Nov 26, 2025 07:27:31 PMLEEVI JÄKÄLÄ
Leevi Jäkälä

hey, i'm Leevi

i build things, mostly with software. i like to work on hard things with a talented and hard-working team. i try to find simple solutions to complex problems from first principles. if you can't explain it simply, you don't understand it well enough.

currently building the machine that moves millions of cars @ Bahn Express

previously at Reaktor building IFE systems and web products

BAHN
EXPRESS
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Bahn Express

We're a tech company transforming how vehicles move across Europe.

Visit Website →

We're Hiring

If you're a hardcore engineer or product person, consider joining us. We're a small team building difficult things and moving extremely fast.

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Background

Bahn Express

CTO & Co-Founder

2025—Present
Bahn Express

building the company transforming how vehicles move across europe

Reaktor

Software Engineer

2022—2024
Reaktor

worked on an in-flight entertainment system for a major US airline. in another project worked on an ecommerce website for a major finnish retailer. worked across the stack, from infra to frontend.

Studies

University of Helsinki

Mathematics

2021

University of Helsinki

math and machine learning

Aalto University

Industrial Engineering & Management

2020

Aalto University

business, computer science, machine learning

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