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Tech lead in FE technologies with 14+ years of experience architecting and delivering high-performance mobile and web applications. Expertise in Swift, ReactNative and Flutter, with working knowledge of web technologies including HTML, CSS, JavaScript, TypeScript, and frameworks like React and Angular. Proven track record of optimizing app performance, leading large-scale projects, and improving user engagement. Successfully reduced app crashes to 0% and increased feature adoption by 45%. Passionate about building scalable solutions and mentoring teams to achieve technical excellence.…Tech lead in FE technologies with 14+ years of experience architecting and delivering high-performance mobile and web applications. Expertise in Swift, ReactNative and Flutter, with working knowledge of web technologies including HTML, CSS, JavaScript, TypeScript, and frameworks like React and Angular. Proven track record of optimizing app performance, leading large-scale projects, and improving user engagement. Successfully reduced app crashes to 0% and increased feature adoption by 45%. Passionate about building scalable solutions and mentoring teams to achieve technical excellence.

Rajneesh Kumar

Front-End Developer, Web Developer, App Developer

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Tech lead in FE technologies with 14+ years of experience architecting and delivering high-performance mobile and web applications. Expertise in Swift, ReactNative and Flutter, with working knowledge of web technologies including HTML, CSS, JavaScript, TypeScript, and frameworks like React and Angular. Proven track record of optimizing app performance, leading large-scale projects, and improving user engagement. Successfully reduced app crashes to 0% and increased feature adoption by 45%. Passionate about building scalable solutions and mentoring teams to achieve technical excellence.…Tech lead in FE technologies with 14+ years of experience architecting and delivering high-performance mobile and web applications. Expertise in Swift, ReactNative and Flutter, with working knowledge of web technologies including HTML, CSS, JavaScript, TypeScript, and frameworks like React and Angular. Proven track record of optimizing app performance, leading large-scale projects, and improving user engagement. Successfully reduced app crashes to 0% and increased feature adoption by 45%. Passionate about building scalable solutions and mentoring teams to achieve technical excellence.

Available to hire

Tech lead in FE technologies with 14+ years of experience architecting and delivering high-performance mobile and web applications. Expertise in Swift, ReactNative and Flutter, with working knowledge of web technologies including HTML, CSS, JavaScript, TypeScript, and frameworks like React and Angular. Proven track record of optimizing app performance, leading large-scale projects, and improving user engagement. Successfully reduced app crashes to 0% and increased feature adoption by 45%. Passionate about building scalable solutions and mentoring teams to achieve technical excellence.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Hindi

Advanced

Work Experience

Senior iOS Engineer at SpearHead Technology (Client MoneyGram)

March 1, 2024 - November 30, 2025

Led feature development for non-custodial digital wallet payments, improved test coverage, and managed build/release cycles at squad level. Contributed to GoPay/GoJek related product work and internal tooling to streamline financial workflows and release processes. Drove adoption of Flutter-based features and supported GoPay Later initiatives, coordinating with cross-functional teams to ensure timely delivery and quality.

Senior iOS Engineer at GoFin Labs India Pvt. Ltd (GoTo Financial)

August 1, 2020 - June 30, 2023

Led feature development across Swift, Flutter, and ReactJS stacks. Contributed to the GoPay Later product, enhanced the Flutter-based GoPay Flutter module, and improved the GoPay-related dashboards and internal tooling. Mentored junior developers, coordinated feature releases, and assisted with onboarding and process improvements.

Senior Software Engineer / Senior Developer at ISYX Technology – Doha, Qatar (Remote)

August 1, 2019 - February 1, 2020

Stacked on Swift, Kotlin, and Android development. Led Android development efforts, implemented a barcode scanning mechanism, and supported Arabic-language deployment without device reformatting. Delivered real-time live score functionality and contributed to cross-platform solutions.

Tech Lead / Assistant Manager at KiwiTech India Pvt. Ltd, Noida, India

July 18, 2011 - August 14, 2019

Led two projects (Hylofit and Pay Ball). Managed design, architecture, and coding of the mobile platform, and led a team of around 10 developers. Acted as a primary client contact for related products, translated design concepts into iOS deliverables, and guided junior developers on Swift and React Native. Coordinated feature planning, release scheduling, and documentation; contributed ideas for innovative solutions and on-boarding processes.