Heyrbiar Khan

I’m a frontend engineer with 3+ years shipping production features for UK-based remote clients across fintech and healthtech. I’m deep in React, Next.js, TypeScript, and GraphQL, with a growing focus on 3D UI, real-time data, and AI-integrated products.

In my current role at Matriks LTD, I delivered 10+ complex features for the Simplicity investment platform using Next.js, React, TypeScript, Tailwind CSS, and shadcn/ui—reducing reported UI bugs by ~30% through input sanitisation and typed data contracts. I also rebuilt legacy components for full WCAG 2.1 accessibility, keyboard navigation, and robust loading/error states, cutting accessibility audit failures from 14 to 2.

Beyond UI delivery, I’ve owned end-to-end data and reliability work: I architected a GraphQL data layer powering 5 live dashboards with structured caching, reducing average query time by ~40%. I integrated Azure AD B2C / MSAL authentication and centralised error handling via Axios interceptors, eliminating a class of silent auth failures.

Before that, at Mindsum, I helped take a mental-health therapist marketplace from early stage to production—shipping SEO-focused SSR and contributing to a 3× increase in organic search traffic. I’ve also built reusable component systems and real-time experiences (including timezone-safe scheduling and headless CMS “load more” hubs), and I bring that same craftsmanship to projects like Radia’s real-time 3D DDoS threat visualiser.