INTERNSHIP DETAILS

Intern Integration Engineer (f/m/d)

CompanyAxpo Group
LocationMadrid
Work ModeOn Site
PostedMay 12, 2026
Internship Information
Core Responsibilities
The intern will learn MuleSoft integration tools and support basic API development tasks. They will also assist in creating documentation and participating in testing and quality assurance processes.
Internship Type
intern
Company Size
4968
Visa Sponsorship
No
Language
English
Working Hours
40 hours
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About The Company
Axpo is driven by a single purpose – to enable a sustainable future through innovative energy solutions. Axpo is Switzerland's largest energy producer and an international leader in energy trading and the marketing of solar and wind power. Axpo combines the experience and expertise of more than 7,500 employees who are driven by a passion for innovation, collaboration and impactful change. Using cutting-edge technologies, Axpo innovates to meet the evolving needs of its customers in over 30 countries across Europe, North America and Asia. Around 7,500 employees work for Axpo in 150 different roles – this means a wide range of job entry and career opportunities for you. Bring along your knowledge, your enthusiasm and your dedication – and take charge. Visit our career website: www.axpo.com/career
About the Role

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.

Key Skills
MuleSoftJavaREST APIsAPI DevelopmentDocumentationQuality AssuranceTestingCommunication
Categories
TechnologySoftwareEngineeringEnergy