PostGres/SQL Database Developer

Leidos LLC; Ashburn (VA); On-site; USD 108,000 - 195,000; Full time

Job summary

Leidos LLC in Ashburn, VA is seeking an experienced Senior SQL Developer to design, develop, and maintain complex PostgreSQL and Oracle databases, support ETL, and optimize performance for mission-critical systems on a CBP program.

You will collaborate with data analysts, application developers, and business stakeholders to ensure data integrity, security, and compliance with DHS and federal standards while delivering scalable solutions on time.

Qualifications

• BS/BA degree with related experience or Master’s degree with related experience.
• 8+ years of SQL development experience in PostgreSQL and Oracle.
• US citizenship and ability to obtain CBP background clearance.

Responsibilities

• Design, develop, and maintain complex SQL queries, stored procedures, functions, and triggers.
• Optimize and tune SQL queries for performance and scalability.
• Develop and maintain ETL processes for data integration and migration.
• Collaborate with developers and analysts to gather requirements.
• Ensure data integrity, security, and compliance with DHS/federal standards.
• Troubleshoot and resolve database-related issues.
• Document processes and participate in code reviews.
• Provide guidance to junior developers.

Skills

SQL development

PostgreSQL

Oracle

ETL

Data security

Performance tuning

AI/ML experience

Cloud databases

Education

BS/BA degree

Master’s degree

4 years of related experience in lieu of degree

Tools

AWS RDS

Azure SQL

SSRS

Power BI

Tableau

Job description

Leidos is seeking an experienced Senior SQL Developer to join our team. The ideal candidate will have a strong background in designing, developing, and maintaining complex SQL databases and solutions. The Senior SQL Developer will work closely with data analysts, application developers, and business stakeholders to ensure data integrity, optimize database performance, and support mission-critical applications. The qualified candidate will support a complex program providing Agile development and operations and maintenance for critical systems on a mission-critical program supporting the Passenger Systems Program Directorate (PSPD) within Customs and Border Protection (CBP). PSPD supports the Department of Homeland Security (DHS) and CBP critical missions, specifically screening and processing travelers at the ports of entry (POEs) into the United States.

Key Responsibilities

• Design, develop, and maintain complex SQL queries, stored procedures, functions, and triggers.
• Optimize and tune SQL queries for performance and scalability.
• Develop and maintain ETL processes to support data integration and migration efforts.
• Collaborate with application developers and business analysts to gather requirements and deliver solutions.
• Ensure data integrity, security, and compliance with DHS and federal standards.
• Troubleshoot and resolve database-related issues.
• Document database processes, structures, and procedures.
• Participate in code reviews and provide technical guidance to junior developers.

Required Qualifications

• BS/BA degree and 8 years of related experience or Master’s with 6 years of related experience; OR 4 years of related experience in lieu of degree 5+ years of experience in SQL development in PostgreSQL and Oracle.
• Must be able to maintain and obtain a CBP Background Investigation prior to start
• Must be a US citizen
• Experience working with AI/ML as an integral part of executing the software lifecycle and/or implementing AI/ML solutions to support mission Advanced proficiency in writing complex SQL queries, stored procedures, and performance tuning.
• Experience supporting a highly performant, mission-critical production system.
• Experience with ETL tools and data integration processes.
• Strong understanding of database design, normalization, and indexing.
• Experience with data security and compliance requirements.
• Excellent problem-solving, analytical, and communication skills.

Preferred Qualifications

• Experience in a federal or government environment.
• Experience with cloud-based database solutions (e.g., AWS RDS, Azure SQL).
• Familiarity with reporting tools (e.g., SSRS, Power BI, Tableau).
• Experience with Agile development methodologies.

Original Posting: August 31, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range: Pay Range $107,900.00 - $195,050.00 The Leidos pay range for this job level is a general guideline only and 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.

Leidos 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 $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

Pay and Benefits 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 here.

Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address.

If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity All 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.