Tarun Singh

I’m a frontend tech lead with 5+ years shipping real-time, AI-native web products. I focus on agentic UX, streaming LLM interfaces, and architecture that scales—while keeping quality and developer experience non-negotiable.

At TestMu AI (formerly LambdaTest), I’ve been the first frontend engineer—now the frontend lead—of KaneAI, a GenAI-native end-to-end testing agent. I led frontend development from zero to $4M+ ARR and 180+ enterprise customers, and partnered closely with product and design to ship the authoring and live execution experience.

I authored .evidence, an open specification for verifiable AI-agent test runs, and helped build the toolchain around it (kane-cli, reference workflows, signing/CI export). I also drove major UX and performance wins—token-level LLM streaming over SSE, live WebRTC streaming, and geo-aware STUN selection that cut median session connect time by ~40%.

Before KaneAI, I was a core frontend engineer on LambdaTest’s cross-browser testing platform, including real-time manual testing experiences using WebRTC/WebSockets. I also built SSEye, a Chrome DevTools extension for SSE debugging, reflecting my ongoing drive to make complex real-time systems observable and easy to debug.