Sushant Gangwar

I am a frontend engineer with 4+ years building scalable SaaS and high-performance web applications using React and Next.js. I focus on modular architecture, conversion-driven product engineering, and measurable performance gains.

At my current role I led frontend architecture for a multi-tenant AI SaaS dashboard and chat widget, improving engagement by 35% through rendering and Core Web Vitals optimizations. I also boosted organic and AI discovery by 50% with structured SEO and AEO strategies.

Previously I rebuilt marketing and product properties to deliver dramatic speed and SEO improvements — for example improving load speed 60% and SEO score from 45 to 95, cutting JS payloads in half, and raising Lighthouse performance across properties. I build reusable component systems to accelerate delivery and maintainability.

I prioritize observability and data-informed releases, having implemented Sentry and PostHog in production to reduce time-to-resolution and guide feature decisions. I bring pragmatic, outcomes-focused engineering to teams aiming to scale web performance and conversions.