Data Engineer

ManTech; Chantilly (NC); On-site; USD 115,000 - 190,000; Full time

Job summary

ManTech in Chantilly, VA is seeking a Data Engineer to join our team on TS/SCI w/ Poly clearance. You will design, ingest, cleanse, transform, and display large data sets, leveraging big data technologies and RESTful APIs.

You will work with data scientists to build pipelines for AI/ML workflows, optimize the data lifecycle, and collaborate with cross-functional teams to deliver scalable data solutions.

Qualifications

• High School Diploma with 4+ years of relevant data engineering, software development, and/or programming experience.
• Experience with Python or Java for data processing and analytics.
• Significant experience with SQL and database management.
• Experience with the full data lifecycle, from ingest through display, in a Big Data environment.
• Hands-on experience with Java-related technologies, such as JDK, J2EE, EJB, JDBC, and/or Spring.
• Experience with RESTful APIs, data pipelining systems like Apache Airflow, and performing ETL tasks in a Linux environment.

Responsibilities

• Design, implement, and optimize data extraction, cleansing, transformation, loading, and large-scale ingest systems.
• Optimize data lifecycle from planning to display and beyond.
• Develop data pipelines and code to ingest and exploit new data sources.
• Develop data profiling, deduping, and matching logic for analysis.
• Collaborate with data scientists to craft AI/ML pipelines and document data layers.
• Work with teammates, vendors, and users to improve data processing methods.

Skills

Data analysis

Programming

Tools

Python

Java

SQL

Apache Airflow

ETL

Linux

Job description

General information

Requisition #

R71435

Locations

USA-VA-Chantilly

Posting Date

10/16/2026

Security Clearance Required

TS/SCI w/ Poly

Remote Type

Onsite

Time Type

Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH!

MANTECH seeks a motivated, career and customer-oriented Data Engineer to join our team in Chantilly, VA.

The Data Engineer will leverage their development skills and experience to support the successful designing, ingesting, cleansing, transformation, loading, and display of significant amounts of data.

Responsibilities include but are not limited to:

• Designing, implementing, and optimizing data extraction, cleansing, transformation, loading, replication/distribution, and large-scale ingest systems in a Big Data environment.
• Optimizing all stages of the data lifecycle, from initial planning to ingest through final display and beyond.
• Developing custom solutions or code to ingest and exploit new and existing data sources.
• Developing data profiling, deduping logic, and matching logic for analysis.
• Organizing and maintaining Data Layer documentation while working with data scientists to craft pipelines for AI/ML workflows.
• Collaborating with teammates, service providers, vendors, and users to develop more efficient methods.
• Effectively articulating the risks and constraints associated with software solutions based on the environment.
  

Minimum Qualifications:

• High School Diploma with 4+ years of relevant data engineering, software development, and/or programming experience.
• Demonstrated data analysis, parsing, and programming language experience such as Python or Java.
• Significant experience with SQL and database management.
• Experience with the full data lifecycle, from ingest through display, in a Big Data environment.
• Hands-on experience with Java-related technologies, such as JDK, J2EE, EJB, JDBC, and/or Spring.
• Experience with RESTful APIs, data pipelining systems like Apache Airflow, and performing ETL tasks in a Linux environment.
  

Preferred Qualifications :

• Experience deploying systems that leverage AI/ML technology.
• Experience publishing results in BI dashboards.
• Self-starter with excellent people skills able to work across teams and drive change.
  

Clearance Requirements :

• An active TS/SCI with Polygraph is required for this position.
  

Physical Requirements:

• Must be able to remain in a stationary position 50% of the time.
• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.
• Must be able to exchange accurate information in these situations.

The projected compensation range for this position is $114,600.00-$190,200.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH's benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at [e-mail] and provide your name and contact information.