Senior UI/UX Developer – Secure Govt Tech

VueToronto; Herndon (VA); On-site; USD 179,000 - 318,000; Full time

Benefits offered by this job

Health Insurance

Life Insurance

Paid Time Off

Holiday Pay

Short-term Disability

Long-term Disability

Retirement and Savings

Learning and Development opportunities

Wellness programs

Job summary

MANTECH seeks an Expert UI/UX Developer to join our team in Herndon, VA, delivering advanced front-end capabilities for the Intelligence Community. You will design, implement, and test responsive UI components, collaborating with software, data, and systems engineers to meet mission requirements.

You will participate in Agile ceremonies, mentor junior developers, and drive engineering excellence across the SDLC while ensuring accessibility and cross-platform compatibility.

Qualifications

• High School Diploma and 15+ years of experience with software development.
• 5+ years of experience with UI/UX development.
• Experience with Vue.js, modern JavaScript, HTML5, and CSS3.
• Experience with backend development or scripting experience developing in Python.
• Experience with cross-platform development across both Linux and Windows.
• Ability to lead technical teams and mentor junior and mid-level developers.

Responsibilities

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

Skills

UI/UX development

Vue.js

JavaScript

HTML5

CSS3

Python

Team leadership

Education

High School Diploma

Tools

GitLab

GitHub

CI/CD pipelines

Job description

MANTECH seeks an Expert UI/UX Developer to join our team in Herndon, VA, delivering advanced front-end capabilities for the Intelligence Community. You will design, implement, and test responsive UI components, collaborating with software, data, and systems engineers to meet mission requirements.

You will participate in Agile ceremonies, mentor junior developers, and drive engineering excellence across the SDLC while ensuring accessibility and cross-platform compatibility.