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Prabhanjan KR

@prabhanjankr

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Senior iOS Staff Engineer with 10+ years building scalable apps and SDKs, optimizing performance and leading teams.

India

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What I'm looking for

I’m looking to architect and build large-scale iOS/tvOS products and SDKs, lead teams, and drive measurable performance, security, and reliability improvements—especially in streaming, wearable/mobile, and cross-platform experiences.

I’m an iOS/tvOS engineer with 10+ years of experience building large-scale mobile apps and SDKs for unicorn products including ioHotstar, Paytm, MPL Games, and Medi-Assist. I’ve delivered apps that reached the Top 10 in Apple’s featured lists and built scalable architectures using VIPER, MVVM, Redux, plus performance optimization and security-focused implementations.

In my recent roles, I architected and built Public Safety Apps on iOS for US Police and Military, including video streaming wearable/mobile workflows with background processing and wireless interaction. Previously, I built a tvOS Ads SDK from scratch, reduced startup time from ~7s to 2.6s through caching and async/pagination optimizations, and led teams of developers through major delivery cycles. I’ve also delivered high-performance native bridges (C++ for low-latency iOS↔React Native↔Unity interactions), improved scalability and stability to achieve 99.5%+ crash-free rate, rebuilt apps with Swift, and strengthened data security with protections like hashing and SSL pinning.

Experience

Work history, roles, and key accomplishments

Current

Sr. Staff Engineer (iOS)

Current

Oracle

Apr 2025 - Present (1 year 2 months)

Architected and built a suite of Public Safety iOS apps for US Police and Military, focusing on a wearable video-streaming experience with security, background processing, and body-cam wireless interaction. Built chat and wearable camera apps using SwiftUI/Redux with Swift 6+ components.

Swift SwiftUI Redux Swift 6 GraphQL SSH Security & Privacy

Assistant Manager (SSDE1)

Jio Hotstar (Viacom18 Media)

Sep 2023 - Apr 2025 (1 year 7 months)

Built JioCinema ads SDK from scratch and redesigned the home experience and player UI for tvOS on an OTT platform (~36M DAU). Reduced app startup time from ~7s to 2.6s by caching API responses, optimizing async API calls, enabling pagination, and delaying SDK initialization; managed an Apple TV developer team across 3 IPL events.

Swift TvOS Development Caching Pagination Performance Optimization Team Leadership

Senior Software Engineer III

Mobile Premier League (MPL)

Mar 2022 - Aug 2023 (1 year 5 months)

Implemented a high-performance C++ bridge between native iOS, React Native, and Unity, optimizing serialization for low-latency interactions. Developed an iOS SDK for Unity games in Swift and Objective-C with OAuth SSO login and payment processing, and improved MPL crash-free reliability to 99.5%+ using Crashlytics.

C React Native Unity Swift Objective C Serialization OAuth Payments IOS SDK

Lead iOS Engineer

GALE Creative Agency

Oct 2020 - Mar 2022 (1 year 5 months)

Joined as the first iOS engineer at GALE India, built an Apple #1 Top Charts Health & Fitness app (June 2021), and secured App Store featured placement in Canada. Improved ratings from 3.1 to 4.6 in 8 months via performance optimizations, feature updates, and accessibility improvements, including deep linking, dynamic links, Apple HealthKit integration, and CI/CD with MS AppCenter.

Swift iOS App Store Optimization (ASO)Deep Linking Dynamic Links Apple Health App Accessibility Performance Optimization AppCenter CI CD

iOS SDE 2

Paytm Insider

Feb 2020 - Oct 2020 (8 months)

Developed the Paytm Chat & Money Transfer iOS SDK from scratch using CocoaPods, enabling P2P transactions, merchant payments, and real-time messaging. Implemented read receipts with notification service extensions and automated quick replies, and improved security using hashing to mitigate MITM attacks and sensitive data leaks.

Cocoapods IOS SDK Notification Service Extensions Quick Replies MITM Protection

iOS SDE 2

MediBuddy

Oct 2018 - Feb 2020 (1 year 4 months)

Rebuilt MediBuddy’s cashless healthcare app from Objective-C to Swift for 1.8M+ users and improved the App Store rating to 4.5+. Drove UI/UX revamps, app publishing, and ongoing feature enhancements over 1.5 years.

Swift Objective C iOS app development UI UX Revamp App Stores Publishing Enhancements Cashless Healthcare App

Software Development Engineer (iOS)

TEKsystems Global Services

Jan 2016 - Aug 2017 (1 year 7 months)

Shipped 5+ enterprise-grade iOS apps in an Agile environment using Swift, Objective-C, and Xcode with MVVM and protocol-oriented programming. Built a cross-platform desktop app for macOS using Electron.js, Node.js, and JavaScript, and created Excel parsing with D3.js data visualizations for analytics.

Swift Objective C XCode MVVM Agile Electron JavaScript D3.Js