SQL Server Data Engineer
Job Description:The client is seeking a highly skilled technical consultant to support a homegrown VBA-based application called Star Tracker, built with MS Access Forms (front end) and SQL Server databases (back end). This 6-month engagement focuses on documenting the existing solution, refreshing and optimizing SQL Server databases, and providing maintenance support. The consultant will also produce comprehensive documentation to enable a clean handoff to Optum Tech, who will lead the upcoming migration of the solution to Snowflake.Key Responsibilities:1. Application & Architecture DocumentationConduct a thorough assessment of the existing MS Access/VBA front-end and SQL Server back-end architecture.Document application workflow, business logic, data flows, dependencies, and integration points.Create detailed technical documentation including:Entity relationship diagramsProcess flows and data lineageVBA module/function catalogConfiguration and environment details2. SQL Server Database Refresh & OptimizationReview and assess the current SQL Server database structure, stored procedures, tables, indexes, and jobs.Perform cleanup, optimization, and refresh activities including:Index tuningQuery optimizationArchival strategiesDatabase health checks and remediationEnsure alignment of SQL Server structures with documented business and technical requirements.3. Application Maintenance & SupportProvide ongoing support for the existing Star Tracker application during the engagement period.Troubleshoot issues with both the MS Access/VBA front end and SQL Server back end.Implement minor fixes or enhancements as needed to maintain stability.4. Migration Readiness & HandoffPartner closely with Optum Tech to prepare the solution for migration to Snowflake.Ensure documentation is complete, structured, and migration friendly.Participate in knowledge transfer sessions with technical and product teams.Identify risks, gaps, or dependencies that may impact migration readiness.Required skills:Required Qualifications5+ years of experience with MS Access, VBA, and SQL Server development and support.Strong SQL Server expertise including stored procedures, performance tuning, indexing, and data modeling.Experience documenting legacy systems and reverse engineering both database and application logic.Ability to quickly interpret and simplify complex VBA and Access form structures.Strong understanding of data architecture principles and migration considerations.Excellent communication skills for cross team collaboration and knowledge transfer.Preferred skills:Preferred QualificationsExperience modernizing or supporting VBA/MS Access based applications.Exposure to cloud data technologies especially Snowflake is a plus.Familiarity with Optum s technology ecosystem or healthcare data environments.Experience producing migration ready documentation.