Skip to content

Fullstack Software Developer (f/m/d)

RemoteKöln oder Paderborn, Nordrhein-Westfalen, GermanyResearch


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 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.


Your responsibilities
  • Development of our web-based research platform for labelling of language data and quality assessment of translations
  • Designing new solutions that can scale with our growing infrastructure and staff, as well as new requirements and new languages
  • You work closely with our research team and language experts to create the tools we need to explore new research ideas and continuously improve the linguistic quality of our translations
  • You build both frontends and backends for various web applications

What we offer

  • Interesting and challenging software development work on a product that is already used by over 100 million people
  • Code reviews and a focus on high quality
  • 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, no strings attached, no 'to be reviewed'- DeepL is a remote-positive company now and forever
  • Regular innovative team-building events- internationally!

About you

  • At least 1 year of professional experience in full-stack development (at university or in the private sector)
  • Good knowledge of web and JavaScript/front-end technologies (HTML, CSS, JS, ideally TypeScript)
  • Experience in working with modern JS frameworks, e.g. React
  • Good knowledge of backend development, e.g. with Python or Node.js, and in dealing with backend frameworks, e.g. FastAPI or Nest.js
  • Experience with relational databases (SQL)
  • You are comfortable with Linux environments and have already had contact with Docker and ideally with Kubernetes.
  • You enjoy solving difficult problems
  • A lot of interest in new things, for example new frameworks, programming languages...
  • Experience and a lot of initiative in programming various projects
  • Fluent in English