Front--End Developer; Mid TS​/SCI

Amentum is searching for a Front-End Developer to join our team in Arlington, VA. You will be working in support of a DoW Special Programs customer developing a new application in AWS Gov Cloud. The mission is to modernize and sustain a secure, web-based platform that consolidates critical government workflows, enabling automated data management, role-based access control, and multi-level security capabilities in support of national security operations.

Work is typically performed, Monday through Friday 8-hour days onsite. Flexibility within a 2-week pay period to reach 80 hours.

The Front-End Developer is responsible for

• Develop and maintain scalable, high-performance web applications using modern front-end frameworks.
• Collaborate with UX/UI developers and back-end developers to deliver seamless user experiences.
• Translate design mockups and wireframes into clean, efficient code.
• Optimize applications for maximum speed, scalability, and accessibility.
• Implement responsive designs that work across various devices and screen sizes.
• Ensure cross-browser compatibility and maintain code quality through testing and reviews.
• Stay current with emerging technologies and propose improvements to existing systems.

Office environment with no unusual hazards, occasional lifting to 50 pounds, constant sitting while using the computer terminal, constant use of sight abilities while reviewing documents, constant use of speech/hearing abilities for communication, constant mental alertness, must possess planning/organizing skills, and must be able to work under deadlines.

Minimum of 5 years of experience collectively with the following:

• Proficiency in HTML5, CSS3, JavaScript, and Type Script.
• Experience with modern frameworks/libraries such as Angular, React, or Vue.js.
• Familiarity with RESTful APIs and asynchronous request handling.
• Understanding of version control systems (e.g., Git).
• Strong attention to detail and a passion for clean, maintainable code.
• Exposure to Agile development environments.

TS/SCI
- This position requires an active DoD TS/SCI security clearance that has been adjudicated in the last 5 years or designated CE and the ability to obtain and maintain special accesses.

Bachelor’s degree in information systems engineering, Computer Science, Engineering, Business, or other related fields. In absence of degree, additional years of experience may be substituted for educational requirements.

5-8 Years

• AWS Solutions Architect
  - Associate (minimum);
  Professional preferred
• AWS Sys Ops Administrator
  - Associate or AWS Dev Ops Engineer
  - Professional
• Security+ CE

• Experience supporting a DoW ATO or FedRAMP authorization process
• Familiarity with DISA STIG compliance requirements and implementation
• Experience operating PostgreSQL on Amazon RDS including patching coordination and backup/restore validation
• Experience with Keycloak or equivalent OIDC/SAML identity provider integration in a Gov Cloud environment
• AWS Security
  - Specialty certification
• Git, Git Lab, Terraform, Splunk, Hashi Corp Vault, JIRA, Jenkins, Ansible
• Amazon Web Services Gov Cloud
• Microsoft Windows Server and Linux
• AWS Associate level or above certification

• AWS Security — Specialty.
• ITIL Foundation.

$130,000 - $145,000

The compensation range or hourly rate listed for this position is provided as a good‑faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Empl…