The name stands for competence, fairness, and integrity.

For nearly 30 years, we have been successfully operating in the field of personnel services. The satisfaction of our clients and our more than 2,000 employees is our top priority. Thanks to our extensive network of locations in all major economic regions of Germany, we are always close to you and easy to reach. We believe in the uniqueness of every individual and focus on long-term partnerships based on trust, respect, and mutual benefit.

Join Team Aktiv and find your path with us:

Aktiv Personal Service – We get your career moving! #TeamAktiv

• No costs for you – the client company pays the fee.
• Discreet & confidential – even if you're currently employed.

And if this position isn't the right fit: Contact us – we can support you further:

• Access to other vacancies – including "hidden" positions that aren't publicly advertised.
• Full control – your documents will only be shared with your explicit consent.
• Less application effort – structured process, quick feedback.
• Advanced consulting – support for your next career steps and professional development.

Here's what happens next when you contact us:

• We will review your documents promptly – no long waiting times.
• We will contact you for a short phone or video call to clarify the most important details and answer your questions.
• We will present you transparently to the client company – only after your approval – and provide you with timely feedback on the next steps.
• We do not ghost – you will receive a binding response from us.

As an Associate System Engineer (m/f/d) , you will play a key role in the technical administration, continuous improvement, and stable operation of enterprise systems and interfaces. Your main responsibilities include:

• Administering and continuously developing the Celonis SaaS platform, including configuration, optimization, and lifecycle management.
• Coordinating system changes and upgrades , ensuring smooth implementation and minimal disruption to operations.
• Managing support processes and resolving incidents , including taking ownership of 2nd- and 3rd-level support for assigned solutions.
• Administering user and system access rights , ensuring compliance, security, and reliable role-based access management.
• Integrating and maintaining interfaces to source systems , including monitoring, troubleshooting, and ongoing improvements to existing integrations.
• Maintaining, optimizing, and continuously improving existing systems to ensure performance, availability, and scalability.

Please send us the following information:

• CV / résumé
• Employment references / proof of employment
• Proof of qualifications (certificates)

If you have any further questions, please do not hesitate to contact us at +49 6131 2764460 or +49 160 92940996 (WhatsApp only), or by email at mainz@aktivpersonalservice.de . We will be happy to answer any questions you may have.