Senior Fullstack Engineer

**Start:** ASAP **Location:** Stockholm **Assignment:** Full-time **Duration:** Long-term 4 Days on site ## About the assignment We are looking for a highly skilled Senior Fullstack Engineer for a long-term consulting assignment with a Stockholm-based client. You will join a growing engineering environment where you will play an important role in designing, building and evolving modern digital products and services. The assignment offers significant technical ownership and the opportunity to influence architecture, development practices and technical direction from an early stage. You will work across backend and frontend development, collaborating closely with product, design and engineering colleagues. The environment is fast-moving and requires someone who enjoys solving complex problems, taking initiative and turning ideas into production-ready solutions. ## Your profile We are looking for an experienced engineer with strong technical expertise in either backend or frontend development, combined with a broad understanding of modern software engineering. You have experience with: - Backend development using Java/Kotlin, APIs and distributed systems, or frontend development using TypeScript and React. - Building and operating cloud-based production systems. - Modern software architecture and scalable application development. - CI/CD, automated testing and infrastructure as code. - Taking technical ownership and making well-founded architectural decisions. - Working independently in environments where requirements and solutions evolve over time. You are pragmatic, curious and comfortable challenging existing solutions when you see opportunities for improvement. You enjoy working closely with others but are equally comfortable taking responsibility and driving things forward independently. Experience from banking, fintech or other regulated industries is beneficial, but not a requirement.