Medformatik
Florian Rachmann.
Software developer from Germany, studying computer science at RWTH Aachen — working across mobile, web, open infrastructure, and emergency medical services.
I like building practical software with real-world value — in emergency medicine, sailing analytics, self-hosted infrastructure, and open map data. Away from the keyboard, I'm usually on an ambulance, on a boat, or exploring and mapping places around the world.
Work
Selected projects that reflect what I care about in software: usefulness, thoughtful design, and real-world context.
Hover, tap, or focus a row for details
- 2024—
KiNA
App development, UI/UX - 2020—
Trimlog
Co-founder, full-stack developer - 2022—
Intensive Care Dashboard Germany
Sole developer - 2024—
CrossDrop
Sole developer - 2021—
AdGuard Home Client
Sole developer
About — a path
An overview of experiences that shape how I think about software: computer science studies, emergency medical services, my own projects, and real-world contexts.

- 2004
Born
Germany - 2014–22
Amplonius-Gymnasium
RheinbergAbitur, several years in the school's emergency first-aid service, and maths and English competitions along the way.
- 2019–20
Exchange year, Cairns State High School
Cairns, AustraliaNine months of high school in Australia: everyday English, new creative and hands-on subjects, and a clear step toward more independence.
- 2020
Co-founded Trimlog
Started Trimlog while still in school: a performance sailing app for regatta sailors, with website, app, and backend development, business planning, customer contact, and a 3rd place at STARTUP TEENS 2021.
- 2022–23
FSJ, qualified as Rettungssanitäter
DRK NeussVoluntary social year with DRK Neuss: qualified as a Rettungssanitäter, worked eight months on patient transport ambulances, and obtained the C1/C1E driving licences.
- 2023
Computer Science at RWTH Aachen
Studying computer science with a focus on practical software systems and real-world applications, with medicine as one of several areas of interest.
- 2023
Working student on the RTW
Regular shifts on the emergency ambulance, parallel to studies.
- 2024
KiNA
Paediatric emergency app enters development in close collaboration with emergency medicine professionals.
Stack
A practical stack shaped by the projects I build: mobile apps, web tools, self-hosted infrastructure, and open data.
Languages
Dart TypeScript JavaScript Python Java C / C++ PHP Bash
Frameworks
Flutter React Next.js Node.js Tailwind CSS
Tools & infrastructure
Docker Linux Git OpenStreetMap Self-hosting
Contact
The easiest way to reach me is the form below — or email. I read Mastodon and Matrix DMs too, and I'll reply in English or German — your call.
Send a message
Elsewhere
- GitHub
- Medformatik
- florianrachmann
- Keyoxide
- Verified identity
- Mastodon
- @florian@fwcr.de
- Bluesky
- fwcr.de
- Lemmy
- florianr
- Pixelfed
- florianr
- Matrix
- @florian:fwcr.de
- OpenStreetMap
- Medformatik
- Stack Overflow
- Medformatik
- ORCID
- 0009-0007-2729-0318
- medformatik