Aslak Hellesøy
CTO at Open Art Market
London, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolAslak Hellesøy is a hands-on CTO and entrepreneur with over two decades of experience building high-quality, maintainable software across finance, publishing, and marketing. He scales small agile teams and designs modular architectures with robust CI/CD, cloud ops (AWS, GCP, Cloudflare) and workflow orchestration using Temporal and Cloudflare Workflows. Since 2023 he has applied LLMs, Bayesian inference and multi-armed bandits to real-time decisioning, automation and personalization, and he still writes production code and mentors engineers. He co-founded Cucumber Ltd (acquired by SmartBear), authored technical books with 25,000+ copies sold, and contributes extensively to beloved open-source projects in the Cucumber/Capybara testing ecosystem. Recent roles combine CTO and advisory work on AI-powered platforms, fractional art marketplaces and precision document processing for publishing. Based in London, he pairs entrepreneurial grit with a rare mix of testing-core open-source depth and production ML/edge deployment experience.
22 years of coding experience
22 years of employment as a software developer
Examen artium Natural Sciences, Examen artium Natural Sciences at Fagerborg VGSMaster Computer Science, Master Computer Science at INSA Toulouse - Institut National des Sciences Appliquées de Toulouse
French, English, Norwegian, Spanish, Swedish
Stackoverflow
1,191reputation
71kreached
34answers
1question
Github Skills (76)
lexer10
testing10
rspec10
http10
test-framework10
websocket10
acceptance-testing10
integrations10
ruby10
javas10
junit10
websockets-client10
client-websocket10
javascript10
bulma10
Programming languages (31)
Github contributions (5)
webbit/webbit
Feb 2011 - Jul 2013
A Java event based WebSocket and HTTP server
Role in this project:
Backend Developer
Backend DeveloperContributions:453 commits, 2 comments in 2 years 6 months
Contributions summary:Aslak primarily worked on improving the `webbit/webbit` project, a Java-based WebSocket and HTTP server. Their commits focused on implementing static resource handling by adding an `EmbeddedResourceHandler` to serve static resources embedded within a JAR file and refactoring common functionalities to an abstract class. They also updated dependencies such as Netty and JUnit to newer versions.
http-serverjavawebsocket
EventSource/eventsource
Feb 2012 - Sep 2022
EventSource client for Node.js, browsers and other JavaScript runtimes
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:153 commits, 16 PRs, 36 pushes in 10 years 9 months
Contributions summary:Aslak's primary contribution was enhancing the `eventsource/eventsource` library, primarily by implementing and refining its functionality. They focused on improving the core functionality through testing of the event stream parsing, handling of multiline strings, and the implementation of reconnection. They added functionality for event listeners and handling various edge cases related to event stream parsing and connection management, including handling of HTTP redirects and 403/401 status codes.
eventsourcejavascriptnodejsruntimessse
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.