SQL Engineer

DescriptionIf you've spent the last few years sharpening your skills in SQL, Java, and mission-driven engineering, and you're ready for work that actually moves the needle, this is the opportunity cleared engineers look for when they're ready for real impact. If you take pride in writing your own résumé, owning your craft, and delivering results that senior leaders actually see, you'll thrive here.We're hiring a SQL Engineer to support a highly visible, data-driven application that powers analytics and reporting across the organization. In this role, you'll write complex queries, shape data for dashboards, optimize performance at scale, and deliver high-quality datasets that stakeholders rely on every day. 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; Chantilly, VA; Aurora, CO; St. Louis, MO; and Tucson, AZ, giving top talent multiple paths to join the mission.Why This Role Stands OutHigh Impact: Your work directly supports a widely used application that drives real-time decision-makingHigh Visibility: Partner with engineering teams and key stakeholders across programsCareer Growth: Expand your expertise in large-scale data systems, performance optimization, and advanced SQL engineeringChallenging Work: Tackle complex data problems, not routine queriesKey ResponsibilitiesDevelop advanced, high-performance SQL queries across large, complex datasets (multi-table joins, window functions, aggregations)Optimize query performance using execution plans, indexing strategies, and query refactoringEnsure data accuracy and integrity across reporting datasetsTroubleshoot and resolve data issues across database and application layersShape and structure data for efficient and intuitive dashboard visualizationCollaborate with ETL engineers and dashboard developers to ensure reliable, end-to-end data deliveryBasic QualificationsBachelor's degree with 8–12 years of experience, or Master's with 6–10 years of experienceU.S. CitizenshipActive TS/SCI with the ability to successfully pass a PolygraphExpert-level SQL skills, including complex joins across large datasetsQuery optimization and execution plan analysisAggregations, subqueries, and window functionsStrong experience with relational databases (PostgreSQL, MySQL, Oracle, or similar)Experience working with large-scale data supporting analytics/reportingProficiency in Linux environmentsAbility to work independently and solve complex data challengesPreferred QualificationsExperience with Grafana or similar visualization toolsPython for data manipulation (pandas, scripting, automation)Experience with materialized views, caching strategies, or query acceleration techniquesPay RangePay Range: $107,900.00 - $195,050.00Pay and BenefitsEmployment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.Commitment to Non-DiscriminationAll 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.J-18808-Ljbffr