Sumit Gupta

Frontend Engineer

Bengaluru, Karnataka, India12 yrs 10 mos experience

Highly Stable

Key Highlights

Led team to improve payment success rates significantly.
Architected scalable solutions for high-performance applications.
Pioneered frontend infrastructure initiatives enhancing developer experience.

Stackforce AI infers this person is a Fintech and SaaS expert with strong frontend engineering capabilities.

Contact

Skills

Core Skills

Frontend EngineeringWeb DevelopmentPerformance OptimizationGraphqlInformation Security

Other Skills

CI/CDComputer EngineeringComputer Network OperationsJavaScriptMachine LearningMySQLNetworking ProtocolNetworking SoftwareNode.jsProgrammingProgressive Web ApplicationsReact.jsReduxTestingYUI

About

Principal Frontend Engineer at Razorpay. Driven by a passion for frontend engineering and product excellence. I specialize in building scalable, high-performance web applications, leading architecture initiatives, and spearheading design system adoption across teams. Obsessed with clean code, modern UI, accessibility, and driving measurable performance gains. Always pushing for seamless user experiences and empowering engineering teams to deliver at their best.

Experience

12 yrs 10 mos

Total Experience

2 yrs 6 mos

Average Tenure

Current Experience

Razorpay

3 roles

Principal Frontend Engineer 1

Promoted

Nov 2023 – Jun 2025 · 1 yr 7 mos

Led a team of 14 developers to revamp Turbo UPI, improving payment success rate from 63% to 75% and reducing onboarding time from 15 minutes to 3 minutes.
Led merchant integration and go-live for key clients including Zomato, Ola, Meesho, and Policy Bazar, reducing their integration time from months to weeks.
Designed a novel, unified UPI SDK supporting multiple variants (e.g., Turbo, TPAP), cutting integration time from weeks to days, improving stability, accelerating feature launches, and reducing time-to-market across frameworks.

JavaScriptNode.jsReact.jsWeb DevelopmentFrontend Engineering

Staff Frontend Engineer

Apr 2021 – Dec 2023 · 2 yrs 8 mos

Improved PG p95 performance from 4.7s to 3.8s.
Conceived, established, and led the Frontend Infra Pod.
Components standardization across RazorpayX thereby improving developer happiness. Made performance a first class citizen.
Initiated and architected the adoption of module federation at RazorpayX.
Driving adoption of Playwright tool for E2E test cases.
Migrated to RTL(React testing library) and increased unit test coverage from 10%-80%.

JavaScriptReact.jsPerformance OptimizationTestingFrontend Engineering

Lead Frontend Engineer

Apr 2020 – Apr 2021 · 1 yr

Architected and delivered the X Mobile App
Led technical planning, code reviews, CI/CD.
Ensured timely, high-quality releases with high unit test and functional tests coverage.
Core GraphQL contributor: Designed and shipped all X-specific GraphQL types, owned schema/domain quality, and enabled rapid backend/frontend integration.
Established a strong developer productivity culture: Drove adoption of github actions and spinnaker. Improved build process by migrating to the latest version of webpack.

GraphQLCI/CDReact.jsTestingFrontend Engineering

Myntra

Senior Frontend Developer

Sep 2019 – Apr 2020 · 7 mos

Treebo hotels

2 roles

Senior Frontend Engineer

Promoted

Jan 2018 – Sep 2019 · 1 yr 8 mos

● Advocated TBD(Trunk Based Development) for frontend. Followed a process of doing small small iterative releases on Frontend using toggle flags.
● Built a dashboard using GraphQL, apollo-client, react.js for internal purpose. Designed scalable schema's on GraphQL by understanding the domain and keeping the schema's as close to the domain as possible.
● Architected and built CI/CD pipelines for both mobile and desktop platforms across different environments helping developers in one click easy deployments.
● Took a workshop at react meetup, discussing about react middlewares and how it can be leveraged to cancel redux actions.
● Authored a blog post discussing redux middleware and how to leverage it for cancelling redux actions.

GraphQLReact.jsCI/CDFrontend Engineering

Frontend Engineer

Dec 2016 – Jan 2018 · 1 yr 1 mo

● Built a lightweight and highly performant Progressive Web Application for Treebo, which had a TTFP (Time To First Paint) of 800 ms on a standard slow mobile network. It got featured at Google I/O 17' (Preact, React, Redux, Webpack and Node.js).
● Successfully developed and shipped a number of feature across mobile and desktop platforms.

React.jsProgressive Web ApplicationsFrontend Engineering

Gwynnie bee

Front End Developer

Jul 2014 – Dec 2016 · 2 yrs 5 mos · New Delhi Area, India

Front end developer @ Gwynniebee. Is a javascript enthusiast and is always eager to learn new frameworks and languages.
Key Skills : Javascript, YUI, jQuery, Mojito, node.js, Design Patterns in JS.

JavaScriptYUIjQueryFrontend Engineering

Punjab engineering college

Master of Engineering, Information Security

Jul 2012 – Jun 2014 · 1 yr 11 mos

Master's in Information Security :
Developed system capable enough to identify and stop phishing attacks in Real-Time. A set of 12 unique features were identified. A Decision based machine learning technique was used to generate a decision tree using 12 identified features. The decision tree so generated was used to identify phishing webistes.

Information SecurityMachine Learning