UI​/UX Engineer

Overview

Leidos has immediate opportunities for a UI/UX Engineer to join a team building innovative software supporting the Sponsor’s Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization, Attributes and Digital Policy Management. We're supporting a well-established customer that is responsible for critical and high-visibility missions applications used by a wide audience. Our team is tremendously talented, and we need to add a talented and creative UIUX Engineer to the team.

As a UI/UX Engineer you will build custom and accessible websites, with the user experiences in mind for both admins and end users. You will optimize code within the code base, assist with design, implementation and deployment, and partner on QA testing and bug-fixing. Your role will help determine appropriate tools, methods, and solutions for projects, bridging design, development, and production of websites.

The position requires strong organizational and time management skills as individuals work in a fast-paced environment with multiple projects. Successful candidates must be hands-on but also strategic, with excellent communication skills.

• Proven ability to create well-structured and maintainable Word Press site themes from scratch.
• Proficiency in developing Word Press plugins to support custom site functionality and integrations.
• Good eye for design and attention to detail
• Improve the overall efficiency of the website’s back-end including database and server integration
• Maintain and optimize the Word Press theme and plugins
• Conduct website performance tests, and execute performance enhancements to improve site speed
• Monitor the performance of the live website and troubleshoot content and user experience issues that arise
• Responsible for both back-end and front-end development including the implementation of Word Press themes and plugins as well as site integration

• Effective interpersonal and communication skills are required to perform well as a member of a rapid paced, cross-functional team environment.
• Utilize agile development methodology

• Active TS/SCI with Polygraph
• Requires BS degree and
  12+ years of prior relevant. Additional experience in lieu of degree.
• Understanding of usability and accessibility issues across all device types
• Experience with Word Press front-end development using the following technologies: HTML5, SASS (or equivalent preprocessor)/CSS, and Java Script
• Experience with Word Press back-end development using the following technologies: PHP, MySQL, WP REST API, JSON
• Developing custom features and functionality for Word Press
• Creating Word Press plugins
• Producing unit testing and QA
• Developing and Testing for Accessibility

• Certification - Amazon Web Services (AWS)

January 30, 2026

Pay Range $ - $

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit

Pay and benefits are fundamental to any career decision. That’s why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at

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