Rewrote Express.js backend on Flow to NestJS with Typescript. Adopted TDD with unit/E2E testing using Jest. Worked with PostgreSQL, Redis, RabbitMQ. Set up CI/CD pipelines, managed private NPM modules. Managed infrastructure deployment with Ansible and Docker Swarm. Had lots of fun implementing custom-built activity feed solution with CockroachDB.On the frontend developed complex SPAs and landing pages with React using Next.js. Used codegen tools for frontend services. Loved writing Figma plugin for visual asset management and art template editor with Konva.js.

Maintain and develop Chrome extension. Refactored the whole project from JS to TS. Improved DX by changing the build workflow. Added E2E tests with Playwright and CI/CD support. Migrated the extension to Manifest V3.

Developed backend for a dating app from scratch with Node.js (NestJS). Supported OpenAPI schema for mobile developers. Worked with MySQL and Elasticsearch. Used Clickhouse for analytics. Built and managed infrastructure in GCP (Docker, App Engine). Worked with Firebase, IAP, push notifications, and deep linking. Wrote analytics and admin frontends using React/Redux.

Participated in various frontend and backend projects mostly revolving around Chrome extensions. Improved my skills in code bundling, CSS modules, cross-browser layout, Web APIs and Typescript. Used Node.js with MongoDB for backend services.Developed expertise in web automation and scripting with tools like Puppeteer for browser control.