Juha Yrjölä
Chief Technology Officer at Kausal
Helsinki, Finland
Summary
👤
Senior🎓
Top SchoolJuha Yrjölä is a seasoned technology leader and founder with 16+ years of experience building scalable, data-driven platforms for public sector and climate action. As CTO and co-founder of Kausal, he has architected systems used by 50+ cities across 15 countries, combining distributed systems, statistical modeling, GIS and open APIs to make climate planning real-time and transparent. His career ranges from Linux kernel and OTA update work at Nokia to leading Helsinki’s open-source city program and launching 140+ civic projects, giving him rare fluency in both low-level engineering and public governance. Juha is known for pragmatic open standards and multi-region Kubernetes architectures that deliver sub-second performance and 99.9% uptime, and for translating complex climate science into intuitive tools that non-technical stakeholders actually adopt. He also brings an unexpected background in psychology and grassroots transparency work, which informs his focus on usability and radical transparency in civic software.
16 years of coding experience
20 years of employment as a software developer
MSc, Computer Science, MSc, Computer Science at Teknillinen korkeakoulu-Tekniska högskolanMA, Psychology, MA, Psychology at Helsinki University
Finnish, English, Swedish, Spanish
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (138)
api-platform10
authentication10
microsoft-exchange10
oidc-client10
backend10
agent-based-simulation10
django10
api10
payment10
jwt10
access-control10
single-sign-on10
predict10
openid-connect10
reservation-system10
Programming languages (10)
Github contributions (5)
kausaltech/reina-model
Mar 2020 - Jan 2022
Agent-based simulation model for COVID-19 spread in society and patient outcomes
Contributions:1 release, 243 commits, 14 PRs in 1 year 10 months
agent-based-simulationsimulationagent-based-modelingepidemiology
kausaltech/dvctest
Aug 2020 - Jul 2026
Contributions:1371 pushes, 1 branch in 5 years 11 months
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