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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.

LegacyCode PHP SoftwareEngineering Symfony

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How I Rebuilt Almost? From a Reflection App Into a Behavior Change System

Almost? started as a reflection app for logging near misses. I rebuilt it into a behavior change system that captures almosts, reviews patterns, and turns them into practical adjustments.

Behavior Product Systems

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Keeping Routines While Traveling

The four lightweight habits I keep while moving through South America, so travel stays energizing instead of ungrounding.

health mindset routines travel

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Designing Systems That Survive Your Absence

I left for a month without a laptop. Only my phone. It forced a simple test: what in my life and work actually keeps running without me? So before leaving, I designed for absence: automate the boring parts, make defaults safe, document what used to live in my head, and remove workflows that require constant supervision. Absence is a design tool. Remove yourself from the loop and the hidden dependencies show up immediately.

Automation SoftwareEngineering Systems

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Preparing to Disappear for a Month

On letting go of control, stepping out of momentum, and what it means to actually be gone.

personal reflection travel

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OneSignal Subscriptions for a Static Blog: Email + Web Push Without Overengineering

I wanted blog subscriptions, not a new SaaS project. So I used OneSignal for email + push and wired notifications into CI using frontmatter dates. No backend. No user table. No admin UI. The best system is the one you stop thinking about.

Automation OneSignal SoftwareEngineering WebDevelopment

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Vigil III: What Feedback Actually Changed in My Thesis

Feedback did not just polish my thesis. It changed the framework early on, and later changed how that framework had to be written.

Systems Thesis Writing

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Shipping Experiments Instead of Chasing Outcomes

I used to chase outcomes: perfection, being "done", traction. Now I try to ship experiments instead: small, real slices I can evaluate and iterate on. Outcomes are noisy. Shipping is controllable.

Practice SoftwareEngineering Systems

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Vigil II: From Draft to Defensible

How I turned months of building Vigil into a thesis that can survive being read, by writing in phases, using ChatGPT for early drafts, and treating case studies as pressure tests rather than proof.

Systems Thesis Verification Vigil Writing

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How to Stay Consistent Learning Finnish: Systems Over Motivation

I stopped trying to stay motivated to learn Finnish and started designing the system around it. Once exposure, retrieval, and feedback had defaults, progress became boring and reliable.

Finnish Habits Language Systems

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Vigil I: Designing a Framework for Verifying Behavior

How a fuzzy thesis topic turned into a framework I could actually run.

Python Systems Testing Thesis Verification

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The Orthodox Jews On Their Way To America

How Orthodox Jewish migrants fleeing tsarist Russia became trapped between disease, politics, and transatlantic power struggles.

europe guest history migration

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What Keeps Me Steady Right Now

After travel and transitions, I’m returning to a few simple basics that make everyday life feel manageable again.

Habits Reflection Transition

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Being Back in Hamburg

Coming home doesn’t always mean arriving. Sometimes it just means restarting.

Home Reflection Transition

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Switching Back to Work After a Long Break

Returning to work is less about tasks and more about re-establishing orientation, especially when systems keep drifting.

Reflection Remote Work

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New Year's Intentions, Anchored by Systems

Why I still set goals, but rely on systems, reflection, and consistency to carry the year.

Habits Reflection Systems

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Switching Into Vacation Mode

A short reflection on slowing down without dropping my routines over the holidays.

Habits Personal Reflection

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How My Thesis Idea Took Shape

A brief look at how a vague interest turned into a concrete research direction.

AI Personal Thesis

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My Exchange in Jyväskylä

A short reflection on a semester that changed more than I expected.

Exchange Personal

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Learning Finnish

A reflection on picking up a language that first felt impossible.

Exchange Finnish Language Learning

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My First Paid Freelance Project

A look back at building a small Firebase-powered MVP.

Firebase Freelancing Next.js

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Learning Balance Here

Two months in Finland, finding calm after a fast start.

Personal Reflection

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Why I Ditched Fastlane for Screenshot Automation

When convenience tools become inconvenient.

CI/CD iOS

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Counting Milestones

Looking back at my journey as I turn 25.

Personal Reflection

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Contributing to SwiftLint: Enforcing Implicit Optional Initialization Style

Enforcing a consistent style for initializing optional variables in SwiftLint.

Code Quality Swift SwiftLint

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ngrms - Simplifying Anagrams with SwiftData and CloudKit

A journey from complexity to simplicity in building a collaborative anagrams game.

CloudKit Swift SwiftData iOS

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Summer semester reflection

Reflecting on my experiences and growth during the summer semester.

Reflection Summer Semester

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StudentScroll?

A full-stack social platform for students, developed in a five-person team during my exchange semester in New Zealand.

Full Stack React Spring Boot University

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Why We Replaced Our Swift Backend with Vercel

Smokes used to use a Swift backend hosted on AWS. Here’s why we replaced it with Vercel.

Backend Deployment Vercel iOS

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Why I Use Devcontainers

Isolated, reproducible, and clean environments for modern development.

Devcontainers Productivity VS Code

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Almost? From Portfolio to Product

A retrospective on building and rebuilding one of my first iOS apps.

Firebase Personal Project SwiftUI iOS

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Migrating Domains from Squarespace to Cloudflare

Saving money, gaining analytics, and smoothing out the rough edges.

Cloudflare Personal Website Web Analytics

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Building Smokes - From MVP to the App Store

How a small smoking tracker app turned into a published SwiftUI project, and what I learned from it.

App Store Personal Project SwiftUI iOS

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Building my website with Astro

A journey through creating my personal website using Astro.

Astro Personal Website

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Welcome!

Notes on building things, staying steady, and figuring it out along the way

Introduction Reflection Writing

«project»

Sustainable IT Dashboard

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

CI/CD Cloud Infrastructure Devcontainers Docker Terraform

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Vigil

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

CLI Python Research Systems Testing Thesis Verification

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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.

App Store Firebase Swift SwiftUI iOS

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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.

Data NLP Python Research

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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.

App Store Swift SwiftUI iOS

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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.

Astro Product Systems

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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.

Infrastructure Node.js Raspberry Pi React

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Pet Management Platform

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

Firebase Freelancing Next.js TypeScript

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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.

App Store Swift Swift Vapor SwiftUI Vercel iOS

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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.