**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/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, so others are able to understand and use it. Also, work closely with data scientists to craft data pipelines which serve the development of modern AI/ML workflows + Collaborating with teammates, other service providers, vendors, and users to develop new and more efficient methods + Effectively articulating the risks and constraints associated with software solutions, based on environment **Minimum Qualifications:** + High School Diploma/GED with 5+ years software development/programming experience. + Demonstrated data analysis, parsing, and programming language experience (e.g. Python, Java) coupled with significant SQL/database experience. + 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, and experience with RESTful APIs. + Experience with data pipelining systems (e.g. Apache Airflow) and developing/performing ETL tasks in a Linux environment. **Preferred Qualifications** : + Experience deploying systems that leverage AI/ML technology + Experience publishing results in BI dashboards. **Clearance Requirements:** + An active TS/SCI with Polygraph **Physical Requirements:** + Use hands to operate a computer and other office productivity machinery, such as a calculator, copy machine and computer printer. + The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc. + Must be able to remain in a stationary position 50% of the time ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.