Job
In this role, you ensure the stable operation and development of the hybrid mail infrastructure and Microsoft 365 services while sustainably optimizing mail flows.
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Your role in the team
- Our team is responsible for a central communications and collaboration platform with a strong focus on Microsoft 365, ensuring the stable, secure, and high-performance operation of business-critical services.
- In this role, you will take on a key responsibility for operating and further developing our Microsoft 365-based services and email infrastructure.
- You ensure that our communications platform is operated reliably, securely, and efficiently—both in the cloud and on-premises.
- You administer, operate, and continuously develop our hybrid mail systems (Exchange On-Premises & Exchange Online).
- You design and optimize mail flows, routing, and transport processes to ensure reliable and efficient communications operations.
- You analyze technical requirements in an enterprise environment and implement them effectively.
- You will further develop our Microsoft 365 platform in conjunction with existing infrastructures, and assess and enable the use of new technologies within the Microsoft 365 environment.
- You advise business units on selecting and using modern communication and collaboration solutions.
- You identify opportunities to optimize existing systems and processes and implement the corresponding improvements.
Our expectations of you
Qualifications
- At the same time, you have a deep understanding of traditional email infrastructures and know how they work in modern platforms.
- You haven’t just “worked with Exchange Online”—you also understand the underlying concepts, from SMTP, DNS, SPF, DKIM, and DMARC to mail flow, DNS, and hybrid scenarios.
- You have a solid understanding of mail flow, mail routing, DNS, MX records, email authentication (SPF, DKIM, DMARC), and hybrid mail architectures.
- You have a structured, analytical, and self-reliant approach to work.
- You are able to understand, assess, and sustainably improve complex technical relationships.
Experience
- You have a broad range of expertise and extensive experience in the Microsoft 365 environment.
- You have in-depth knowledge of operating Exchange Online and experience with Exchange On-Premises.
- You have experience with mail relay scenarios and internal as well as external delivery mechanisms.
- You have experience designing and implementing solutions in an enterprise environment.
What we offer
- Excellent career prospects and attractive benefits.
- Our teams are the foundation of our company's success.
- As an employer, we offer you not only a secure job, but also a future filled with diverse responsibilities and exciting projects.
- Our company culture: You can expect flat hierarchies, comprehensive transparency, and efficient decision-making processes.
- Individual development opportunities: Benefit from a wide range of training courses, e-learning programs, and internal networks that support both your personal and professional development.
- Benefits and additional perks: Take advantage of discounts on our products, Corporate Benefits, the option of a JobRad, capital-forming benefits, company pension scheme, discounted Deutschlandticket, sports activities, and many other benefits.
- Attractive working conditions: Centrally located offices, flexible trust-based working hours, and the option to work remotely up to two days per week.
- Signing the Diversity Charter: We are actively committed to promoting diversity within our company.
Benefits
Work-Life-Integration
Health, fitness & fun
Food & drink
Topics you will work on
Job locations
About your employer
As the leading provider of communication solutions in Germany, we offer our users a safe and reliable way to communicate with our strong brands: 1&1, GMX, WEB.DE, and mail.com—despite handling 500 million incoming emails every day!
- Established Company
- Onsite, Hybrid, Full Remote
- Internet, IT, Telecommunication
Employer reviews
- Career growth
- 3.2
- Engineering
- 3.4
- Working conditions
- 3.8
- Team culture
- 3.3
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