Hire the Best Nest.js Freelancers
in Canada

Full-stack developer with 6+ years of experience building scalable web and mobile applications. I specialize in creating robust solutions from concept to deployment, with strong expertise in cloud architecture, DevOps automation, and AI-powered features. I've successfully delivered 20+ projects ranging from MVP startups to enterprise-level applications, consistently helping clients solve complex technical challenges and scale their businesses. What I bring to your project: End-to-end development expertise (frontend, backend, infrastructure) Solution architecture for complex business requirements Deep debugging skills that save time and money Clear communication and proactive project planning Frontend Development React.js (Redux, Context API, Hooks, Next.js) Vue.js (Vuex, Nuxt.js, Composition API) Modern JavaScript/TypeScript Responsive UI/UX implementation Performance optimization Backend Development Node.js (Express, NestJS, Fastify) RESTful APIs & GraphQL Microservices architecture Real-time applications (WebSockets, Socket.io) Database design (PostgreSQL, MongoDB, MySQL, Redis) Cloud & DevOps (AWS Specialist) AWS services: EC2, Lambda, S3, RDS, DynamoDB, CloudFront, API Gateway Infrastructure as Code (Terraform, CloudFormation) CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins) Docker & Kubernetes Monitoring & logging (CloudWatch, ELK Stack) Cost optimization strategies AI & Machine Learning Integration OpenAI GPT integration (ChatGPT, GPT-4, GPT-4 Vision) Python for AI/ML workflows Custom chatbots and AI assistants LangChain, vector databases Prompt engineering & fine-tuning AI-powered features (content generation, analysis, recommendations) Mapping & Geospatial Mapbox GL JS (custom maps, routing, visualization) OSRM (route optimization, distance calculations) Geolocation services Location-based applications GeoJSON data processing Mobile Development React Native (iOS & Android) Flutter (cross-platform apps) App store deployment Push notifications In-app purchases Web Scraping & Data Extraction Python (BeautifulSoup, Scrapy, Selenium) Node.js scraping tools API reverse engineering Data parsing and transformation Automated data collection pipelines Specialized Skills Solution Architecture: Designing scalable systems for complex requirements Project Planning: Breaking down large projects into manageable phases Debugging Expert: Quickly identifying and fixing critical issues Performance Optimization: Database tuning, caching strategies, CDN setup Security: Authentication (JWT, OAuth), data encryption, security best practices

I help founders and startups build SaaS products, customer portals, and platforms with React, Next.js, Node.js, Ruby on Rails, and cutting-edge LLM technologies. A great product isn't built by writing endless code. It’s built by shipping the cleanest version of your idea to market then scaling it seamlessly. That’s exactly what I do. For the past 8+ years, I’ve partnered with founders and fast-scaling startups to turn complex product visions into market-ready realities. From shipping rapid MVPs to architecting robust AI SaaS platforms used by thousands of active users, I bridge the gap between business strategy and cutting-edge code. I don't just write software; I build products that scale, retain users, and drive revenue. My philosophy is simple: great software solves real-world business problems. I architect clean, highly maintainable codebases from day one, ensuring your platform can handle rapid user growth without accumulating technical debt. What I can help with: • AI-powered SaaS products • SaaS MVP development • AI chatbots and AI agents • OpenAI, Claude, and Gemini integrations • RAG applications and intelligent search • Customer portals and dashboards • Internal business tools • API integrations and workflow automation • Legacy application modernization • Application performance and scalability improvements Why clients work with me: ✔ 8+ years of software development experience ✔ 100+ projects delivered ✔ 100% Job Success on Upwork ✔ Top Rated Freelancer ✔ 5,000+ hours worked on Upwork ✔ Strong experience working directly with founders and product teams My core technologies include: Frontend: React.js, Next.js, TypeScript, JavaScript, Tailwind CSS Backend: Ruby on Rails, Node.js, Express.js, Python AI: OpenAI, Claude, Gemini, LangChain, AI Agents, RAG, Vector Search Database & Cloud: PostgreSQL, MongoDB, Redis, Supabase, Firebase, AWS, Docker, Vercel By using modern tools like Cursor and Claude Code, I am able to speed up my development process significantly. This helps me ship features quickly without cutting corners on code cleanliness or testing. If you're looking for a developer who can understand both the technical and product side of your business, I'd be happy to discuss your project. 📩 Send an invitation, and let's discuss your project.

✨ PRO FREELANCER ✨ TOP-RATED ✨ 100% JOB SUCCESS RATE ✨ ✨ FULL STACK DEV & VIBE CODING REFACTORING SPECIALIST ✨ 👋 Hi, I’m Hamza Shahab, a results-driven Full Stack Web Developer with years of experience building modern, scalable, and high-performing web applications. I specialize in front-end frameworks, backend APIs, and cloud-native solutions that help businesses grow and succeed online. 💡 Services I Offer ----------------------- 👉 Custom Websites: Landing pages, portfolios, blogs, e-commerce stores, corporate sites 👉 Vibe Coding Rescue: Refactoring AI-generated "spaghetti code," fixing hallucinated logic, and turning messy MVPs into solid production apps 👉 Web Applications: Dashboards, SaaS platforms, chatbots, CRMs, interactive tools 👉 Backend Development: REST APIs, GraphQL, authentication, real-time apps, CMS solutions 👉 Performance Optimization: Speed, SEO, security, scalability, and cloud deployment 🎯 Why Clients Choose Me --------------------------------- ✅ Proven Track Record: Top-rated freelancer with 100% job success on Upwork ✅ The "Finisher" Touch: You "vibed" the code into existence; I structure, secure, and scale it for the real world ✅ Full Stack Expertise: Skilled in both frontend (React, Angular, Next.js, Gatsby) and backend (Node.js, Express, Nest, Java, Spring Boot) ✅ AI-Ready: Experience building intelligent apps using LLMs, LangChain, and Vector Databases ✅ Cloud & DevOps Ready: Deployments on AWS, Azure, GCP, Vercel, Netlify, Heroku, Cloudflare ✅ Database Mastery: SQL (MySQL, PostgreSQL, OracleDB) & NoSQL (MongoDB, Firebase, Firestore) ✅ Agile Collaboration: Experienced with Jira, Trello, Slack, Asana, Monday for smooth project management 🛠️ Tech Stack ------------------ ⚡ AI-Assisted Dev Tools: Antigravity, Cursor, Windsurf, GitHub Copilot, Replit (Expert at debugging AI-generated outputs) 🌐 Frontend: ReactJS, Angular, NextJS, GatsbyJS, TypeScript, TailwindCSS, Bootstrap, Redux ⚙️ Backend: NodeJS, ExpressJS, NestJS, Java, Spring Boot, GraphQL, WebSockets, Prisma 🗄 Databases: MySQL, PostgreSQL, OracleDB, MongoDB, Firebase, Firestore ☁ Cloud/DevOps: AWS, Azure, GCP, DigitalOcean, Vercel, Netlify, Heroku, Cloudflare 📱 Version Control: Git, GitHub, GitLab, Bitbucket, CI/CD pipelines 🤖 AI & LLM: OpenAI API (GPT-5), Gemini 3.0, LangChain, Pinecone, ChromaDB, Hugging Face, RAG Pipelines, Prompt Engineering 🌟 What You Can Expect ------------------------------ ⚡ Fast & On-Time Delivery (Turning prototypes into products) 📞 Clear Communication & Requirement Understanding 🔄 Unlimited Revisions Until Satisfaction 🔐 Secure, Scalable, and SEO-Friendly Solutions Did you build your app with AI, but now it's stuck? Let’s collaborate and turn your "vibe" into reality! ✨

🎯 6+ Years of Full Stack Development & Project Management 📈 50+ Apps Developed | 150+ Projects Delivered As a Developer, Project Manager, Implementation Manager, QA Testing Expert (Manual) and IT support, I offer a unique combination of technical and leadership skills, having overseen and contributed to the successful completion of 100+ projects. I specialize in building scalable, high-performance applications while leading cross-functional teams to deliver on time and within scope. Key Expertise: Full Stack Development: Proficient in MERN stack (MongoDB, Express.js, React.js, Node.js), with experience building 50+ web and mobile apps. Familiar with Next.js, Nest.js, and Tailwind CSS to create responsive, efficient frontends and robust backends. Product Leadership & Project Management: As the Product Owner for Linga rOS’ "Allure", I managed the entire product lifecycle—from concept and feature development to integration, testing, and post-launch support. I’m skilled in Agile methodology and use tools like Zoho Projects to deliver projects on time. QA Testing & Software Quality Assurance: With extensive experience as a QA Engineer, I have performed manual and automated testing using methodologies like regression, load, performance, and smoke testing. Ensuring that software aligns with business requirements is a top priority for me, from early stages through final QA checks. AI & LLM Models: Hands-on experience integrating Large Language Models (LLMs) into various platforms, including AI-driven healthcare solutions that deliver advanced, user-focused functionalities. Database & Cloud Expertise: Skilled in managing databases such as MySQL, PostgreSQL, MongoDB, SQL Server, and proficient with AWS, Google Cloud, and Microsoft Azure for seamless cloud integration and scalability. Why Partner with Me? I’m a results-driven professional who understands both the technical and business sides of a project. Whether you need full stack development, project leadership, or quality assurance testing, I bring a strategic approach to ensure successful outcomes that meet business goals. Let’s Connect: Interested in learning how I can help you achieve your project goals? Let’s schedule a free 15-minute consultation to discuss your needs! Highlighted Skills: Full Stack Development: MERN Stack, Next.js, Nest.js, Tailwind CSS, RESTful APIs, GraphQL Project Management: Agile, Scrum, Zoho Projects, Cross-functional Team Leadership, Product Ownership Quality Assurance: Manual & Automated Testing, Regression Testing, Load Testing, Smoke Testing Databases: MySQL, MongoDB, PostgreSQL, Oracle, SQL Server Cloud Services: AWS, Google Cloud, Microsoft Azure AI & ML: Large Language Models (LLMs), AI Integration Programming Languages: Java, Linux, JavaScript, TypeScript, Python

🚀 Award-Winning Full Stack Developer | 8+ Years | Top 10% Upwork | AWS Certified | 100% Job Success Rate 💼 TRANSFORM YOUR IDEAS INTO POWERFUL DIGITAL SOLUTIONS I'm Balwinder, a Senior Full Stack Developer with 8+ years of proven expertise in building scalable web applications, SaaS platforms, and MVPs that drive real business results. My mission: deliver exceptional code quality while accelerating your time-to-market. 🏆 FEATURED ACHIEVEMENTS: ☑️ Built MVP for healthcare startup - secured $250K Series A funding ☑️ Engineered e-commerce platform processing $100K+ monthly transactions ☑️ Developed AI-powered EdTech solution serving 3,000+ students ☑️ Led enterprise modernization - reduced system downtime by 95% ☑️ Top-rated freelancer with 100% Job Success Rate (Top 10% Upwork) 💬 WHAT CLIENTS SAY: "Balwinder is an excellent freelancer with great skills. They were able to complete my project on time and within budget. I was very impressed with their communication and their ability to deliver exceptional results." ☑️ "Quick problem solver and very respectful person. Always available online to help." ☑️ "Unlike most developers, communications are key - took care of issues perfectly." ☑️ "Managed to tie my two businesses' websites together seamlessly." ⚡ CORE EXPERTISE: 🔹 Frontend Excellence: Next.js 15, React.js, TypeScript, Tailwind CSS, Material UI, ShadcnUI, Responsive Design 🔹 Backend Mastery: Laravel, Node.js, NestJS, Express.js, Python, FastAPI 🔹 Database Architecture: PostgreSQL, MySQL, MongoDB, Redis, Prisma ORM, Drizzle ORM 🔹 Cloud & DevOps: AWS (EC2, Lambda, S3, RDS), Vercel, DigitalOcean, Supabase 🔹 AI Integration: OpenAI, ElevenLabs, Replicate, Automation Tools 🚀 RECENT INNOVATIONS: 💡 Implemented GPT-4 integration for automated content generation 💡 Built real-time AI chatbot reducing customer support by 60% 💡 Deployed serverless architecture cutting hosting costs by 80% 💡 Integrated advanced security protocols (OWASP compliance) 💡 Optimized database queries improving page load times by 75% 💡 Automated CI/CD pipelines for zero-downtime deployments 📦 SERVICE PACKAGES: 🚀 MVP in 21 Days - Complete product from concept to launch 🔧 System Audit & Optimization - Performance boost guarantee ⚡ Legacy Modernization Sprint - Transform old systems in 2 weeks 🛠️ Emergency Project Rescue - Fix failing projects fast 🎯 INDUSTRIES I SERVE: EdTech • Healthcare • FinTech • E-commerce • SaaS • Startups • Enterprise 🛠️ SERVICES I PROVIDE: ✅ Custom Full Stack Web Applications ✅ API Development & Third-party Integrations ✅ Cloud Migration & Deployment ✅ Performance Optimization ✅ Database Design & Architecture ✅ Real-time Applications ✅ E-commerce Solutions ✅ MVP Development 💡 WHY CHOOSE ME? ☑️ Clean, maintainable code that scales ☑️ Agile development approach ☑️ Clear communication throughout ☑️ On-time delivery guarantee ☑️ Post-launch support included 🔥 Invite me to your project to get the power of proven tech and startup energy—let's launch and scale! 📞 Available for consultations • Quick response time • Flexible timezone support

⭐ ⭐ ⭐ ⭐ ⭐ 5-Star Reviews from Happy Clients! ⭐ ⭐ ⭐ ⭐ ⭐ ✅ 7+ Years of Experience ✅ 704+ Hours Completed ✅ Verified Freelancer ✅ 100% Job Success Rate I am a highly skilled MERN/MEAN Full-Stack Developer with a passion for building scalable, high-performance web applications. I specialize in frontend and backend development, ensuring user-friendly, optimized, and secure solutions for businesses of all sizes. 💎 My Services Include: ✅ Frontend Development: React.js | Angular | Next.js | Tailwind CSS | Bootstrap ✅ Backend Development: Node.js | Express.js | NestJS | REST & GraphQL APIs ✅ Database Management: MongoDB | MySQL | PostgreSQL | Firebase ✅ Cloud & DevOps: AWS | Docker | Kubernetes | CI/CD Pipelines ✅ Authentication & Security: JWT | OAuth | Role-Based Access Control My goal is to deliver high-quality work on time, ensuring that every project meets your expectations and drives results. If you're looking for a skilled, reliable, and detail-oriented developer, let’s connect and bring your vision to life! 🚀 💬 Contact me today!