Cardo Uustal
CTO at DrHouse
Tallinn, Harju County, Estonia
Summary
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SeniorCardo Uustal is a pragmatic CTO and backend engineer with nine years of experience building and scaling mission-critical systems for regulated domains like telehealth, payments, and fintech. At DrHouse he architected and implemented the platform’s entire backend with a small team—owning patient queueing, insurance eligibility, payments, EHR integrations and real-time medication delivery across all 50 US states. He is a hands-on Java/Kotlin developer (Spring Boot) who thrives through the full lifecycle from architecture and TDD to CI/CD, observability and secure cloud operations. Comfortable navigating HIPAA/PHI and payment compliance, he pairs product-focused speed with rigorous engineering practices. Based in Tallinn, he balances leadership—hiring and mentoring the backend team—with day-to-day coding and incident ownership. His GitHub motto, “Learning from every commit reversal,” reflects a pragmatic, iterative approach to building reliable systems.
9 years of coding experience
5 years of employment as a software developer
English, Estonian, Russian
Stackoverflow
490reputation
9kreached
11answers
4questions
Github Skills (29)
java-bytecode10
java-programming10
dfa10
java9
kotlin8
mongodb8
kotlin-library8
kotlin-coroutines8
jvm7
scala7
database7
string-formatting6
spring-data-jpa6
escaping6
spring-security6
Programming languages (4)
Github contributions (5)
cardouken/joerogan-quote-bot
Sep 2019 - May 2022
Replies to any message on /r/JoeRogan that contains "!joe" with a random quote by Joe Rogan
Contributions:51 commits, 10 PRs, 45 pushes in 2 years 8 months
joediscordjoe-roganrepliesrogan
cardouken/mooc2020
Feb 2020 - Feb 2021
Java Programming I 2020 MOOC.fi full solutions
Contributions:5 commits, 31 PRs, 7 pushes in 1 year
mooc-fijava-programmingjava-bytecodedfajava
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