Senior Database & Migration Specialist

We are seeking a highly skilled full-stack developer with deep specialization in database design, database architecture, and enterprise-level data migration. This role will require strong MSSQL programming, data modelling expertise, high-performance database development, and experience in migrating databases or enterprise systems across platforms.

• Design, develop, enhance, and maintain enterprise-grade relational databases
• Create advanced stored procedures, functions, views, and complex T-SQL logic
• Architect and optimize database schemas, indexing strategies, and data models
• Perform database performance tuning, query optimization, and execution plan analysis
• Lead and execute database migration projects (cross-version, cross-platform, or cross-technology)
• Support enterprise application migration projects involving modernization, refactoring or re-platforming
• Develop backend data flows, integration pipelines, and high-volume processing routines
• Ensure database scalability, reliability, and compliance with best practices
• Create documentation including ERDs, data dictionaries, and data architecture standards

Essential:

• Minimum 5 years of hands-on experience in enterprise database development
• Strong expertise in database architecture, including schema design, ER modelling, and long-term stability planning
• Intermediate to advanced MSSQL expertise, including:
• Complex stored procedures
• Ability to refactor advanced T-SQL programming
• Query tuning and optimization
• Triggers, functions, and transactions handling
• Index strategies and database performance tuning
• Experience with:
• Large-scale database driven application architecture
• Data processing, reporting and integration
• Database lifecycle management and deployment practices
• Strong understanding of relational database theory (ACID, normalization, isolation levels)
• Experience in enterprise-level database migration projects such as:
• Cross-technology migrations (e.g., MongoDB to MSSQL or other platform)
• Cross-version upgrades
• Structural redesigns and data transformation
• Ability to analyse complex data structures and propose optimized, maintainable solutions

Preferred

• Experience in enterprise application migration, especially re-platforming or modernization of legacy systems
• Experience with .NET technologies (C#, .NET Framework, .NET Core) for backend integration
• Experience with frontend technologies: HTML5, CSS, JavaScript, AJAX, XML
• Familiarity with NoSQL/document-style databases (e.g., MongoDB)
• Experience with CI/CD pipelines and version control for database deployments
• Knowledge of test automation for data validation
• Ability to speak or understand German

Personal Skills

• Strong analytical and architectural thinking skills
• High attention to detail, especially in data-sensitive work
• Organized, structured, and capable of independent problem-solving
• Strong communication and documentation skills
• Team player with the ability to mentor others
• Proactive, solution-oriented mindset