Mujeeb u.

Mujeeb | Full-Stack Developer — Production SaaS + n8n Automation & AI Workflows I'm a full-stack developer with 4+ years of experience building production web applications, with focused, proven experience in Healthcare SaaS and FinTech / finance-operations platforms. Alongside that, I'm trained in n8n workflow automation (2 completed courses, hands-on expereinece building automation agents) — so I don't just build interfaces, I can also automate the manual processes behind them. I work end-to-end with Next.js, NestJS, React, Node.js, MongoDB, and PostgreSQL — architecture that holds up under real production load, which is the bar healthcare and finance products require. My recent work spans several industries: an invoice and accounts-receivable management platform (multi-tenant portals, role-based access, reconcile workflows, audit trails), a hospital management system with separate patient, doctor, and admin portals plus telehealth consultations, a full-lifecycle real estate CRM covering leads through construction and ownership with WhatsApp and Meta lead integrations, and a grocery e-commerce platform with its own in-house delivery and rider system. I've also built healthcare workflow automation on Microsoft Power Automate, Dataverse, and Cosmos DB to sync data across a Microsoft stack. On the automation side: I've completed two n8n courses and built practice automation agents — connecting APIs, triggering actions, and automating manual workflow steps. I'm now applying that alongside my full-stack background, and continuing to expand into broader AI-powered workflows (LLM integrations, retrieval-augmented systems) rather than bolting AI on as a buzzword. What I Can Do for You: ✅ Full-stack web apps (Next.js, NestJS, React, Node.js, MERN) ✅ Workflow automation with n8n (trained — 2 completed courses, hands-on practice agents) ✅ Finance/operations SaaS: invoicing, accounts receivable, reconciliation workflows, approval flows, management dashboards ✅ Multi-tenant SaaS: org/company isolation, invite-only onboarding, role-based access control, audit logging ✅ Healthcare SaaS: patient/doctor/admin portals, scheduling, telehealth, diagnostics workflows ✅ Real estate / property management CRMs: leads, filing, installments, sales, construction, ownership, utility billing ✅ E-commerce & logistics platforms: order management, delivery/rider systems, payment integration ✅ Power Automate, Dataverse & Cosmos DB: flow design, data modeling, system-to-system sync ✅ Frontend: React, Next.js, Tailwind CSS, ShadCN UI ✅ Backend: Node.js, Express, NestJS ✅ API design (REST) and third-party integrations ✅ Database design (MongoDB, PostgreSQL, Dataverse, Cosmos DB) ✅ Authentication & access control (JWT, OAuth2, RBAC) ✅ Admin dashboards & internal tools ✅ Design-to-UI from Figma/PSD/XD ✅ Performance work, code audits, bug fixing ✅ Database modeling with ORMs (Prisma, TypeORM, Mongoose) ✅ Redis caching & session management ✅ Queues & background jobs (BullMQ/RabbitMQ) for imports and async processing ✅ Cron jobs & scheduled background tasks ✅ Real-time features with WebSockets (notifications, live dashboards) ✅ API design: REST and GraphQL ✅ Payment integration (Stripe, PayPal) — checkout, subscriptions ✅ Transactional email/SMS (SendGrid, Twilio, or similar) ✅ File storage & uploads (S3, Cloudinary, or similar) ✅ Cloud infrastructure: AWS (S3, EC2, Lambda), Nginx reverse proxy setup ✅ Production monitoring & error tracking (Sentry or similar) ✅ CI/CD and deployment (VPS, Docker, GitHub Actions) ✅ Actively building: broader AI/LLM integration, RAG-based tools Tech Stack: Next.js, NestJS, React, TypeScript, Node.js, Express, n8n, MongoDB, PostgreSQL, Cosmos DB, Dataverse, Prisma/TypeORM/Mongoose, Redis, BullMQ/RabbitMQ, WebSockets, REST, GraphQL, Stripe/PayPal, AWS (S3/EC2/Lambda), Nginx, Sentry, Docker, GitHub Actions, Power Automate, Power Platform, Tailwind CSS, ShadCN UI, Redux, Git/GitHub, VPS deployment — with OpenAI API and RAG/vector-database workflows currently in active development (not yet delivered). Why Work With Me: ✅ 4+ years shipping production systems, Top Rated on Upwork, 100% Job Success ✅ Full-stack foundation plus trained n8n automation skills — I build systems and automate the manual work around them, not just interfaces ✅ Real finance-operations experience: invoice/AR management, reconcile workflows, audit-first design ✅ Real healthcare-workflow automation experience with Microsoft Power Platform ✅ Transparent about what's proven vs. what I'm currently building — no buzzword-stuffed promises ✅ Clean, modular, handoff-ready code ✅ Clear communication and reliable delivery I've helped clients ship from MVP to production SaaS. If you need a developer who understands real business workflows — finance, healthcare, or operations — and builds solid, maintainable systems, I'd like to help you build it.