5x founder

Zdeněk Höfler

YC founder & CTO at Coinrule (S21) | Fractional CTO for AI, fintech and product teams moving from prototype to production

Founder

Coinrule· Summer 2021🇨🇿 Plzeň - město, Plzeň, Czechia

in LinkedIn 𝕏 @ethical_daddy

2026Founder· Familia: Family Planner

Founder · since 2004

Company

Familia: Family Planner

Role

Founder

current

Stage

—

no public source

Raised

—

no public source

Based

—

Founder / co-founder — the company's markEmployee / research role

Source: LinkedIn work history

Profile coverage4 of 7 · missing education, posts, contact

Coinrule

Coinrule Automates Your Crypto and Stock Investments

Summer 2021

Experience

Career

Coinrule (YC S21)
Co-founder
Co-founder, CTO · Plzeň · 2024 – Present
2024
Coinrule (YC S21)
Co-founder
Co-founder, CIO, Software & Infrastructure Architect · Pilsen, Plzeň, Czechia · 2021 – 2024
2021
Coinrule (YC S21)
Co-founder
Co-founder, CTO, Software & Infrastructure Architect, Full-Stack Developer · London, United Kingdom · 2018 – 2021
2018
Familia: Family Planner
Founder
Founder · 2026 – Present
2026
Ukey1
Founder
Founder, CEO, Full-Stack Developer · Oblast Londýna, Spojené království · 2013 – 2020
2013
All Together
Co-founder
Co-Founder, Front-end Developer · 2009 – 2013
2009
Freelancer
Founder
Back-end & Front-end Developer · 2004 – 2013
2004
O2 Czech Republic
Back-end Developer · 2011 – 2012
2011
ELTA Czech
PHP Developer · 2005 – 2010
2005

Bio

Technical founder, full-stack builder and hands-on engineering leader with 20+ years of experience building platforms end-to-end — from design and architecture to infrastructure, deployment, security and operations. Strong product sense, founder-level ownership and an obsession with building robust systems that users love. Experienced in fintech, cybersecurity, automation, trading infrastructure, and high-availability systems.