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Dependability, responsibility, performance, experience. That is what my clients get by hiring me. A 100% job success score is a testament that I have always delighted my clients in my many years on Upwork. Being an expert means I spend less time on google and more time in development and problem solving. I have already solved most of the issues that occur during the lifetime of the project that is why I can deliver quicker than most developers. The following are my core competencies :- Soft Skills : - Excellent Communication skills and work ethic - Writing complex business logic - Ability to pick up a new stack/language very quickly. Technical Skills : - Full stack web development in Angular and React - Front end development in React with Next.js - Translating Figma/Adobe XD/Zeplin screen designs into Angular and React Apps - Backend development with Nodejs, Express and MongoDB - Backend development with Strapi - GraphQL and RESTful API integration - AWS Infrastructure- Route53, ECS, Lambda, S3, Cognito etc - Using SCRUM for project management - Expert knowledge of Git. - CI/CD using AWS, Heroku, Bitbucket and Github If I submitted a proposal on your project, trust that I've analyzed it carefully before doing so; I only submit proposals to projects that I find exciting and match my expertise perfectly so that I can deliver my best and make sure you love the result! Thanks!

Startups, enterprises and public-sector organizations bring me in when the product needs strong technical decisions, not just execution - production AI systems, SaaS platforms and fintech, from architecture to live deployment. Most engagements start with a fixed-price design phase that defines architecture, scope and roadmap, then convert into fixed milestones, so delivery stays structured and budget predictable. Rate $125-150/hr depending on complexity; most work is delivered as fixed-price milestones. What I specialise in: AI/LLM systems - RAG pipelines, multi-tenant AI assistants, agent orchestration, Claude/OpenAI integrations, structured outputs, eval pipelines. SaaS platforms - multi-tenant architecture, subscription billing, RBAC, admin backends, scalable APIs across web and mobile. Fintech/compliance - ACH, Stripe Connect, idempotent payment webhooks, audit logging, GDPR-compliant data. Govtech/regulated - transparency platforms, donor-funded compliance, multi-language reporting. Blockchain/Web3 - Solana smart contracts, SPL tokens, DeFi integrations. Selected results (live demos and links in the Portfolio section): Minerva (active production) - multi-tenant AI assistant platform architected end to end: organizations upload document libraries and deploy embeddable chatbots on their own knowledge base. Hybrid retrieval (BM25 + dense vector + semantic), Entra ID + RBAC + MFA, full tenant isolation, golden-query eval harness in CI. NestJS, Next.js, Azure OpenAI. Diginak.ai (active production, lead architect) - logistics document automation that auto-processes ~78% of inbound PDF/CSV/Excel with zero human touch; the remainder routes to human review with confidence scores. Claude API + tool use, state-machine workflow engine, retry/idempotency, 850+ automated tests. NestJS, PostgreSQL. Walletta AI Cashier (concluded May 2026, 5-star) - real-time voice agent with sub-500ms perceived latency. Claude + GPT-4o orchestration, structured tool calls with confidence-scored routing, persistent WebSocket, retry with circuit breaker. LiveKit, Deepgram, ElevenLabs, NestJS. Damen Capital Portal (concluded May 2026, 5-star) - loan-servicing portal for a private lender with the full ACH lifecycle: tokenization, NACHA returns R01-R85, HMAC-verified idempotent webhooks, append-only audit log, OAuth 2.0 + RBAC, scheduled reconciliation. NestJS + Fastify, Supabase. PulseYourBiz (active production) - all-in-one SaaS for service providers: bookings, payments, invoicing, CRM, analytics. Five-app Turborepo monorepo, Stripe Connect payouts, idempotent webhooks, React Native mobile. Docker + GitHub Actions. ProveYourImpact (production) - multi-tenant governance/compliance platform for donor-funded projects in PALOP countries: 20 API modules, 9-role RBAC, configurable workflow engine, audit log, EU/UNDP/World Bank report generators in four languages. NestJS, Next.js, PostgreSQL + RLS. Also shipped: no-code Solana token/DeFi platform with 1,500+ users (SwapForge), offline-first clinical decision support for underserved regions (ExtendYourClinic), multi-tenant VetSaaS with PostgreSQL RLS isolation (acti.vet), React Native apps live on both app stores (ForroAI). Tech stack: Backend: Node.js, NestJS, Python, FastAPI, REST, GraphQL. Frontend: React, Next.js, React Native, Expo, TypeScript, Tailwind. AI: Claude, OpenAI, RAG, pgvector, Azure Cognitive Search, structured outputs (Zod/Pydantic), prompt caching, tool use, eval harnesses in CI. Cloud: Azure (Functions, OpenAI, Entra ID, Key Vault, App Insights, Bicep IaC), AWS, GCP, Docker, GitHub Actions. Databases: PostgreSQL, MongoDB, Redis, Supabase, RLS tenant isolation. Blockchain: Solana, Anchor, SPL, Jupiter, Solidity, EVM. Working model: 25-30 hrs/week across a small number of parallel engagements. Best fit when the product needs architectural ownership - not a fit for quick fixes or one-off tasks.

💼 8+ years of Full Stack Development experience with strong expertise in Software Architecture 🌍 120+ projects delivered for clients in the US, Canada, Europe & Asia 💰 20M+ in client revenue generated through high-performance web apps 🚀 40+ SaaS platforms & 12 HR solutions successfully launched 📱 Dozens of responsive Progressive Web Apps (PWA) delivered ⭐ 5-Star ratings across all projects I lead a team specializing in web development, mobile development, and SaaS development, with deep hands-on experience building scalable, high-performance products for startups and growing businesses. Our team includes dedicated frontend developers in React, backend developers in Node.js, and UI/UX designers - together we take full ownership of the product lifecycle, from idea validation and MVP delivery to stable production releases. 🚀 MVP & Startup Product Development We help founders move fast without sacrificing quality through agile web development and mobile development workflows. Our focus is on: Turning ideas into working MVPs Building investor-ready demos Launching beta products quickly Our team delivers: Rapid MVP development (UI/UX design - Frontend - Backend) UX flows and prototyping in Figma Production-ready code with React, Node.js, React Native, and Swift Secure third-party integrations (Stripe, Firebase, Auth0, Twilio, Google Maps) Clean, scalable architecture designed for long-term growth and SaaS development 💻 Web Development Our React frontend development team and backend developers work together on Node.js to build modern web applications that are fast, maintainable, and scalable. Front-End (Frontend developers React focus): React.js, Next.js TypeScript, JavaScript (ES6+) HTML5, CSS3, Tailwind Back-End (Backend developers/development with Node.js): Node.js, NestJS, Express.js REST & GraphQL APIs PostgreSQL, MongoDB, MySQL CMS & Headless Solutions: Sanity, Contentful, Strapi Every project combines React frontend development and Node.js backend development to support performance, scalability, and clean code practices - a foundation that's especially critical for SaaS development. 📱 Mobile App Development Our mobile development specialists create mobile applications optimized for real-world usage: React Native for fast cross-platform delivery Swift & SwiftUI for native iOS apps Firebase, push notifications, analytics App Store deployment and optimization Offline mode, multi-language support, battery efficiency Our backend developers use Node.js to handle server-side logic, ensuring smooth communication between mobile apps and backend systems. ☁️ Cloud, DevOps & System Architecture Our backend development team designs and maintains reliable, production-ready infrastructure: AWS: Lambda, EC2, S3, CloudFront, RDS Docker, Kubernetes, Terraform CI/CD pipelines (GitHub Actions, GitLab CI) Monitoring & logging (Sentry, Prometheus, Grafana) The goal: stable deployments, predictable scaling, and minimal downtime - essential for any serious SaaS development effort. 🎨 UI/UX Design & Development We work with strong UI/UX design awareness baked into every stage, not just code execution: Product discovery & user flows Design systems & UI kits Accessibility (WCAG) Responsive, conversion-focused layouts This helps ensure the product is not only functional, but usable and intuitive - whether it's a web development project, a mobile development project, or a full SaaS development build. 🤝 How We Work Direct communication with our frontend developers, React, backend developers, Node.js, and UI/UX design team (no middle layers) Transparent progress and clear estimates Agile mindset and iterative delivery Clean, documented, maintainable code Result: reliable products built by a team that understands both business goals and technical execution across web development, mobile development, and SaaS development. Just send me a message or click Invite, and I'll personally oversee your project in a Product Manager role, with our development team executing the work.

I am a dedicated Node.js backend developer with strong expertise in designing and implementing scalable, secure, and high-performance web applications. Over the years, I have built and enhanced numerous projects from scratch, applying modern architecture design patterns, optimizing code, and improving performance to meet business goals and user expectations. My core skills revolve around JavaScript, React, Node.js, PHP, and CSS, allowing me to deliver complete end-to-end solutions. Whether it’s building an efficient backend with Node.js or integrating a powerful React frontend, I ensure seamless connectivity and a smooth user experience. 🔑 My Expertise Backend Development with Node.js Proficient in Node.js for building scalable APIs and server-side logic. Skilled in Express.js and modern frameworks for RESTful API and GraphQL development. Optimization of backend performance, code refactoring, and reducing latency. Designing microservices and serverless architectures with AWS Lambda and Docker. Frontend Integration with React & JavaScript Development of user-friendly interfaces with React and JavaScript. Implementing responsive layouts with CSS and best UI/UX practices. Creating reusable React components and connecting them to robust backend APIs. Supporting React Native applications with optimized backend services. Database Design & Management Skilled in SQL and NoSQL databases, ensuring scalability and high availability. Schema design, query optimization, and integration with backend APIs. Experience with MongoDB, PostgreSQL, and Firebase for real-time data processing. Full-stack Capabilities Combining JavaScript, React, PHP, CSS, and Node.js into complete fullstack solutions. Integrating backend services with modern frontends to deliver smooth user flows. Building SaaS platforms, e-commerce solutions, CRM/ERP systems, and custom dashboards. 🏆 What Makes Me Different End-to-End Ownership – I can take your idea from concept to deployment. From designing the Node.js backend to integrating with React frontends, I cover every layer of the stack. Performance & Scalability – I focus on building solutions that are not just functional but also optimized for growth, ensuring low latency and high throughput. Proven Communication & Leadership Skills – I collaborate closely with clients, clearly explain technical solutions, and lead projects within tight deadlines. Continuous Learning – I constantly upgrade my knowledge, especially in blockchain technology, AI-driven development, and cloud-native architectures. 📂 Types of Projects I Work On Custom Backend Development – RESTful APIs, GraphQL endpoints, and high-performance server logic in Node.js. React Web Applications – Clean, modern, and responsive frontends powered by React and JavaScript. SaaS Platforms – Scalable solutions combining Node.js backend with interactive React dashboards. E-commerce Solutions – Fullstack development with JavaScript, PHP, Node.js, and React, including payments and inventory management. Blockchain Integrations – Working with smart contracts, Web3 APIs, and decentralized identity systems. Legacy System Modernization – Migrating outdated platforms into modern JavaScript + React + Node.js stacks. 🛠️ Technical Skills Languages: JavaScript, TypeScript, PHP Frontend: React, React Native, HTML5, CSS3 Backend: Node.js, Express.js, Laravel Databases: MongoDB, PostgreSQL, MySQL, Firebase DevOps: AWS Lambda, Docker, Kubernetes APIs: RESTful, GraphQL, WebSockets Other: Git, Agile Project Management, CI/CD 🌍 Why Clients Choose Me Fullstack Expertise: I bring together JavaScript, React, Node.js, PHP, and CSS into unified, robust systems. Proven Experience: I have successfully delivered projects for fintech, SaaS, blockchain, e-commerce, and enterprise businesses. Client-Centric Approach: I take time to understand your business needs and translate them into scalable technical solutions. On-Time Delivery: Recognized for completing projects under tight deadlines without sacrificing quality. 📞 Let’s Work Together If you are looking for a Node.js backend developer who also has strong skills in React, JavaScript, CSS, and PHP, I’d love to collaborate with you. My focus is always on building solutions that are secure, scalable, and user-friendly. Whether you need a new platform built from scratch, a backend optimized for performance, or a full-stack application that combines powerful APIs with intuitive frontends, I am here to help. Let’s connect and discuss how I can bring your project to life! 🔑 Keywords included often & naturally: Node.js, React, JavaScript, CSS, PHP, backend developer, react, javascript, backend development.

I build AI-powered products and full-stack systems for businesses worldwide. Production-ready. On time. Every time. 🏆 ▪️ Full Stack Development: Python, Django, FastAPI, React, Next.js, Node.js, Nest.js, TypeScript ▪️ AI Developer & LLM Integration: Claude API, OpenAI API, RAG Pipelines, AI Chatbots, Multi-Agent Systems ▪️ Python Developer: Django, FastAPI, REST API, Celery, PostgreSQL, Redis ▪️ React Developer: Next.js, React Native, TypeScript, SaaS Dashboards, Web Applications ▪️ Node.js Developer: Nest.js, Express, TypeScript, GraphQL, WebSockets, Microservices ▪️ Enterprise Software Development: FinTech Platforms, HealthTech, HIPAA-Compliant Systems, Government ▪️ Cloud & DevOps: AWS, Azure, Docker, CI/CD Pipelines, GitHub Actions, Infrastructure as Code ▪️ AI Automation: Document Processing, Knowledge Bases, Agentic Workflows, Chatbot Development Clients: Audi · eToro · California Department of Justice · Qonto (European FinTech, $5B valuation) Official Anthropic Technology Partner · Inc. 5000 · Forbes Technology Council 🥇 200+ projects shipped · 0 missed deadlines · 100% estimate accuracy ✔️ AI DEVELOPER & LLM INTEGRATION I design and ship AI-powered products built on Claude (Anthropic) and OpenAI APIs. As an official Anthropic Technology Partner, I have deep hands-on expertise in LLM application architecture for enterprise use cases. What I build: AI chatbots and conversational assistants, RAG (Retrieval-Augmented Generation) systems, multi-agent workflows, document processing automation, knowledge base platforms, AI-powered search, recommendation engines, and LLM integration into existing products via API layer. Stack: Python, FastAPI, LangChain, LlamaIndex, Claude API, OpenAI API, Pinecone, Chroma, Weaviate, Redis, PostgreSQL, AWS Lambda, Docker. Every AI product is production-ready — with proper context management, guardrails, cost optimization, error handling, and monitoring. Not a demo. Not a prototype. Shipped software. ✔️FULL STACK DEVELOPER — PYTHON · REACT · NODE.JS 12 years building web applications, SaaS platforms, and enterprise systems from scratch to production. I own the full stack: architecture, backend, frontend, database, deployment. Backend: Python (Django, FastAPI, Flask), Node.js (Nest.js, Express), REST API, GraphQL, WebSockets, async task queues (Celery, Bull), JWT and OAuth2 authentication, role-based access control. Frontend: React, Next.js, React Native, TypeScript, Tailwind CSS, Redux, SWR. Responsive, accessible, performant. Component architectures that scale — not code that breaks when you add the third developer. Database & Infrastructure: PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch. AWS (EC2, RDS, S3, Lambda, CloudFront, ECS), Azure, Docker, Kubernetes, GitHub Actions, GitLab CI. Infrastructure as Code (Terraform, AWS CDK). ✔️ ENTERPRISE SOFTWARE — FINTECH · HEALTHTECH · GOVERNMENT I build mission-critical systems for regulated industries where reliability, security, and compliance are non-negotiable. FinTech: payment processing systems, transaction monitoring, compliance automation, fraud detection, financial reporting dashboards, multi-currency platforms, Stripe and banking API integrations. Reference: Qonto — European neobank unicorn at $5B valuation. HealthTech: HIPAA-aware platforms, patient data management systems, clinical workflow automation, EHR and EMR integrations, telemedicine infrastructure, secure document handling. Reference: Modern Animal, Truveris, Prounitas. Government & Legal: audit-trail systems, secure document processing, role-based access control, decision logging, compliance reporting. Reference: California Department of Justice. ✔️ EDTECH PLATFORMS Student data systems, LMS infrastructure, analytical dashboards, compliance and security, user progress tracking, video delivery, assessment engines, and multi-tenant SaaS architecture. EdTech is my deepest vertical — more delivery experience in this space than almost any developer on this platform. ✔️ TEAM AUGMENTATION Need senior developers who plug into your product and deliver from week one, without the overhead of sourcing and onboarding? I source, vet, and lead the right engineers for your stack and timeline. Python developers, React developers, Node.js developers, AI engineers — all from a pre-vetted pool of top 3% talent. ✔️ PROJECT RESCUE Half-built product? Vibe-coded MVP that needs finishing? App that's live but has performance issues, security vulnerabilities, or can't scale? I take ownership, audit the codebase, and ship. Performance optimization, security hardening, technical debt reduction, production-grade refactoring — all part of what I do. ✔️ HOW I WORK Every engagement runs through a 36-point Quality Standards framework — a proprietary delivery process built over 200+ projects. Accurate estimates. Transparent tracking. On-time delivery. No surprises.