kedar27

Upstox: Demat, Stock, MF, IPO App is a trading platform used by over 20 million Indians. Led the complete rewrite of the critical Order Entry flow from UIKit to SwiftUI, improving UI render performance by 40% and consolidating order-execution state management across a 20M+ user platform. Built a high-throughput Tick-By-Tick (TBT) market-data pipeline using WebSockets and Swift Concurrency, cutting order-book latency by 45% under peak-volatility load. Refactored legacy monolithic modules into a modular SPM architecture, decoupling execution workflows and reducing clean build times by 20%. Partnered with product design to adopt Figma Code Connect and modular design tokens, accelerating UI component delivery by 30% across cross-functional streams. Embedded AI-assisted development (Cursor IDE, Claude Code) into team engineering workflow through context-aware agentic prompts and automated refactoring.

Koo was the world’s 2nd largest multi-lingual microblogging platform. Led the transformation of an existing app into SwiftUI, significantly improving its performance and user experience. Leveraged Modular Architecture pattern using SPM for enhanced scalability and code reusability.

Paytm: Secure UPI Payments App is a payments app trusted by over 500 million Indians. Engineered the iOS migration of Paytm’s UPI stack to the TPAP multi-bank model, re-routing live payment traffic across 3 partner banks for 500M+ users with zero customer-facing downtime through the regulatory cutover. Shipped Wallet UPI and streamlined UPI Onboarding, extending payment coverage to 20% additional bank/wallet partners and lifting onboarding completion by 10%. Used Crashlytics to triage production crashes in the payments module, raising crash-free users from 98.7% to 99.2%, Also improved the iOS unit-testing standard for the payments module using XCTest, raising code-coverage and stability.

MarketWolf: Stocks & Options App is a retail derivatives trading platform. Engineered MarketWolf’s stocks and options trading application for 10M+ users, building the SwiftUI and Combine feature layer from the ground up. Architected the real-time options-chain and order-book data pipeline over WebSockets and REST.

VAMS App authenticates visitors, maintains identity records, sends emergency alerts, and tracks walk-ins and appointments in real time. Led iOS development for VAMS, a visitor authentication and physical-security platform, owning App Store releases across 5+ countries. Implemented device-integrity verification using Apple’s DeviceCheck API and raised re-engagement through Rich Push Notifications and deep linking.

Shipped 15+ production iOS applications across fintech, media, and commerce using AVFoundation, Core Data, and Stripe. Built and maintained an internal Swift utility library adopted across 10 client projects, cutting per-project setup time by 20%.