Himanshu Nagpal

Senior Android Developer with 10+ years of experience designing, developing, and delivering scalable Android applications across SportsTech, Healthcare, FinTech, Logistics, and Enterprise domains. Strong expertise in Kotlin, Java, Jetpack Compose, Kotlin Multiplatform (KMP/KMM), Android SDK, MVVM, Clean Architecture, Coroutines, Hilt, Room, Firebase, and CI/CD practices. Proven track record of architecting high-performance mobile applications serving 100K+ users, implementing real-time communication systems, optimizing application performance, and leading engineering teams through the complete software development lifecycle.

Experienced in mentoring developers, driving technical decisions, and delivering business-critical mobile solutions.

Senior Software Engineer at Neo SOFT Technologies (2022-07 – 2026-05)

• Architected a WebSocket-based real-time data system for live score updates on Mackolik sports app, reducing data refresh latency by ~40% and supporting 100K+ concurrent users.
• Architected and developed a cross-platform school management solution using Kotlin Multiplatform (KMP) and Compose Multiplatform.
• Implemented Clean Architecture and MVVM to improve code quality and testability.
• Developed 30+ reusable Jetpack Compose UI components adopted across 3 feature teams, cutting average feature delivery time by ~30% and ensuring design consistency.
• Implemented CI/CD pipelines using Jenkins and GitHub, enabling automated build-and-test workflows and reducing manual QA effort by 20%.
• Mentored junior developers on software architecture, debugging strategies, clean coding standards, testing practices, and full software development lifecycle ownership.

Senior Android Developer at Athmin Technology (2021-07 – 2022-07)

• Designed and developed Android applications using Kotlin and MVVM architecture.
• Introduced Hilt dependency injection improving modularity and maintainability.
• Implemented Kotlin Coroutines for asynchronous operations and background processing.
• Introduced dependency injection using Hilt on Android (migrating from manual DI), enhancing modularity and reducing boilerplate code by ~40%.
• Integrated Room database for offline-first functionality, enabling seamless data access for 10K+ users in low-connectivity environments.
• Wrote unit and integration tests using JUnit and Mockito, achieving 70%+ code coverage on core business logic modules.

Senior Android Developer at Beri Udyog Pvt. Ltd. (2018-06 – 2021-06)

• Designed and delivered 8+ application features using Kotlin and Java, contributing to app store rating improvement from 3.8 to 4.4.
• Built and maintained Java-based Spring Boot microservices for payment processing and order management, handling ₹50L+ monthly transaction volume integrated with Paytm and Razorpay.
• Built real-time one-to-one chat, audio, and video calling features using WebRTC and WebSocket, supporting 5K+ daily active users.
• Implemented live location tracking and Google Maps SDK integrations with Java (geofencing, route optimisation) for a logistics feature used by 200+ delivery agents.
• Configured ProGuard/R8 rules and applied performance profiling, reducing APK size by 22% and startup time by 15%.

Android Developer at Defuzed Technology (2016-04 – 2018-05)

• Integrated RESTful APIs using Retrofit and Volley with Java, ensuring smooth client-server communication across 3 production applications.
• Implemented Paytm payment gateway for seamless in-app payments, reducing payment failure rate by 18% through improved error-handling flows.
• Integrated Mixpanel Analytics to track user behaviour, funnel performance, and product metrics, enabling data-driven feature decisions.
• Tracked and resolved 100+ bugs using Jira, contributing to a 30% reduction in post-release critical issues.

B.Tech in Information Technology – Guru Gobind Singh Indraprastha University (GGSIPU) (2011 – 2015)