Senior Backend & Data Engineer – JavaScript/TypeScript

Senior Backend & Data Engineer Location: Hybrid – Warsaw (2 days remote / 3 days office) About Consid Consid is an award-winning IT company founded in Sweden, with a strong presence across Norway, Denmark, Germany, Finland, and Poland. We combine Scandinavian work culture with technical excellence, delivering modern, scalable digital solutions for international clients. At Consid, we believe in collaboration, ownership, and continuous growth.

We build strong teams that create meaningful products — and we make sure our people grow along the way. About the Role We are looking for an experienced Senior Backend & Data Engineer to join Technology Innovation Hub in Warsaw. This is a hybrid position combining backend software engineering with data engineering, with a particular focus on complex database solutions, data architecture, and Master Data Management (MDM).

You will work hands-on with JavaScript and TypeScript, complex relational databases, and data-driven backend solutions, while taking technical ownership of a dedicated data domain.

Design, develop, and maintain scalable backend services and data-driven applications using JavaScript and TypeScript. Design and implement complex relational database structures, primarily using PostgreSQL or similar technologies. Take end-to-end technical ownership of a dedicated data domain, ensuring the reliability, consistency, and maintainability of its solutions.

Develop and optimize data models, database schemas, queri