Application Developer, CHANTILLY, VA


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Full time

Posted 26 Days Ago


Secure our Nation, Ignite your Future

Join the top Information Technology and Analytic professionals in the industry to make invaluable contributions to our national security on a daily basis. In this innovative, self-contained, Big Data environment, the ManTech team is responsible for everything from infrastructure, to application development, to data science, to advanced analytics and beyond. The team is diverse, the questions are thought-provoking, and the opportunities for growth and advancement are numerous.


The successful candidate will be dedicated full-time to development and enhancement support for existing applications as well as new development.

Duties, Tasks & Responsibilities

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

Correcting errors by making the appropriate changes and then re-checking the program to ensure the desired result was produced

Conducting testing of program and software applications to be sure they will produce the desired results and that instructions are correct

Organizing and maintaining documentation of application development and subsequent revisions, so others are able to understand the program

Collaborating with teammates, other service providers, vendors, and users to develop new programming methods

Required Experience, Skills, & Technologies

Bachelor’s Degree in Computer Science, Information Systems, Engineering, or other related discipline, or 4+ years of related software development experience may be substituted for education

9 years or more development/programming experience

Strong Java programming/development skills and experience

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

Experience with Spring and ORM libraries such as Hibernate/JPA

Experience working and interacting with different types of data stores (e.g. Oracle, Elasticsearch)

Experience with RESTful services

Experience with Ext JS (v3 and v4), Groovy (v2), Grails (v2), and Bootstrap (v3+)

Understanding of SQL and Elasticsearch

Strong ability to manage competing priorities and communication to multiple stakeholders

Security Clearance Requirements:

TS/SCI w/ Polygraph

Desired Experience, Skills & Technologies

Cloud experience, particularly AWS

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.

Constantly positions self to maintain computers in the lab, including under the desks and in the server closet

#LI-AA1 , #joinmantechd #joinmantechaa

For all positions requiring access to technology/software source code that is subject to export control laws, employment with the company is contingent on either verifying U.S.-person status or obtaining any necessary license. The applicant will be required to answer certain questions for export control purposes, and that information will be reviewed by compliance personnel to ensure compliance with federal law. ManTech may choose not to apply for a license for such individuals whose access to export-controlled technology or software source code may require authorization and may decline to proceed with an applicant on that basis alone.

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 because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.

If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech’s Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer – minorities, females, disabled and protected veterans are urged to apply. ManTech’s utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services.

If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access as a result of your disability. To request an accommodation please contact and provide your name and contact information.

ManTech / Equal Opportunity Employer

JBMAN-R37861 2023.07.16

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