Currently at Kongsberg Maritime

Theo Wilenius · Turku, Finland

Infrastructure & backend engineer._

I build reliable services, delivery pipelines, and the infrastructure behind them. Then I make them easier for the next person to operate.

backend · infrastructure · team leadership

View experience GitHub LinkedIn Email

profile/theo Turku · FI

~/about

I build backend systems and the infrastructure they run on. APIs, databases, CI/CD pipelines, containers, reverse proxies. I lean heavily on AI tooling to move faster and spend my time on the interesting problems. If it runs on a server, I probably have opinions about it.

Right now I’m splitting time between leading a dev team at my student organization, interning in DevOps at Kongsberg Maritime, and building side projects that teach me something new. Also slowly finishing a B.Sc. in computer engineering.

production ops 3+ yrs users supported 1,000+ services operated 5+

location

Turku, Finland

languages

Finnish · Swedish · English

study

B.Sc. Computer Engineering

Åbo Akademi University

beyond_work

Home automation tinkerer · ice swimmer · runs a perpetually-unfinished home lab

~/experience

Where I've worked.

Kongsberg Maritime

DevOps Trainee

May 2026 →

Ongoing DevOps role with a strong focus on observability, alongside infrastructure automation, CI/CD, delivery tooling, and operational work in a maritime technology context.

Observability, telemetry, and monitoring for production systems
Turning previously manual operational workflows into repeatable Ansible automation
CI/CD and delivery tooling for production systems
Operational reliability and broader DevOps responsibilities

Datateknologerna vid Åbo Akademi

Web Developer

2024 – 2025

Built and maintained web services for the student organization, plus small utilities and internal tools not worth listing individually.

Developed member-facing features for the association
Contributed to CI/CD and deployment workflows

Team Lead

2026 →

Promoted to lead the team. Planning delivery work, maintaining production services, and setting conventions.

Directing a team maintaining services for 1000+ users
Established CI/CD pipelines and deployment conventions
Defined maintainability standards for long-lived codebases

Since AI

Fullstack + Infra Developer

Ongoing

Full-stack product development and infrastructure work for the Since AI team.

Grand Prize winner at Since AI Hackathon 2025

~/projects

What I've built.

Router-side service

OpenWrt Presence Agent

A fast, read-only observation service that turns OpenWrt Wi-Fi association changes into an authenticated HTTP and WebSocket API.

6.5 ms median · 15.9 ms p99

OpenWrtGoWebSocketHome automation

View project

Home Assistant integration

OpenWrt Presence for Home Assistant

Native device trackers powered by the router you already own. Local, push-based, and designed to fail unavailable instead of inventing departures.

Local-only · no polling

Home AssistantPythonWebSocketHACS

View project

Student organization platform

A shared production platform for student organizations with 1000+ users. Includes member flows, content management, and operational tooling.

↗ datateknologerna.org ↗ kemistklubben.org ↗ biologica.fi ↗ pulterit.org

Next.jsPostgreSQLCI/CDCloudflare

View project

Portfolio & Guestbook

This site. Astro on Cloudflare Workers with D1 persistence, Turnstile protection, markdown negotiation, and agent-readable APIs.

AstroReactTailwindCloudflare WorkersD1

envsync

A dependency-free Go CLI that aligns real dotenv files with their .env.example templates without replacing secrets or evaluating file contents.

GoCLIDeveloper toolingDotenv

View project

Home lab infrastructure

My home lab runs OpenWrt on a GL.iNet Flint 3 and Home Assistant in a VM on a Lenovo ThinkCentre M920q. It also hosts websites and other services in Docker.

OpenWrtHome AssistantDockerProxmoxM920q

~/tools