Senior Frontend Java Developer | ST ManTech Advanced Systems Intl | Remote (US)

Filled
February 20, 2026
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Job Description

Location: Remote (United States)
Seniority: Senior

Role Overview

ManTech is seeking a Senior Frontend Java Developer to work on CBP (U.S. Customs and Border Protection) analytic applications, building user-focused, object-oriented, data-driven interfaces. This role involves UI/UX development, application integration, mentoring junior developers, and supporting mission-critical federal projects.

Key Responsibilities

  • Develop and maintain frontend, object-oriented, data-driven analytic applications.
  • Implement CBP Common Framework-compliant UI/UX, ensuring clarity, consistency, and usability.
  • Build tutorials, job aids, and documentation for mission-facing users.
  • Integrate with server-side applications, support deployment, and operations.
  • Write new code, modify existing code, and perform unit and system testing.
  • Document data flows, functional operations, and use cases.
  • Participate in design reviews, solution sessions, and project milestone meetings.
  • Collaborate across project portfolio teams to provide frontend development expertise.
  • Mentor and guide junior developers on best practices.

Required Qualifications

  • Bachelor’s degree in Computer Science or related field.
  • 5+ years of technical experience in frontend development.
  • Expert in modern JavaScript development.
  • Hands-on experience with frameworks such as ReactJS, NodeJS, and React Redux.
  • Experience with frontend build tools: Webpack, Gulp, NPM.
  • Proficiency in UI coding languages: HTML, CSS, JavaScript, JQuery, JSON, AJAX.
  • Hands-on experience with web/application servers: Tomcat, WildFly, WebLogic.
  • Experience with AWS services: EC2, RDS, S3.
  • Strong self-motivation, ability to work in a distributed team, and mentor junior developers.

Desired Qualifications

  • SCM experience with Git.
  • Hands-on experience with relational databases: Oracle, MySQL, Postgres.
  • Proficient in SQL.
  • Familiarity with Atlassian tools: Jira, BitBucket, Bamboo.
  • Experience with CI/CD tools: Jenkins or Bamboo.
  • Agile Scrum participation.

Clearance Requirements

  • Must be a U.S. Citizen able to obtain and maintain CBP Background Investigation clearance.

Physical & Work Requirements

  • Stationary position 50% of the time, occasional movement in the office.
  • Frequent computer usage, communication, and presentations.

Compensation & Benefits

  • Salary Range: $99,200–$164,600 (dependent on experience, contract type, and location).
  • Benefits include Health, Life Insurance, Paid Time Off, Retirement Savings, Learning & Development, and wellness programs.