20+
YEARS EXPERIENCE
ENGINEERING LEADER
Josef Chose
Sima
Developer & Product Designer
A creative person who must always be building. After 20+ years in tech — from webmaster to CTO — I discovered that my true passion lies at the intersection of development and product design. I love finding new paths and solutions that aren't obvious at first glance — and then building them myself. From idea to working prototype to production-ready application, I do it all. Full-stack developer, building for web, mobile, and desktop.
01 — ABOUT
500+
DEVS MANAGED
CTO
HIGHEST ROLE
4
COMPANIES BUILT
02 — EXPERIENCE
Career Timeline
2026 — PRESENT
Co-Founder & CTO
HarryApp.ai
AI-powered product, full-time. Prague, on-site.
2024 — PRESENT
Director of Engineering
Groupon
B2B engineering leadership, Prague
2019 — 2024
Chief Technology Officer
Woltair
Full-stack tech leadership, 4.5 years scaling clean energy platform
2015 — 2019
Co-Founder
Supro Nivelo
Software development consultancy, Prague. Key clients included Prima FTV and PPF. Full-service engineering delivery and technical consulting.
2012 — 2015
Head of Development
Seznam.cz
Led development department managing 500+ developers. Product strategy, design, and engineering leadership at Czech Republic's largest internet company.
2006 — 2012
Senior Developer & Team Lead
Seznam.cz
Progressed from developer to team lead. Built and scaled key products and mentored junior engineers.
2002 — 2006
Web Developer
Seznam.cz
Started as a webmaster, quickly grew into full-stack development. Early days building the foundations of Czech internet.
03 — SERVICES
How I Can Help
Technical Leadership
CTO-as-a-service, engineering strategy, team structure, tech stack decisions
Software Architecture
System design, scalability planning, microservices, API design
Product Strategy
Product-market fit, roadmap planning, feature prioritization
Team Building
Hiring strategy, engineering culture, mentoring, agile processes
04 — BEYOND WORK
Passions & Projects
AI & Automation
My newest passion. AI gives us an enormous ability to realize ideas, but the key is knowing what to build. I work as a manager with deep technical insight, using AI daily for ideation, learning, automation, and application development. I can't imagine working without it anymore.
Drifting & Motorsport
Long-time organizer of the Czech Drifting Championship, including video production and live race streaming. Co-host of the Driftheads podcast with David Kalaš, Czech Republic's most experienced drifting judge.
Japan Drift Tours
Annual trips to Japan with groups of 10-12 enthusiasts. Together with Aleš Síla, we guide tours and run a drift school at Ebisu Circuit with two dedicated drift cars. jedudojaponska.cz
Video & Content Creation
YouTube channel chosecz with 20K+ subscribers and automotive content, mostly from Japan trips. Not actively producing now, but the channel lives on.
Product Design
Finding new paths and solutions that aren't obvious at first glance. Rapidly prototyping ideas by leveraging deep engineering knowledge.
05 — CONTACT
Let's Build Something Great
Have a project in mind or need engineering leadership? I'd love to hear from you.
info@supro-nivelo.com Send Message