Shape
Convert requirements into screens, flows, data needs, edge cases, and release scope.
10+ years shipping production software
I build the whole product, not just one layer.
Applied AI and senior product engineer building AI-powered applications, backend services, and complete web and mobile products. I connect LLM workflows, RAG, agents, APIs, data, and UX with the testing, deployment, and operations needed to ship reliably.
Why hire me
One engineer covering the complete delivery chain.
The value is not just knowing tools. It is being able to connect the product, data, integration, deployment, and release decisions without waiting on a separate team for every handoff. My product-management experience spans product shaping, requirements, prioritization, cross-functional execution, QA, and release coordination.
Design UI
Build responsive web and mobile interfaces from Figma, rough wireframes, or direct product direction.
Build APIs
Create auth, REST APIs, background jobs, integrations, real-time workflows, and backend services.
Model Data
Design PostgreSQL, MongoDB, Firebase, Redis, upsert, caching, sync, and event-driven data flows.
Deploy
Handle Firebase, AWS/GCP-style cloud services, Docker concepts, CI/CD, environment setup, and rollout checks.
Operate
Debug production issues, improve performance, validate releases, and keep the product moving after launch.
Proof by product type
Delivered across mobile apps, platforms, ops systems, and AI-enabled workflows.
Consumer Mobile Apps
Flutter and native Android products shipped to Play Store and App Store.
- Classify, Lion Mountain, Sav Money, MatchMde
- Subscriptions, media, chat, payments, statistics, rewards
Healthcare & Workforce
Operational tools where reliability, location, scheduling, and real-time communication matter.
- Shift Alerts, GuniTime, clinician scheduling
- Geolocation, invoices, rosters, offline modules
Business Systems
ERP, testing, inventory, accounting, payroll, and process automation systems.
- Tea ERP, MTAS, GuniSMS
- APIs, reporting, automation, campaign and device flows
Applied AI Engineering
AI-enabled products backed by practical application and systems engineering.
- Generative AI and LLM applications, retrieval-augmented generation (RAG), AI agents and tool workflows, prompt engineering
- AI-assisted PDFVoice project exploring on-device OCR and neural narration
Stack coverage
A practical engineering stack, connected end to end.
Frontend
ReactJS, NextJS, TypeScript, JavaScript, Tailwind CSS, Bootstrap, responsive UI
Mobile
Flutter, Dart, Native Android, Java, Kotlin, store publishing, offline-first app behavior
Backend
NodeJS, Python, REST APIs, auth flows, integrations, background jobs, event-driven workflows
Data
PostgreSQL, MongoDB, Firebase, Redis, Kafka, SQL upserts, caching, real-time sync
Cloud & Ops
Firebase, AWS/GCP concepts, Docker concepts, CI/CD, Git, release validation, debugging
AI Layer
Generative AI, LLM applications, retrieval-augmented generation (RAG), AI agents and tool workflows, prompt engineering, vector search concepts, AI-assisted automation
Open source · 2026
Recent systems you can inspect, run, and evaluate.
Each repository includes its source, setup path, security boundary, and executable verification contract.
GoalX
Local-first Flutter savings and goal tracker with manual accounts, recurring plans, versioned backup, optional owner-scoped Firestore sync, and review-before-write AI guidance.
Robot/Shift
Open 180-day robotics and ROS 2 field manual with deterministic visuals, interactive maths, portfolio projects, cloud progress, and a security-bounded AI tutor. Next.js 16, React 19, TypeScript, and Firebase.
PDFVoice
AI-assisted PDF audiobook project for macOS with on-device OCR, neural narration, forced alignment, and synchronized word highlighting. The app uses SwiftUI, PDFKit, Vision, MLX, and ONNX Runtime.
LocalDub
Open-source audio dubbing preview for Apple Silicon, combining on-device Whisper transcription, Hy-MT2 translation, and Qwen3-TTS reference-voice synthesis through Python and MLX. Supports sequential batches, transcript and translation review, selective speech regeneration, and MP3, WAV, and WebVTT exports. Output requires listening review.
Production product history
Selected shipped products across industries.
Classify
School planner with homework diary, timetable, focus zone, events, clubs, tasks, and progress statistics.
Shift Alerts
Healthcare workforce platform with geolocation clock-in/out, messaging, voice calls, scheduling, invoices, and expenses.
Sav Money
Fintech savings app with goals, rewards, round-ups, auto top-up, card management, challenges, and merchant offers.
Tea ERP System
Field and factory ERP modules for payroll, purchase, production, inventory, sales, machine maintenance, and accounting.
Supporting details
Additional background, kept compact.
Professional record
Full Stack Engineer · Piston
Dec 2023 - Present
- Build product workflows across web applications, backend services and mobile integrations using Next.js, Python, MongoDB, Redis and Flutter.
- Own requirements, APIs, data flows, debugging, testing, release validation and production issue resolution.
Full Stack Developer · Ancile Technologies
Nov 2017 - Nov 2023
- Built mobile and web applications, backend services, REST APIs, data models and integrations across customer products and business systems.
- Owned delivery from requirements and UX through implementation, testing, deployment and operational support using React, Next.js, Node.js, Flutter, native Android, MongoDB and Firebase.
- Delivered messaging, payment, location and subscription workflows.
Flutter and Native Android Developer · Guni - Messaging Platform
Jul 2016 - Oct 2017
- Developed Android mobile automation and network-testing workflows, including scripted WebView interactions, ADB commands, network controls and call testing.
Android Developer · RJS Tech Solution
May 2015 - Jun 2016
- Developed native Android applications, REST/JSON integrations, services, content providers, broadcast receivers and location-aware workflows.
Education and languages
- Post Graduate Diploma, Remote Sensing & GIS · Jadavpur University CAD Centre
- Bachelor of Arts, Geography · A.B.N Seal College
- English, Hindi, Bengali