I build mobile apps and the systems behind them.
Android & Product Engineer working with Kotlin and Compose Multiplatform on mobile, and TypeScript/Node.js, PostgreSQL and self-hosted infrastructure on the backend — from first idea to production.
Tech Stack
Tools only matter as long as the system stays understandable, robust and maintainable.
Projects
Mobile apps and web platforms I designed, built and run myself.
Solista
Store-aware shopping list for Android and iOS: every list follows the route you walk through each store. Local-first storage, optional encrypted shared lists via a self-hosted relay server.
endlichspanien.com
LiveContent and lead platform for German-speaking emigrants to Spain — conceived, built and operated end to end. Self-hosted on a VPS with Docker, Nginx and automated Forgejo Actions deployment, GDPR-compliant double opt-in and a password-protected admin panel.
Lumino
AndroidNight-light app for Android (iOS prepared): custom colors and presets, screen brightness control and a fullscreen clock.
Formous
SaaSWeb app that turns existing PDFs into fillable online forms: upload a PDF, place fields in a visual editor, share a link and collect submissions in a dashboard. Passwordless sign-in via email one-time codes, subscription billing with Stripe.
Process
Clear thinking first. Then architecture, implementation and stable operation — like a deploy pipeline.
Understand
Clarify what actually needs solving before writing code.
Design
Make architecture, data flow, risks and constraints visible early.
Build
Develop, test and refine iteratively, in clear, traceable steps.
Operate
Software only counts once it stays understandable and maintainable in production.
About
Software engineering with a product perspective — on mobile and on the backend.
I'm Oliver Drewing, an Android & Product Engineer. I build mobile apps with Kotlin and Compose Multiplatform, and the backends, databases and infrastructure behind digital products.
My path into software started early: archive software in Visual Basic and PHP web applications around 2000, followed by nearly 20 years in production management for film and TV. From 2022 to 2024 I completed a certified Android/Kotlin program (ILS Hamburg, overall grade 1.0), and since 2024 I have been working full-time on my own mobile and web products.
Production taught me ownership, structure under time pressure and clear communication across many stakeholders — that still shapes how I run projects today. Alongside mobile and backend work, I'm expanding my Python and data skills.
career.log
For remote roles, app and web projects, and product conversations.
Whether it's a role, an app or web project, or a first conversation about an idea — I'm happy to hear from you.