Siddharth Deshpande

I’m a frontend engineer with 5 years shipping and owning production web applications in React, TypeScript, and Next.js, with a particular strength in performance profiling, debugging, and deep optimization. I’m used to being the go-to person who can take a feature from unclear requirements to stable, measurable outcomes.

At a NASDAQ-listed SaaS company (Airbase / acquired by Paylocity), I was the sole frontend owner of major initiatives, including rebuilding a core accounting workflow used by thousands of customers with 82% adoption. I diagnosed a cross-customer performance bottleneck through profiling—cutting search latency 98% (1.7s to 0.03s) and modal load time 70% (2s to 0.6s) in a single PR—while resolving simultaneous production escalations across enterprise customers.

I’ve also driven systemic improvements like the Tag Optimization initiative to address frontend crashes from eager loading (50,000+ tags), becoming a top code contributor across 4+ squads. Alongside shipping complete onboarding flows and robust UX safeguards, I helped modernize the codebase by removing 28+ stale LaunchDarkly flags, migrating modules to TypeScript, and authoring coverage-tracking scripts; I’m also committed to design-systems work through my open-source PowUI component library at powui.dev.