Full-Stack Engineer (Node.js · React · React Native · AI/NLP)
7+ years building production-grade, cloud-native systems · Founder of Langphy (22-service distributed system) · Delivered for clients in 🇩🇪 🇬🇧 🇺🇸
I'm a Full-Stack Engineer with 7+ years of experience building production-grade, cloud-native systems for global startups and enterprises — across SaaS, HealthTech, real estate, and AI domains.
My most ambitious work to date: I independently designed, architected, and shipped Langphy — an offline-first German language learning app backed by 22 deployed microservices (17 Node.js + 2 Python), Kafka event streaming, PostgreSQL, MongoDB, Redis, and a real-time NLP/speech evaluation pipeline (Faster-Whisper + spaCy).
I've delivered projects for clients in Germany, the UK, and the US, and I thrive in async, cross-timezone teams. I hold an IBM AI Engineering certification (Coursera, 2025) and bring advanced English plus basic German to the table.
A battle-tested stack across mobile, backend, infrastructure, and AI — refined through 7+ years of production work.
An offline-first German language learning app I designed, architected, and shipped solo — every layer, from mobile client to distributed backend to infrastructure. A real-time NLP/speech evaluation pipeline powers adaptive feedback at scale.
Offline-first language learning app with a 22-service distributed backend and real-time NLP speech evaluation pipeline. Built solo from mobile UI to infrastructure.
Cross-platform React Native app for event hosting, social feeds, and real-time notifications with interactive social feed including likes, comments, and media sharing.
Cross-platform React Native app built for elders with automated check-in and escalation workflows. Integrated Stripe, Firebase, and Twilio for payments and real-time communication.
React Native social meetup platform connecting users through shared interests and events. GDPR-ready with WebRTC video/chat, real-time messaging, and role-based access.
Hybrid real-estate app with custom WordPress REST API endpoints. Achieved a 20% increase in user engagement and 30% reduction in load times.
Full event management system with QR ticketing, registration, guest passes, and entry/exit tracking. React Admin panel with OAuth2 authentication.
He delivered very quickly. We worked together until the work was 100% perfect. He even helped me with additional items beyond the scope.
This seller is Forever amazing. He's always after client satisfaction. I will order over and over again. Thanks!
Niloy is a dream to work with. I am a very picky customer. He listens, is patient, and consistently delivers results that exceed expectations.
He made himself quite available and was diligent in completing the work. He conducted himself in a very professional manner throughout.
Such a patient pro at what he does. Will most definitely be working with Niloy Rudra again!
Open to full-time remote roles, freelance contracts, and relocation opportunities. I work best in async, cross-timezone environments with ambitious teams building real products.
contact@niloyrudra.com