Hariom Agrawal
FullStack Developer
Computer geek who loves building things - apps, systems, tools, or anything that can be improved with code. Passionate about mobile engineering, IoT tinkering, and experimenting with AI. Outside work, enjoys cycling, tennis, gaming, and exploring new places.
HA
- Java
- Kotlin
- JavaScript
- TypeScript
- Python
- Swift
- React
- React Native
- Next.js
- Node.js
- Android
- Selenium
- Appium
- Maestro
- Git
- Azure Pipelines
- CI/CD
- REST APIs
- GraphQL
- SQL
Astro AI
astro.hariomagr.in
- Advanced astrological intelligence system using Swiss Ephemeris for precise natal chart and transit calculations.
- Custom GPT-powered bot with two-stage token optimization: lightweight model filters data before sending to the main analytical model.
- Revolutionary approach that combines ancient astrological wisdom with cutting-edge AI to generate deeply personalized insights that adapt to each user's unique cosmic blueprint.
- Full-stack application with FastAPI backend, Next.js frontend, and Firebase for real-time data syncing and authentication.
- Seamless user experience with instant profile generation, real-time interpretation delivery, and persistent storage allowing users to track their astrological journey over time.
- Production deployment on Vercel (frontend) and Render (backend) with scalable architecture.
Github
Projects
Experience
Headout
Senior Software Engineer- Led the migration from AsyncStorage to MMKV, implementing complete data-migration logic for a seamless, lossless transition and significantly faster storage performance.
- Re-architected the application state layer by replacing React Context with Jotai, reducing unnecessary re-renders and improving UI responsiveness across high-traffic screens.
- Scaled and optimized Drops (flash-sale experiences platform), contributing to a 15% increase in user retention, with multiple drops selling out in under 30 seconds.
- Upgraded React Native from 0.75 → 0.79.3, resolving breaking changes, modernizing dependencies, and ensuring stable rollout across Android and iOS.
- Improved cold-start performance by 40%+ through bundle optimization, resource preloading, native configuration tuning, and architectural cleanup; work featured in a Headout engineering blog.
- Migrated Adyen and Checkout.com payment flows to native (iOS/Android) to meet compliance requirements and improve performance, security, and reliability.
- Implemented and maintained OTA update pipelines, improving release velocity and reducing user-visible regressions.
- Managed end-to-end releases for Android and iOS, including build automation, signing, staged rollout strategy, and crash/performance monitoring.
- Re-architected the booking data model into a unified source of truth for upcoming, past, cancelled, widget, and new bookings; improved reliability, enhanced offline handling, and reduced API calls by 15%+.
- Integrated an external vendor’s audio-guide system, improving user engagement and increasing retention by 13%.
- Redesigned the combos booking flow to reduce friction, decreasing time-to-book by 25%+ from product view to confirmation.
- Profiled application performance using Maestro, JS thread tracing, and render-time diagnostics, implementing optimizations that improved screen rendering performance.
- Led a team of React Native engineers, providing technical direction, mentorship, code reviews, and guidance on architecture and performance best practices.
jupiter.money
SDE II (React Native)- Built and scaled investment products, including mutual fund purchase, redemption, and portfolio management flows.
- Managed app releases across Android and iOS, including build pipelines, rollout, and stability monitoring.
- Launched major payment features: UPI number–based payments, pay-to-contact, and mobile recharges, improving coverage and user payment flexibility.
- Revamped and restructured the payments landing tab and full payments flow; consolidated bank-transfer and UPI experiences into a unified, streamlined flow.
- Designed and launched International Outward Remittance (cross-border payments), including compliance handling, user onboarding, and end-to-end transaction flow.
udaan.com
Product Engineer- Built Price Company from the ground up, contributing to both backend services and frontend systems.
- Developed a React Native voice-assistant library using Azure Speech SDK for bi-directional text-to-speech and speech-to-text.
- Created an editorial framework enabling real-time updates to static pages without requiring app releases.
- Refactored the Udaan app, reducing startup time by 30% and significantly lowering ANRs and crash rates, resulting in higher buyer retention.
- Implemented app-release automation using Azure Pipelines, streamlining build, signing, and deployment for multiple apps.
- Built the Udaan Lite app to reduce memory footprint and decrease ANRs and crash rates on low-end devices.
- Built an API gateway framework that simplified and standardized the creation of new backend services.
- Refactored the authentication service to support multi-device session management.
- Revamped the end-to-end authentication flow, reducing user drop-off by 20%.
- Added complete localization support for the catalog service used across multiple products.
- Built an automation testing framework using Appium to surface major crashes and bugs earlier in the development cycle.
- Managed iOS and Android releases, including rollout strategy, monitoring, and stability management.
udaan.com
Technology Intern- Built a CMS framework (console, backend, and frontend) used across SEO, merchandising, media, and internal tooling.
- Added SEO support to the shared UI core framework used across Udaan apps.
- Built an automated sitemap generator with continuous sync capability.
Freelancer
Full Stack Developer- Completed over 80 client projects on Fiverr, delivering solutions across PHP, Python, Android, Java, and machine learning, consistently meeting high-quality and fast‐turnaround expectations.
The Sparks Foundation
Software Engineer- Developed an Android application involving image processing, REST API integration, and end-to-end feature implementation.
UrbanRider
Android Developer Intern- Developed the admin application, implementing map-based features and building backend services using the CodeIgniter framework.
QuEST Global
Technology Intern- Analyzed the business logic of the company’s internal Java/Spring/Hibernate web application and led the UI revamp using Angular to modernize the user experience.
The Sparks Foundation
Summer Intern- Completed Android development training that included technical modules as well as sessions on résumé development, teamwork, and Scrum practices.
Education
Vellore Institute Of Technology, Vellore
Bachelor of Technology in Information Technology
CGPA 8.78JBS Children Paradise Sr. Secondary School, Kota
CBSE - AISSCE (12th)
Percentage 93.2SYNA International School, Katni
CBSE - SSC (10th)
CGPA 10.00Testimonials
Copyright © 2025 Hariom Agrawal