SQL Engineer

Leidos, Inc.
St. Louis, United States of America
yesterday

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Senior
Compensation
$ 195K

Job location

St. Louis, United States of America

Tech stack

Query Performance
Java
Application Layers
Big Data
Databases
ETL
Data Visualization
Relational Databases
PostgreSQL
Linux System Administration
MySQL
Oracle Applications
Performance Tuning
Query Optimization
Standard Sql
SQL Databases
Scripting (Bash/Python/Go/Ruby)
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 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., * 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

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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