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.

^Remote Work
**Must be authorized to work in USA with a valid VISA/GC/USC
*Previous United Health /Optum experience is a must.

Key Responsibilities
1. Application & Architecture Documentation
• 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:
o Entity relationship diagrams
o Process flows and data lineage
o VBA module/function catalog
o Configuration and environment details

2. SQL Server Database Refresh & Optimization
• Review and assess the current SQL Server database structure, stored procedures, tables, indexes, and jobs.
• Perform cleanup, optimization, and refresh activities including:
o Index tuning
o Query optimization
o Archival strategies
o Database health checks and remediation
• Ensure alignment of SQL Server structures with documented business and technical requirements.

3. Application Maintenance & Support
• 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.

4. Migration Readiness & Handoff
• 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.

Required skills:
Required 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.

Preferred skills:
Preferred Qualifications
• 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.

This is a remote position.