Aslak Hellesøy - CTO at Papyria

Aslak Hellesøy

CTO at Papyria

London, England, United Kingdom

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Summary

🤩

Rockstar

🎓

Top School

Aslak 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 VGS

Master Computer Science, Master Computer Science at INSA Toulouse - Institut National des Sciences Appliquées de Toulouse

French, English, Norwegian, Spanish, Swedish

Stackoverflow

Stats

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 (30)

C#CMakefileGoHTMLSvelteGroovyTypeScript

Github contributions (5)

cucumber/cucumber-rails

Nov 2009 - Apr 2021

Rails Generators for Cucumber with special support for Capybara and DatabaseCleaner

Role in this project:

Full-stack Developer

Contributions:1 review, 360 commits, 3 PRs in 11 years 6 months

Contributions summary:Aslak's primary contribution involved refactoring and enhancing the codebase, particularly focusing on integration testing and overall project stability. Their work encompassed modifications to both the core rails features as well as the test environment. This included changes to the step definitions and javascript emulation features. These modifications likely contributed to improved test coverage and a more robust development process.

railsrubygeneratorscapybaracucumber

cucumber-attic/gherkin2

Sep 2009 - May 2016

A fast Gherkin parser in Ragel (The parser behind Cucumber)

Role in this project:

Back-end Developer

Contributions:1036 commits, 8 PRs, 10 pushes in 6 years 9 months

Contributions summary:Aslak's commits focus on the implementation and refinement of the Gherkin parser library. They implemented features to support various aspects of Gherkin syntax, including doc strings, row parsing, and handling scenario outlines. The contributions also include bug fixes and performance improvements to the lexer and JSON formatter, aligning the library with the latest Gherkin language specifications.

gherkinbddcucumbergherkin-parserparser

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