Java Backend Engineer · Android & KMP Developer · AI/LLM Builder
4+ years shipping production systems at scale — backends, mobile apps, and agentic AI workflows
I'm a full-stack builder who works across Java microservices on the backend and Kotlin/KMP on mobile — often on the same product. At StyleWork (4+ years), I owned features end-to-end: from designing PostgreSQL schemas and Spring Security configs, to shipping production Android releases on Google Play.
Lately I've been deep into practical AI — building RAG pipelines, LLM-powered automation with n8n, and OpenAI integrations that cut real operational overhead (not just demos).
|
|
|
|
A full-featured enterprise CRM for lead management, sales pipelines, and business workflows.
- JWT auth + RBAC with data isolation across multiple tenants
- Normalized DB schemas with strategic indexing for low-latency reads
- Paginated, filterable REST endpoints with Swagger/OpenAPI docs
Multi-module SaaS backend combining task management and blogging with shared auth.
- Sub-100ms response times under load via Redis caching + query tuning
- Refresh token rotation, role-based route protection, end-to-end JWT lifecycle
Full-stack Android app — restaurant discovery, cart, real-time order tracking, push notifications.
- JWT-secured APIs + offline persistence via Room
- Coroutine-based concurrency for measurably faster screen load times
- GitHub →
Cross-platform CRM sharing 70%+ business logic between Android and iOS via Kotlin Multiplatform.
- Shared KMP modules: networking, persistence, lead tracking, real-time sync
- Full feature parity on both platforms with an offline-first data strategy
- GitHub →
| Metric | Result |
|---|---|
| APK size reduction | 61% (23 MB → 9 MB) |
| UI codebase reduction via Design Language System | 20% |
| Cold-start improvement | 15% via lazy initialization |
| Hot-start improvement | 20% via singleton patterns |
| Operational overhead cut via LLM automation | ~40% |
| DSA problems solved | 400+ (LeetCode / GFG) |
| XML screens migrated to Jetpack Compose | 50+ |
Software Engineer — Backend & Android · StyleWork Innovation Hub, Gurugram
Jan 2022 – May 2026
- Architected Spring Boot microservices handling production-grade traffic
- Built RAG pipeline using OpenAI Embeddings + vector DB for semantic document search
- Automated business workflows with n8n, webhooks, and Zoho CRM LLM integration
- Migrated 50+ screens from XML to Jetpack Compose; built a full Design Language System
- Owned end-to-end delivery to Google Play Store and Apple App Store
- Contributed to iOS codebase — SwiftUI components + Alamofire API integration
B.Tech, Information Technology — IIMT College of Engineering / AKTU, Saharanpur · CGPA: 6.8 Diploma, Computer Science — Dev Bhoomi Institute / UPBTE, Saharanpur · 74%
Open to backend, mobile, or full-stack roles where I can own things end-to-end.
sorabhkumardev@gmail.com