Senior Data Engineer (m/f/d)

Your Mission

• Customer Identity & Data Integration: Build and maintain unified customer identity models across momox businesses (Books & Media, Fashion, etc.), ensuring consistent use of data for analytics and reporting
• Data Pipelines & Event Processing: Design, build, and optimize batch and streaming pipelines, leveraging Pub/Sub and BigQuery for real-time data flows
• Operational & Logistics Data: Develop metrics and pipelines that support warehouse efficiency
• ETL/ELT Development: Create and optimize robust data transformations, ensuring scalability, automation and reliability
• Performance & Observability: Monitor pipeline SLAs, improve performance through multiprocessing/event-driven workloads and implement automated data quality checks
• Collaboration & Ownership: Translate business requirements into technical solutions, collaborate with analysts and product teams and mentor junior engineers
• Best Practices & Strategy: Define data engineering standards, promote automation and efficiency and contribute to long-term architectural decisions

Our Tech Stack

• Data & Processing: GCP, BigQuery, Pub/Sub, Airflow, dbt
• Infrastructure: Kubernetes, Cloud Run
• Programming: Python (ETL/ELT, APIs, event processing, automation)
• Security & Cost Optimization: IAM, encryption, slot reservation, Policy Tags
• Versioning & CI/CD: GitLab CI, Terraform

Your Profile

• At least 5 years of proven experience as a Data Engineer or in a similar role (e.g., Data Warehouse Engineer, BI Engineer with strong data focus)
• Proven experience building scalable data pipelines (batch and streaming) in production environments
• Hands-on expertise with BigQuery (optimization, cost-efficient design, partitioning, clustering) and broader GCP ecosystem experience
• Platform and app deployments on Kubernetes (Airflow, Helm Chart, ArgoCD, Terraform)
• Strong skills in Pub/Sub and event-driven architectures (Eventarc, Cloud Run)
• Proficiency in Python for ETL/ELT development, APIs and automation
• Strong Airflow experience for workflow orchestration and dbt proficiency with dimensional modeling expertise
• Experience with data quality frameworks, automated testing and performance monitoring with observability practices
• Background in e-commerce, retail or multi-product environments with complex data integration needs
• Strong communication skills, collaborative mindset, and experience mentoring junior engineers and working with analytics teams

You Can Look Forward To

• Flexible working hours: We work according to a hybrid model that offers you maximum flexibility while also fostering important personal connections. Whether in our centrally located office or working remotely - you and your team decide together where and when you want to work. You can arrange your working hours flexibly. For personal interaction, your team meets at least 20 days per quarter in the office, as our team days are held in person.
• Training: momox is only as good as you. That's why you will find room and budget for your individual professional development with language classes, internal training, conferences, (online) courses and more.
• Office dogs: Our office dogs contribute to a relaxed work atmosphere and are always happy to receive some extra cuddles.
• 1/2 day off on your birthday: Celebrate your birthday with half a day of vacation! Come in later, leave earlier, or simply take an additional half day off to have your entire birthday free – provided your birthday falls on a regular working day. Additionally, you get half a day off on December 24th and 31st.
• Reduced ticket for the public transport: Save real money with the Germany or Job Ticket for the Berlin S-Bahn.
• Team events: Having fun at work and celebrating our successes together are core to our values. That’s why we regularly come together at various events to connect, get to know each other better, and strengthen our team spirit.
• Company discounts: As a momoxian, you can look forward to a monthly voucher for our momox Fashion online shop, as well as medimops. Additionally, you benefit from numerous company discounts from our partners.
• Sustainability: We love second-hand and incorporate our sustainable business idea into the office routine with simple methods like using eco-friendly supplies, double-sided printing, energy-saving modes on devices, waste separation, etc. In doing so, we take responsibility and integrate sustainability into all our activities.
• Sport and fitness offers: During the week, you have the opportunity to take part in various sports activities. Whether it's online training, massages, or stretching at your desk – there's something for everyone. You can also get a discounted membership for Urban Sports Club or Wellhub.
• Individual work environment: Design your ergonomic workspace just the way you like it – with height-adjustable desks and the laptop of your choice (MacBook or ThinkPad). If things get a bit noisy in the office, your Bose noise-cancelling headphones ensure uninterrupted focus. If needed, we can also provide you with an ergonomic chair or additional monitors for your home office.