guelmino.dev

Leonard Guelmino · Korneuburg / Vienna

I build software for the worlds I live in.

Paramedic instructor who built for therapists. Bird-ringing volunteer who built for ringing stations. An ADHD brain building ExecuMate.

Currently: founder of mind-the-brain →

casual portrait
Korneuburg, Austria

Care

Volunteer paramedic and instructor with the Austrian Red Cross.

→ built the sites therapists trust

Bird ringing

Volunteer at the banding table, ringing sessions in Illmitz.

→ built BirdDoc for ringing stations

ADHD

My own brain — stated plainly, built for deliberately.

→ building ExecuMate

Now

I have ADHD, and I’m building ExecuMate — the tool my own brain needs.

With mind-the-brain I’m building a platform that externalizes executive function instead of trying to fix people: weekly planning with accountability partners, an AI assistant that detects overload before it becomes burnout, and a community connecting ADHD’ers with peers and specialists.

Pre-launch Waitlist open ↗ German-speaking market first

Products

Things I own, run, and answer for.

Founder · sole engineer · operator

Finds cooperative housing — Genossenschaftswohnungen — across Austria. I built it in 2021 and have run it alone ever since.

4 years

in production

1,000+

users

70,000

listings tracked

Angular Python / Django PostgreSQL
sofort-wohnen.at — apartment search with filters for Genossenschaftswohnungen across Austria
BirdDoc — station dashboard with catch statistics for a ringing project at Lake Neusiedl

birddoc.eu · public beta

A digital station journal and banding software for bird-ringing stations: data entry right at the banding table, automatic ring-number sequencing, one-click IWM/EURING export, per-organization workspaces. Hosted in Austria, GDPR-clean.

Born from my own volunteering — field-tested at ringing sessions in Illmitz, and already powering a university thesis project.

TypeScript Angular PostgreSQL Docker

Built for caregivers

People in the care professions trust me with their public face. For both practices below I delivered the full package — design, build, hosting, and ongoing maintenance.

Practice site for a psychotherapist in Korneuburg.

Practice site for a speech therapist, Hollabrunn & Korneuburg districts.

Story

2026

Founded mind-the-brain to build ExecuMate.

2025

MSc Software Engineering & Internet Computing, TU Wien. Thesis on stateful serverless functions for edge computing.

Master’s thesis · Bachelor’s thesis

2023–2024

Product Owner at Wüstenrot Technology — led a 7-person engineering team.

2021–present

Founded and operate sofort-wohnen.at.

2021–present

Active volunteer paramedic and instructor with the Austrian Red Cross.

Contact

The fastest way to reach me:

leo@guelmino.dev

LinkedIn →

I reply to investors, potential co-founders, and early hires within a day.