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# Systems Engineer (TS/SCI Clearance with Full Scope Polygraph Required)

- **Company:** J&T Business Consulting
- **Location:** Columbia, MD, United States
- **Experience:** Expert
- **Salary:** $175,000.0 - $210,000.0
- **Contract:** Permanent contract
- **Skills:** Business Analytics Applications, Data Analysis, Systems Engineering, Databases, Data Architecture, Data Cleansing, Data Integrity, Data Security, Data Structures, Data Visualization, Relational Databases, Database Design, Database Models, PostgreSQL, Oracle Databases, Oracle (Applications), Reverse Engineering, Search Technologies, SQL Databases, Data Processing, Freeform SQL, Data Layers, Information Technology, Front End Software Development, Legacy Systems
- **Published:** October 13, 2026
- **Apply:** https://www.careerjet.com/job/us82c09fbc94f10c8461ef6cbc8f1a2d81/eaa

## About the Role

Security Clearance: Active TS/SCI with Polygraph., Bachelor's degree in Computer Science, Systems Engineering, or a related discipline plus at least 20 years of relevant professional experience, OR
25 years of relevant professional systems engineering/data architecture experience without a degree.
Database & Modeling: Proven expertise in database design, data modeling, and schema normalization.
SQL & RDBMS: Extensive hands-on experience utilizing SQL across relational database management systems (e.g., Oracle, PostgreSQL).
Reverse Engineering: Demonstrated experience reverse engineering complex software systems across both front-end interfaces and back-end data layers.
Data Processing: Proven track record in data analysis, data cleansing, normalization, and data security governance.
Desired Qualifications
Advanced experience with Oracle database architectures.
Prior working knowledge of BM&A systems.

## Description

Seeking a senior Systems Engineer 3 to support a mission-critical initiative delivering advanced visualization and presentation services for analytic tool prototyping, development, and production in Columbia, MD.
In this role, you will collaborate within a small, high-impact team dedicated to reverse engineering approximately 40 legacy databases into a unified, universal data model. You will play a central role in enabling efficient data analysis, discovery, and search capabilities, driving the end-to-end migration of legacy business data to a modernized platform., Reverse engineer legacy systems across both front-end and back-end architectures to map existing data structures and workflows.
Design, architect, and develop unified database models to consolidate ~40 disparate databases into a single universal system.
Author and optimize complex SQL queries within relational database environments (e.g., Oracle, PostgreSQL).
Perform comprehensive data analysis, normalization, cleansing, and validation to ensure data integrity during migration.
Implement robust data security best practices throughout system modeling, extraction, and migration phases.
Support data visualization, presentation services, and prototyping for downstream analytic tools.