Mid-Level SQL Engineer

Leidos; St. Louis (MO); On-site; USD 87,100 - 157,450; Full time

Job summary

Leidos is hiring a SQL Engineer to support a high-visibility, data-driven application enabling analytics and reporting across the organization. You will write complex SQL queries, shape data for dashboards, ensure data accuracy, and deliver reliable datasets that stakeholders rely on daily.

The role collaborates with dashboard developers and application teams, with opportunities across multiple on-site locations.

Qualifications

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

Responsibilities

• Write complex SQL queries to support dashboards and analytics.
• Shape data for visualization; ensure clean, consistent outputs.
• Partner with dashboard developers to deliver data for visualizations and reporting.
• Validate data accuracy, consistency, and completeness of datasets for dashboards.
• Identify and implement basic query performance improvements for responsive dashboards.
• Translate dashboard and reporting requirements into effective SQL queries.

Skills

SQL

Data quality

Analytics

Dashboard data

Linux

Education

Bachelor’s degree in computer science or related

Master’s degree with 2–6 years experience

Tools

Grafana

Tableau

PostgreSQL

MySQL

Oracle

Job description

Description

If you’ve been building your skills in SQL, data engineering fundamentals, and mission‑driven development, and you’re ready for work that actually moves the needle, this is the kind of opportunity cleared engineers pursue when they want to grow while making real impact. If you take pride in your craft, enjoy solving meaningful data problems, and want your work to support a mission with visibility at senior levels, you’ll thrive here.

We’re hiring a SQL Engineer to support a high‑visibility, data‑driven application that powers analytics and reporting across the organization. In this role, you’ll write complex queries, shape data for dashboards, ensure data accuracy, and deliver reliable datasets that stakeholders depend on every day. You’ll work closely with dashboard developers and application teams to provide clean, consistent, and easy‑to‑consume data for mission users. Our primary development team operates out of Gaithersburg, MD, but innovation doesn’t stop there. We’re able to support onsite engineers in Alexandria, VA; Aurora, CO; St. Louis, MO; and Tucson, AZ, giving top talent multiple paths to join the mission.

And while the requisition requirements may seem standard fare, the position is not; as it will join a high performing team that is changing the way digital engineering and mission operations intelligence is enabled for our customer.

Why This Role Stands Out

• High Impact: Your work directly supports a widely used application that drives real-time decision-making
• High Visibility: Partner with engineering teams and key stakeholders across programs
• Career Growth: Expand your expertise in large‑scale data systems, performance optimization, and advanced SQL engineering
• Challenging Work: Tackle complex data problems, not routine queries

Essential Responsibilities

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

Basic Qualifications

• 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

Preferred Qualifications

• Experience withGrafana, Tableau, or similar visualization tools
• Exposure toCI/CD pipelines
• Experience working inAgile environments

Pay Range

Pay Range $87,100.00 - $157,450.00

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers.

• competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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