Junior Backend Developer

Halmstad · Hybrid · Engineering Do you enjoy building backend products that make complex data easier to work with? Effektify is now looking for a Junior Backend Developer to help build and improve a platform used to turn marketing, e-commerce, and business data into clearer insights and better decisions. About the role In this role, you will help build the backend of a product that handles large amounts of connected data from many different sources. A big part of the job is to make sure data flows, backend logic, and technical foundations are stable, clear, and easy to keep building on over time. You will work with backend development, databases, integrations, and product logic. The role is hands-on and gives you the chance to grow quickly in a real product environment where backend quality matters a lot. You will work closely with Martin, our CTO, and the rest of the tech team, most of which is based in Halmstad. Since the team is still relatively small, you will get broad exposure, short feedback loops, and a good chance to learn by building together with experienced developers. What you will work on Your work will include a mix of: Building and improving backend logic, APIs, and product functionality Working with databases such as PostgreSQL and MySQL Supporting integrations between ad platforms, analytics tools, e-commerce systems, and financial systems Helping improve structure, performance, and maintainability on the backend side of the platform Working closely with frontend and product to build features end-to-end Using modern AI tools in development to move faster, test ideas, and improve implementation quality Examples of projects and focus areas In the first phase, your work may include areas such as: Backend flows for connected data Help build and improve the backend logic that pulls together data from multiple sources and makes it usable inside the product. APIs and product logic for new features Support the development of backend fun