Data Engineer – TS/SCI Clearance with Polygraph

Cornerstone Defense LLC; Herndon (VA); On-site; USD 120,000 - 170,000; Full time

Benefits offered by this job

Generous PTO Policy

401(k)

HSA and FSA options

Life and Disability Insurance

Tuition Reimbursement and Training

Perks at Work Discount Program

Referral Program

Leads Generation Program

CollegeAmerica 529

Fitness Reimbursement Program

Travel Assistance

Norton Lifelock Benefit Solutions

Life Planning Financial & Legal Sev

Job summary

Cornerstone Defense LLC is seeking a Data Engineer to design and maintain data pipelines, collaborate with development teams, and deliver reliable data solutions that transform data into actionable insights at scale.

The role requires a TS/SCI with Polygraph clearance, a Master’s degree in CS/IS/Engineering, and hands-on experience with Python, SQL, and AWS. You will work with relational databases such as PostgreSQL, Oracle, or MySQL in a collaborative environment based in Herndon, VA.

Qualifications

• Masters degree in Computer Science, Information Systems, Engineering, or related field with equivalent practical experience.
• 4+ years of experience developing or maintaining data pipelines with development teams.
• 2+ years hands-on experience with Python.
• Experience with AWS cloud services for data infrastructure and workflows.
• Proficiency in SQL queries for data retrieval, transformation and analysis.
• Experience with relational databases (PostgreSQL, Oracle, MySQL).
• Experience with Linux environments and shell scripting.
• Experience handling structured and unstructured data including JSON formats.

Responsibilities

• Design and maintain data pipelines that support ingestion, transformation and delivery of large datasets.
• Collaborate with software developers and engineering teams to integrate data solutions into existing systems and applications.
• Prepare and structure data outputs in usable formats for analysis and downstream systems, including JSON.

Skills

Python

SQL

Data pipelines

Linux shell

AWS

JSON

PostgreSQL

Oracle

MySQL

Data transformation

Education

Master's degree in CS/IS/Engineering

Tools

Apache NiFi

Apache Airflow

EMR

SPARC

Hive

Iceberg

Job description

Cornerstone Defense LLC is seeking a Data Engineer to design and maintain data pipelines, collaborate with development teams, and deliver reliable data solutions that transform data into actionable insights at scale.

The role requires a TS/SCI with Polygraph clearance, a Master’s degree in CS/IS/Engineering, and hands-on experience with Python, SQL, and AWS. You will work with relational databases such as PostgreSQL, Oracle, or MySQL in a collaborative environment based in Herndon, VA.