Senior Fullstack Developer

About the Company At Avaron, you get the security of permanent employment combined with the variety of working at different customers. We place specialists across everything from tech, IT and industry to project management and business support – and whatever the assignment, you have a consultant manager who is there for you and your development. About the Role You will join a team that owns and evolves business-critical case management applications used by Customer Service in a regulated environment. These solutions are central to daily operations, stable service delivery, and a smooth experience for internal users. A large part of the work is focused on lifecycle management for legacy applications. That means modernizing existing solutions, reducing technical debt, upgrading platforms, and addressing security and lifecycle-related risks. At the same time, you will contribute to a modern Angular-based user interface supporting KYC-related case management processes. You will work as a hands-on senior team member with influence across both frontend and backend development. You will also help strengthen modern ways of working, including AI-assisted development, clean engineering practices, and long-term maintainability. This is a strong opportunity for you who enjoy combining modernization work with new development in a business-critical setting. Job Description You will maintain and further develop case management applications that support core operational processes. You will drive lifecycle management initiatives such as modernization, platform upgrades, and reduction of technical debt. You will contribute to the development of a modern user interface in Angular for KYC-related workflows. You will design, build, and improve scalable, secure, and user-friendly business applications across the full stack. You will support frontend development through collaboration, knowledge sharing, and guidance in Angular and frontend architecture. You will contribute to modern software engineering practices, including CI/CD, automated deployments, code reviews, and trunk-based development. You will help the team adopt AI-assisted development practices for areas such as testing, documentation, troubleshooting, and software quality. You will mentor team members and contribute to maintainable architecture and sustainable technical decisions over time. Requirements Strong fullstack development experience with solid frontend expertise. Experience with lifecycle management, modernization, maintenance, and technical debt reduction. Strong experience with Angular, TypeScript, REST APIs, and modern web development. Strong experience with .NET/C#, ASP.NET Core, and modern .NET development. Experience designing, developing, and maintaining scalable, secure, and user-friendly business applications. Experience with GitHub, GitHub Actions, CI/CD pipelines, code reviews, and automated deployments. Experience with automated testing and quality-focused development. Experience working with trunk-based development. You communicate fluently in Swedish and English. Nice to have Experience with .NET Aspire. Knowledge of event-driven architecture and Kafka. Experience with microservices, distributed systems, Kubernetes, and cloud-native platforms. Experience mentoring developers in Angular and frontend architecture. Experience from regulated industries, case management, KYC, insurance, or similar business domains. Experience using AI-assisted development tools in daily engineering work. What We Offer Permanent employment at Avaron AB Occupational pension Wellness allowance of SEK 5,000 per year Application Selections are made on an ongoing basis – apply as soon as you can.