SQL Data Engineer

Role 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 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 the lead for upcoming migration of the solution to Snowflake.

Qualifications

• 5+ 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.

Requirements

• Conduct 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 diagrams
  • Process flows and data lineage
  • VBA module/function catalog
  • Configuration and environment details
• Review and assess the current SQL Server database structure, stored procedures, tables, indexes, and jobs.
• Perform cleanup, optimization, and refresh activities including:
  • Index tuning
  • Query optimization
  • Archival strategies
  • Database health checks and remediation
• Ensure alignment of SQL Server structures with documented business and technical requirements.
• Provide 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.
• Partner 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.

Benefits

• Experience 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.