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Niklas Menzel-Sandic
Senior Fullstack Software Engineer
I build fast, observable, accessible software systems.
Senior Fullstack Software Engineer focused on TypeScript, React, Node.js, cloud delivery, observability, accessibility, and developer tooling.
About me
Hi, I'm Niklas.
I'm a Senior Software Engineer with 6+ years of experience building production-grade web applications, TypeScript and Node.js services, and developer-facing systems.
My work spans React, Next.js, Vue, REST and GraphQL APIs, CI/CD, observability, Core Web Vitals, accessibility-critical user journeys, and maintainable frontend architecture.
I like turning complex product requirements into reliable systems, improving performance and quality, and raising engineering standards through documentation, code reviews, reusable components, and pragmatic technical leadership.
Recently, I have also been focused on AI-assisted engineering workflows, MCP and context-engineering patterns, repository-aware automation, prompt-injection awareness, and human-in-the-loop safeguards.
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Good software should not only work. It should create leverage for other people.
I build product interfaces, backend services, tracking systems, and developer-facing workflows that stay understandable under pressure.
I care about accessible implementation details: semantic HTML, ARIA, focus management, keyboard navigation, WCAG-oriented delivery, and practical axe-core remediation workflows.
My strongest environments are remote-friendly teams that value clear architecture trade-offs, measurable product impact, production diagnostics, code quality, and async collaboration.