JobMesh

Tech Summer Internship 2026

CatalystOne · Stockholm, SE

Hello tech-minded students! 👩‍💻👨‍💻 Are you looking for a hands‑on software engineering internship where you’ll build real product functionality used by real...

Job description

Hello tech-minded students! 👩‍💻👨‍💻 Are you looking for a hands‑on software engineering internship where you’ll build real product functionality used by real customers? As a Tech Summer Intern at CatalystOne Engage, you’ll spend 10 weeks embedded in our experienced development team, working on a clearly defined development project within our product. What you'll work with: This internship is focused on web-based product development. Projects typically involve: Backend development in .NET (C#) Front‑end development using Vue.js: Working with existing production codebases, APIs, and data models You will work on a concrete problem that has real business and customer impact, not a demo or throwaway project. Your responsibilities: Design and implement a solution to a defined technical problem Write production-quality code with guidance from senior developers Test, iterate, and improve your solution based on feedback Present your results to the development team at the end of the internship You’ll be expected to work independently, while collaborating closely with experienced developers for guidance and reviews. Who we're looking for: This internship is a good fit if you: Are a final‑year...