Mid-Level SQL Engineer

Leidos

SQL Engineer at Leidos supporting high-visibility, data-driven application. Writing complex SQL queries and ensuring data accuracy for dashboards.

Posted 4/17/2026full-timeGaithersburg • Arizona, Colorado, Maryland, Montana, Virginia • 🇺🇸 United StatesMid-LevelSenior💰 $87,100 - $157,450 per yearWebsite

Tech Stack

Tools & technologies

LinuxMySQLOraclePostgresSQLTypeScript

About the role

Key responsibilities & impact

Write complex SQL queries involving joins, aggregations, filtering, subqueries, and window functions to support dashboards
Structure query outputs in a way that is optimized for dashboard consumption (clear naming, grouping, formatting)
Partner with dashboard developers to define and deliver the data required for visualizations and reporting
Ensure accuracy, consistency, and completeness of datasets used in dashboards
Identify inefficient queries and make basic improvements to support responsive dashboards
Translate dashboard and reporting requirements into effective SQL queries

Requirements

What you’ll need

Bachelor’s degree in computer science, Software Engineering, or related field with 4–8 years of experience; or Master’s with 2–6 years
US Citizenship
Active TS/SCI with ability to successfully pass a Polygraph
Strong SQL skills, including the ability to write advanced queries (joins, aggregations, subqueries, window functions)
Experience working with enterprise relational databases (PostgreSQL, MySQL, Oracle, etc.)
Background supporting analytics, dashboards, or reporting pipelines
Comfortable working in Linux‑based environments
Proven ability to work independently on data‑centric tasks and ensure data quality.

Benefits

Comp & perks

Health and Wellness programs
Income Protection
Paid Leave
Retirement

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

SQLjoinsaggregationssubquerieswindow functionsPostgreSQLMySQLOracledata qualitydata-centric tasks

Soft Skills

independent workattention to detailcollaborationcommunication

Certifications

Bachelor’s degreeMaster’s degreeTS/SCI clearance