PostGres/SQL Database Developer

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 degree5+ years of experience in SQL development in PostgreSQL and Oracle.Must be able to maintain and obtain a CBP Background Investigation prior to startMust be a US citizenExperience working with AI/ML as an integral part of executing the software lifecycle and/or implementing AI/ML solutions to support missionAdvanced 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.If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.Original Posting:August 31, 2026For 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 - $195,050.00The 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.SummaryLocation: Ashburn, VAType: Full time