SQL Engineer
Leidos
SQL Engineer
If 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.
And while the requisition requirements may seem standard fair, 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
Key Responsibilities
- Develop 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 refactoring
- Ensure data accuracy and integrity across reporting datasets
- Troubleshoot and resolve data issues across database and application layers
- Shape and structure data for efficient and intuitive dashboard visualization
- Collaborate with ETL engineers and dashboard developers to ensure reliable, end-to-end data delivery
Basic Qualifications
- Bachelor's degree with 8–12 years of experience, or Master's with 6–10 years of experience
- U.S. Citizenship
- Active TS/SCI with the ability to successfully pass a Polygraph
- Expert-level SQL skills, including:
- Complex joins across large datasets
- Query optimization and execution plan analysis
- Aggregations, subqueries, and window functions
- Strong experience with relational databases (PostgreSQL, MySQL, Oracle, or similar)
- Experience working with large-scale data supporting analytics/reporting
- Proficiency in Linux environments
- Ability to work independently and solve complex data challenges
Preferred Qualifications
- Experience with Grafana or similar visualization tools
- Python for data manipulation (pandas, scripting, automation)
- Experience with materialized views, caching strategies, or query acceleration techniques
$130k - $160k
...SQL Engineer Location: Gaithersburg, Maryland; Alexandria, VA; Chantilly, VA; Aurora, CO; St. Louis, MO; Tucson, AZ Clearance: Top Secret/SCI with ability to obtain a Polygraph Schedule: Full Time Travel: No Remote: No Company Overview: We are Ennoble First. The...SuggestedFull timeRemote work$145k - $165k
...operating with a product mindset, prioritizing speed, ownership, and execution over bureaucracy. Description Title: Senior SQL Database Engineer Location: Washington, DC or Bethesda, MD Terms: Full-time Salary: 145-165 DOE Clearance: Active Top...SuggestedFull timeWork experience placementImmediate startFlexible hours$135k - $165k
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$80k - $100k
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$131.3k - $237.35k
Join a Mission That Matters!Are you a highly skilled Software Engineer ready to tackle complex technical challenges that directly support... ...CloudFormation and RDSRelational Database: MySQL, PostgreSQL, or SQL ServerNoSQL Database: OpenSearch/Elasticsearch.Operating System:...Full timeContract workFor contractors$97k - $135k
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...Overview: We are seeking an experienced and strong Lead Software Engineer (Back-End) to oversee day-to-day operations and development.... ...processing. Work across a variety of technologies, including C# .NET, SQL, and Javascript. Oversee hosting environments, manage live...Full time- ...Must be strong in development of Oracle Forms & Reports Oracle EBS R12 technical experience: Expert knowledge of PL/SQL or SQL Expert knowledge of workflow, forms and reports Significant experience with OA Framework and developing solutions using...Work experience placementH1bImmediate start
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$70k - $120k
...Python.Experience with implementing and supporting integrated systemsExperience with RDBMS and NoSQL databases.Experience with Transact-SQL/PL-SQL and Stored ProceduresExperience with System and Business Analysis to create requirements.Knowledge of Product Development,...Work at officeMonday to Friday$80 - $85 per hour
...Service Bus, Service Orchestration (BPEL)Oracle Application Server 10g, Oracle Weblogic Server 11g, Apache SolrDesign Patterns, OOPSPL/SQL, Oracle Forms/Reports 11g, PL SQL Web CatridgesWeb Services, WSDL, UDDI, XML, DTD, XSD,XLST,SOAP, JAVA RMIBIRT Reports, Jasper...Contract work- ...JQuery, Ajax, CSS Oracle Weblogic, Apache Minimum 3 years of experience with the following technologies: Oracle Database, SQL/ PL/SQL, Apache Solr Charting Technologies (D3/C3 Charts preferred) GIS/Maps development (Leaflet/ OpenStreetMap libraries...Contract work
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- ...is seeking an experienced Database Architect / Senior Database Engineer to support a large, mission-critical FDA modernization program.... ...supporting enterprise applications.\n Develop and review: \n \n PL/SQL\n SQL queries\n Stored procedures\n Packages\n Functions\n Triggers\n...Contract workTemporary workImmediate startFlexible hours
$87.1k - $157.45k
...impact? Leidos is seeking a talented Mid-Level Full Stack Software Engineer to join the Chinook Program supporting an Intelligence Community... ...cloud platformsRelational Database: MySQL, PostgreSQL, or SQL ServerOperating System: Windows, LinuxVersion Control System: GitDeep...Full timeContract work$118k - $150k
...Transparency continue to represent our brand. Because of that, we continue Onward, Upward, and Skyward. We need a Software Engineer who does it all. Would your friends say you can dissect a complex problem until it quietly gives up? Have you been told (more...Full timeFor contractorsWork at officeRemote workFlexible hours$62k - $141k
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...Software Engineer II About the Role ESI provides direct support to the Frederick National Lab (FNL) and its clients at the National... ...Java, JavaScript, ReactJS, Angular JS, Bootstrap, Node.js, Docker, SQL, CSS, OOP, Python, and AWS Core Services. ~ AWS Cloud...Full timeContract workTemporary workLive inWork at officeLocal areaWorldwide- ...complex critical federal program requiring advanced graph-based data engineering and analytics capabilities. The ideal candidate will lead the... ...ETL processes for large-scale data environments.Proficiency in SQL and data modeling, including schema design and performance...
$87.1k - $157.45k
...backend development, object‑oriented programming, and mission‑driven engineering, and you’re ready for work that actually moves the needle, this... ...and maintainable systemsDatabase Development: Write and modify SQL queries to support application functionality and data...Full time- ...encourage professional growth through various learning opportunities.Skills and attributes for success:Utilize Angular.JS, JavaScript, SQL and related technologies for ServiceNow developmentSupport the discovery, requirements gathering, and the build out of core...Full time
$87.1k - $157.45k
Leidos is looking for a Software Developer focusing on System Management supporting our Federal Aviation Administration (FAA) Terminal Flight Data Manager (TFDM) program. The successful candidate will play a crucial role in ensuring the seamless integration and functionality...Permanent employmentFull timeWork at officeHome office2 days per week3 days per week- ...developer certifications. Experience developing customer-facing user interfaces Understanding of relational databases such as SQL Server and data integration tools Best Regards Syed Imran Sr Technical Recruiter (***) ***-****...Contract workImmediate start
- ...dealing with a Business Oriented IT environment with rich involvement in technology innovation, ERP and CRM counselling, Product Engineering, Business Intelligence, Data Management, SOA, BPM, Data Warehousing, SharePoint Consulting and IT Infrastructure. Our other offerings...Worldwide
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