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johan-steffens/README.md

👋 Hi, I’m Johan Steffens

Staff Engineer, Problem‑Solver & Continuous Learner

LinkedIn 🇿🇦 South Africa Docker Visitors

“Challenging problems fuel my curiosity; elegant, resilient systems are the outcome.”

I’ve spent the last decade architecting and building cloud‑native platforms across banking, fin‑tech, and marketing tech.
Currently I'm a member of the Staff Engineering forum at Capitec Bank (🇿🇦), where I design, build, and release high‑throughput systems from concept to production.


🔭 Current Focus

  • Rust‑powered edge & HTTP proxy (→ foxy)
  • Fine-grained authorisation in high-performance, mission-critical systems
  • Streaming telemetry & observability with OpenTelemetry, Instana, Grafana Cloud
  • Secure, policy‑driven microservices on Kubernetes
  • Automating infrastructure with Terraform & GitHub Actions

💡 Technical Interests

Domain Topics that keep me up at night
Platform Engineering Distributed tracing • Zero‑copy streaming • Service discovery
Networking QUIC / HTTP‑3 • AWS VPC • Kubernetes ingress management • Gateway architecture
Data Kafka • Event sourcing • Stream processing • Change‑data‑capture
Security ReBAC • Policy‑as‑code • OIDC / OAuth2 • mTLS everywhere
Architecture Domain-driven design • Microservices • Serverless tooling

🛠️ Languages & Tooling

📈 GitHub Analytics

GitHub stats Top Langs

GitHub Streak

✍️ Recent Activity

  • Working on a minimal, Rust-powered, configuration-driven HTTP proxy (→ foxy)
  • Contributing to the Spring Boot ecosystem — experimenting with HTTP/3 support.
  • Prototyping policy management DSL for runtime‑tunable route security.

🤝 Let’s Connect

  • Buy me a coffee
  • Check out my experience on LinkedIn
  • Book some time with me on TidyCal
  • Or open an issue / discussion on any repo – I’m always keen to collaborate!

Powered by coffee ☕, braai 🔥, and flipping meat only once.

Pinned Loading

  1. foxy foxy Public

    A minimal, configuration-driven, hyper-extensible HTTP proxy library written in Rust.

    Rust 5

  2. goals-android goals-android Public

    An Android app that allows you to keep track of life aspects that you want to work on, and create challenges against those aspects to develop them.

    Java

  3. humaning-unity humaning-unity Public

    A fishing game where you catch humans! Made for Weekly Game Jam #93

    C#

  4. kindergarten-cooking-unity kindergarten-cooking-unity Public

    A uh... cooking game? Made for Weekly Game Jam #95

    C# 2 3