Full Stack Software Engineer H/F - End-of-Study Internship

🎯 About the Role

As a Full Stack Software Engineer Intern, you will join our core Tech & Product team to build, scale, and optimize our proprietary MarTech solutions and internal data platforms. You will work on both front-end user experiences and robust back-end architectures, actively participating in the entire software development lifecycle.

Your main missions will include:

• Feature Delivery: Participate in the conception, design, and implementation of new front-end and back-end features.

• API Design: Develop scalable, secure, and easily maintainable RESTful APIs.

• Performance Optimization: Analyze and optimize existing applications for maximum speed, responsiveness, and scalability.

• Quality Assurance: Write clean, testable code and create Unit/Integration tests for both front and back-end modules.

• Deployment & Ops: Assist in deploying applications to staging and production environments.

• Maintenance: Troubleshoot, debug, and fix application issues as they arise.

• Documentation: Prepare technical documentation for apps and features to ensure smooth team collaboration.

🌟 Why Join Primelis?

Primelis is a leading MarTech & Digital Marketing agency in Europe. We combine top-tier consulting with powerful proprietary data technologies to boost our clients’ performance. Joining us means being at the crossroads of Data, Tech, and Digital Strategy.

• Real Impact: You won’t just make coffee. You will work on core products used daily by internal teams and major international clients.

• Mentorship & Growth: Work alongside senior developers and data engineers who are passionate about sharing their knowledge.

• High Career Potential: This end-of-study internship is designed as a fast track toward a permanent position (CDI) within our growing tech team.

• Work Environment: Vibrant offices in the heart of Paris, a flexible remote work policy, regular team events, and a warm, collaborative atmosphere.