitalOcean/Vercel, CI/CD, Agile/Scrum, Jira/Trello/ClickUp, SaaS Platform Development, Dashboard/Admin Panel, E-commerce Platform, Marketplace Development, CRM/ERP System, Healthcare/Fintech Apps, Real-time Chat Application, Social Network App, Booking/Scheduling Platform

Hello, I am Illia. I am a frontend‑focused developer who turns ideas into modern, high‑performance digital products. My goal is to build web applications that are visually appealing, scalable, fast, and intuitive for users. I approach every project with strong attention to detail and a commitment to delivering reliable solutions, whether building a product from scratch or improving an existing application. What I Specialize In: Complex Web Platforms: I have experience working on CRM systems, SaaS platforms, analytics dashboards, and content platforms. Modern Tech Stack: I specialize in developing complex web platforms using modern JavaScript frameworks such as React, Next.js, Vue, and Nuxt, combined with robust backend solutions built on Node.js and Express. AI Integration & Automation: I am deeply in tune with AI, utilizing tools like Claude, Cursor to streamline development workflows and integrate intelligent, automated features into web applications. Clean Execution: I focus on clean architecture, optimized data fetching, and seamless integrations with third‑party services. Let's Build Together If you are looking for a reliable software developer with a deep knowledge of ai, who understands both clean code and your broader project goals, let's connect. Send me a message with a brief overview of your project, and we can schedule a quick call to discuss how I can help bring your vision to life.

🚀 The Top 3% of Node.js, AI & Backend Engineering Talent on Upwork 🤖 AI-Native Backend Development for Modern SaaS & Enterprise Products ⚡ 10+ Years of Professional Experience ⚡ AI Agents, Chatbots & LLM Integrations Delivered ⚡ Modern AI Stack: Cursor, Claude Code, GPT-4, Claude Sonnet & Copilot ⚡ 30–40% Faster Delivery Through AI-Assisted Engineering ⚡ Trusted by Startups, SaaS Companies & Enterprise Clients Welcome! 👋 I'm a Senior Node.js Developer, Node.js Backend Developer specializing in scalable, secure, and high-performance backend systems. For 10+ years, I've helped companies architect, build, optimize, and modernize SaaS platforms, enterprise applications, fintech products, healthcare solutions, CRM/ERP systems, and marketplace platforms. From Startup MVPs to enterprise ecosystems, I deliver software designed to scale with business growth. 🔥 WHAT YOU GET ✔ High-Performance Backend systems engineered to process millions of requests with 99.99% uptime. ✔ Production-ready features delivered 30–40% faster using AI-assisted development and AI-generated code workflows. ✔ End-to-End Development—from MVP Development and Product Development to long-term Backend Support and Application Maintenance. ✔ A Dedicated Developer and Technical Lead focused on measurable business outcomes. 🏆 RESULTS & IMPACT ✔ Delivered SaaS Development initiatives, ecommerce solutions, enterprise applications, and real-time systems serving thousands of users worldwide. ✔ Improved API performance by up to 50% through Backend Optimization, Redis caching, and Database Architecture improvements. ✔ Accelerated release cycles by 30–40% using AI-native engineering practices without sacrificing maintainability. ✔ Built Scalable Backend infrastructures capable of supporting millions of transactions and sustained business growth. 🚚 WHERE I DELIVER As a Senior Node.js Developer and Backend Engineer, I build REST API and GraphQL API ecosystems using Node.js, Express.js, NestJS, Fastify, Koa.js, JavaScript, TypeScript, WebSocket, Socket, Microservices, and Event-Driven Architecture. As an API Developer and REST API Developer, I deliver API Development, API Integration, Third-Party API Integration, Authentication, Authorization, JWT, OAuth, SSO, Swagger, OpenAPI, and API Documentation for secure enterprise environments. As a Full Stack Developer, I create Web Applications, Ecommerce Websites, Website Redesign projects, Browser Extensions, Google Chrome Extensions, Desktop Applications, Platform Plugins, Headless CMS, CMS Integration, Odoo Development solutions, and End-to-End Development initiatives. As an AI engineering partner, I help companies implement AI Development through AI Agent Development, AI App Development, AI Bots, Chatbots, ChatGPT Integration, OpenAI API integrations, OpenAI Codex Prompt workflows, AI Model Integration, and AI-generated code strategies that improve team productivity by 30–40%. 💳 INTEGRATIONS & AUTOMATION ✔ 10+ years integrating Stripe Integration, PayPal Integration, Twilio Integration, SendGrid, shipping providers, Payment Integration services, Webhooks, and System Integration workflows. ✔ Built asynchronous architectures using RabbitMQ, Kafka, BullMQ, Queue Management, and Message Queues to improve throughput and reliability. ✔ Automated Data Processing and ETL pipelines that reduce manual effort and support real-time decision-making. ⚒️ TECHNOLOGY ECOSYSTEM ✔ 10+ years of Backend Development using Node.js, Express.js, NestJS, Fastify, JavaScript, TypeScript, Python, PHP, Java, Kotlin, Scala, Ruby, C#, ASP.NET, Django, and modern Software Architecture practices. ✔ 8+ years delivering Full-Stack Development with React, Angular, AngularJS, Vue.js, HTML5, CSS3, Bootstrap, jQuery, Google Analytics, Adobe Photoshop, and Website Optimization strategies. ✔ 10+ years designing Database Development and Database Architecture solutions using MongoDB, PostgreSQL, MySQL, Redis, DynamoDB, Firebase, Supabase, Prisma, TypeORM, Sequelize, Mongoose, Microsoft SQL Server, MariaDB, Oracle, Neo4j, and Azure Cosmos DB. ✔ 7+ years deploying cloud-native applications with Amazon Web Services (AWS), Lambda, EC2, S3, Azure, Google Cloud Platform, Docker, Kubernetes, DevOps, Serverless Architecture, GitHub Actions, Jenkins, Git, and CI/CD pipelines. 🤖 AI-ASSISTED ENGINEERING STACK ✔ 5+ years leveraging Cursor, GitHub Copilot, Claude Code, OpenAI ChatGPT, GPT-4, and GPT-4o to accelerate prototyping, debugging, testing, and implementation by 30–40%. ✔ While AI accelerates delivery, critical architecture decisions, scalability planning, and Technical Lead responsibilities remain grounded in 10+ years of engineering experience. 🤝 LET'S BUILD SOMETHING GREAT Whether you need a Node.js Developer, Node.js Backend Developer, Backend Engineer, Full-Stack Developer, API specialist, AI integration partner or Technical Lead I'd be happy to discuss your architecture, roadmap, and next steps.

I help founders and businesses build modern, scalable web applications — from MVPs to full production SaaS platforms. My main focus is full-stack development, delivering fast, reliable, and maintainable products using modern technologies like Next.js, React, Node.js, NestJS, PostgreSQL, and AWS. With 6+ years of hands-on experience, I’ve worked on a wide range of products across startups and growing businesses, helping turn ideas into stable, production-ready solutions. I bring both strong technical execution and a practical product mindset to every project. In addition to core development, I also help clients implement AI-powered features such as chatbots, automations, LLM integrations, and RAG systems when needed. What I Can Help With: 🚀 Full-Stack Development • Custom web applications • Frontend + backend architecture • APIs, dashboards, admin panels • Real-time apps • Performance optimization 📈 SaaS Product Development • MVP development • Multi-tenant SaaS platforms • Authentication & user roles • Billing & subscriptions • Scalable architecture 🤖 AI Integrations • OpenAI / Claude / Gemini integrations • AI chat features • RAG systems • Workflow automation • AI-enhanced SaaS products My Technical Skills: 🌐 Frontend - React, Redux - Next.js (SSR/SSG) - GSAP, Three.js, Framer Motion - TailwindCSS, SASS ⚙️ Backend - Node.js - NestJS, Express.js - REST/GraphQL - WebSockets - RAG 🗃️ Database - PostgreSQL - MySQL - MongoDB - Firebase - Supabase - Redis 📝 CMS & E-Commerce - Strapi - Sanity - Shopify Storefront - Contentful - PayloadCMS 🛠️ DevOps - AWS, Digital Ocean, Vercel - CI/CD (GitHub Actions, Jenkins) - Docker 🧪 Testing - Unit Testing: Jest, Vitest - E2E Testing: Cypress, Playwright