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🥝 MTA & Anti-Abuse Engineer (m/f/d)

Open-Xchange | Olpe, Germany | Posted May 27, 2026

Job Description

Our mission:

Are you a motivated engineer who wants to make an impact by developing and operating scalable MTA platforms while designing systems to detect, prevent, and mitigate abuse?
At Open-Xchange (OX), we develop open-source communication and collaboration software used by public sector organizations, telcos, and hosting providers to keep data secure and under their control. Our products cover email, collaboration, DNS security, and related services, and are used by millions of people worldwide.


Discover what Open-Xchange offers you:

  • We work in a non-hierarchical organization that empowers everyone to take responsibility, stay focused, and contribute directly to the company’s success and customer value.
  • We value expertise and continuous professional development. Our professionals work closely with experienced coll...

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