Database Engineer – Senior Level (PostgreSQL/MongoDB/Oracle)

Peraton; Virginia (MN); On-site; USD 130,000 - 170,000; Full time

Job summary

Peraton is seeking a hands-on Senior Database Engineer to design, implement, and sustain mission-critical database systems (PostgreSQL, MongoDB, Oracle).

You will drive database performance, migrations, and modernization in a fast-paced, secure SCIF environment, collaborating with engineers and stakeholders to ensure reliability and security.

Qualifications

• Bachelor’s degree with 12+ years relevant experience; Master’s with 10+; or Ph.D. with 8+ years.
• Active TS/SCI clearance or SCI eligibility and polygraph.
• Security+ or IAT II/III certification.
• Strong PostgreSQL/SQL/PL/pgSQL expertise and database design.
• Hands-on experience with MongoDB or Oracle Database.

Responsibilities

• Design, develop, analyze, and optimize database systems (PostgreSQL, MongoDB, Oracle).
• Perform database modeling, relational architecture, metadata, and schema management.
• Design and implement complex structures like tables, indices, triggers, and stored procedures.
• Advanced performance tuning, query optimization, and high-reliability configs.
• Develop and support PostgreSQL databases using SQL/PL/pgSQL and related languages.
• Collaborate in an Agile environment with cross-functional teams; support migrations.

Skills

PostgreSQL

SQL

PL/pgSQL

MongoDB

Oracle DB

Agile teamwork

Technical communication

Database design

Education

Bachelor’s degree + 12+ yrs

Master’s degree + 10+ yrs

PhD + 8+ yrs

Active TS/SCI clearance

Security+ or IAT II/III

Tools

Jenkins

Git

Artifactory

AppDynamics

Job description

Required Qualifications

To qualify for this position, candidates must have the following:

Education & Clearance:

• Bachelor’s degree in an area relevant to the position with 12 or more years of relevant experience; Master’s degree in an area relevant to the position with 10 or more years of relevant experience; or Ph.D. with 8 or more years of relevant experience will also be considered. An additional 4 years of experience may be considered in lieu of a degree.
• ActiveTS/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 inPostgreSQL, including SQL and PL/pgSQL, as well as database design (tables, indices, schemas, triggers, stored procedures).
• Hands-on experience with eitherMongoDBorOracle Database.
• Advanced troubleshooting skills, database performance analysis and optimization.
• Database migration experience (Oracle-to-PostgreSQL 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-pacedAgileenvironment collaboratively with diverse technical teams.
• Strong technical communication and problem-solving abilities.

Desired Qualifications

The best candidates will bring experience in some of the following:

• Familiarity with cross-domain systems and/or implementingRow-Level Security.
• CI/CD practices with exposure to tools likeJenkins,Git, andArtifactory.
• Monitoring experience with tools such asAppDynamicsor similar.
• Expertise withdatabase upgrades and modernization efforts, particularly migrating legacy Oracle systems to PostgreSQL.
• AWS experience—such as configuring and optimizingAmazon RDS databasesor other AWS cloud services.
• Experience withSTIG hardeningof databases or compliance auditing for secure environments.
• Automated testing tools likeSeleniumorRobot Framework.

We are seeking a hands-onSenior Database Engineerto support the design, implementation, optimization, and sustainment of mission-critical database systems. This role emphasizes expertise inPostgreSQLand demonstrated experience withMongoDBand/orOracledatabase 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.

Responsibilities

As aSenior Database Engineer, your responsibilities will include but are not limited to:

Database Design & Development:

• Designing, developing, analyzing, and optimizing database systems (PostgreSQL, MongoDB, 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 PostgreSQL databases usingSQL,PL/pgSQL, or procedural database languages likePL/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-PostgreSQL migration activities or integrating MongoDB 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 AppDynamics 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.