About Us

With our strong brands GMX, WEB.DE and mail.com and over 42 million active users, we are the leading email and communications platform in Germany, Austria and Switzerland. From this strong market position, services and apps are developed that simplify users' digital lives - from office tools and cloud solutions to personal ID management.

Your Tasks

Defend the email, cloud storage, and identity services of GMX, Web.de and mail.com - platforms millions of users rely on every day. Join a team tackling around-the-clock attacks, analyzing massive datasets, and building pipelines that stop account hijackers.

If you thrive at the intersection of software engineering and big data, this is your mission: Build systems that protect digital identities at a global scale - ensuring trust, resilience, and security for millions of users.

Your Tasks:

• Develop, test, deploy, and monitor scalable filter pipelines and transformation processes that extract relevant metrics and features from billions of events.
• Data management in a Data Lake.
• Collaborate with data scientists and software developers to optimize and scale high-performance ML models.
• Ensure the quality and reliability of developed solutions through continuous monitoring and performance analysis.

Your Profile

• Several years of experience as a backend software developer, with excellent Python programming skills.
• Degree in computer science, mathematics, statistics, or comparable professional experience.
• Expertise in handling large datasets and distributed systems as well as experience with PySpark, SQL/Trino, NumPy.
• Experience with Gitlab pipelines, Dagster and Kubernetes, monitoring systems like Grafana and Prometheus are a plus.

Our Benefits

Lived corporate culture: Flat hierarchies, a culture of respect and appreciation, signatories of the Diversity Charter, open communication and no dress code

Wide range of further training: Internal and external training opportunities, LinkedIn Learning, language courses, talent development programs, conferences and mentoring

TEC-Campus: Free choice between Linux, Mac, or Windows, slack days, conferences, lecture series, courses, open-source projects, community meetups and user groups

Active health care: Wellpass, free internal sports and fitness classes, health days, family & care support services, discounts at fitness centers, mental health first responder, fresh fruit and drinks for free

Mobility: Subsidy for job bike leasing, job ticket and relocation service if you live outside Germany

Flexible working models: Home office options, flexible working hours and 30 days of vacation with the option for additional unpaid leave

Financial benefits: Corporate benefits, company pension scheme, capital-forming benefits, occupational disability insurance and various partner discounts

Events: Summer and winter parties, sports tournaments and team events