#215: Arthur Pastel on creating actionable optimisations with CodSpeed
From Pybites Podcast by Julian Sequeira & Bob Belderbos
February 12, 2026 · 42 min
About this episode
Bob interviews Arthur Pastel about performance regressions and the creation of CodSpeed.
In this episode, Bob sits down with Arthur, a Python engineer based in France and the creator of CodSpeed, to dig into a problem many teams don’t notice until it’s too late: performance regressions. Arthur shares the story behind building CodSpeed, starting with real-world pain points from robotics and machine-learning pipelines where small slowdowns quietly piled up and broke systems in production. We discuss how CodSpeed fits into everyday developer workflows and why treating performance checks like tests or coverage changes how teams ship code. Arthur also shares how open source shaped the product’s mission, the surprising environmental impact of avoiding tiny regressions at scale, and why AI-driven coding makes performance guardrails more important than ever. Reach out to Arthur on LinkedIn: https://www.linkedin.com/in/arthurpastel/ Arthur's website: https://apas.tel/ Check out Codspeed: https://codspeed.io/ Github: https://github.com/CodSpeedHQ/codspeed ___ 💡🧑💻 Want to become a more focused, motivated, and effective Python developer? The Pybites Developer Mindset (PDM) Program helps you build strong habits, deepen your skills, and make real progress in just six…
People in this episode
Host: Bob Belderbos
Guest: Arthur Pastel
Topics covered
- performance regressions
- Python engineering
- developer workflows
- open source
- AI-driven coding
- environmental impact
Keywords
- performance
- CodSpeed
- Python
- open source
- AI
- developer workflows
- environmental impact
Mentioned in this episode
Organizations: CodSpeed, LinkedIn, Github, Pybites
Products: Pybites Developer Mindset (PDM) Program
Places: France
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