Systems Engineer Email Infrastructure m/f/d

Full-time · permanent Remote, Germany Published on 24 June 2026

Behind Conbool runs an email gateway that inspects, encrypts and delivers business-critical messages every day. Deliverability, standards compliance and operational reliability directly determine the quality of the product.

We are looking for someone who understands this engine room and keeps building it: from mail flow and DNS standards to on-premises installations at customers with demanding requirements.

What you will work on

• Operate and evolve the mail flow with Postfix and rspamd
• Implement and maintain email standards: SPF, DKIM, DMARC, DANE, MTA-STS, TLS-RPT
• Monitor deliverability, maintain IP reputation and bounce handling
• Support on-premises deployments at customers: Docker, high availability, monitoring
• Analyse incidents, document them properly and fix them at the root

What you bring

• Solid experience with Linux and Docker in production
• Hands-on experience with mail servers, ideally Postfix, and spam filtering
• Good understanding of DNS and email authentication
• Calm, structured way of working, even when things are on fire
• Very good German for direct customer contact

What we offer

• Permanent contract and 30 days of vacation
• Remote-first with flexible working hours
• Annual health budget for massages, fitness or physiotherapy
• Drinks and snacks budget for the home office
• Hardware of choice and a budget for professional development
• Team offsites several times a year
• Creative freedom across the entire infrastructure

Sounds like a fit?

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