Product Builder · Berlin

Hi, I'm Serkan.

Product builder. With ❤️ from Berlin, Germany.

I usually describe myself as a product person with engineering roots. I started my professional journey as a software engineer, grew into an engineering leadership role, and eventually moved into product management — where I get to bring both worlds together: technical judgment and product instinct.

Outside of my day job, I like building small things for fun. One of them is CV Butler, a tool that runs an ATS review on your résumé, scores it against a job description, and writes you a cover letter. Another is Taxi Station, a web-based taxi station management game set in Istanbul. I also write about product and engineering on Medium.

Want the fuller story? Check out my experience, or just say hi.

Experience

An engineer's path into product, mostly in payments, fintech and platform products.

Core capabilities

Education

Download résumé (PDF)

Side Projects

Things I've built on the side.

CV Butler

Live

An ATS review for your résumé, a score against a specific job description — surfacing skill, experience, and education gaps — and a cover letter written for you, generic or tailored to the posting.

Started as a weekend project to scratch my own itch during a job search; the demo card on the right is a real piece of its UI.

Match Score: 78/100
2 gaps
Skills, Experience & Education

Strong skills match. Missing Kubernetes experience.

View full report

Taxi Station

Pre-alpha

A web-based taxi station management game set in Istanbul — dispatch drivers, manage your fleet, and grow your station across the city.

Early pre-alpha build, playable in the browser.

Taxi Station isometric night map of Istanbul with dispatch panel showing an active passenger request at İstanbul Havalimanı

Rabbit Hole

Live

A mobile app for discovering knowledge based on your preferences — swipe through bite-sized facts pulled from Wikipedia, Tinder-style, and follow whatever catches your interest down the rabbit hole.

Initial version released on Google Play — iOS development is ongoing.

Get it on Google Play iOS coming soon
Rabbit Hole feed: a fact card about music, with like/skip buttons Rabbit Hole quiz screen with a multiple-choice question Rabbit Hole profile screen with streak, XP, badges, and interest weights

JEV Orchestrator

Experiment

A simulation experiment to understand and evaluate how JEV, a "System One" model, acts as a decision-maker in payment routing.

Results and methodology are published on the experiment website.

Payment Decision Lab, the JEV Orchestrator experiment site: 'Same payment. Same data. Different answers.' with a payment scenario picker

Writing

Notes on product, engineering, and the space between.

I write on Medium when I have something worth saying — usually about the messy overlap between building things and deciding what's worth building.

I Know Kung Fu (And So Does the Machine)
Read on Medium →
Bruce Lee and The Art of Product Management
Read on Medium →
Clones, Parrots and Puzzles: Is AI's Thinking Still an Illusion?
Read on Medium →
The Council of Elrond: Lessons in Stakeholder Communication
Read on Medium →
See all posts on Medium →

Book

Blockchain 101
Read the free PDF →

Contact

Happy to hear from you.