# Carsten Schmitz

> Carsten Schmitz is the Hamburg-based co-founder and CTO of LimeSurvey GmbH. He joined the PHPSurveyor open-source project as a translator in 2004, took over project leadership from Jason Cleeland in 2006 and co-founded the company in 2015. His public work includes software maintenance, contributor support and teaching survey creation.

- **Role:** Founder & CTO at LimeSurvey GmbH
- **Organizations:** LimeSurvey GmbH, LimeSurvey / PHPSurveyor project
- **Known for:** Led the transition from PHPSurveyor to LimeSurvey., Co-founded LimeSurvey GmbH in 2015., Created the LimeService hosting offer, later renamed LimeSurvey Professional and LimeSurvey Cloud.

## Career timeline

- **2004** — Joined PHPSurveyor as a translator, subsequently contributing bug fixes and support.
- **2005** — Began taking on the lead project role in February.
- **2006** — Jason Cleeland transferred the project to Schmitz.
- **2007** — The project was renamed LimeSurvey during his leadership.
- **2009** — Asked about progress toward a Debian package in June.
- **2015** — Co-founded LimeSurvey GmbH in Hamburg.
- **2018** — Listed as CEO and co-instructor with Markus Flür for a hands-on LimeSurvey workshop at GOR 2018.
- **2026** — Identifies as Founder & CTO on GitHub; attended FrOSCon with an LED LimeSurvey backpack in August.

## Achievements

- Led the transition from PHPSurveyor to LimeSurvey.
- Co-founded LimeSurvey GmbH in 2015.
- Created the LimeService hosting offer, later renamed LimeSurvey Professional and LimeSurvey Cloud.
- Co-taught the Survey Creation With LimeSurvey hands-on course at GOR 2018.

## Latest updates

- **2026-08** — Attended FrOSCon; LimeSurvey invited attendees to chat with him and identified his LED-logo backpack.
- **2026-09** — The LimeSurvey community author archive lists release entries under his name, including 260928.

## Links

- Website: https://www.limesurvey.org
- GitHub: https://github.com/c-schmitz

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Profile page: https://yespress.io/carsten-schmitz
Published by YesPress — https://yespress.io
Last updated: 2026-10-13