Posted 3d ago

Intern Integration Engineer (f/m/d)

@ Axpo
Madrid, /, Spain
HybridInternship
Responsibilities:learn MuleSoft, support APIs, document maintenance
Requirements Summary:Pursuing or recently completed engineering degree; Java proficiency; knowledge of REST APIs; eager to learn and collaborate; fluent in English.
Technical Tools Mentioned:Java, MuleSoft, REST APIs, Documentation, Testing
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Job Description

Join Axpo, Switzerland's largest producer of renewable energy and a global leader in energy trading, to kickstart your career in IT integration. Gain hands-on experience with cutting-edge tools and contribute to innovative projects in a dynamic, supportive team environment.

What you will do:

  • Learn and develop expertise in MuleSoft integration tools

  • Support basic API development tasks

  • Assist in creating and maintaining documentation

  • Participate in testing processes and quality assurance

What you bring & who you are:

  • Currently pursuing or recently completed an engineering degree

  • Proficiency in Java (mandatory); knowledge of REST APIs is a plus

  • Eagerness to learn and collaborate with team members

  • Reliable, detail-oriented, and responsive

  • Strong communication and interpersonal skills

  • Fluent in English; German or other European languages are a plus

About the team:
You’ll join Axpo-CKW’s Integration team, a close-knit group of six professionals passionate about innovation and growth. We value collaboration, mentorship, and creating opportunities for learning. Together, we aim to achieve a win-win by supporting your development while advancing our projects.



At Axpo Group, we are dedicated to fostering a culture of non-discrimination, tolerance, and inclusion. As an equal opportunity employer, we welcome applications regardless of race and ethnicity, gender identity and expression, sexual orientation, age, disability, as well as socioeconomic, cultural, and religious background. We are committed to ensuring a respectful and inclusive recruiting process and workplace for everyone.