Intrexx Application Engineer

About Atos Group

Atos Group is a global leader in digital transformation with c. 63,000 employees and annual revenue of c. €8 billion, operating in 61 countries under two brands — Atos for services and Eviden for products. European number one in cybersecurity, cloud and high performance computing, Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered, end-to-end solutions for all industries. Atos Group is the brand under which Atos SE (Societas Europaea) operates. Atos SE is listed on Euronext Paris.

The purpose of Atos Group is to help design the future of the information space. Its expertise and services support the development of knowledge, education and research in a multicultural approach and contribute to the development of scientific and technological excellence. Across the world, the Group enables its customers and employees, and members of societies at large to live, work and develop sustainably, in a safe and secure information space.

We are looking for an Intrexx  Application Engineer to support, maintain, and further develop business applications built on the Intrexx low‑code platform. This role is a maintenance-oriented developer position, combining application support with hands-on development, including change requests, bug fixing, and functional enhancements.

The position is well suited for a professional who is comfortable working in production environments, understands business-critical applications, and is able to implement changes directly within Intrexx using low-code and scripting technologies.

Key Responsibilities

• Provide L2 application support for Intrexx-based business applications


• Analyze, troubleshoot, and resolve application incidents and problems


• Perform bug fixing and root cause analysis in productive environments


• Implement Change Requests and functional enhancements in existing applications


• Participate in application development and extension using the Intrexx 12 platform


• Support release, deployment, and change processes across environments (DEV / TEST / PROD)


• Collaborate with service managers, architects, and infrastructure teams


• Ensure application stability, performance, and SLA compliance


• Maintain and update technical documentation related to implemented changes

Required Skills & Experience

• Proven hands-on experience with the Intrexx 12 platform (Portalmanager 12.0.x/12.1.x, application configuration, customization)


• Development experience in a low‑code or application support context


• Practical knowledge of JavaScript, Groovy, Velocity


• Experience with application maintenance, change implementation, and bug fixing


• Experience providing L2 support for business-critical applications


• Understanding of web application architectures and production environments


• Ability to work independently on analysis and implementation tasks


• German language skills at minimum B2 level (required)


• Good command of English (spoken and written)

Nice to Have

• Experience with ITIL / Application Management processes


• Knowledge of Linux-based environments and application servers (Tomcat, NGINX)


• Familiarity with container platforms (e.g. OpenShift)


• Experience with integrations (Active Directory, REST APIs)


• Experience working in public sector or enterprise environments


• Basic knowledge of monitoring and logging tools

What’s in it for you? 

• Wellbeing programs & work-life balance - integration and passion-sharing events


• Private medical and dental care


• Benefits platform – shopping, cinema, sport etc.


• Co-funding of sports activities, e.g. Multisport & OK system cards, b-active program


• Courses and certifications e.g. Google Cloud, AWS, ITIL


• Conferences and Expert Communities


• Gift packages for special occasions: Easter, Christmas, Children’s Day


• Appreciation for seniority: additional days off, Atos Jubilee gifts


• Hybrid working mode (max. 2 times per month based on a location)


• Charity and eco initiatives

What happens next?

• Quick conversation with HR


• Interview with a Manager/IT expert/project representative

Here at Atos, diversity and inclusion are embedded in our DNA. Read more about our commitment to a fair work environment for all.

Atos is a recognized leader in its industry across Environment, Social and Governance (ESG) criteria. Find out more on our CSR commitment. 

Choose your future. Choose Atos.