Upendar Reddy

Senior Mobile Software Engineer with 4+ years of experience building scalable cross-platform applications using React Native, with strong architecture expertise across Android (Kotlin/Java) and iOS (Swift, SwiftUI, Objective-C). Proven track record designing mobile architectures, integrating hardware SDKs, payment systems, and AI-powered features for platforms scaled to 500K+ users.

Software Engineer and Senior Mobile Developer at Premium Parking | Xebia Link (2024-08 – Present)

• Migrated production applications to React Native's New Architecture (TurboModules & Fabric), optimizing performance with the Hermes Engine while maintaining a 99.2% crash-free rate across 500K+ Android and iOS users.
• Integrated Native Android and iOS capabilities including Automatic License Plate Recognition (ALPR), NFC, Tap-to-Pay, Bluetooth peripherals, and hardware communication to streamline real-time parking operations.
• Developed mobile and web features by integrating React Native applications with Ruby-based microservices and React.js operational dashboards.
• Strengthened mobile application security using Google Play Integrity API, App Attestation, secure API communication, and request validation to protect production environments.
• Owned end-to-end release engineering workflows via Google Play Console and App Store Connect (handling provisioning profiles, TestFlight, and automated rollouts) while driving a 15% increase in annual revenue through runtime profiling and SDK modernization.

Associate Software Engineer at Xebia Link (2022-09 – 2024-07)

• Built Reusable React Native components, custom React Hooks, and shared application architecture, reducing feature development effort by 80% across multiple production applications.
• Led the migration from Square to Stripe and modernized legacy Android codebases from Java to Kotlin, increasing successful transactions by 45%.
• Implemented client-side state management, networking, and offline data synchronization using Redux Toolkit, Zustand, React Query, Axios, Retrofit, OkHttp, RoomDB, Firebase, REST APIs, and GraphQL.
• Integrated Mapbox, Zebra SDK, and Labelary to support geolocation mapping, low-level hardware communication, and operational receipt printing workflows.
• Optimized Android production builds using R8 and ProGuard for strict code obfuscation and resource shrinking—reducing APK size—while resolving complex production issues through cross-functional code reviews.

Project Engineer Intern at Xebia Link (2022-03 – 2022-08)

• Engineered partner-facing features by integrating Peek travel experiences and external partner systems to improve user engagement and booking workflows.
• Built automated CI/CD pipelines using GitHub Actions, streamlining build and deployment workflows across Production, QA, and Staging environments.
• Optimized application navigation using React Navigation in collaboration with UI/UX teams, improving responsiveness and overall user experience.
• Modernized legacy Android applications by upgrading Gradle, Apollo GraphQL, Mapbox, and supporting dependencies, improving build stability and long-term maintainability.
• Diagnosed and resolved production issues using Android Studio, Logcat, profiling tools, and root cause analysis.

B.TECH in CSE – CMR INSTITUTE OF TECHNOLOGY

INTERMEDIATE – NARAYANA JUNIOR COLLEGE

SSC – TEJA HGH SCHOOL