Expert UI/UX Developer

MANTECH•Herndon, VA

5d•$179,300 - $318,400•Onsite

About The Position

MANTECH is seeking a motivated, career- and customer-oriented Expert UI/UX Developer to join its team in Herndon, Virginia. The role supports an elite team of Software Developers, Data Engineers, and System Engineers developing and deploying capabilities for the Intelligence Community. The developer will architect and implement responsive front-end applications, translate complex user and mission needs into maintainable software, create high-fidelity designs, and contribute throughout the software development lifecycle. The position requires an active/current TS/SCI clearance with Polygraph and is onsite.

Requirements

High school diploma and 15 or more years of software development experience.
At least 5 years of UI/UX development experience.
Experience with Vue.js, modern JavaScript, HTML5, and CSS3.
Backend development or scripting experience using Python.
Experience with cross-platform development across Linux and Windows.
Ability to lead technical teams and mentor junior and mid-level developers.
Active/current TS/SCI clearance with Polygraph.

Nice To Haves

Bachelor’s degree in Computer Science, Software Engineering, Information Systems, or a related technical discipline.
Experience developing scalable server-side applications using Node.js.
Strong working knowledge of Agile/Scrum methodologies and practices.
Familiarity with software accessibility standards and compliance guidelines, such as ADA compliance and Section 508.
Experience with enterprise version control and CI/CD pipelines using GitLab or GitHub.

Responsibilities

Architect, design, and implement responsive front-end applications using UI/UX principles to deliver intuitive user workflows.
Analyze complex user and mission requirements and design robust, scalable, maintainable software components.
Create high-fidelity design mockups and wireframes for new product features to gain customer and stakeholder buy-in before sprint implementation.
Collaborate with cross-functional team members to assess baseline functionality and plan integration paths.
Execute unit testing, support automated test suites, and coordinate with independent verification and validation (IV&V) teams before production deployments.
Participate in Agile/Scrum ceremonies, including sprint planning, backlog grooming, daily stand-ups, and retrospectives.
Maintain clear communication across development teams, project leadership, and end-user stakeholders.
Promote engineering excellence, troubleshoot root causes, and drive continuous process improvements across the software development lifecycle.