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x0ptr/README.md

Lars Feldeisen

Software engineer & solution architect | Backend systems, APIs, and platforms

I have 15 years of experience across system engineering, software development, and architecture. Today I work hands-on with Go, Linux, and Kubernetes, building backend services and connecting systems that need to work reliably together.

My background also includes full-stack product development, identity and authentication, and the practical work of improving performance and maintainability in production systems.

What I work on

  • Backend & APIs: Go services, HTTP APIs, and clear interfaces between systems.
  • Integrations & identity: data flows across existing platforms, OpenID Connect, and authentication modernization.
  • Platforms & reliability: Kubernetes, Docker, automation, troubleshooting, and performance.
  • Product engineering: web applications and features built with JavaScript/TypeScript, React, and PHP/Symfony.

I enjoy working across these boundaries: understanding the problem, choosing a simple design, writing the code, and helping teams operate and improve what they ship.

Programming languages

Go JavaScript TypeScript PHP Erlang Rust

Connect

LinkedIn

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  1. gitrot gitrot Public

    Go 2

  2. beamgate beamgate Public

    Erlang 2