I'm Justin, a 21-year-old Computer Science student and Tutor at the Technical University of Munich (TUM). I love building dependable systems end-to-end, from SwiftUI frontends and TypeScript dashboards to Python/FastAPI services, Dockerized backends, and AWS serverless pipelines. I also care a lot about operating systems, networks, LLMs, and clean, accessible UI.
- 🔭 Currently working on: RadioAtlas (iOS), automation & internal tools as a Working Student at Westend61 (SysAdmin + Software Dev), a stealth startup, and my portfolio.
- 🌱 Currently learning: iOS 26 / SwiftUI, distributed systems & OS internals, AWS serverless and Machine Learning.
- 👯 Looking to collaborate on: LLM-powered apps, SwiftUI Apps, Next.js + edge/serverless projects.
- 💬 Ask me about: Python/FastAPI, Next.js/TypeScript, Docker & networking, prompting/LLM stacks.
- 🎓 Teaching: Tutor for Operating Systems & System Software (Oct 2025 – Mar 2026). Previously Fundamentals of Programming (Oct 2024 – Mar 2025).
- 🏅 Highlights: CHECK24 GenDev stipend • Top 8% at TUM • 2nd place — TUM.ai × Public Makers Hackathon.
- 📫 How to reach me:Email Me
- Teaching & Mentoring: Weekly tutorials, exam prep, and a 100+ member peer study community at TUM.
- Presentation: Story-driven talks and demos; comfort speaking to groups of 30+.
- Communication: Explain complex tech to mixed audiences with clarity and empathy.
- Entrepreneurship: Launched my first business at 18; rapid prototyping & user-feedback mindset.
- Systems Thinking: From OS/networking to APIs and UIs, design for coherence and reliability.
- Where the Community Comes Home: Two Days With Six Years of TUM.ai
- Build the Most Absurd Thing: An Onboarding Hackathon with a Squabbling AI Council
- Making NeatPass: From an Annoying PDF Ticket to an App
- Third at the EuroTech Hong Kong Hackathon: A Wafer Defect Detector in 24 Hours
- XCStringsTranslator: AI-Translating Apple .xcstrings Files
- Website:Lanfermann.DEV
- Email:Justin@Lanfermann.DEV
- LinkedIn:Justin Lanfermann
- Ko-Fi:Buy me a coffee
Made with ❤️ by Justin Lanfermann