Mid-Level UI/UX Developer

Leidos Inc; Gaithersburg (MD); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos is seeking a Mid-Level UI/UX Developer to design and develop intuitive, user-centered interfaces for mission-critical applications. This role bridges design and engineering, delivering production-ready front-end solutions while collaborating with backend engineers and product owners.

The ideal candidate has strong UX principles, front-end development experience with React/Angular, and is capable of translating complex workflows into clean interfaces.

Qualifications

• Bachelor's degree in CS, software engineering or related field.
• Master's degree with 2-6 years of relevant experience is preferred.
• Strong experience with front-end technologies (JavaScript, HTML, CSS).
• Experience with modern UI frameworks (React, Angular).
• Demonstrated experience designing user-centered interfaces for complex applications.
• Understanding of UX principles, usability and interaction design.
• Experience working in Linux-based environments.

Responsibilities

• Design and develop intuitive, responsive UI for web-based applications.
• Translate complex workflows into simple, efficient user experiences.
• Build and maintain front-end components using modern frameworks (React, Angular).
• Ensure applications meet usability and accessibility standards.
• Contribute to design systems and maintain style guides.
• Gather and incorporate user feedback to improve interfaces.
• Collaborate with backend engineers, product teams, and stakeholders.
• Improve front-end performance and scalability.

Skills

JavaScript

HTML

CSS

Education

Bachelor's degree in Computer Science, Software Engineering, or related field

Master's degree (2-6 years)

Tools

React

Angular

Job description

Description

Ready to design technology that makes a difference? At Leidos, you'll help shape the future of intelligence operations by creating intuitive, high-impact user experience for mission-critical systems. As a UI/UX Developer supporting a premier Intelligence Community customer, you'll turn complex challenges into elegant solutions, working alongside innovative teams to deliver capabilities that strengthen national security. This is an opportunity to see your designs move beyond the screen and directly support real-world missions of national importance.

Leidos Intelligence Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support our defense and intel customers' mission to defend against evolving threats around the world. Our team's focus is to ensure our customers have the right tools, technologies, and tactics to keep pace with an ever-evolving security landscape and succeed in their pursuit to protect people and critical assets.

Geospatial Analyst Solutions Directorate, part of the National Solutions Business Area, is currently seeking a skilled and experienced Mid-Level UI/UX Developer for the Maru Program.The Maru Program delivers mission-critical, modern software solutions across our customer's enterprise using Agile,DevSecOps, and cloud-native methodologies.

As a UI/UX Developer, you will design and develop intuitive, user-centered interfaces for mission-critical applications. This role bridges design and engineering, focusing on creating seamless user experiences while delivering production-ready front-end solutions.

The ideal candidate has a strong foundation in user experience design, front-end development, and usability principles, with the ability to translate complex technical workflows into clean, efficient, and accessible interfaces. This individual will work closely with backend engineers, product owners, and end users to improve usability, performance, and overall user satisfaction.

Clearance Level Required

Active TS/SCI with the ability to successfully pass a Polygraph examination.

Essential Responsibilities

• UI/UX Design & Implementation: Design and develop intuitive, responsive user interfaces for web-based applications
• User Experience Optimization: Translate complex workflows into simple, efficient user experiences that improve usability and adoption
• Front-End Development: Build and maintain front-end components using modern frameworks (e.g., React, Angular, or similar)
• Usability & Accessibility: Ensure applications meet usability standards and accessibility best practices
• Design Systems: Contribute to and maintain consistent design patterns, components, and style guides
• User Research & Feedback: Gather and incorporate user feedback to continuously improve interface design and functionality
• Cross-Functional Collaboration: Work closely with backend engineers, product teams, and stakeholders to align UI/UX with system capabilities
• Performance Optimization: Improve front-end performance, responsiveness, and scalability

Basic Qualifications

• US citizenship is required per contract
• Bachelor's degree in Computer Science, Software Engineering, or related field with4-8 years of relevant experience or Master's degree with2-6 years of relevant experience
• Strong experience with front-end technologies (JavaScript, HTML, CSS)
• Experience with modern UI frameworks (React, Angular, etc.)
• Demonstrated experience designing user-centered interfaces for complex applications
• Understanding of UX principles, usability, and interaction design
• Experience working in Linux-based environments
• Ability to translate user needs into functional design solutions

Preferred Qualifications

• Experience with design tools (Figma, Sketch, Adobe XD)
• Experience with data visualization tools (e.g., Grafana or similar)
• Familiarity with REST APIs and backend integration
• Exposure to CI/CD pipelines and front-end deployment workflows
• Experience working in Agile environments
• Experience designing and developing intuitive user interfaces for data-driven GEOINT applications.

#Maru

#NSBA

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: August 28, 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 $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline onlyand 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 approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

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 www.leidos.com/careers/pay-benefits.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.