Senior Full Stack Developer

About Muzn IT Muzn IT (muznit.com) is a product-focused IT and digital services company building enterprise-grade software for the GCC. We design, develop, and operate real SaaS platforms end-to-end — not throwaway projects. Our product portfolio includes: - Sufra Catering Management System — a full catering operations platform - Laundry Management System (LMS) — serving thousands of residents in live production - Muzn IT HRM — an enterprise HR management platform built for GCC organisations - Muzn AI — an AI chatbot SaaS platform - POS — an Electron-based point-of-sale system with thermal printing - Client web platforms, portals, and WordPress solutions, etc. We're now opening our Kolkata office as part of our India expansion — and you could be one of the first engineers to help shape it. The Role: We're looking for a Senior Full Stack Developer who will take direct charge of developing all our products. This is a hands-on, high-impact role — you're the person who turns ideas into working, scalable, secure software. You won't be one small cog in a huge machine. You'll lead features end-to-end, make real architectural decisions, and see your work go live quickly. What You'll Do - Design, build, test, deploy, and maintain our web and desktop applications end to end - Work across the full stack — frontend, backend, database, APIs, and deployment - Build new products from scratch and continuously improve existing ones - Design clean database schemas, optimise queries, and keep performance sharp - Develop and integrate REST APIs and third-party services - Handle deployments, environments, and production support - Debug complex issues and ship permanent fixes, not band-aids - Uphold code quality, security, and engineering best practices - Work closely with the founder and team to plan, prioritise, and deliver Our Tech Stack You should be strong across most of this (and eager to master the rest): - Frontend: React, Vite, TypeScript, modern CSS/UI - Backend: Node.js, Fastify/Express, Python - Database: PostgreSQL, Supabase, SQL optimisation - Desktop: Electron - Infra & Tooling: Docker, Git/GitHub, Linux, CI/CD - CMS & E-commerce: WordPress, Shopify, and similar platforms — must be able to build, customise, integrate, and maintain client websites and stores - Bonus: Redis, job queues (BullMQ), pgvector / AI integrations Development Policy — No AI Coding Tools All development work must be completed independently without using AI tools to generate, write, autocomplete, modify, or debug code. Candidates must demonstrate strong hands-on coding skills, independent problem-solving, and the ability to design, develop, test, and maintain production-ready software without AI coding assistance. AI tools are not permitted for development tasks. What Makes You the Right Fit: We want someone whose mastery shows in their work, not just on paper. The best candidate is: - A genuine full-stack builder who can take a product from an empty repo all the way to production, solo - Fluent in writing clean, efficient, maintainable code - Strong in problem-solving, debugging, and system design - Self-driven, accountable, and reliable in delivering on time - Energised by startups, speed, and real responsibility - Backed by 6 years of hands-on, real-world development experience Please apply only if you genuinely love building — and can back it up with real projects. Why You'll Love Working With Us: This is the part that makes Muzn IT different. We treat our team like partners, not headcount. - Profit share on every product we sell — when the products you build/collaborate on get sold to clients, you earn a share of each sale - Profit sharing — as the company grows, your rewards grow with it - Clear KPIs — know exactly what success looks like, and get recognised for hitting it - A partner, not a number — you'll be trusted, valued, and treated as a core part of the team from day one, with your voice heard in real decisions - Full transparency — open communication, honest numbers, no office politics - A fun, energetic culture — we work hard and genuinely enjoy it, with team entertainment and downtime - Personalised care — we give personalised service to our clients and to our people Tell Us About Yourself We want to truly understand what you've built. In your application, please share: - Products / projects you've developed so far — what they do and who uses them - Your exact role — what you personally designed, coded, and shipped - The tech stack you used - The hardest problem you solved, and how - Any live / production systems you've deployed and maintained - Team experience — did you lead, mentor, or build solo? - Links — GitHub, portfolio, live product URLs, or app demos The more real detail you give us, the better we can see your mastery. Details: - Location: Kolkata (On-site) — [add exact office address] - Experience: 6 years of hands-on full-stack development experience - Employment type: Full-time - Salary: ₹30,000 – ₹45,000 / month (based on experience and technical expertise) + commission + profit share - Working days/hours: Six days, weekly off on Friday How to Apply: Send your resume, portfolio, and product links to [support@muznit.com](mailto:support@muznit.com) — or apply directly here. Tell us what you've built. We read every application personally. Muzn IT — build real products, do your best work, grow with us.