Divjot Singh

Management:

• Lead a core UI platform team of four very talented developers
• Planned and delivered quarterly roadmaps with data-driven tasks and output
• Identified and worked around common problems faced in leading a team (consistent deliverables, team morale, measuring impact, breaking down long running issues, scoping tasks, asynchronous communication, ...).
• Consecutively won two "Lead without authority" knolskape leadering programmes

Individual Contributions:

• Reduced react-native codepush bundle size by 20% by optimizing image assets
• Improved app startup time by 75% (P90), thus improving conversions to 2nd page by 35%.
• Updated internal react-native+react-native-web framework to use functional components with specialized hooks.
• Built Year In Review screens for 2020 & 2021.
• Deployed a webview fallback for react-native screens for quicker resolution during outages.
• Drove improvements for developer experience initiatives by adding CI checks, pre-commit hooks and dev compiler optimizations.
• Refactored tightly coupled internal library into individual npm packages in a mono-repo.
• Used extensive A/B testing to drive higher (3.6 to 4.4) app store ratings using a strategically placed prompt.
• Revamped udaan's homepage with 60fps animations and better SEO.
• Collaborated to make find.udaan.com during 2nd wave of covid19 in India to facilitate in finding essential medicines.
• Worked supporting lazy loading of react-native+react-native-web screens.
• Worked on an internal framework for creating SSR based React apps (using webpack+node)
• Worked on adding systematic changes to allow Animated Skeleton Screens for faster perceived performance on React Native and Web App.
• Revamped Order Details Experience for React Native and Web.

• Lead the release of Timeline shareability on Swiggy Go.
• Lead the release of Swiggy Stores PWA.
• Lead the release of Swiggy Single Page Checkout for Food.
• Developed new PL driven UI for Swiggy Stores.
• Developed new Swiggy Genie.
• Developed a system for incorporating Origin Trials for our PWAs, starting with SMS Receiver API & Contacts API.
• Deprecated legacy systems and ported the same to modern services.
• Regularly worked with and maintained HAProxy configuration.

• Designed and developed multi-tenant payments module
• Designed and developed website generator (Gauntlet). 10+ dashboards.
• Designed and developed static site serving system for legal pages.
• Designed Hotstar-Pop integration and scaled codepath for 120k RPM.
• Moved codebase to a monorepo for improved developer experience.
• Developed automatic UA based asset serving system for smaller bundle sizes. (20%)
• Developed Restaurant Hygiene Pages for PWA and as webview for apps.
• Developed Everyday Offers Feature for mobile PWA.

• Awards: MVP (Oct 2018)

• Migrated to React 16 from version 15. 50% win for renderToString completion time.
• Migrated to NodeJS version 8 from version 6 gave another 50% win for above.
• Reduced asset size by roughly 20% using Brotli compression.
• Optimized PNGs, JPEGs, converted to SVGs wherever possible to reduce overall page size.
• Improved scroll performance of listing page by using will-change CSS rule, along with disabling pointer-events on scroll.

• Samsung Internet PC Extension Starting June 2016
  • Revamped the extension codebase by switching to modern JavaScript paradigms, UI overhaul and performance optimizations. Improved localization of strings and helped in rebranding for version 2.0.
  • Successfully shipped version 2.0 in March which received great response (chrome web store rating increased from 2.7 to 3.7 post launch).
  • Currently working on adding new features and improving sync performance.
  • Userbase increased from 8,000 to 60,000 monthly active users (~8x) within 4 months of 2.0 release.
• Gaana Web App Starting March 2017
  • Designed and developed the web application in ReactJS + Redux + Styled-Components (later replaced with Emotion for perf wins).
  • Challenges like performance on low end devices, inter-op between Tizen APIs and Web Platform were tackled along with the team.
  • Successfully launched first phase of app within MyGalaxy on Tizen in Late May.
• Samsung Internet - Bixby April 2017 – July 2017
  • Wrote JSGF gram files for Samsung Internet domain. [video]
  • Helped in bringing accuracy to 95%+ for Bixby US launch.

• Employee of the Month (December 2016) Awarded as Employee of the Month for supporting and developing Samsung Internet PC Extension v2.0 in HQ.
• Samsung Citizen Award (March 2017) "Though a fresher and new to product development, [he] took up one of the key components of Samsung Internet browser, viz Samsung Internet Extension for Chrome and commercialized it flawlessly. All through the project, [he] has displayed enormous passion with a clear goal of making it much better."

• Developed an SPA using ReactJS, NodeJS and Postgresql

• Developed tile based map server using NodeJS, mapnik and TileMill
• Set up Mongodb cluster (3 systems), developed scripts to convert data from mongodb to CSVs and CSVs to JSON to-and-from a Hadoop cluster, and a web app to display results of the road anlaysis done by Hadoop.

• Health Report tool for analyzes all clients statistically and constantly check for API health status, hence benefiting in tracking downtimes and losses.
• Performance improvements by deploying faster routes to server calls. (300-400ms win)
• Expanding support to several e-commerce platforms.
• Extending help in creating the internal API. Made its use to make several customizable popouts, providing more options than industry.
• Integration with social networks to enable the tool. Studied Facebook documentation to leverage best out of its Graph API.
• Helped in strategy and planning of the tool in its initial phase.