Technical Writer / Documentation Engineer (f/m/d)

ecosio is a fast-growing, innovative service company and a leading provider of B2B integration, specialising in electronic data interchange (EDI), Web EDI and e-invoicing. ecosio is part of Vertex, Inc., a leading global provider of indirect tax solutions listed on Nasdaq (VERX).

Our brand slogan is Connections That Work as we believe strong connections are central to successful business relationships - both external and internal. At ecosio, we hire individuals from all backgrounds and are committed to creating an inclusive work environment. We are technology lovers, set the highest standards for our solutions, and put innovative ideas first.

We are seeking a Technical Writer to join our growing product team at ecosio. This role combines deep technical expertise in API documentation with product knowledge to create clear, comprehensive knowledge docs for our B2B integration solutions. You will be responsible for developing and maintaining API reference documentation, tutorials, and integration guides on connect.ecosio.com. With you, we want to build the best-in-class API documentation platform for EDI & e-invoicing.

Part-time possible (min. 30hr/week). 

• Taking ownership of connect.ecosio.com our knowledge hub for partners, customers & users
• Creating and maintaining API specifications and reference documentation
• Designing and implementing documentation-as-code workflows using tools like Git, YAML, and Markdown
• Developing interactive API documentation with modern documentation tools
• Writing clear, technically accurate product guides, tutorials, and code samples
• Collaborating with product, marketing and engineering teams to understand API design and implementation details
• Establishing documentation standards and style guides for API documentation
• Implementing automated documentation testing and validation processes

• Experience in technical writing and documentation for APIs and products (2+ years)
• Proficiency with API tooling specification and related tools
• Strong knowledge of YAML, JSON, and Markdown
• Experience with version control systems (Git) and documentation-as-code practices
• Familiarity with REST APIs, HTTP protocols, and web services
• Excellent written and verbal communication skills - Native English
• Experience with developer portals and API documentation platforms
  
  

• Computer Science studies or technical background
• Knowledge of B2B software, EDI concepts, or integration patterns
• Experience with API documentation
• Understanding of CI/CD workflows and documentation automation
  
  

By connecting with us you will experience...

• Our remote-first culture lets you work remotely from one of our designated countries
• Flexible working hours to suit your schedule and priorities
• Annual personal development budget to invest in conferences, courses, or career coaching
• Home office allowance to create a workspace that fits your needs
• Regular events and trips to connect, celebrate, and have fun with the team
• Workations of up to 90 days per year within the EU, combining travel and productivity
• Wellbeing support, including mental health resources and employee assistance programs
• Additional country-specific benefits based on your location

Sounds like a connection that works? Then apply now and we will get in touch soon!

As part of our hiring process at ecosio, we conduct standard background checks. You can find more information about them by clicking HERE.

Our mission is to build Connections That Work by fostering a diverse and inclusive team. We are committed to making everyone feel valued and empowered to contribute their unique skills, experiences and perspectives. And now we want to connect with you.