Senior UI/UX Web Developer
22060, Virginia
Experience: 0
Category: Information Technology
Contractor Work Model: Remote
Brand: System One
Compensation Range: 100000.00 - 200000.00
Job ID: 382235
Date Posted: 10/22/2026
Shortcut: http://jobs.systemone.com/Jjvh0t
Job Title: Senior UI/UX Web Developer
Role Type: Direct Perm / Full Time Salaried
Location: Remote, with occasional travel to Fort Belvoir, VA
Clearance Requirement: Active Secret Clearance
Position Overview
We are seeking a talented Senior UI/UX Web Developer to design, develop, and optimize user-centered websites and web applications that combine intuitive design, accessibility, and high-performance functionality. This role requires a strong blend of UI/UX design expertise and front-end development skills to deliver engaging, responsive, and accessible digital experiences.
The ideal candidate has a solid understanding of user-centered design principles, proficiency in industry-standard design tools, and hands-on experience developing modern web applications using HTML5, CSS3, JavaScript, and contemporary JavaScript frameworks. You will collaborate with cross-functional teams to translate user needs and business requirements into effective design solutions and production-ready code.
This position is primarily remote, with occasional visits to Fort Belvoir, Virginia. Candidates must possess an active Secret security clearance and CompTIA Security+ certification or an equivalent qualification.
Key Responsibilities
- UI/UX Design: Develop wireframes, user flows, storyboards, mockups, and interactive prototypes to communicate and validate user experiences.
- Front-End Development: Translate design concepts into clean, maintainable, production-ready code using HTML5, CSS3, JavaScript, and related technologies.
- User Research and Testing: Conduct user research, develop user personas, perform usability testing, and refine interfaces based on user feedback and findings.
- Responsive Design and Accessibility: Build responsive, accessible web interfaces optimized for performance across devices and browsers, ensuring compliance with applicable accessibility standards, including WCAG.
- Modern Web Frameworks: Develop and maintain front-end applications using frameworks such as React, Vue.js, or Angular.
- Design Tools: Create and maintain high-fidelity design assets using Adobe Creative Suite and tools such as Figma, Sketch, or Adobe XD.
- Cross-Functional Collaboration: Work closely with product managers, backend engineers, and other stakeholders to align design and development efforts with user needs and project objectives.
- Version Control and Code Management: Use Git-based version control systems, preferably GitLab, to manage source code, track changes, and support collaborative development.
- Problem-Solving and Optimization: Identify usability challenges, troubleshoot front-end issues, and continuously improve the functionality, accessibility, and overall quality of digital products.
Required Qualifications
- U.S. citizenship. Dual citizens may be considered, subject to applicable security clearance requirements.
- Active Secret security clearance required.
- CompTIA Security+ certification or an equivalent certification.
- Strong proficiency in HTML5, CSS3, JavaScript, and front-end web development.
- Experience with modern JavaScript frameworks, such as React, Vue.js, or Angular.
- Proficiency in Adobe Creative Suite and experience with UI/UX design tools such as Figma, Sketch, or Adobe XD.
- Experience with Git or other version control systems; GitLab experience preferred.
- Strong understanding of user-centered design principles, usability best practices, responsive design, and web accessibility standards.
- Excellent analytical, critical-thinking, and problem-solving skills.
- Ability to communicate effectively and collaborate with multidisciplinary teams.
Preferred Qualifications
- Experience designing and developing complex websites or web applications.
- Experience conducting usability studies, analyzing user feedback, and translating research findings into actionable design improvements.
- Familiarity with accessibility guidelines, including WCAG, and accessible front-end implementation practices.
- Experience integrating front-end interfaces with backend services and APIs.
- Familiarity with collaborative software development workflows and modern code management practices.
System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.
System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.
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Ref: #851-Rockville-S1
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⚠️ Protecting Job Seekers from Identity Scams
At System One, your privacy and security are important to us. As job-related scams continue to target job seekers, we want to help you recognize and avoid common recruitment fraud. Identity theft scams often involve individuals, also known as "scammers," posing as recruiters or employers to obtain sensitive personal information, such as Social Security numbers, bank account details, or copies of driver’s licenses, with the goal of stealing identities, accessing financial accounts, or creating fraudulent accounts in a victim’s name.