Open to opportunities

Harsh Jaiswal

@harshjaiswal1

Message

Senior React Native developer delivering performant cross-platform mobile and web applications.

India

Message

What I'm looking for

I seek roles building high-impact cross-platform mobile products where I can lead engineering, improve performance, mentor teams, and drive product outcomes.

I am a Senior Software Developer specializing in React Native, ReactJS, TypeScript and full-stack mobile solutions, with a proven record of shipping enterprise-grade applications across finance, retail, and consulting. I drive performance improvements, streamline developer workflows, and lead cross-functional teams to deliver measurable business impact, such as digitizing retail operations across 100+ stores and reducing render cycles by 25%.

I mentor distributed engineering teams, create reusable libraries and tooling (including an open-source NPM package), and collaborate with product and business stakeholders to define KPIs and optimize user experiences. I continuously modernize codebases—migrating to TypeScript, introducing Redux and WebSocket optimizations—to improve reliability, scalability, and developer productivity.

Experience

Work history, roles, and key accomplishments

Current

Lead React Native Developer

Current

Ace Turtle Pvt. Ltd.

Sep 2024 - Present (1 year 3 months)

Redesigned and deployed enterprise Android & iOS retail apps, digitizing store operations and improving employee adoption by 40%; refactored core components to reduce render times by 25% and standardized UI to cut feature implementation time by ~30%.

React Native Redux TypeScript Firebase MongoDB OneSignal Google Analytics Performance Optimization

Senior Software Developer

Luna Securities Pvt. Ltd.

Mar 2022 - Aug 2024 (2 years 5 months)

Modernized stock trading mobile apps for the Philippines market, migrating codebase to TypeScript reducing bugs by 35% and introducing state management to improve responsiveness by 20%; fixed critical pricing refresh lag reducing missed UI updates by 90%.

React Native TypeScript Redux React Native Reanimated Flask Performance Tuning

Software Developer

Hiteshi Infotech Pvt. Ltd.

Dec 2020 - Mar 2022 (1 year 3 months)

Delivered Android and iOS applications across finance and retail, reducing project delivery time by 15% via reusable component libraries and improving bug turnaround by 20% through sustained production support and code reviews.