Full Stack Developer (m/f/d)

Full Stack Developer (m/f/d)

Focus Backend • Typescript • NodeJS • GraphQL • REST • gRPC • Websockets • Cloud • PaaS • CaaS

We have technically very demanding projects and need you. 

What is your task?

  • You improve our existing software platforms and implement new features in both the backend and frontend.

  • You develop completely new software platforms for our customers from scratch.

  • You develop technical interfaces that other platforms or clients can use for integration.

  • You develop interfaces used in back-office processes.

  • You are involved in creating proof of concepts and technical spikes.

  • You collaborate with our solution architect to design the technical roadmap and architecture of our platforms.

  • You work with our designers, developers, business analysts, and delivery leads in agile teams.

What do we expect from you?

  • You have at least 5 years of experience in creating backend systems.

  • You have at least 2 years of experience in creating frontend systems.

  • You are very proficient in backend technologies like Typescript or NodeJS.

  • You can quickly familiarize yourself with new backend technologies and be productive.

  • You master frontend technologies like React or Angular and have experience with HTML, CSS, and JavaScript in the browser.

  • You can design and implement interfaces for platforms in GraphQL, REST, gRPC, or WebSockets very well.

  • You are very knowledgeable about the basic infrastructure of public clouds, such as those for messaging, storage, auth, and containers.

  • You are familiar with CI/CD pipelines and best practices in DevOps and could set these up as well.

  • You have extensive experience with document and SQL databases and can create a sustainable data design for complex systems.

  • You are familiar with the use of ML methods in platforms and can develop more complex algorithms in Python or notebooks.

  • You are willing to continuously learn new technologies and platforms and to get certified in them.

  • You possess excellent analytical skills and can clearly explain your software design proposals to others.

  • You are proactive in projects and can deliver consistent and self-organized results even under time pressure. You are very familiar with JIRA.

  • You have a very high standard for the quality of your work and ensure this through developer tests and automated integration tests.

  • You can communicate in English and German at C1 level and maintain friendly and direct communication.

It is important to us that you have a solid IT background, are open-minded, and are willing to learn new technologies and approaches in an agile environment in our industry.

What do we offer?

  • We pay above average.

  • We place a high value on personal development.

  • We promote certifications and further training.

  • We offer a very good bonus system.

  • We provide a permanent position with 30 days of vacation plus an additional 5 free "Don’t ask, Don’t tell" days.

  • You can mostly work remotely.

  • We create an environment where you can thrive and reach your full potential.

  • You can work in our company hubs in the Netherlands, Germany, or Serbia.

Interest?

Interest?

"Do you have questions or would you like to apply? Write to me here or at join@3flows.com. Send me a brief self-assessment and any questions you have. We can quickly start with the first interview."

Marina

Office

"Do you have questions or would you like to apply? Write to me here or at join@3flows.com. Send me a brief self-assessment and any questions you have. We can quickly start with the first interview."

Marina

Office

© 2025

All rights reserved

Mailing address:

3flows GmbH

Echternacher Str. 23

50933 Cologne

Hub • Cologne • 🇩🇪

3flows GmbH

Butzweilerallee 3

50829 Cologne

Hub • Austin • 🇺🇸

3flows US LLC

8000 Centre Park Drive Suite 130

Austin, TX 78754

Email info(at)3flows.com

Phone +49 (0) 221 677887910

Fax +49 (0) 221 677887919

District Court of Cologne (HRB 114346)

Managing Director: Kristijan Cvetkovic

Tax Number: 223/5804/9936

VAT ID No.: DE362955775

© 2025

All rights reserved

Mailing address:

3flows GmbH

Echternacher Str. 23

50933 Cologne

Hub • Cologne • 🇩🇪

3flows GmbH

Butzweilerallee 3

50829 Cologne

Hub • Austin • 🇺🇸

3flows US LLC

8000 Centre Park Drive Suite 130

Austin, TX 78754

Email info(at)3flows.com

Phone +49 (0) 221 677887910

Fax +49 (0) 221 677887919

District Court of Cologne (HRB 114346)

Managing Director: Kristijan Cvetkovic

Tax Number: 223/5804/9936

VAT ID No.: DE362955775