Senior

About the role

Senior Data Scientist supporting the Department of Veterans Affairs Veterans Health Administration, working as an individual contributor on a small team to modernize on‑premises SQL Server/Power BI analytics platforms, build data pipelines, perform statistical and machine‑learning analysis, and deliver business‑intelligence solutions.

About the company

Three Sisters Federal, a subsidiary of the Seneca Nation Group (SNG) within Seneca Holdings, provides federal government contracting services to civilian, defense, and intelligence customers and participates in the SBA 8(a) program; the company emphasizes a collaborative culture and a mission to deliver financial and non‑financial benefits to members of the Seneca Nation.

Requirements

• 5+ years of experience in data science, data engineering, or advanced analytics; Bachelor’s degree in a quantitative or technical field preferred or equivalent experience.
• Advanced SQL skills and hands‑on experience with on‑premises Microsoft SQL Server, including performance tuning.
• Strong Python proficiency for data work, including dataframe manipulation, numerical computing, programmatic charting, and SQL Server connectivity via Python connectors.
• Demonstrated Power BI development experience covering DAX, Power Query, semantic model design, and performance optimization.
• Experience building and maintaining ETL processes using SSIS or comparable tools.
• Applied experience with regression, classification, time‑series forecasting, clustering, dimensionality reduction, and statistical inference/hypothesis testing.
• Working knowledge of version control and Python environment/dependency management.
• Experience assessing existing analytics environments and producing design options with trade‑offs for decision‑makers.
• Ability to document work clearly and communicate analytical findings to non‑technical stakeholders.
• Ability to obtain and maintain a VA background investigation and PIV credential.
• Must be a U.S. citizen.