Kai 'Oswald' Seidler

About

Most people know me as the guy who created XAMPP and standardised local web development for millions of engineers worldwide. My professional journey has taken me from the early days of open-source evangelism to leading engineering teams through massive global scale. With over 25 years in software development, systems engineering, and architecture leadership roles, I leverage my experience to help organisations transform, strengthen, and scale their engineering and architecture capabilities.

Experience

• Head of BPI Architecture & Design Competence at ASML
  Sep 2025 - Present · 10 mos

• VP Infrastructure & Platform Engineering at JTL-Software-GmbH
  Jan 2024 - Aug 2025 · 1 yr 8 mos

• The Adecco Group (Berlin, Germany)
  • Group SVP Engineering & Technology
    Oct 2022 - Dec 2023 · 1 yr 3 mos

  • Managing Director @ Adecco Group Technology Center GmbH
    Apr 2022 - Sep 2023 · 1 yr 6 mos

  • Group VP Engineering Solutions & Integration
    Apr 2022 - Oct 2022 · 7 mos

• Head of Development Platforms for Europe at Wayfair
  Jun 2019 - Feb 2021 · 1 yr 9 mos

• HERE Technologies (Full-time · 5 yrs 7 mos)
  • Director Software Engineering
    Apr 2017 - May 2019 · 2 yrs 2 mos

  • Head of Release Engineering
    Nov 2013 - Mar 2017 · 3 yrs 5 mos