GenAI prompt systems
PlanningI combine documentation, product requirements, and GenAI prompts into specs, constraints, implementation steps, and review passes.
Welcome
Chanchal Maity
GenAI-assisted engineer
Now featuring
Marketplace, IoT, commerce
Flagship work across AasPas, Smart Box, and commerce products with real workflows, backend logic, mobile UX, payments, and device control.
GenAI-assisted execution
Fast delivery, verified logic
I use GPT, Claude, and Gemini to move faster, then verify architecture, edge cases, and production behavior before shipping.
AI-native / GenAI product engineer
I build production-ready apps across mobile, backend, realtime, IoT, and complex product logic.
I am Chanchal Maity. My strongest work combines React Native, Next.js, Node.js, MongoDB, Socket.IO, native Android modules, payments, maps, and GenAI-assisted engineering into complete product systems with strong debugging and problem-solving depth.
3+ years
Product engineering
DSA + debugging
Problem solving
Mobile + backend
End-to-end ownership
Realtime
Maps, sockets, payments
React NativeFlutterNext.jsReactTypeScriptJavaScriptNode.jsExpress.jsMongoDBSocket.IOWebRTCESP32JavaPythonDSAProblem Solving
AI workflow
AI-native and GenAI-assisted, but engineering-led
I use GPT, Claude, and Gemini as GenAI engineering accelerators. The value is not only speed; it is self-directed learning, documentation reading, scoped prompting, careful review, and the ability to turn assistance into shippable work.
Speed with ownership, review, and production judgment
Verified logic
Verified delivery
Speed matters, but trust matters more. I use verification loops so GenAI-assisted output can still hold up in real production logic.
GenAI as a force multiplierSpeed with verification
How I use AI in real builds
I use documentation plus GenAI to speed up architecture planning, debugging, implementation, and refactoring. Then I review the result like normal engineering work: code paths, edge cases, build output, and product behavior.
Applied across AasPas Marketplace, Smart Box, and Private Theater where mobile, backend, realtime, and device flows all need careful decisions.
Self-directed learningDocumentation readingGenAI workflowsGPTClaudeGeminiPrompt decompositionVerification loopsArchitecture promptingDiff review
Verification discipline
QualityI check GenAI-assisted output against code, edge cases, runtime behavior, and product requirements instead of accepting it blindly.
Faster delivery
LeverageThis workflow helps me ship larger solo builds without losing ownership of architecture, debugging, and final decisions.
Product engineering portfolio
Product systems, shown clearly.
Real app screens, concise proof, and enough engineering detail to understand the depth without overloading the home page.
Flagship case study
AasPas
Solo-built production-scale marketplace
AasPas is a full-stack hyperlocal services platform with customer booking, worker operations, live worker tracking, native voice calls, payment automation, worker earnings, multilingual UX, support flows, and admin-ready operations.
Built as a complete marketplace system, not a UI demo: role-based apps, backend APIs, native Android modules, realtime state, payment logic, and operational tools.
Solo built
End-to-end ownership across mobile, backend, native Android, and ops
3 product surfaces
Customer app, worker app, and admin control layer
12 languages
Localized mobile experience for real Indian service markets
Realtime + native
Socket rooms, FCM, maps, calling, lock-screen, and background flows
Wallet + payments
Advance fee, remaining due, worker earnings, commission, and settlement
Recovery-aware
Redis hot state with Mongo durability and route fallback behavior
AasPas depth
Interview proofMarketplace-grade payment engine
Minimum booking fee, online or cash booking flow, backend-owned payment truth, remaining amount collection, worker earnings, commission logic, wallet records, and settlement-oriented money movement.
Realtime tracking and location intelligence
Live worker location streaming, route caching, ETA and distance awareness, service-radius discovery logic, latest-location recovery, and controlled rerouting instead of wasteful map API calls.
Native Android communication layer
Incoming booking popups, native call activities, full-screen notification behavior, lock-screen entry, ongoing-call return path, speaker and earpiece control, and background-safe calling UX.
Operational depth beyond the main app
Support, reviews, notifications, version control, admin oversight, video/tutorial management, service monitoring, and business-side visibility across the marketplace lifecycle.
Flagship product
AasPas
A hyperlocal service platform with booking, worker operations, AI help, live tracking, native calls, payments, wallet settlement, support, reviews, and admin workflows.
Complete marketplace proof: role-based apps, backend APIs, native Android modules, realtime sockets, route caching, multilingual AI, payment reconciliation, earnings, and operations.
Real app screens
One screen per phone
Marketplace identity
Brand visual
Discovery flow
Customer home
Combo builder
Service packages
Checkout state
Payment setup
Conversational assist
AI booking help
Live movement
Tracking map
Daily controls
Worker home
Income visibility
Worker earnings
Settlement layer
Wallet summary
Service search
Customer discovery
Service combos
Package selection
Secure checkout
Payment automation
Multilingual help
AI concierge
ETA and map state
Live tracking
Field workflow
Active job operations
Daily control
Worker operations
Earnings layer
Wallet visibility
Money correctness
Per-job breakdown
System proof
Marketplace-grade payment engine
Minimum booking fee, online or cash booking flow, backend-owned payment truth, remaining amount collection, worker earnings, commission logic, wallet records, and settlement-oriented money movement.
Realtime tracking and location intelligence
Live worker location streaming, route caching, ETA and distance awareness, service-radius discovery logic, latest-location recovery, and controlled rerouting instead of wasteful map API calls.
Native Android communication layer
Incoming booking popups, native call activities, full-screen notification behavior, lock-screen entry, ongoing-call return path, speaker and earpiece control, and background-safe calling UX.
Operational depth beyond the main app
Support, reviews, notifications, version control, admin oversight, video/tutorial management, service monitoring, and business-side visibility across the marketplace lifecycle.
Feature proof
Service discovery and worker matching
Multilingual AI booking assistant
React Native StyleSheet-based native UI system
Native booking popup and call flows
Smooth live worker tracking
Service-radius and availability logic
React NativeReact Native StyleSheetExpoTypeScriptNode.jsExpress.jsMongoDBSocket.IORedisFirebase FCMAgoraRazorpayGoogle Maps
Skill map
Engineering range
A compact map of the tools and systems I use to ship complete products.
Mobile engineering
React Native and Flutter apps with native Android, maps, notifications, payments, and real device behavior.
React NativeExpoFlutterNative Android modulesFirebase FCMGoogle MapsAgora calls
Backend systems
APIs, realtime state, database models, auth, payments, and operational flows for product backends.
Node.jsExpress.jsMongoDBMongooseSocket.IORedis patternsDjangoFlask
Web products
Next.js and React websites, dashboards, SEO structure, responsive UI, and deployment-ready frontend work.
Next.jsReactTypeScriptTailwind CSSFramer MotionSEO structureHTML5CSS3
Product architecture
Reliable booking, payment, tracking, recovery, role-based UX, and admin workflows.
Payment flowsRole-based UXRealtime roomsRecovery logici18nAdmin tooling
Problem solving and debugging
DSA-style thinking for edge cases, state correctness, recovery paths, and hard production bugs.
Problem solvingData structuresAlgorithmsDebuggingEdge casesState consistencyRace conditions
Tooling and delivery
Version control, API testing, package workflows, and deployment tools used across full-stack projects.
GitGitHubPostmanAPI testingnpmVercelRenderDeployment workflows
Languages and foundations
Comfort across product languages, lower-level foundations, markup, styling, and application logic.
TypeScriptJavaScriptJavaPythonCC++HTML5CSS3BootstrapSQL
GenAI workflows and prompt engineering
Self-directed GenAI-assisted learning with documentation, GPT, Claude, and Gemini for architecture breakdown, review loops, debugging, and faster delivery.
GenAI-assisted developmentSelf-directed learningDocumentation readingPrompt orchestrationHallucination controlMulti-step verificationArchitecture promptingGenAI-assisted debuggingSpec refinement
Selected work
Selected product work
A concise view of the strongest systems. Open details only when you want the deeper engineering proof.
AasPas is the flagship proof: maps, payments, wallet logic, realtime booking, native Android, worker operations, and admin controls in one connected marketplace.
Customer home
DiscoveryAI chatTrackingPaymentsWallet
AasPas - Hyperlocal Service Marketplace
A full-stack React Native and Node.js service marketplace with booking, payments, tracking, worker operations, AI help, native calls, and admin logic.
Flagship proof of solo ownership across mobile UX, backend architecture, native Android, realtime state, payment correctness, and operations.
React NativeExpoTypeScriptNode.jsMongoDBSocket.IORedisFirebase FCMAgoraRazorpay
Realtime control
Energy analytics
AasPas Smart Box - Connected IoT Control Platform
A smart-switch platform with ESP32 hardware, cloud APIs, mobile app, web dashboard, relay automation, energy analytics, and recovery behavior.
End-to-end IoT proof across device identity, backend automation, realtime sync, energy logic, UX, and power-loss handling.
ESP32ExpoReact NativeNext.jsNode.jsMongoDB
Commerce productMushdelight - Premium Food Commerce
A premium food-commerce website with auth, OTP verification, orders, reviews, subscriber communication, and admin operations.
Shows commerce depth through customer accounts, Mongo-backed orders, reviews, email flows, and brand-ready tooling.
Next.js 15React 19TypeScriptMongoDBMongooseJWT patterns
Retail commerce systemLizz-Shop - Retail E-commerce Platform
A retail storefront with search, category browsing, variant-aware product pages, sessions, wishlist, cart persistence, and merchandising.
Practical ecommerce engineering with JWT sessions, MongoDB user state, variants, persistent shopping intent, and retail presentation.
Next.js 15TypeScriptNode.jsExpress.jsMongoDB AtlasMongoose
Realtime web productAasPas Private Theater - Realtime Watch Party Website
A collaborative watch-party website with host playback control, room links, WebRTC voice, chat, reactions, and multi-source video support.
Realtime media proof across playback authority, player abstraction, Socket.IO room sync, Mongo recovery, and WebRTC.
Next.jsReact 19TypeScriptNode.jsMongoDBSocket.IO
Telephony workflow appVisual Voicemail System
An Android-first visual voicemail product with Twilio forwarding, inbox state, greeting setup, and audio playback.
Shows cross-layer thinking across telephony webhooks, Mongo storage, greeting handling, and mobile inbox UX.
React NativeNode.jsExpress.jsMongoDBMongooseTwilio
Mobile imaging productAI Camera Pro
A premium camera-style React Native app with capture modes, import, permissions, enhancement flow, quality selection, and preview polish.
Highlights mobile craftsmanship around permissions, processing, animation, and richer camera interactions.
React NativeTypeScriptImage PickerImage Resizerreact-native-permissionsAnimated API
Live demoBuilding Junction - Architecture Consultancy
A business website for an architecture consultancy with service storytelling, portfolio presentation, responsive sections, and lead flow.
Demonstrates brand positioning, responsive design, SEO-friendly hierarchy, and business-focused execution.
Next.js 15TypeScriptTailwind CSSResponsive DesignSEOFramer Motion
Hackathon projectEduQuest - Gamified Learning Platform
A gamified learning product with quiz flows, progress mechanics, role-based ideas, PWA thinking, and interactive frontend work.
Highlights product creativity with learning loops, gamification, responsive UX, and rapid execution.
ReactTypeScriptViteReact Three FiberPWATailwind CSS
NDA protected
Private Client Systems
Confidential client work across commerce, dashboards, booking systems, realtime workflows, payments, and business websites.
Shows delivery under client constraints, NDA responsibility, and business-to-software execution.
ReactNext.jsNode.jsMongoDBTypeScriptSocket.IO
About me
Product-minded engineer
Available for remote rolesThree-plus years building productsSelf-directed + GenAI
Chanchal Maity
I build products where mobile UX, backend correctness, realtime state, and business workflows need to work together. My strongest proof is AasPas: a full-stack service marketplace with native Android flows, tracking, payments, worker operations, AI booking support, admin logic, and complex recovery problems.
I am focused on remote roles and product teams that value ownership, AI-native and GenAI-assisted execution, and the ability to learn from documentation, debug across frontend, backend, native mobile, data structures, and real user flows.
Complete user journeys over isolated UI screens.
Backend truth for payments, bookings, and recovery.
Data-structure thinking for complex state and edge cases.
Native Android when cross-platform code is not enough.
Practical reliability on real devices and weak networks.
Experience
Building history
Founder & Lead Product Engineer
AasPas India
Building AasPas as a full-stack service marketplace with native Android calling, live tracking, payments, sockets, AI booking support, worker operations, and admin-ready backend logic.
Designed booking, tracking, payment, wallet, review, and support workflows
Built native Android modules for call screens, notifications, location, and background behavior
Implemented Socket.IO architecture for customer, worker, booking, and admin rooms
Solved edge cases around active jobs, weak networks, recovery, and realtime state consistency
Technical Integration Specialist
Brightex Solutions P Ltd
Worked on device performance optimization and component-level software-hardware integration workflows.
Optimized device performance across technical integration workflows
Managed software-hardware synergy at component and device-behavior level
Strengthened practical debugging, system diagnosis, and reliability-focused engineering habits
Built hardware-aware foundations useful for native Android, IoT, and real-device product work
TRC Engineer, QC Department
Aforeserve.Com Ltd - Lenovo service workflow
Worked in Lenovo service workflows around device quality checks, diagnosis, and hardware-aware debugging.
Diagnosed Lenovo device quality issues across service workflows
Built practical troubleshooting and quality-control discipline
Developed hardware-aware debugging foundations for device reliability
Improved real-device diagnosis habits that now support mobile and IoT product work
Education
Academic proof and certificates
Hardware, networking, board examination, and full-stack certification background behind my product work.
Full-Stack Software Engineering Certificate
Meta / Coursera
Professional certification covering advanced JavaScript, React, backend development, and production-style full-stack workflows.
Diploma in Computer Hardware & Networking
The George Telegraph Training Institute
Hardware, networking, troubleshooting, device behavior, and component-level foundations that support my software-hardware product work.
Higher Secondary Board Examination
Nachinda Jibankrishna High School
Completed HS board examination with 85.4%, building the academic base before moving into hardware, networking, and software engineering.
Contact
Let us build something reliable.
I am open to remote roles, freelance work, and interviews where I can discuss real product engineering: mobile apps, backend systems, payments, maps, realtime infrastructure, and native Android behavior.
Email
chanchal@aaspasindia.com
WhatsApp
+91 99329 15707
Location
Remote-ready from India
Focus
Full-stack, React Native, realtime systems