Sagar Jain
Lead Frontend Engineer at Rapidflare
Bengaluru, Karnataka, India
Summary
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Rockstar🎓
Top SchoolSagar Jain is a Lead Frontend Engineer based in Bengaluru with around a decade of hands-on experience building scalable web and mobile products using React, TypeScript, Next.js and Node.js. He has led engineering teams to deliver low-code builders, CRM and e-commerce platforms, reusable React Native white-label apps, and real-time event experiences while establishing CI/CD and observability for production reliability. At QuickSell and GEVME he shipped customer-facing builders and dashboards that reduced crashes and technical debt, and at Zomentum and ZestMoney he drove migrations to TypeScript and modern stacks that measurably improved stability and conversions. An active open-source contributor, he has authored and fixed TypeScript definitions in the high-profile DefinitelyTyped repo for several passport and UI libraries, demonstrating attention to developer ergonomics beyond product work. Known for pragmatic trade-offs, he pairs product-focused engineering with infrastructure wins (like meaningful AWS cost optimizations) to deliver measurable business impact.
8 years of coding experience
8 years of employment as a software developer
Bachelor's Degree Information Technology, Bachelor's Degree Information Technology at Bhartiya Vidya Bhavans Sardar Patel Institute of Technology Munshi Nagar Andheri MumbaiHigh School Diploma, High School Diploma at Smt. Sulochanadevi Singhania School
English, Hindi, Marathi, English, Hindi
Stackoverflow
93reputation
49kreached
2answers
1question
Github Skills (17)
typesc10
build-definition10
typescript10
typescript-definitions10
type-definition10
type-system10
dictionary10
typescript-types10
typescripts10
google-tag-manager6
optimization6
pagespeed6
css6
gcloud6
partytown6
Programming languages (4)
Github contributions (5)
DefinitelyTyped/DefinitelyTyped
Apr 2020 - Jun 2020
The repository for high quality TypeScript type definitions.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:8 commits, 10 PRs, 12 comments in 2 months
Contributions summary:Sagar primarily contributed to the type definitions within the `definitelytyped/definitelytyped` repository, focusing on the `passport-instagram` package. They implemented new type definitions, updated existing ones based on source documentation, and addressed missing options in strategy interfaces for `passport-twitter`, `passport-facebook`, and `emoji-mart`. Furthermore, the user fixed handler parameters in `react-color` and created new type definitions for `passport-instagram-token` and `passport-instagram-graph` packages.
typescript-definitionstype-definitionshigh-qualitydtsdefinitions
sagar7993/gatsby-plugin-pinterest-twitter-facebook
Sep 2019 - May 2020
Contributions:4 releases, 5 commits, 33 pushes in 8 months
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