Database Developer (T-SQL) with SQL Server Administration

We are looking for a Database Developer with deep expertise in Microsoft SQL Server and T-SQL who also enjoys managing and optimizing database environments. This hybrid role combines hands-on database development with SQL Server administration, allowing you to design high-performing SQL solutions while ensuring the stability, security, and reliability of our Microsoft SQL Server–based data warehouse platform.You will work closely with data engineers, business analysts, and application developers to develop efficient database solutions, optimize complex SQL workloads, and maintain production SQL Server environments.Location: Slovakia (Employee contract or B2B for foreigners from other EU countries)Salary: Employee contract from 2,700 EUR gross/month (depending on seniority) or B2B. We are open to discussing compensation based on your experience.Please note that this position is based in Europe. Responsibilities:Design, develop, and optimize complex T-SQL solutions (stored procedures, functions, views, scripts) for data warehouse.Improve database performance through query tuning, execution plan analysis, indexing strategies, and SQL Server optimization.Administer and maintain Microsoft SQL Server, including SSIS, SSAS, database security, monitoring, backup/recovery, patching, and capacity planning.Ensure high availability, reliability, and operational excellence through proactive monitoring, incident management, root cause analysis, and disaster recovery planning.Collaborate with Data Engineers, Developers, and Business Analysts to design scalable database solutions and promote SQL Server best practices.Required QualificationsStrong hands-on experience with Microsoft SQL Server development and administration.Advanced T-SQL skills (stored procedures, functions, views, CTEs, window functions, transactions, error handling, set-based programming).Experience with SQL performance tuning, including execution plan analysis, query optimization, indexing, statistics, blocking/deadlock resolution, and tempdb optimization.Experience supporting data warehouse, BI, or analytical workloads.Solid knowledge of SQL Server security, backup & recovery, maintenance, and Windows Server fundamentals.Nice to HaveExperience with SSIS, SSAS, and Azure SQL (Managed Instance or SQL Server on Azure VMs).Familiarity with Power BI, CI/CD for databases, PowerShell, or SQL Server automation.Experience working in Agile environments.What We ValuePassion for writing clean, high-performance SQL.Strong analytical, troubleshooting, and communication skills.Ownership, continuous improvement mindset, and attention to documentation.Willingness to share knowledge and promote SQL Server best practices.Employee perks, benefitsOur daily jobs are AI-enabled, including access to an enterprise Claude license to help you work smarter and faster.You will have an immense opportunity and our support to grow professionally, working on leading data analytics projects and technologies in the region.You will work in an environment which will stand behind you, support you in your growth, and which will value your work through competitive salary and a bonus structure.Professional growthAccess to the latest technology and know-howPersonalized professional development plansYoung, dynamic and professional teamPotential to work on international projectsUnmatched opportunities for professional growthAdastra Academy - wide range of leading-edge trainings & certifications, workshops, language coursesInformation about the selection processWe look forward to working with you, and you becoming an Adastran!In case of interest, do not hesitate to send us your Curriculum Vitae in English language. We will contact only candidates who match the profile we are looking for. Thank you for your understanding.