"I build usable software and the systems around it: backend services, infrastructure, delivery workflows, and production operations."

My Takes on Software and Life

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Maintaining a Symfony PHP App in 2026: Email Delivery, OAuth, and Boring Reliability

Nothing like a silent failure to remind you what the product actually is: emails leaving the building. When booking emails were no longer sent, I avoided the rewrite fantasy. I migrated SMTP, added OAuth token fetch and refresh, pulled the system into a repo with Docker Compose dev parity, and added health checks that page me when it breaks. Legacy systems don’t need drama. They need boring reliability.

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Catalog, Or What I've Created

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Sustainable IT Dashboard

Cloud-native backend system for monitoring sustainability-related IT metrics, built with Quarkus, Terraform, Kubernetes and Google Cloud infrastructure.

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Vigil

Behavioural verification framework that runs systems under controlled variation and checks their outputs.

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Almost?

It's a reflective iOS journaling app I designed and shipped, focused on learning from near-misses and identifying emotional patterns through a lightweight, structured experience.

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Analyzing Climate Opinions

A research project exploring public climate sentiment across social platforms using domain-adapted BERT models, focusing on trend detection rather than generic sentiment scoring.

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LaunchLab

An iOS app designed to guide aspiring founders through early startup stages using structured learning paths, AI assistance, and access to real consultants.

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leolem.dev

My personal website and writing space, built as a fast, static Astro project to showcase work, document projects, and support regular blogging.

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MoinCam

A Raspberry Pi–based livestream camera system I built for the Hamburg office, combining hardware control, real-time video streaming, and a web interface for shared remote access.

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Pet Platform

A compact web-based MVP built with Firebase and Next.js, focused on simple pet management, document storage, and shareable emergency profiles.

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Smokes

Smokes is a privacy-conscious iOS habit tracker released in 2023. I designed and shipped the app end to end, iterating on architecture choices and deliberately moving to a local-first model to keep costs low and privacy high.

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StudentScroll

StudentScroll is a full-stack social platform for university students, built during a semester abroad, featuring posts, follows, and real-time chat with a React frontend and Spring Boot backend.

What I Enjoy Outside Work