Software Developer II · Hashedin By Deloitte
May 2022 — Present
React 18TypeScript 5Redux ToolkitReact QueryNode.jsGraphQLPostgreSQLRedisAWS ECS / S3 / LambdaGCP Cloud RunTerraformGitHub ActionsJenkinsDockerNew RelicLaunchDarkly
Frontend lead on business-critical products serving 50,000+ concurrent users. Own the full delivery chain: React 18 + TypeScript UI architecture, GraphQL API co-design, Node.js services, AWS/GCP deployment via Terraform, and CI/CD through GitHub Actions. Mentor 3–4 engineers through design reviews, performance deep-dives, and ADR-based decisions.
Frontend lead across the full delivery chain — component API to Terraform module.
Key Wins
- P95 GraphQL response time reduced by 40% via DataLoader batching, query complexity limits, and persisted query caching.
- Frontend build time cut from 14min → 3.5min: jest --shard across 4 workers + Docker BuildKit layer caching.
- Zero release-caused production incidents for 6 consecutive months after introducing LaunchDarkly feature flags and automated rollback triggers.
- 3 junior engineers reached independent feature ownership within 6 months through structured pairing and incremental scope.
See full portfolio: https://portfolio.kunal-gautam-570.workers.dev