ManTech

Government cybersecurity, analytics, and IT services

Expert UI/UX Developer

Frontend EngineeringConfirmed live in the last 24 hours

Full-timeHerndon, VA, USA$179.3k - $318.4kIn-person

About the Job

Requirements

A high school diploma and 11 or more years of software development experience are required.
At least 5 years of UI/UX development experience are required.
Experience with Vue.js, modern JavaScript, HTML5, and CSS3 is required.
Backend development experience or scripting experience developing in Python is required.
Cross-platform development experience across Linux and Windows is required.
Ability to lead technical teams and mentor junior and mid-level developers is required.
An active/current TS/SCI with Polygraph clearance is required.

Responsibilities

Architect, design, and implement responsive front-end applications using UI/UX principles to deliver 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 obtain customer and stakeholder buy-in before sprint implementation.
Collaborate with cross-functional team members to assess existing baseline functionality and plan integration paths.
Execute unit testing, support automated test suites, and coordinate with independent verification and validation teams before production deployments.
Participate in Agile/Scrum ceremonies, including sprint planning, backlog grooming, daily stand-ups, and retrospectives.
Maintain communication across development teams, project leadership, and end-user stakeholders.
Troubleshoot root causes and drive engineering excellence and continuous process improvement across the software development lifecycle.

Desired Qualifications

A bachelor's degree in Computer Science, Software Engineering, Information Systems, or a related technical discipline is preferred.
Experience developing scalable server-side applications using Node.js is preferred.
Knowledge of Agile/Scrum methodologies and framework practices is preferred.
Familiarity with software accessibility standards and compliance guidelines, including ADA compliance and Section 508, is preferred.
Experience with enterprise version control and CI/CD pipelines using GitLab or GitHub is preferred.

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

MANTECH seeks a motivated, career and customer-oriented Expert UI/UX Developer to join our team in Herndon VA. In this role you will work with an elite team of Software Developers, Data Engineers, and System Engineers who are developing and deploying unprecedented capabilities for the Intelligence Community.

Responsibilities include, but are not limited to:

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).

Minimum Qualifications:

High School Diploma and 11+ 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.

Preferred Qualifications:

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 framework practices.
Familiarity with software accessibility standards and compliance guidelines (e.g., ADA compliance / Section 508).
Experience with enterprise version control and CI/CD pipelines utilizing GitLab or GitHub.

Clearance Requirements: Active/current TS/SCI with Polygraph is required for this position

Physical Requirements: Must be able to remain in a stationary position 50% of the time

The projected compensation range for this position is $179,300.00-$318,400.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at [email protected] and provide your name and contact information.

About the Company

ManTech

Government cybersecurity, analytics, and IT services

ManTech provides technology and services to U.S. government customers in defense, intelligence, and federal civilian agencies. It delivers cybersecurity, data analytics, enterprise IT, logistics, intelligence lifecycle support, software development, systems engineering, mission operations, security, and training through government contracts that span strategy to operations with strict security compliance. Its differentiators include a national-security focus, end-to-end capabilities, long-term high-value contracts, and emphasis on specialized talent. The company aims to help government agencies modernize and protect critical infrastructure while pursuing sustainable growth and profitability.

Company size: 10,001+
Company stage: IPO
Headquarters: Herndon, VA
Founded: 1968

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