Software Developer - Accounting Systems C# (f/m/d) - UK, NL, GER or PL


is Germany's best-known AI company. We develop neural networks to help people work with language. With DeepL Translator, we have created the world's best machine translation system and made it available to everyone free of charge. Over the next few years, we aim to make DeepL the world's leading language technology company.

Our goal is to overcome language barriers and bring cultures closer together.

What else distinguishes us from other companies?

DeepL (formerly Linguee) was founded by developers and researchers. We focus on the development of new, exciting products, which is why we spend a lot of time actively researching the latest trends and technologies. We understand the challenges of developing new products and try to meet them with an agile and dynamic way of working. Our open and positive workplace philosophy enables employees to feel comfortable and thrive in their roles. In our daily work we use modern technologies - not only to translate texts, but also to create the world's best dictionaries, and solve other language-related problems.

When we tell people about DeepL as an employer, reactions are overwhelmingly positive. Maybe it's because they have enjoyed our services, or maybe they just want to get on board with our quest to break down language barriers and facilitate communication.

What will you be doing at DeepL?

Thanks to our unique neural networks, DeepL is able to deliver the world’s best translation quality. In order to keep it that way, we are constantly improving our apps and adding exciting new features - and this is where your experience in developing sophisticated software comes in.

You will be developing C# .NET backend services for our Payments infrastructure for DeepL Pro, a highly successful product that we are constantly introducing to new audiences, new markets and new countries. You will join a highly motivated team that values easy to maintain and efficient code, with responsibility not only for working on your part of the codebase, but for mentoring others. Important design decisions are made by the whole team in open discussions.


Your responsibilities

  • You design and implement reliable, scalable and efficient C# backend services as part of DeepL's payment system
  • You contribute to monitoring and debugging the services in production, e.g. by defining expressive metrics and ensuring informative logs
  • You collaborate across teams to define shared interfaces and to ensure smooth operation in production
  • You support other team members in the development of their C# skills and serve as a knowledge resource within the team for this tool

What we offer

  • Interesting problems and programming at the highest level
  • A small, effective, and extremely good team. In our company, the decision makers are developers themselves
  • Working on products that are already used by more than 100 million people
  • Meaningful work at scale: We break down language barriers worldwide and bring different cultures closer together
  • Experience the excitement of a rapidly growing scale-up! Over the last year we doubled in size, hiring new colleagues across UK, Germany, Poland, NL and Japan
  • We’ve got your back! We are an experienced, highly committed team with transparent decision-making processes. We cherish collaboration and efficiency, but trust, empathy, inclusivity and an overall ‘human-first’ approach are just as important to us
  • Flexible Work Arrangements: with office hubs in Cologne, Berlin, London, and Amsterdam, you choose where and how you work. We offer fully remote work from UK/DE/NL/PL/JP, no strings attached, no 'to be reviewed'- DeepL is a remote-positive company now and forever
  • Regular innovative team-building events- internationally!

About you

  • Very good knowledge in C# and several years of programming experience in backend development
  • Good SQL and database knowledge (preferably PostgreSQL)
  • Experience in the integration and provision of web-based APIs such as gRPC and JSON-RPC
  • Knowledge in Docker, Kubernetes, Kafka or Python is an advantage
  • Experience in web technologies like React is an additional advantage
  • It is advantageous if you have experience in the programming of billing systems and the integration of external payment service providers
  • Enjoyment of solving even difficult problems
  • A strong interest in learning new things, for example new programming languages, new APIs, new technologies...
  • Good knowledge of English, knowledge of other languages, especially German, is advantageous

We are looking forward to your application!