Backend Developer - Shape Games

Backend Developer - Shape Games

Kambi

Copenhagen, Denmark

About the role

As a Backend Developer, you’ll be responsible for designing, implementing, and maintaining the server-side logic of our digital products. Your focus will be on building efficient APIs, ensuring performance, and collaborating closely with frontend teams and product owners to deliver high-quality user experiences.

Tech Stack

• Languages: Kotlin (or Java);
• Frameworks: Ktor;
• Databases: PostgreSQL, Redis;
• Infrastructure: AWS (EC2, RDS, Cloudfront, etc.).

Key responsibilities

• Design, build, and maintain backend services using Kotlin and Ktor;
• Develop and integrate APIs for seamless communication across systems;
• Optimize performance and scalability through effective caching and service architecture;
• Contribute to system design to support modular, microservice-based infrastructure;
• Collaborate with frontend developers and DevOps to ensure end-to-end feature delivery;
• Ensure code quality through best practices, reviews, and test coverage;
• Monitor backend reliability and debug issues in production;
• Stay current with backend development trends and AWS innovations.

What we’re looking for

• 5+ years of experience in backend development;
• Strong proficiency in Kotlin or Java;
• Hands-on experience with AWS infrastructure and cloud-native applications;
• Solid understanding of caching mechanisms and performance optimization (e.g., Redis, CDN);
• Experience with microservices architecture and scalable system design;
• Familiarity with relational databases (PostgreSQL preferred);
• Excellent communication skills and team collaboration mindset;
• Clear, structured, and timely communication;
• Adaptability to fast-changing circumstances and requirements;
• Strong collaboration and teamwork mindset.