SQL Engineer

Leidos, Inc.
Gaithersburg, MD, United States
8 days ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Experience required
8 years minimum
Compensation
$107,900.0 - $195,050.0
Working hours
Regular working hours

Tech stack

Query Performance Java (Programming Language) Application Layers Big Data Databases Extract Transform Load (ETL) Data Visualization Relational Databases PostgreSQL Linux System Administration MySQL Oracle (Applications)
+11 more
Performance Tuning Query Optimization Standard Sql SQL Databases Scripting Sql Optimization Grafana Database Optimization Caching Pandas Data Delivery

Job description

  • 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, * 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

Requirements

If you’ve spent the last few years sharpening your skills in SQL, Java, and missiondriven 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 resume, owning your craft, and delivering results that senior leaders actually see, you’ll thrive here., * 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

MARU

NSBA

Benefits & conditions

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. Employment 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.

About the company

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.

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