#215: Arthur Pastel on creating actionable optimisations with 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 weeks. Join us for mentorship, accountability, and a supportive community that keeps you moving forward. Start your PDM journey now! 🌟✅ https://pybit.es/catalogue/the-pdm-program/ ___ If you found this podcast helpful, please consider following us! Start Here with Pybites: https://pybit.es