Full-Stack Software Engineer Trainee - Catman & Pricing

Your Profile

We're a product development team building internal applications and services using modern technologies. We work in a collaborative environment where continuous learning and mentorship are part of our daily routine.

Your mission

As a full-stack trainee, you'll join our team to learn and contribute to the development of our applications. You'll work on real projects with constant mentoring, gaining experience in backend, frontend, cloud, DevOps and data technologies. Your goal will be to grow into a junior software engineer position.

Key responsibilities

• Full-stack development: Contribute to backend services (Node.js/NestJS), frontend applications (React), and database tasks including queries, data validation, and basic performance optimization across MongoDB, PostgreSQL, and BigQuery


• Testing & quality: Write and maintain tests to increase coverage and improve code quality


• Documentation: Create and maintain technical documentation for features, processes, and system components


• Technical collaboration: Participate in code reviews, agile ceremonies, and team technical discussions


• Automation: Support automation initiatives, productivity tools, and process improvements


• Operations: Assist with DevOps tasks like deployments, Docker configurations, and CI/CD pipelines

What we’re looking for

Technical requirements

• Degree or final-year studies in Computer Science, Software Engineering, Telecommunications Engineering, or a related technical field


• Available 20 to 30 hours per week.


• Basic knowledge of software development principles


• Basic experience with at least one modern programming language, ideally JavaScript or TypeScript (Academic or personal project)


• Fundamental knowledge of web development (APIs, HTTP, databases)


• Basic understanding of Git and version control

Soft skills

• Eagerness to learn and receive constructive feedback


• Proactive attitude and technical curiosity


• Strong communication and teamwork skills


• Ability to ask for help when needed


• Structured thinking and attention to detail


• Business-minded approach - interest in understanding the product context beyond just the code


• Ownership mentality

Nice to have

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  • Experience with Node.js, NestJS, React, or GraphQL
  
  
  • Database experience (MongoDB, PostgreSQL) or data analytics tools (BigQuery)
  
  
  • Knowledge of Docker, CI/CD, or testing frameworks
  
  
  • Familiarity with cloud technologies (Kubernetes, Terraform, Google Cloud Platform)
  
  
  • Familiarity with Agile environments
  
  
  • Interest in automation, AI-assisted development, software quality, or developer productivity
  
  
  • Personal or open-source projects you can share
  
  
  • English proficiency for reading technical documentation and collaborating in an international context
  
  
  
  

About Us

MediaMarktSaturn is Europe’s leading consumer electronics retailer. It sees itself as a partner, daily companion and navigator for its customers in the digital world. Its over 1,000 MediaMarkt and Saturn stores are closely integrated with their online shops. MediaMarktSaturn has a total headcount of more than 60,000.

MediaMarktSaturn Technology is working on making Europe's number one consumer electronics retailer the technology leader in its sector. To this end, several hundred developers, UX designers and system architects using state-of-the-art technology work hand in hand with business owners in agile teams to develop customer-focused technology solutions for more than 6 million customers every day in 11 countries.

Technology Hub located in Barcelona, is one of the service units of MediaMarktSaturn Technology to deliver adequate staffing and engineering skills for the agreed deliveries of the global deployment plan for the entire group. 

(*) Diversity and equal opportunities are important to us. Research shows that women and people from underrepresented groups are less likely to apply if they don’t meet all the criteria. If you are interested in this position but your experience doesn’t align perfectly with every requirement, we still encourage you to apply. 

Additional Benefits

• Accelerated learning within an experienced senior team


• Personalized mentoring and continuous feedback


• Real exposure to production systems and modern technologies


• Collaborative environment where your ideas and contributions are valued


• You'll be working with the most cutting-edge technological stack of the moment


• Young environment, where not everything is written in stone, and where you are expected to contribute and co-create the culture of the Tech Hub and international collaboration model


• Flexible working time and possibility to combine home office  / presential working. Intensive workday every Friday and during summer


• The possibility to choose between 2 offices: The first one is the MediaMarkt Iberia HQ with a very attractive menu at a price. You'll eat for less than €4! And the second office is located at Pier01, in Barceloneta, right in the center of Barcelona.


• Free coffee and free fruit once a week

Job Infos

​Location: Barcelona, El Prat De Llobregat

Media Markt Saturn Th Services Barcelona

Department: HQ - IT

Entrylevel: Students

Type of Employement: Part Time

Working Hours: 20 - 30 hours

Persona: Job Requisition Tech Employee

Recruiter: Antonio López 

Recruiter: Antonio Lopez Mendez