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Application Developer with Security Clearance

Company:
MANTECH
Location:
Chantilly, VA, 20151
Posted:
May 02, 2026
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Description:

MANTECH seeks a motivated, career and customer-oriented Application Developer to join our team in Chantilly, VA The Application Developer will be dedicated full-time to development and enhancement support for existing applications as well as new development. Responsibilities include but are not limited to: * Designing, programming/developing, and modifying software systems, applications, and tools, both existing and potentially new in the future

* Analyzing user needs and software requirements to determine feasibility of design within time and cost constraints

* Collaborating with teammates, other service providers, vendors, and users to develop new program features

* Developing unit and integration tests, in addition to participating in functional and regression tests to ensure programs will produce the desired results and that instructions are correct

* Correcting errors by making the appropriate changes and then re-checking the program to ensure the desired result was produced. As well as, reviewing help desk messages periodically and working with other teams to troubleshoot and resolve production issues

* Participating in code reviews by reviewing and incorporating feedback from teammates as well as providing feedback to others based on existing standards and recommended programming practices.

* Deploying code to development, test, and production environments using existing DevOps infrastructure/tools

Minimum Qualifications: * High School Diploma/GED with 7+ years of experience in the Information Technology field

* Strong Java programming/development skills, with hands-on experience

* Experience with HTML, CSS, JavaScript, and at least one modern front-end framework, preferably Angular

* Experience with, or knowledge of, the Spring Framework and RESTful services and SQL, ORM libraries such as Hibernate/JPA

* Experience with Git branching and merging within a team to manage source code

Preferred Qualifications: * Strong ability to manage competing priorities and communication to multiple stakeholders

* Experience with, or knowledge of, Elasticsearch

* Experience with, or knowledge of, best practices for developing secure web applications

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

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