You need a product engineer who can take your SaaS from messy scope to a stable production release without splitting responsibility across multiple freelancers. Your product gets built with clear technical ownership from requirements to architecture, backend, frontend, and deployment, with decisions based on business flows (not generic boilerplate). What your team gets - Product and technical scoping that separates MVP-critical features from later phases - Architecture and data modeling designed around real workflows (auth, roles, payments, async processing, admin/customer portals) - End-to-end implementation across frontend, backend APIs, database, and infrastructure - Secure, production-ready patterns: RBAC, token/session strategy, validation, error handling, retries, queues/workers - Integration support for common SaaS needs (payments, email/notifications, background jobs, dashboards) - Deployment and handoff with docs/runbooks so you are not blocked after launch Typical projects - SaaS MVPs and internal platforms - Admin dashboards + customer portals - Booking/quote/invoicing workflows - API-first backends for web/mobile apps - Systems that require asynchronous processing (ingestion, queues, worker jobs, scheduled tasks) Deliverables - Product scope and execution plan with clear MVP boundaries - Technical architecture and database design aligned with your business workflows - Production-ready frontend + backend implementation (UI, APIs, auth, roles, core flows) - Integrations setup (payments, email/notifications, external APIs as needed) - Async processing setup where needed (queues, workers, scheduled/background jobs) - Deployment configuration (environment setup, hosting, domain/connectivity support) - Quality and reliability baseline (validation, error handling, logging, key edge-case coverage) - Handoff package: codebase, documentation, and runbook for smooth team takeover Core stack - Frontend: Next.js, React, TypeScript - Backend: Node.js/TypeScript, API architecture, async workers - Data: PostgreSQL, Supabase, schema/migration workflows - Integrations: Stripe, email flows, auth/permissions - Deployment: Vercel and cloud-hosted environments If your SaaS is still in idea or messy-build stage, share the context and get a practical plan to move it to production.

I build scalable backend systems, data pipelines, and automation platforms used by SaaS, fintech, and e-commerce companies. With 14+ years of backend engineering experience, I specialize in designing high-performance APIs, distributed ETL pipelines, and large-scale automation infrastructure. $500K+ earned on Upwork across 270+ projects building backend systems and data platforms. Key strengths: • Backend architecture (Python, FastAPI, Node.js, .NET, PostgreSQL, Supabase, Celery/RabbitMQ/Redis) • Data pipelines & ETL systems • AI integrations and RAG pipelines on vector databases (pgvector, Pinecone, Qdrant) • Large-scale data extraction and reverse engineered APIs • Distributed workers and automation infrastructure I focus on performance, reliability, and long-term maintainability, delivering backend platforms that grow with the business and remain stable under heavy load. Core technologies Python, FastAPI, Node.js, .NET Core, PostgreSQL, Redis, Supabase, Qdrant, Pinecone, Docker, Celery, RabbitMQ, Playwright, Selenium, Scrapy, REST APIs, GraphQL, ETL pipelines, vector search, distributed workers, cloud infrastructure (AWS/GCP/Azure), LLM, Langchain, Langfuse, BMAD

Hi there! I'm a Full Stack Developer with over 8 years of hands-on experience crafting high-end, scalable, and user-friendly applications. Throughout my career, I have worked on a variety of projects in Healthcare, Saas, E-commerce fields, leveraging technologies like Node.js, Express.js, React, Next.js, Redux, Angular, MongoDB, PostgreSQL, Tailwind and Bootstrap. And helped 30+ clients achieve their business goals on Upwork. My skill set includes: - Languages: JavaScript, TypeScript - Frontend: Angular, Ionic, Cordova, Capacitor, React, Next.js, Redux - Backend: Node.js, Express, Nest - Databases: MongoDB, PostgreSQL - Styling: HTML5, CSS3, SASS, Tailwind, Bootstrap, Angular Material, Material UI I'll be happy to help you with your next project. Feel free to contact me anytime!

I’m a Senior Full-Stack Engineer with 7+ years of experience building reliable web applications from backend to frontend. I mainly work with Node.js and NestJS to build secure APIs, handle authentication (JWT/RBAC), and design clean PostgreSQL databases. On the frontend, I use React and Angular to create smooth, user-friendly interfaces that connect properly with the backend. I can help you: • Build full-stack applications from scratch • Improve or fix existing projects • Debug API errors and performance issues • Integrate third-party services (Stripe, Plaid, etc.) • Deploy and stabilize applications on AWS I care about writing clean code, solving problems properly, and building systems that don’t break under pressure. If you need someone who can take ownership and deliver solid work without unnecessary complexity, I’m here to help.

I help businesses build high-performance, scalable, and AI-powered applications. With 12+ years of experience in full-stack development, software architecture, and AI/ML solutions, I specialize in delivering intelligent, robust systems that drive results. What I bring to your project: ✅ AI & Machine Learning – Predictive models, NLP, RAG systems for smarter search, Q&A, and data retrieval ✅ Full-Stack Web Development – ReactJS frontends with Django, Flask, or FastAPI backends ✅ API & Microservices – High-performance, secure RESTful APIs and integrations ✅ Odoo ERP Customization – Tailored modules to optimize business workflows ✅ Database Engineering – Optimized schemas and queries for speed and reliability ✅ Web Scraping & Automation – BeautifulSoup, Scrapy, and automated data pipelines Why clients hire me: Expertise in AI-powered applications, RAG systems, and full-stack solutions Proven track record delivering scalable, secure, and high-performance software Strong focus on results, efficiency, and client satisfaction Available for short-term projects, long-term collaborations, or consulting 💡 Let’s turn your idea into a smart, scalable solution. Contact me today to discuss your project!

"Your SaaS platform is 99% done." Real-time data doesn't work. API integrations fail under load. AI functionality was added but never connected to real data. Works for 10 users. Breaks at 1,000. The full-stack developer is gone. The pre-deployment audit says: start over. My Clients never tell this story. ⭐ Top Rated Plus ⭐ 100% Job Success ⭐ 92% client retention ⭐ 8 years in the game ⭐ 3M+ unique users in production ⭐ 200K+ monthly active users ⭐ 37+ AI-powered solutions I'm a full-stack developer specializing in SaaS platform development, Node.js, Python, and API integration. I build healthcare platforms, AI assistants, AI automation platforms, fintech systems, B2B SaaS applications, and enterprise integrations. Multi-tenant SaaS platforms, backend APIs, cloud infrastructure, and AI integrations using OpenAI API, Claude API, LangChain, and RAG architectures. Every SaaS platform I deliver is production-ready - scalable from day one, not rebuilt in six months. Here's how I prevent each of those: 🔴 "99% done" I define done as production-ready. A SaaS platform isn't finished until it's load-tested, edge cases are handled, and your team can maintain it. No surprises after handover. 📡 Real-time data I architect the real-time data layer from the start, not as an afterthought. WebSockets, event-driven systems, live dashboards that actually update when your data does. 🔌 API integrations I build every API integration with error handling, retry logic, rate limiting, and monitoring built in. When a third-party updates their endpoints, your SaaS platform keeps running. 🤖 AI functionality I connect AI to your actual business data, not a feature floating above your product. RAG systems, OpenAI API, Claude API, LangChain - embedded in the data layer where it creates real value. 📈 Scalability Every SaaS platform I build is designed for 10x your current load from day one. Multi-tenant architecture, database optimization, cloud infrastructure that grows without a rebuild. 👤 The full-stack developer disappears 92% of my clients return for the next project. Full documentation, knowledge transfer, and ongoing support are part of how I work. ✅ Pre-deployment — I deliver code that passes any audit. Architecture reviews, performance testing, and security checks are part of the build, not a last-minute discovery. What I build: 🏗️ SaaS Platforms Multi-tenant architecture, subscription management, role-based access control, B2B SaaS applications 🔌 API & Backend Development Node.js, NestJS, Python, FastAPI, REST API, GraphQL, microservices, API integration with third-party services 🤖 AI Integration RAG systems, AI agents, OpenAI API, Claude API, LangChain, LLM integration, AI-powered automation ☁️ Cloud Infrastructure AWS, Docker, Kubernetes, serverless, cost-effective high-performance architecture 📊 Data-Driven Dashboards Real-time analytics, financial reporting, BI migration, data visualization, Customer 360 🔄 Automation & Workflows WhatsApp Commerce platforms, n8n, Zapier, custom automation pipelines 🛡️ Enterprise Integrations CRM/ERP, Salesforce, HubSpot, healthcare platforms, fintech systems, Stripe ⚙️ Tech Stack: NestJS, FastAPI, React, Next.js, TypeScript · AWS, PostgreSQL, MongoDB, Redis What's the product? Tell me the outcome and I'll architect the path to get there. full-stack developer · full stack development · SaaS platform · SaaS developer · SaaS platform development · B2B SaaS · multi-tenant SaaS · multi-tenant architecture · AI SaaS · Node.js developer · Node.js backend · NestJS developer · Python developer · Python backend · FastAPI developer · React developer · Next.js developer · TypeScript developer · backend developer · backend development · API development · REST API · GraphQL API · API integration · webhook integration · payment integration · web application · web application development · scalable web application · SaaS application · SaaS MVP · cloud infrastructure · AWS · Docker · Kubernetes · serverless · microservices · AI integration · AI-powered SaaS · OpenAI API · Claude API · Anthropic · LangChain · RAG · AI agents · LLM integration · AI chatbot · automation · workflow automation · n8n · Zapier · data platform · real-time dashboard · data visualization · PostgreSQL · MongoDB · Redis · CRM integration · ERP integration · HubSpot · Salesforce · healthcare platform · fintech · IoT platform · long-term partnership · ongoing development · enterprise web development · full-stack engineer · software engineer · payment gateway · subscription management · role-based access control · multi-tenant · Claude Code · full-stack AI engineer · SaaS development company · backend development services

Tired of choosing between backend developers, automation specialists, and SaaS builders? I do it all—production-grade systems that work. 🏅 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 with 6+ years: 250+ projects, 40+ automation systems (95-99% uptime), 15+ AI SaaS platforms, 20+ directory sites ✅ 𝐂𝐥𝐢𝐞𝐧𝐭-𝐟𝐢𝐫𝐬𝐭—tested, documented, scalable, compliance-ready deployments only 🌟 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: full-stack SaaS (React/Next.js + Node.js/Python), automation (n8n, Closebot, Retell AI), platforms (Brilliant Directories, WordPress), AI (OpenAI, LangChain, RAG) ✅ 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝: 90%+ cost cuts, 40-60% faster launches, 1,500+ monthly appointments (zero missed), millions of records processed I solve: broken APIs, critical bugs, legacy code, 24/7 automation, scalable SaaS, monetized directories, converting voice agents. Backend fixes, MVPs in weeks, production systems, compliance-ready builds. 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 ✅ 𝐀𝐈 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 ✓ Voice Agents (Retell AI, Synthflow) - answering calls, booking appointments, sending summaries ✓ Closebot (40+ bots) - HVAC, plumbing, solar, emergency routing, dynamic pricing, CRM sync ✓ n8n Workflows (60+ nodes) - video production, database reactivation, booking sync, lead enrichment ✓ GoHighLevel - booking automation, lead qualification, SMS/email campaigns ✓ Multi-Platform Booking - Google Calendar + Square + GHL (1,500+ appointments, zero conflicts) ✓ WhatsApp Bots - RAG, LangChain, Pinecone search, interactive automation ✓ Lead Enrichment - Hunter.io integration, email discovery, database building ✅ 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐒𝐚𝐀𝐒 ✓ AI SaaS MVPs - OpenAI, LLMs, voice/chat AI, real-time features ✓ Full-Stack Platforms - React/Next.js + Node.js/Python + Supabase + payments ✓ Fintech Solutions - Stripe, Plaid, custom billing, PCI-DSS compliant ✓ Healthcare Platforms - HIPAA/FHIR/HL7, patient data, BI dashboards ✓ Payment Systems - recurring billing, invoicing, financial dashboards ✓ Real-Time Features - WebSockets, live dashboards, collaboration, multi-tenant ✅ 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 & 𝐂𝐨𝐧𝐭𝐞𝐧𝐭 ✓ Brilliant Directories - membership sites, monetization, member imports, SEO ✓ WordPress - WooCommerce stores, LMS, booking systems, plugins ✓ Directory Monetization - listing management, tier-based access, admin dashboards ✓ Database Integration - Google reviews, member imports, geo-targeting ✅ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐏𝐈 ✓ API Development - REST, GraphQL, third-party integrations, OAuth, JWT ✓ Backend Systems - Django, FastAPI, Flask, Express (scalable, production-ready) ✓ Database Design - PostgreSQL, MySQL, MongoDB (schema design, optimization, tuning) ✓ Automation Scripts - Python, cron jobs, ETL pipelines, background tasks ✓ Bug Fixing - legacy cleanup, optimization, technical debt elimination ✅ 𝐃𝐚𝐭𝐚 & 𝐀𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬 ✓ Data Pipelines - Airflow, Snowflake, BigQuery warehousing, ETL ✓ BI Dashboards - Power BI, Tableau, custom analytics, KPI tracking ✓ ML Integration - predictive analytics, recommendations, sentiment analysis ✅ 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 ✓ Cloud - AWS, GCP, Vercel, Firebase, Supabase ✓ DevOps - Docker, Kubernetes, CI/CD, GitHub Actions ✓ Security - HIPAA, PCI-DSS, SOC2, encryption, OAuth/JWT ✓ Monitoring - Sentry, CloudWatch, error tracking, alerts ✅ 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 ✓ LLM Systems - OpenAI, LangChain, RAG, Pinecone vectors ✓ Voice AI - TTS (ElevenLabs), STT (Whisper), conversational agents ✓ Content Automation - Cassidy AI, video production (Flux, Kling), multi-platform publishing ✓ NLP/Chatbots - intent detection, sentiment analysis, knowledge bases 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤 Frontend: React, Next.js, TypeScript, Tailwind Backend: Python (Django, FastAPI, Flask), Node.js, PHP, GraphQL Databases: PostgreSQL, MySQL, MongoDB, Supabase, Firebase Automation: n8n, Make, Zapier, Celery, cron Voice AI: Retell, Closebot, Synthflow, LangChain, RAG AI/ML: OpenAI, GPT-4, Whisper, TensorFlow, PyTorch Platforms: Brilliant Directories, WordPress, WooCommerce Payments: Stripe, Plaid, Square Data: BigQuery, Snowflake, Airflow, Power BI, Tableau Cloud: AWS, GCP, Vercel, Docker, Kubernetes Integrations: Google Sheets, Airtable, Twilio, Hunter.io, HubSpot, GHL Need full-stack ownership—frontend to backend to AI to DevOps? Message now. Fast response, faster delivery. ✅ Keywords: AI SaaS, n8n, Closebot, Retell AI, GoHighLevel, Brilliant Directories, WordPress, LLM, OpenAI, LangChain, Next.js, React, Node.js, Python, Django, FastAPI, API, Stripe, Plaid, PostgreSQL, MongoDB, HIPAA, PCI-DSS, fintech, healthcare, Docker, Kubernetes, AWS, ETL, BigQuery, chatbot, NLP, email finder, automation, SaaS MVP, scalable, production-ready

🎖️ Top Rated Plus (Top 1% of talent) 🚀 I help startups and growing businesses ship production-ready SaaS platforms that are built to handle real users, real payments, and real scale. With 5+ years of full-stack experience, I specialize in multi-tenant SaaS architecture, complex backend systems, and clean, maintainable frontends. My clients don't just get code, and they get a technical partner who stays accountable from the first commit to post-launch support. ✅ 100% Job Success Score ✅ 1,500+ billed hours ✅ 5.00 ★★★★★ Client Satisfaction ━━━━━━━━━━━━━━━━━━━━━━━━ 🏗️ What I Build For You ━━━━━━━━━━━━━━━━━━━━━━━━ ➡️ Multi-Tenant SaaS Platforms Role-based access control, subscription billing (Stripe), complex workflows, and admin dashboards were shipped end-to-end. I've delivered a Group Home Management SaaS actively managing 100+ facilities in production. ➡️ Modern Full-Stack Applications Next.js frontends, NestJS backends, Prisma + PostgreSQL databases, and structured for growth from day one, not refactored six months later. ➡️ Real-Time & AI-Powered Dashboards Live data pipelines, WebSocket-driven dashboards, and AI-powered reporting are used in production environments. ➡️ ERP & Internal Tools Business-critical internal platforms with complex data models, multi-role workflows, and high reliability requirements. ➡️ API Development & Third-Party Integrations Stripe, Supabase, AWS, REST, and GraphQL APIs were integrated cleanly without technical debt. ━━━━━━━━━━━━━━━━━━━━━━━━ 💡 Why Clients Choose Me ━━━━━━━━━━━━━━━━━━━━━━━━ ✅ Production-first mindset and I built for scale, not just demos ✅ Fast, clear communication and 0–4 hour response time ✅ Full ownership, like architecture, development, deployment, and support ✅ North South University CS graduate with strong foundations in algorithms and system design ✅ Long-term partner, as I care about your product after launch, not just the contract ━━━━━━━━━━━━━━━━━━━━━━━━ ⚡ Tech Stack ━━━━━━━━━━━━━━━━━━━━━━━━ Frontend → Next.js, React, TypeScript, Tailwind CSS Backend → NestJS, Node.js, Prisma, REST, GraphQL Database → PostgreSQL, Supabase, MongoDB Cloud & DevOps → AWS, Vercel, Docker, CI/CD pipelines Payments → Stripe Auth → RBAC, JWT, OAuth ━━━━━━━━━━━━━━━━━━━━━━━━ 📌 Selected Work ━━━━━━━━━━━━━━━━━━━━━━━━ 🔹 Group Home Management SaaS - managing 100+ facilities, multi-tenant, role-based, full billing system 🔹 AI-powered real-time dashboard - live data updates, production-grade, used by active clients 🔹 ERP-style internal platform - complex workflows, multi-role access, deployed on AWS ━━━━━━━━━━━━━━━━━━━━━━━━ If you're building or scaling a SaaS product, internal tool, or complex web platform and want it done right the first time, send me a short overview of your project. I'll reply with an honest assessment and a clear plan. 📩 Let's talk. ↗

I am a Data Engineer with a strong focus on building scalable, efficient, and reliable data systems. I help businesses transform raw data into meaningful insights by designing robust data pipelines and optimizing data workflows. I specialize in transforming raw data into structured, high-quality datasets that support analytics, reporting, and business decision-making. With hands-on expertise in AWS and Azure ecosystems, I build efficient ETL/ELT workflows tailored to business needs. I focus on writing clean, optimized, and maintainable code while ensuring performance, scalability, and data integrity. 🔹 💼 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗜 𝗢𝗳𝗳𝗲𝗿 Design and development of ETL / ELT pipelines Building data warehouses and data lakes Data extraction from APIs, databases, and cloud sources Data cleaning, transformation, and preprocessing Workflow orchestration using Apache Airflow / AWS MWAA Cloud-based data solutions (AWS & Azure) Database design, migration, and performance optimization Real-time and batch data processing Debugging and improving existing data systems 🔹 🛠️𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗦𝗸𝗶𝗹𝗹𝘀 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 Python | SQL | C# | C++ 𝗔𝗪𝗦 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 Lambda | Glue | Athena | S3 RDS | DynamoDB | Redshift QuickSight | MWAA 𝗔𝘇𝘂𝗿𝗲 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 Data Factory | Databricks Azure SQL | Synapse Analytics 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 SQL | MSSQL | MySQL | PostgreSQL | MariaDB Oracle | Odoo 𝗗𝗮𝘁𝗮 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗧𝗼𝗼𝗹𝘀 Apache Airflow | Apache Spark | Pandas 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 & 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻 𝗧𝗼𝗼𝗹𝘀 Jira | Trello 🔹 💼𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 Finance Healthcare E-commerce Retail 🔹 🎯 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 Strong expertise in cloud-based data engineering (AWS & Azure) Scalable and high-performance data solutions Clean, well-documented, and maintainable code Reliable communication and timely delivery 🤝If you're looking for a reliable Data Engineer to build or improve your data pipelines, feel free to reach out. I’d be happy to discuss your project and find the best solution for your needs.

Hi, Why choose me over other freelancers ❓ Because I have 🏅 Top Rated Plus Badge (held by the top 1% on Upwork) ⭐ 100% success rate 💼 2800+ hours worked 😎 6+ years of experience working as a JS developer, MERN, MEVN, and MENN stack development. My expertise is listed below -- AI incorporation - OpenAI (for generating AI text) - StabilityAI (for generating AI images) - IBM API -- React js - Redux - Redux Saga - Typescript - Redux Toolkit -- NextJS -- Stripe - Stripe Connect - Stripe Checkout Session - Stripe Payment Link - Stripe Product Creation - Stripe Customer Creation - Stripe Payment through different methods - Stripe Marketplace - Stripe Subscription - Stripe Sponsorship -- Socket.js -- VueJS - Vuetify - Pinia -- Node JS - ExpressJs - RestAPIs - ORM (Sequelize) - JWT -- Styling CSS - Tailwind CSS - MUI - styled-components - Sass - Vuetify -- Databases - MongoDB - NoSQL - SQL - MYSQL - Postgres - Firebase - Supabase -- ORM - Prisma - Sequelize - TypeORM -- AWS services - SES - S3 - EvengtBridge - Cloudformation - Lambda - serverless Architecture - serverless framework - EC2 - Amplify - Route53 - RDS -- Azure - Azure Functions - Azure Static Apps - Azure SQL -- Docker -- CICD and Automation - github workflows - n8n - retool -- PHP - APIs building - bugs fixing - Laravel --workflows: -n8n -retool -github workflows Other Services 1. Video Streaming 2. Screen and Camera Recording in JS 3. SMS/MMS communication in JS 4. Email communication in JS 5. Email Templates in JS 6. Animations in JS 7. Calendar, Time Management, and Managing availabilities in JS 8. Google Analytics Integration 9. Session Recording(to analyze users behaviour) 10. Clerk (For Authentication) I am committed to delivering high-quality results and am always looking for new ways to improve my skills and knowledge.