About the CompanyAt 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 RoleYou will join a cross-functional team working with a modern, high-scale data platform where performance, stability, and maintainability are critical. This is a hands-on role that combines database development, performance engineering, and reliability work in a business-critical SQL Server environment.You will focus on optimizing complex SQL workloads, improving observability, and shaping scalable database design for large datasets. The role is centered on deep technical work with query behavior, execution plans, partitioning, and production performance rather than traditional operational DBA ownership such as backups, logins, or disk administration. It is an exciting opportunity if you want to influence how mission-critical data systems perform at scale.Job DescriptionYou will design, develop, and optimize stored procedures, functions, and complex SQL queries.You will build and maintain Dynamic SQL solutions for demanding data workloads.You will work with partitioning strategies for large datasets and support data lifecycle management.You will drive query performance tuning and index optimization to improve throughput and stability.You will refine schema design, data types, statistics, and execution plans to strengthen long-term maintainability.You will investigate and resolve production performance issues using tools such as sp_Blitz.You will analyze usage patterns and problematic queries to identify improvement opp…DatabasutvecklareMjukvaru- och systemutvecklare m.fl.