Logo 1&1 Internet AG

System administrator - focus on internal mail system & Microsoft 365

Job

  • Level
    Experienced
  • Location
    Karlsruhe
  • Working Model
    Hybrid, Onsite
  • Job Field
    IT, System
  • Employment Type
    Full Time
  • Contract Type
    Permanent employment

Job Summary

In this role, you will administer the hybrid mail system, optimize mail flows, and further develop Microsoft 365 services to ensure a secure and high-performance communication infrastructure.

Job Technologies

Your role in the team

  • Our team is responsible for a central communication and collaboration platform with a strong focus on Microsoft 365, ensuring the stable, secure, and high-performance operation of mission-critical services. In this role, you will take on a central responsibility for the operation and further development of our Microsoft 365-based services and our mail infrastructure. You will ensure that our communication platform is operated in a stable, secure, and high-performance manner — both in the cloud and on-premises.
  • You continuously administer, operate, and develop our hybrid mail systems (Exchange On-Premises & Exchange Online).
  • They design and optimize mail flows, routing, and transport processes for reliable and efficient communication operations.
  • They analyze technical requirements in the enterprise environment and implement them accordingly.
  • You further develop our Microsoft 365 platform in conjunction with existing infrastructures and evaluate as well as enable the use of new technologies within the Microsoft 365 environment.
  • They advise departments on the selection and use of modern communication and collaboration solutions.
  • They identify optimization potentials in existing systems and processes and implement corresponding improvement measures.

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Our expectations of you

Qualifications

  • You have a solid understanding of mail flow, mail routing, DNS, MX records, as well as email authentication (SPF, DKIM, DMARC) and hybrid mail architectures.
  • They are characterized by a structured, analytical, and self-responsible way of working.
  • You are capable of understanding, evaluating, and sustainably improving complex technical contexts.

Experience

  • You have a broad technical background and extensive experience in the Microsoft 365 environment. At the same time, you possess a deep understanding of traditional mail infrastructures and know how they operate within modern platforms. You haven't just worked with 'Exchange Online', but also understand the underlying connections - from SMTP, DNS, SPF, DKIM, and DMARC to Mailflow and DNS, as well as hybrid scenarios.
  • You possess in-depth knowledge of operating Exchange Online and have experience with Exchange On-Premises.
  • You have experience with mail relay scenarios and internal as well as external delivery mechanisms.
  • You have experience in designing and implementing solutions in an enterprise environment.

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What we offer

  • 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 with diverse tasks and exciting projects.
  • You can expect flat hierarchies, comprehensive transparency, and efficient decision-making processes.
  • Benefit from a wide range of training programs, e-learnings, and internal networks that promote both your personal and professional development.
  • Take advantage of discounts on our products, corporate benefits, the option of a JobRad, asset-building benefits, company pension schemes, discounted Germany ticket, sports offers, and many other benefits.
  • centrally located offices, flexibility through trust-based working hours, and the possibility to work remotely up to two days per week.
  • We actively promote diversity within our company.

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Benefits

Health, Fitness & Fun

Work-Life-Integration

Food & Drink

Topics You Will Work On

Job Locations

  • Location Karlsruhe

    Baden-Württemberg

    Germany

About Your Employer

1&1 Internet AG

1&1 Internet AG

With our strong brands 1&1, GMX, WEB.DE and mail.com, we are the leading provider of consumer applications in Germany with over 30 million active users. We make communication even safer - with up to 500 million incoming e-mails per day! With our advanced security facilities, we ensure that your data is always protected. So you can relax and concentrate on the really important things.

Description

  • Company Size
    250+ Employees
  • Company Type
    Established Company
  • Working Model
    Full Remote, Hybrid, Onsite
  • Industry
    Internet, IT, Telecommunication

Employer reviews

by devworkplaces.com

Total

(1 Review)
3.5
  • Career Growth

    3.4
  • Workingconditions

    4.4
  • Engineering

    2.7
  • Culture

    3.5
Show all reviews
Logo 1&1 Internet AG

System administrator - focus on internal mail system & Microsoft 365

Location
Karlsruhe
Working Model
Hybrid, Onsite
Diversity
Open for all genders

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