About
Marian Kamenistak
Mentor to CTOs, VPs, and the engineering leaders who report to them. 3,400+ sessions across 17 countries. Based in Prague, working across Europe and North America.
Marian Kamenistak is an engineering leadership mentor based in Prague. He mentors 1:1 with engineering managers, directors, VPs, and CTOs across Europe and North America. Since 2019 he has run 3,400+ mentoring sessions with 300+ leaders from 17 countries, with an average review score of 9.2 out of 10.

Portfolio
How I've helped 300+ leaders.
One network, one goal. Whether you need a mentor, a room full of peers, or your next senior hire.
People
1:1 mentoring
Promoted, hired, or the fire out, with solid ground under your feet by session 4. 3,400+ sessions since 2019.
Pick your role →Leadership Academy
Your EMs lead in weeks, not years: they learn the job while doing the job, in a cohort inside your company. 86 NPS.
See the program →Hiring
Senior hires in weeks, no recruiter fee. 2,000+ leaders know who is actually good long before the CV lands on your desk.
Browse the list →
ELC Community
Community
Your 11pm "my VPE just quit" fire, answered by someone who has survived the same one. 2,000+ ELC leaders, CEE-native.
Join ELC →Meetups
Leaders walk out with their next hire, their next mentor, or the answer to this quarter’s fire. 120+ in the room, 12 times a year.
Register for the next one →Conference
A year of contacts in one day: 500+ engineering leaders, speakers from Netflix and Stripe, Czech Television in the room.
See the conference →
Companies
Speaking
The room leaves with a playbook, not platitudes. Keynotes from someone who ran the org. 4 conferences, 6 panels, 6 podcasts a year.
Topics and clips →Productivity audit
Roadmap slips stop in 3 months, or the money is on me. I find what breaks first, and what to touch to make it stop.
What I look at →Fractional CTO
No CTO in the seat? I take it when the fit is right. Your org gets built by someone who grew one from 8 to 80+ teams.
How it works →
Background
Been in the seat.
One road, from hands on the keyboard to the room that builds Europe's next leaders.
- Age 11
Programming since age 11
Hands dirty with code since I was 11, long before the computer science degree made it official. The craft came first. It still does.

- Top 3%
Toptal top 3% developer
Screened into the top 3% of developers worldwide on Toptal. For a while I was one of the top developers in Central Europe.

- Bay Area

Principal architect at Databricks
The dream job took me to Silicon Valley for 4+ years as a Principal Software Architect at Databricks. I learned the US business drive up close. Then I got married, and my wife and I came home to Central Europe.

- The unicorn
Mews, a $2bn+ unicorn built in Europe
Back home I helped grow Mews from the inside into a $2bn+ unicorn. Through Series C, R&D went from 8 to 80+ teams while the roadmap kept shipping. Engineering leadership at Manta, acquired by IBM, along the way.
$2bn+valuation - 300+ leaders
Mentored 300+ leaders, grew more unicorns
In 2023 I walked away from a $350k role to go all-in on mentoring. 3,400+ sessions with 300+ leaders across 17 countries since 2019, helping their companies and the next unicorns grow. Full numbers here.

- Today
Building ELC: community, conference, startups
The Engineering Leaders Community: 2,000+ members across CEE, 120+ leaders in the room every month, and a conference with 500+ attendees and speakers from Netflix and Stripe. Plus a multitude of startups I help build along the way, as a mentor or fractional CTO.


Mission
Building Silicon Valley-level product tech leaders in the Heart of Europe.
Not another coach.
01 / 05
Been in the seat.
I helped build Mews into a $2bn+ unicorn: 8 to 80 teams, roadmap still shipping. I went through the shit.
02 / 05
CEE-native, US-fluent.
4+ years in the Bay Area as a Principal Software Architect at Databricks. I understand US business drive and European culture.
03 / 05
Still highly technical. AI freak.
Bullshit me on estimate, effort, code quality or architecture and I'll ask to see the code or your AI skill set.
04 / 05
Financially independent.
I don't need your money. I'm financially retired. Seeing you grow is my payoff.
05 / 05
Direct.
Mentoring first. I boost you fast. No esoteric loops.
Gallery
In the room. With the audience.
3,400+ sessions across 17 countries. Scroll to see the range.

ELC Conference, main stage

Conference keynote, full house

mDevCamp keynote, Prague

Jun 2026 · ELC meetup #39: 5 levels of AI adoption

May 2026 · ELC meetup #37: 12 steps to boost your value

Apr 2026 · ELC Conference

Mar 2026 · ELC meetup #36: interviews for AI-native candidates

Jan 2026 · ELC meetup #33: stop hiring unicorns, grow leaders

mDevCamp, Prague

Nov 2025 · ELC meetup #32: radical ownership

Nov 2025 · ELC meetup #31: boost your value on the market

Evening leadership talk

Oct 2025 · ELC meetup #30: AI dev tools, reality check

Sep 2025 · ELC meetup #29: leading through big change

Jun 2025 · ELC meetup #28: performance reviews like a king

Apr 2026 · ELC Conference

Workshop: measuring team productivity

Apr 2025 · ELC meetup #26: platform engineering in the wild

Apr 2025 · ELC meetup #25: earning a new team's trust

Apr 2026 · ELC Conference

Leadership workshop: why the roadmap slipped

Plato Elevate, San Francisco

Mar 2025 · ELC meetup #24: PM and EM synergies

Feb 2025 · ELC meetup #23: selling technical ideas

ELC meetup, audience Q&A

Apr 2026 · ELC Conference

Jan 2025 · ELC meetup #20: saving one day a week with AI

Dec 2024 · ELC meetup #19: the real role of Staff/Principal devs

In-house leadership workshop

Nov 2024 · ELC meetup #17: Agile is dead. Now what?

ELC meetup, Prague