Service Engineer (m/f/d)

Become Service Engineer (m/f/d) at Retarus.

Retarus is a worldwide provider of cloud-based messaging solutions at enterprise scale. We serve over 40% of the companies listed on the S&P Global 100, e.g. Adidas, Bayer, SAP, BNP Paribas, Goldman Sachs, T-Systems, Swarovski & UPS, as well as governmental agencies and major players in markets across the world. Privately owned and founder-managed for over thirty years, Retarus is customer-oriented, stable, a fair employer, and a strategic business partner with a long-term vision. With some 500 employees in 19 offices on four continents, Retarus operates locally and thinks globally: our teams are organized across borders and are highly integrated. This makes Retarus a multicultural, multilingual, and engaging workplace. We are committed to creating a diverse and dynamic environment for our employees, with generous compensation, time off, and a global, collaborative workplace.

What we offer

• Mobile working and flexible working time
• Collaborative, diverse company culture and superior team spirit
• Flat hierarchies and great feedback culture
• Development opportunities & career perspective
• International business & cross-site collaboration
• Modern, dog-friendly offices with nice amenities
• Company-paid health insurance, public transportation, lunch vouchers and further benefits

What you´ll do

As a Service Engineer (EDI, E-Invoicing), you act as the primary technical contact for our existing customers, supporting stable operations and continuous improvement of their EDI and E-Invoicing environments.

With expertise in EDI standards and E-Invoicing frameworks, you ensure reliable and efficient operation of customer integrations - from incident resolution and change management through to optimization and ongoing service excellence.

Key Responsibilites:

• Acting as the main technical contact for customers across incidents, service requests, and change requests, ensuring stable and efficient operations
• Managing and supporting EDI and E-Invoicing integrations, including configuration, maintenance of mappings, workflows, and partner connections
• Analyzing, troubleshooting, and resolving integration issues while performing root cause analysis and ensuring sustainable fixes
• Supporting onboarding of new business partners, including setup, testing, and validation of message flows across EDI and E-Invoicing processes
• Working with EDI standards and protocols (e.g., EDIFACT, ANSI X12, XML, SAP IDoc, VDA, AS2, OFTP2, APIs) and E-Invoicing frameworks (e.g., Peppol, ZUGFeRD/XRechnung, FatturaPA)
• Monitoring production environments and driving improvements in stability, performance, automation, and operational efficiency
• Collaborating closely with internal teams (Product, Development, Infrastructure, Project Management) and ensuring proper documentation and knowledge sharing

What you'll need

• Completed apprenticeship or university degree in IT, Computer Science, Engineering, or a related field, or equivalent practical hands-on experience, with several years of experience in EDI, E-Invoicing, or B2B/system integration environments
• Strong knowledge of EDI standards (e.g., EDIFACT, XML, ANSI X12, VDA), communication protocols (e.g., AS2, OFTP2, SFTP, HTTPS, APIs, Webservices), and ERP/B2B integration systems (e.g., SAP IDoc, Oracle, Microsoft Dynamics)
• Good understanding of E-Invoicing frameworks (e.g., Peppol, ZUGFeRD, XRechnung, FatturaPA or similar) and related regulatory requirements
• Strong analytical, structured, and detail-oriented working style combined with high customer orientation, strong communication skills, and the ability to manage multiple priorities and projects in parallel
• Proactive, solution-oriented, and hands-on mindset with the ability to work independently, take ownership, and continuously develop expertise in EDI, E-Invoicing, and integration technologies
• Very good English skills (spoken and written); good German skills required for the Erfurt location; additional languages such as French, Spanish, or Italian are a plus

What you can expect

At Retarus, you will work on impactful and dynamic projects, with real opportunities to make a difference. Our customers are leaders across diverse industries, with constantly evolving needs and high expectations. You’ll be working with cutting-edge technology and great creative leeway to meet customers’ needs – and the projects you work on will be deployed globally. Working at Retarus, you will collaborate closely with convivial, culturally diverse teammates. You will grow professionally in a dynamic and exciting workplace and design impactful solutions in real time with top companies.

Very important

Come as you are. Retarus is committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or veteran status.

Apply via our online application portal – it’s easy and doesn’t take long. Our colleague Alissa Selman is happy to field any questions you may have: Alissa.Selman@retarus.de

We’re looking forward to getting to know you!