Headline

Senior Android Engineer | Android (7+ yrs) • React Native (Expo) • ReactJS | Scalable, Reliable & User-Centered Apps

About

I’m a Senior Mobile Engineer with 6.5+ years of experience building scalable, high-performing apps that thrive in real-world conditions. With a strong foundation in native Android (6+ yrs) and expertise in React Native (Expo) and ReactJS, I deliver the best of both worlds: platform depth and cross-platform agility. I’ve delivered products across Agritech, Healthtech, Insurtech, and Petcare, achieving outcomes like: 🚀 Driving full adoption of new mobile platforms within weeks, with tens of thousands of actions completed monthly. ⚡ 50–60% faster performance through optimized architectures and offline-first design. 🎮 20% boost in engagement via gamification and real-time campaign frameworks. ⏱️ Reducing onboarding time by 80%+, accelerating workforce productivity. Beyond features and performance, I focus on: Engineering Excellence: clean architecture, CI/CD pipelines, reusable UI systems, secure authentication. Collaboration: partnering with product & design to deliver pixel-perfect, intuitive apps. Team Growth: mentoring Android engineers transitioning into cross-platform development. What excites me most is building products that create measurable impact at scale — making technology more reliable, accessible, and engaging for end users.

Location

Bengaluru

AI stack

claude code

claude

codex

cursor

github copilot

openclaw

Work experience

Android Developer Consultant at Upstox, Jan 2026 - Aug 2026 · 8 mos, Bengaluru, Karnataka, India, Built custom Claude Code skills for widget migration and code review, using ticket- and hook-based context persistence to accelerate Upstox Android App new Home UI revamp that introduced a new screen-agnostic framework for reusing widgets across layouts, cutting UI duplication. Took the Positions PnL Graph from POC to production, shipping a custom chart renderer with a NIFTY 50 benchmark overlay now core to the trading experience. Designed a subscription cross-sell and feature-gating framework adopted across premium features, including alerts and PnL tools. Refactored feature sharing from inheritance to composition to eliminate shared-logic duplication across widget ViewModels as new widget APIs rolled out, landing a generic implementation any team can now plug into new widgets.

Senior Software Engineer at Upstox (Recro), Jan 2026 - Aug 2026 · 8 mos, Shipped the Positions PnL Graph from proof-of-concept to production for ~300K MAU, building a custom chart renderer with a NIFTY 50 benchmark overlay now core to the trading experience. Built custom Claude Code skills for widget migration and code review, migrating 100+ widgets in two weeks (fully tested) during the Home UI revamp. Introduced a screen-agnostic widget framework for reusing widgets across layouts, cutting UI duplication app-wide. Designed a subscription cross-sell and feature-gating framework, live on premium features like alerts and PnL tools and rolling out platform-wide. Refactored feature sharing from inheritance to composition, eliminating shared-logic duplication across widget ViewModels and landing a generic implementation any team can plug into new widgets. Cut API costs by ~20%, removing redundant calls from the widget data layer.

Android Developer at Jiva, May 2022 - Sep 2025 · 3 yrs 5 mos, Remote, At Jiva, I worked on development of mobile and web solutions empowering micro-collectors and farmers across Indonesia. My work focused on building offline-first, user-friendly apps for a largely non-technical user base in low-connectivity environments. Jiva Ops (React Native – Expo): Architected and launched Bizom’s replacement app, saving the company $16K annually. Delivered beat planning with geofencing, scheduling, product catalog, and offline-first support with Drizzle ORM. Achieved 100% adoption in the first month, 30K+ beats scheduled in 2 months, 30% faster planning, 90%+ automated verification, and 50–60% faster load times compared to Bizom. Candidate Recruitment (ReactJS SPA): Built onboarding app that reduced onboarding time from 10 days to 1–2 days, optimized bundle size (largest chunk reduced from 1MB → 554KB), and lowered operational costs. Delivered reusable form components and created a Chrome extension that automated QA form testing. Engagement Framework & MC-Tiering (Android – Kotlin, Jetpack): Implemented gamified modules that incentivized micro-collectors through tier progression and campaigns. Resulted in a 20% increase in DAU/MAU. Redeem Store: Enabled redemption of engagement points for vouchers and products directly within the Sahabat Jiva app. Impact: Drove multiple cost-saving initiatives and process efficiencies (licensing cost reduction, beat verification automation, faster onboarding). Established engineering best practices (CI/CD pipelines, Expo OTA updates, reusable UI libraries, testing frameworks). Partnered closely with design and product teams to deliver pixel-perfect experiences that balanced usability with scalability.

Android Developer at DigiRecords (Digiscribe Pvt Ltd), Jan 2020 - Apr 2022 · 2 yrs 4 mos, Mumbai Metropolitan Region, Launched teleconsultation by evaluating WebRTC SDKs (Agora, Twilio) and integrating Twilio, scaling to 1,000+ consults per month. Migrated the entire codebase from Java to Kotlin. Integrated a Wacom BLE digital pad for on-screen prescription writing, driving adoption among doctors previously resistant to mobile input. Set up offline-first data sync with Couchbase and maintained the EMR apps used by doctors and receptionists.

Android Developer at Chien Technologies Pvt Ltd, Apr 2019 - Dec 2019 · 9 mos, Mumbai, Shipped 3 apps (DoggieTheApp, Vetolution, Doggie Walker) to the Play Store solo within 9 months. Built real-time dog-walker location tracking on the Google Maps APIs, plus Agora video consults and Paytm payments across all 3 apps.

Education

Bachelor of Engineering, Electronics, Watumall Institute

Public links

github: https://github.com/kalpeshVarma