Application Developer

General information

Requisition #

R67992

Locations

USA-VA-Chantilly

Posting Date

05/21/2026

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 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

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 careers@mantech.com and provide your name and contact information.