I'm Tobias Boehm, a freelance senior app developer based in Bad Bramstedt in northern Germany.
For more than twelve years I've built mobile apps. I've contributed to some you'll know: komoot with over ten million downloads, the electronic health record (ePA) at IBM, the RTL+ streaming app, and the Immowelt real-estate app.
I've also brought my own products to market, like the AI app MNDXT, where the app and backend come from a single source. That's exactly the experience I now offer small and medium-sized businesses in the north.
After many years on large teams, I deliberately went freelance. For me it's about independence and the freedom to build things properly, instead of following corporate mandates. On top of that, I'd rather work on several different projects in a short time than spend years on a single feature.
Today I deliberately work for small and medium-sized businesses. This is where I solve real problems that genuinely hurt day to day. I talk directly with the people who decide, and I take a project from the first idea to the finished app, instead of being just a cog in the machine.
This is home. My family and I have bought a house here and we're staying for the long run. For you, that means we meet in person and coordinate over short distances. Your app isn't built by an anonymous offshore team, but here with me, on the ground.
You work directly with the developer who builds your app, not with a hotline or a constantly changing team. You get senior quality from Germany, short paths, and one fixed point of contact, from the first conversation to launch.
Over twelve years of app development, from corporate apps for millions of users to my own product.
Maintaining and extending the Android white-label solution for the electronic health record (ePA v3.0 and v3.0.5), a security-critical healthcare system. Kotlin Multiplatform and Jetpack Compose.
Architectural overhaul of the Tracemate app: introducing Clean Code and Clean Architecture, and improving existing development processes.
Modularizing the main app and introducing code-quality gates (Clean Architecture, ktlint, detekt). All new UI components in Jetpack Compose.
My own product: the AI content app “Mind Extension.” I built both the Android app and the backend myself, from Ktor and Google Cloud to integrating OpenAI and Stable Diffusion.
The RTL+ Music/MPA streaming app in a team of more than 250 people. My team owned the podcast area, in a heavily modularized project using SAFe.
Further development of the Immowelt search app. Highlight: a prototype for drawing and deleting search polygons on Google Maps.
Redesign of the AOK bonus app, including a new single-activity navigation concept for heavily modularized projects and certificate pinning for security.
Mentoring master's students in their practical project, a donation platform built on the Ethereum blockchain.
New features and maintenance for the leading outdoor navigation app in the DACH region, which today counts over ten million downloads. komoot has been fully remote since 2017.
Where it all began: from 2011 onward I built Android apps. The foundation was my degree in Media Informatics at HTW Berlin, completed as a Master's with a final grade of 1.4 (with distinction).
Wondering whether a custom app is worth it for your business? Then get in touch, no strings attached.
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