Software Engineer

**Essential requirements:** * Strong full\-stack engineering experience with deep expertise in Node.js and React, capable of building and maintaining modern web applications end to end. * Proficient in TypeScript with hands\-on experience designing scalable, maintainable, and strongly typed codebases. * Solid experience designing and developing Backend\-for\-Frontend (BFF) architecture, creating APIs and orchestration layers tailored for web and mobile clients will be a huge advantage. * Strong understanding of system design principles including caching strategies, scalability, reliability, performance optimization, and observability. * Proven experience building and operating large\-scale, high\-traffic applications in production environments. * Hands\-on experience with modern Node.js frameworks; prior experience with Fastify is a strong advantage. * Strong expertise in unit testing and automated quality assurance using frameworks such as Vitest or Jest, with a focus on maintainable test coverage. * Strong knowledge of software engineering best practices including clean code, testing, code reviews, CI/CD, security, and maintainability. * Excellent communication and stakeholder collaboration skills, with the ability to work effectively across engineering, product, and business teams. * Detail\-oriented team player with practical experience working in Agile **Please explain how you meet all the requirements** **when applying.** **Utilization:** 100 **%** **Location:** Stockholm **Period** : 08\-05\-2026\-31\-12\-2026 **Last day to apply** : 30\-04\-2026 We present regularly. This means that we sometimes remove the assignements from our website before the final application deadline. If you are interested in an assignement, we recommend that you submit your application as soon as possible.