Database Engineer - Senior Level; PostgreSQL​/MongoDB​/Oracle

Database Engineer - Senior Level (Postgre

SQL/Mongo

DB/Oracle)

Job Location s: US-VA-Herndon

• Requisition :
• Position Category:
  Information Technology
• Clearance:
  Top Secret/SCI w/Poly

We are seeking a hands‑on Senior Database Engineer to support the design, implementation, optimization, and sustainment of mission‑critical database systems. This role emphasizes expertise in Postgre

SQL and demonstrated experience with Mongo

DB and/or Oracle database systems.

The ideal candidate will possess strong database engineering skills, including database design, performance tuning, PL/SQL and PL/pgSQL development, and operational support, with additional experience in database migrations and modernization efforts. The candidate must excel in high‑pressure, secure environments, supporting database performance, reliability, scalability, and security.

Note:

This is a database engineering‑focused role and not an ETL or data engineering role.

• Database Design & Development
  • Designing, developing, analyzing, and optimizing database systems (Postgre
    
    SQL, Mongo
    
    DB, Oracle).
  • Performing database modeling, relational database architecture, metadata, repository creation, and schema management.
  • Designing and implementing complex database structures such as tables, indices, triggers, stored procedures, and schemas.
• Database Tuning & Maintenance
  • Performing advanced performance tuning, query optimization, and high‑reliability configurations.
  • Conducting database monitoring and troubleshooting to identify and resolve performance bottlenecks.
• Operational Support
  • Developing and supporting Postgre
    
    SQL databases using SQL, PL/pgSQL, or procedural database languages like PL/SQL.
  • Supporting database replication, backup, recovery, continuity solutions, and disaster recovery.
  • Implementing and managing database upgrades, migrations, and modernization efforts.
  • Developing and documenting system requirements, source analysis, and process analysis throughout the database lifecycle.
• Security
  • Implementing Row‑Level Security, database encryption, and STIG hardening to enhance compliance.
  • Preparing for and supporting security and compliance audits in line with organizational and government requirements.
• Technological Integration & Collaboration
  • Collaborating with cross‑functional teams in a fast‑paced Agile environment, working closely with developers, testers, system engineers, and mission stakeholders.
  • Participating in Oracle‑to‑Postgre
    
    SQL migration activities or integrating Mongo
    
    DB into cross‑domain systems.
  • Supporting CI/CD pipelines using Jenkins, Git, and Artifactory.
  • Evaluating and recommending technology components, including software, hardware, networking, and database management capabilities.
• Monitoring & Automation
  • Implementing automated database testing using tools like Selenium or Robot Framework.
  • Utilizing tools like App Dynamics or other monitoring platforms for real‑time database performance oversight.
• AWS Cloud Expertise
  • Working with AWS services (e.g., Amazon RDS) to manage, monitor, and optimize cloud‑hosted database environments.

• Education & Clearance
  • Bachelor's degree in an area relevant to the position with 12 or more years of relevant experience;
    Master's degree with 10 or more years of relevant experience; or Ph.D. with 8 or more years of relevant experience. An additional 4 years of experience may be considered in lieu of a degree.
  • Active TS/SCI or SCI eligibility and active polygraph or ability to obtain a polygraph.
• Certifications
  • Security+ or another IAT II/III level certification.
• Technical Expertise
  • Strong expertise in Postgre
    
    SQL, including SQL and PL/pgSQL, as well as database design (tables, indices, schemas, triggers, stored procedures).
  • Hands‑on experience with either Mongo
    
    DB or Oracle Database.
  • Advanced troubleshooting skills, database performance analysis and optimization.
  • Database migration experience (Oracle‑to‑Postgre
    
    SQL migrations are strongly desired).
  • Ability to work full‑time in a SCIF environment, with flexibility for travel as needed.
• Soft Skills
  • Ability to work in a fast‑paced Agile environment collaboratively with diverse technical teams.
  • Strong technical communication and problem‑solving…