> Markdown version of [/@jan-mensch](https://www.wearedevelopers.com/@jan-mensch). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Jan Mensch Software developer at ClickHouse building databases and distributed systems. ## About Jan Mensch builds databases, distributed systems, and cloud infrastructure as a software developer at ClickHouse. His work involves networking and keeping cloud services stable under heavy loads. He tackles practical infrastructure challenges, like using eBPF for rate limiting at Layer 3 to prevent accidental stress tests from overwhelming reverse proxies. When he isn't working on databases, Jan spends his time windsurfing, cooking, and learning Spanish. ## Past Sessions ### World Congress 2026 Europe · July 8, 2026 Berlin, Germany - [Rate-limiting using eBPF and Istio: How to protect your SaaS customers from themselves](https://www.wearedevelopers.com/videos/100220-rate-limiting-using-ebpf-and-istio-how-to-protect-your-saas-customers-from-themselves) · 30 min · 🎥 Watch recording ## Videos - [Rate-limiting using eBPF and Istio: How to protect your SaaS customers from themselves](https://www.wearedevelopers.com/videos/100220-rate-limiting-using-ebpf-and-istio-how-to-protect-your-saas-customers-from-themselves) · Jan Mensch