Mid Level Software Engineer Jobs in Frederick, MD

If you've been building your skills in SQL, data engineering fundamentals, and missiondriven 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 highvisibility, datadriven 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 easytoconsume 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 Linuxbased environments
• Proven ability to work independently on datacentric tasks and ensure data quality

Preferred Qualifications:

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

#NSBA

#MARU

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.