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Senior Mobile Engineer with 5+ years of experience building and shipping production iOS and Android applications. Strong expertise in React Native, TypeScript, Android native development, mobile architecture, CI/CD, App Store/Google Play releases, performance optimization, testing, and REST/GraphQL integrations. Experienced in fintech/payment applications and secure mobile flows, with a track record of resolving production issues through root-cause analysis and monitoring. Works effectively with distributed engineering teams and mentors others on secure coding and testing practices.…Senior Mobile Engineer with 5+ years of experience building and shipping production iOS and Android applications. Strong expertise in React Native, TypeScript, Android native development, mobile architecture, CI/CD, App Store/Google Play releases, performance optimization, testing, and REST/GraphQL integrations. Experienced in fintech/payment applications and secure mobile flows, with a track record of resolving production issues through root-cause analysis and monitoring. Works effectively with distributed engineering teams and mentors others on secure coding and testing practices.

Dheeraj Khushalani

Web Developer, Programmer, App Developer, +2

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Senior Mobile Engineer with 5+ years of experience building and shipping production iOS and Android applications. Strong expertise in React Native, TypeScript, Android native development, mobile architecture, CI/CD, App Store/Google Play releases, performance optimization, testing, and REST/GraphQL integrations. Experienced in fintech/payment applications and secure mobile flows, with a track record of resolving production issues through root-cause analysis and monitoring. Works effectively with distributed engineering teams and mentors others on secure coding and testing practices.…Senior Mobile Engineer with 5+ years of experience building and shipping production iOS and Android applications. Strong expertise in React Native, TypeScript, Android native development, mobile architecture, CI/CD, App Store/Google Play releases, performance optimization, testing, and REST/GraphQL integrations. Experienced in fintech/payment applications and secure mobile flows, with a track record of resolving production issues through root-cause analysis and monitoring. Works effectively with distributed engineering teams and mentors others on secure coding and testing practices.

Available to hire

Senior Mobile Engineer with 5+ years of experience building and shipping production iOS and Android applications. Strong expertise in React Native, TypeScript, Android native development, mobile architecture, CI/CD, App Store/Google Play releases, performance optimization, testing, and REST/GraphQL integrations.

Experienced in fintech/payment applications and secure mobile flows, with a track record of resolving production issues through root-cause analysis and monitoring. Works effectively with distributed engineering teams and mentors others on secure coding and testing practices.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Work Experience

Senior React Native Engineer at HCLTECH

March 1, 2025 - Present

Working on Western Union’s mobile and web payments app using React Native/Next.js with a GraphQL backend. Built end-to-end digital card management flows integrating real-time internal systems. Developed a custom React Native bridge for MeaWallet MPP SDK enabling PCI-DSS push provisioning on both Android and iOS, supporting a global launch in Australia. Delivered Apple Wallet integrations and led an app-to-web migration including an onboarding carousel that improved new-user activation. Reduced crash rate by 25% using Android Profiler and Crashlytics on a 1M+ DAU app. Implemented custom logging for Redux Saga to accelerate production debugging, mentored junior engineers on bridge development and secure testing practices (reducing onboarding ramp time), and improved test reliability with Jest coverage (85%+) plus Detox E2E for wallet state transitions and card activation. Resolved P0/P1 production defects, including ANRs and crashes, via systematic root-cause analysis and monitoring.

React Native Engineer at Jellyfish Technologies

October 1, 2021 - March 1, 2025

Developed production-ready cross-platform mobile applications from scratch using React Native CLI for FM Integrated Mobile App. Implemented BullMQ + Redis queue system for asynchronous processing, reducing API response latency by 60% for heavy report generation workloads. Enforced security with JWT, RBAC, 2FA, social login, and biometric login. Built automated GitHub Actions and Fastlane CI/CD for three environments to remove local dependencies and cut release turnaround time by 50%. Engineered a background location tracking system using native Android modules, Google Maps, and OpenWeather APIs, increasing daily active time (DAT) by 30%. Architected an offline-first sync engine using Realm DB and Background Work Manager to guarantee zero data loss under unreliable connectivity for field teams. Led Expo-to-bare React Native migration enabling native modules for background location, biometric auth, and hardware integrations across iOS and Android.