Bruno Zell
Founder & CTO at Penka.ai
San Francisco Bay Area United States
Summary
👤
Senior🎓
Top SchoolBruno Zell is a founder and CTO based in the San Francisco Bay Area with nine years of engineering and leadership experience building systems at the intersection of complex markets, distributed ledgers, and data visualization. He has led technical teams as CTO of Rabot Energy and now runs Ask Finance, pairing product vision with hands-on algorithmic problem solving. Bruno blends infrastructure chops and automation—evident from his Docker/Let's Encrypt certificate tooling—with a constant drive to improve code and systems. Comfortable moving between DevOps, backend engineering, and data analysis, he favors elegant, auditable solutions for market and ledger complexity. Colleagues describe him as someone who “dreams in code” and steadily pushes both technical quality and pragmatic delivery.
9 years of coding experience
7 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Technische Hochschule Lübeck
Stackoverflow
8,179reputation
1.2mreached
51answers
21questions
typescript
top-5%
asynchronous
top-5%
queue
top-5%
windows-runtime
top-5%
file-upload
top-1%
Github Skills (27)
docker10
scripting10
letsencrypt10
dockers10
automation10
script10
certbot10
file-upload10
sh10
netcore10
automations10
shell10
nginx10
devops10
windows-runtime9
Programming languages (9)
Github contributions (5)
staticfloat/docker-nginx-certbot-old
Sep 2018 - Oct 2018
Create and renew website certificates using the Letsencrypt free certificate authority.
Role in this project:
DevOps Engineer
DevOps EngineerContributions:15 commits, 2 PRs, 4 comments in 13 days
Contributions summary:Bruno focused on automating and improving the process of obtaining and renewing website certificates using Let's Encrypt within a Docker environment. They implemented logic to conditionally renew certificates, updated the script to manage the renewal process based on a timestamp, and refactored the code to improve maintainability. Further contributions included restructuring and optimizing the certificate renewal lifecycle within the Docker container, including logic around renewal timing.
certificate-authorityletsencrypt
BrunoZell/PrivateSetterContractResolver
Oct 2017 - Dec 2017
Contributions:22 commits, 10 pushes, 1 branch in 2 months
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