UI​/UX Engineer Security Clearance

Position: UI/UX Engineer with Security Clearance
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- Description 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.

Primary Responsibilities:

* 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

Required Qualifications
* 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 Desired Qualifications
* Certification - Amazon Web Services (AWS) FIP If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:
January 30, 2026 For U.S. Positions:
While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range:
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 (but are not limited to) 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.

About Leidos 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…