Application Developer - TS/SCI with Poly (Chantilly)

MANTECH; Chantilly (VA); On-site; USD 90,000 - 120,000; Full time

Job summary

MANTECH seeks an Application Developer to join our Chantilly, VA team. This full-time role will focus on developing and enhancing existing applications as well as new software components, collaborating across teams to deliver features and fixes.

The ideal candidate will bring strong Java, front-end skills, and experience with Spring/REST and SQL, plus Git workflows and DevOps deployment support. Responsibilities include designing and coding software, testing, debugging production issues, and

Qualifications

• High School Diploma or GED with 7+ years in IT; relevant security clearance may apply.
• Strong Java development skills with hands-on experience and modern frontend basics.
• Experience with Angular, Spring, REST, SQL, and ORM (Hibernate/JPA); Git used in teamwork.

Responsibilities

• Design, develop, and modify software systems and tools, existing and new.
• Analyze user needs and feasibility within time and cost constraints.
• Collaborate with teammates, vendors, and users to add new features.
• Develop unit/integration tests and participate in functional/regression tests.
• Fix defects, review production issues, and support deployments via DevOps.
• Participate in code reviews and apply feedback per standards.
• Deploy code to development, test, and production environments.

Skills

Java development

HTML/CSS/JavaScript

Angular

Spring Framework

RESTful services

SQL / Hibernate

Git

Education

High School Diploma/GED with 7+ years IT experience

Tools

Elasticsearch

Job description

MANTECH seeks an Application Developer to join our Chantilly, VA team. This full-time role will focus on developing and enhancing existing applications as well as new software components, collaborating across teams to deliver features and fixes.

The ideal candidate will bring strong Java, front-end skills, and experience with Spring/REST and SQL, plus Git workflows and DevOps deployment support. Responsibilities include designing and coding software, testing, debugging production issues, and