Resume

Alexander von Stuelpnagel

Senior frontend platform engineer. I build React and TypeScript systems for regulated, high-scale environments, with a focus on the contracts, deploy safety, and observability that make a frontend safe to change.

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Selected highlights

  • Broke a five-team React monolith into federated micro-frontends so teams could ship independently, using shared React, Router, and design-system singleton contracts to keep the composed app coherent at runtime.
  • Built regulated multi-step React/TypeScript flows on TanStack Query, React Hook Form, and Zod, behind six layers of testing (unit, component, E2E, mutation, contract, service-virtualized integration) feeding staged release gates.
  • Worked the seam between frontend and delivery: OpenTelemetry-aware surfaces, blue-green deploys via Jenkins and Spinnaker, and promotion gates from commit to production.
  • Run my own Proxmox/Cloudflare/Caddy infrastructure end to end. This site is statically built and deployed to it with a dry-run-first, archive-before-replace deploy.

Core technologies

React 18, TypeScript, Webpack Module Federation, TanStack Query, React Hook Form, Zod. Testing with Jest, Playwright, mutation testing, and contract testing. Delivery with Jenkins, Spinnaker, and OpenTelemetry. Infrastructure with Proxmox, Caddy, and Cloudflare.