01 About

Stefan Ruzitschka

Senior DevOps Engineer · Berlin, Germany

Senior Software & DevOps Engineer with 15+ years of experience shipping end-to-end. Specializing in high-reliability systems, platform engineering, and monolith-to-microservices migrations.

02 Stack

01
Languages

Rust, TypeScript, Kotlin, Java, Go

02
Frameworks

Astro, Ktor

03
Tools

Cloudflare Workers, Kubernetes, PostgreSQL, OpenTofu, Bitwarden, AWS

03 Calendar

My weekly open-source schedule — what I work on and when.

Mon intar.dev
Tue intar.dev
Wed Rawkode Academy
Thu Rawkode Academy
Fri Waddle
Sat Off
Sun Off

04 Projects

Things I build and maintain.

01
intar.dev

Hands-on DevOps training platform — real scenarios, real VMs, real skills.
02
Advent of AI Security

Interactive advent calendar exploring OWASP LLM security risks.
03
fbtoggl

Toggl Track from your terminal — manage timers, entries, and reports without leaving the CLI.
04
temps

Human-readable time expressions, parsed and understood by Rust.
05
cidrrr

IPv4 and IPv6 CIDR block inspection made easy — expand, list, and explore IP ranges.

05 Social

Where to find me online.

Bluesky @icepuma.dev GitHub @icepuma X @icepuma LinkedIn stefan-ruzitschka