Senior Backend Engineer (m/f/d)

  • Standard
  • Presence / Mobile
  • Work experience
  • Senior, very experienced
  • IT
  • Fulltime
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With brands such as Cornelsen, Duden, Cornelsen eCademy & inside, Cornelsen Experimenta, Veritas and Verlag an der Ruhr, the Cornelsen Group, headquartered in Berlin, has been one of the leading providers in the German-language education market for more than 75 years. With over 1,600 employees, we develop innovative cross-media educational solutions from early childhood to adult and professional life. Together, we are shaping the education of tomorrow and making a meaningful contribution in an environment with high social relevance.
With us, you can make a difference and realise your potential. Become part of our team!
We are looking for a full-time permanent Senior Backend Engineer (m/f/d) Python for the EdTech Engineering department in Berlin as soon as possible.

Your tasks

  • In collaboration with your Scrum team, you develop and automate business and AI processes with Python  
  • You create new microservices with state-of-the-art frameworks such as FastAPI  
  • You optimize performance through concurrent programming and application profiling 
  • Working closely with our AI engineers to develop solutions for existing business problems  
  • Together with a multidisciplinary team, you will work in an iterative and self-organized manner 
  • You will take part in a wide range of projects and familiarize yourself with new technologies in this context  

Your profile

  • You have sound experience with Python in complex software projects 
  • You are experienced in operating and developing applications in production environments with Python, REST services and frameworks such as FastAPI, Flask or Django 
  • You have a strong understanding of best practices in software development 
  • You have already gained experience with various database technologies, including ORM and database migrations, and have knowledge of working with large data sets and data pipelines 
  • You are familiar with CI/CD pipelines (GitLab), Docker and Kubernetes 
  • You are confident in dealing with common cloud providers such as AWS, Azure or OTC 
  • Ideally, you have some experience with integrating machine learning libraries into backend services and can design and implement modules that can be integrated into larger applications 
  • Initial contact with vector databases such as Pinecone, Milvus, pgvector or Elasticsearch is also an advantage, but not a must-have

Our offer

  • Contribute to the education of tomorrow in a meaningful environment
  • Flexible working hours and 30 days' vacation
  • Mobile working by arrangement up to 4 days/week - also possible in the European Economic Area (EEA) up to 20 days/year
  • Attractive benefits such as daycare and after-school care allowance, reduced Germany ticket as a job ticket, company pension scheme and capital-forming benefits
  • Possibility of company bike leasing via salary conversion
  • Organic regional lunch in the in-house canteen
  • Discounts on books, music and toys
  • Agile collaboration in dynamic and cross-functional teams
  • Space to develop and test new ideas
  • Personal and professional development opportunities through participation in further training, specialist conferences, e-learning and internal exchange and networking formats
  • Joint sporting events, team events and celebrations

Cornelsen is committed to equal opportunities, diversity and inclusion in the workplace. We prevent discrimination and harassment of any kind based on gender, skin color, religion, sexual orientation, origin, disability, gender identity or other protected characteristics.
You will only find genuine Cornelsians on our careers page! We are not yet as diverse as we would like to be, but D&I is very important to us.


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Apply online today. We look forward to receiving your application!

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