Data Engineer Full Performance with Security Clearance

Cornerstone Defense; 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

Title: Data Engineer Full Performance

Location: Herndon, VA

Clearance:

Active TS/SCI w/ Polygraph needed to apply

Company Overview:

Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation's toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don't look any further than Cornerstone Defense.

Benefits Overview :

Cornerstone Defense offers a very comprehensive benefits package including, but not limited to: Medical, Dental and Vision Plans

• 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 Services

Seeking a highly motivated, self-directed professional for a Data Engineering role. In this role, you will design and maintain data pipelines, collaborate closely with development teams, and help deliver reliable data solutions that enable teams to transform data into actionable insights.

Required Qualifications:

• Active TS/SCI with Polygraph clearance.
• A Master's degree in Computer Science, Information Systems, Engineering, or additional years of specialized experience in a scientific or technical discipline.
• Build and maintain reliable data pipelines that support ingestion, transformation, and delivery of large datasets
• Partner with software developers and engineering teams to integrate data solutions into existing systems and applications
• Develop and optimize SQL queries to support data retrieval, transformation, and analysis
• Work with relational databases such as PostgreSQL, Oracle, and MySQL to store, manage, and access data
• Develop scripts and automation using Python, Linux, and shell scripting to support data processing tasks
• Operate within AWS environments to support cloud-based data infrastructure and workflows
• Prepare and structure data outputs in usable formats for analysis and downstream systems, including JSON
• 4+ years of experience developing or maintaining data pipelines in collaboration with development teams
• 2+ years of hands‑on experience with Python
• Experience working with AWS cloud services
• Familiarity with SPARC environments and relational databases including PostgreSQL, Oracle, or MySQL
• Demonstrated experience writing and maintaining SQL queries
• 2+ years of experience working in Linux environments, including shell scripting
• Experience preparing and managing structured and unstructured datasets, including JSON formats

Desired Qualifications:

• Excellent communication and collaboration skills.
• Experience with workflow orchestration tools such as Apache NiFi or Apache Airflow
• 2+ years of development experience with Java or Scala
• Experience managing or supporting EMR or SPARC clusters
• Background in performance tuning and optimization of data pipelines or large data systems
• 2+ years of experience working with Hive or Iceberg
• Familiarity with implementing cloud-based security practices
• Experience using ACM processes for code deployment