**FULLY REMOTE**

ScolerTec Inc. is seeking a highly skilled Senior UI/UX Front-End Engineer to support a modernization program at a federal agency. This is a hands-on UI implementation role focused on the visual and presentation layer of enterprise applications. The selected candidate will work with Human-Centered Design specialists, product owners, architects, and application developers to transform UX research, user workflows, wireframes, and low-fidelity mockups directly into polished, accessible, responsive, and production-ready application screens.

The Senior UI/UX Front-End Engineer will work across multiple development teams to create common and reusable UI components, shared HTML and CSS standards, responsive layouts, and accessible user-interface patterns. The role requires strong visual and interaction-design judgment, along with recent hands-on front-end development experience.

Key Responsilibilites

Translate UX research, requirements, workflows, wireframes, and low-fidelity mockups directly into polished and production-ready application screens.
Develop responsive and accessible user interfaces using HTML5, CSS3, Sass, JavaScript, and ReactJS.
Apply strong UI/UX design judgment involving layout, spacing, typography, visual hierarchy, responsive behavior, and interaction design.
Make appropriate visual and interaction decisions when complete high-fidelity mockups are not available.
Develop reusable ReactJS components, templates, styles, and shared UI-library assets.
Create common UI components and design patterns for use across multiple application-development teams.
Define and enforce UI/UX and front-end development standards to ensure consistency, quality, maintainability, and reuse.
Develop navigation, forms, form controls, error messages, loading states, empty states, modals, tables, alerts, and responsive interaction patterns.
Implement Section 508 and WCAG 2.1 AA accessibility requirements directly in front-end code.
Ensure semantic HTML, keyboard accessibility, appropriate ARIA usage, screen-reader compatibility, logical focus management, and sufficient color contrast.
Ensure application screens function effectively across desktop, tablet, mobile, and other supported devices.
Collaborate with Product Owners, UI Architects, Developers, and HCD Specialists to translate research findings and low-fidelity concepts into working interfaces.
Partner with Senior ReactJS Developers to ensure reusable UI components can be integrated with application state, APIs, authentication, business logic, and backend services.
Support rapid development, validation, and refinement of working screens within Agile sprint cycles.
Participate in design reviews, code reviews, pull requests, sprint planning, demonstrations, and other Agile ceremonies.
Review completed interfaces for visual consistency, responsiveness, usability, accessibility, and compliance with established standards.
Partner with Quality Assurance and Compliance teams to validate usability, accessibility, and responsive behavior in production releases.
Document reusable components, interaction patterns, accessibility standards, responsive behaviors, and front-end implementation guidance.
Troubleshoot browser compatibility, styling, layout, accessibility, usability, and multi-device rendering issues.
Provide guidance regarding UI consistency, interaction design, responsive behavior, accessibility, and design-system reuse.

Qualifications

Ten or more years of general experience in information systems.
Eight or more years of specialized experience in UI development, UX implementation, front-end development, or application development.
At least five years of recent hands-on front-end development experience.
Bachelor’s or Master’s degree in Human-Computer Interaction, Design, Computer Science, Software Engineering, Information Systems, or a related field.
Experience may be considered in lieu of a degree in accordance with program requirements.
Experience supporting enterprise, government, federal, or regulated applications.
Strong understanding of Agile or SAFe delivery and iterative UI development.
Excellent written, verbal, presentation, and stakeholder-communication skills.

Must have:

Demonstrated hands-on experience developing production application screens using HTML5, CSS3, and JavaScript.
Strong professional experience developing reusable components and user interfaces using ReactJS.
Strong experience with Sass or another CSS preprocessor.
Demonstrated experience converting wireframes or low-fidelity mockups directly into polished, working application screens.
Strong understanding of responsive design, visual design, interaction design, usability, and information hierarchy.
Ability to make sound UI and interaction-design decisions without relying on complete high-fidelity specifications.
Experience developing reusable UI components, shared libraries, templates, or enterprise design-system assets.
Practical experience implementing Section 508 and WCAG accessibility requirements directly in front-end code.
Experience with semantic HTML, ARIA, keyboard navigation, focus management, screen-reader compatibility, accessible forms, and color contrast.
Demonstrated experience building responsive interfaces for desktop, tablet, and mobile devices.
Experience ensuring UI consistency across browsers, screen sizes, applications, and development teams.
Experience with Git, branching, pull requests, code reviews, and CI/CD development workflows.
Experience working with HCD specialists, UX designers, application developers, architects, product owners, and quality-assurance teams.
Ability to demonstrate recent hands-on coding experience rather than experience limited to UX research, design, prototyping, or developer collaboration.

Nice to have:

Experience with TypeScript.
Experience with Storybook or similar component-development and documentation tools.
Experience implementing or maintaining an enterprise design system.
Experience with USWDS, Material UI, Bootstrap, or similar UI frameworks.
Experience creating reusable ReactJS component libraries used by multiple development teams.
Experience developing dynamic forms, workflow applications, dashboards, and data-intensive interfaces.
Experience with Jest, React Testing Library, Cypress, Playwright, or similar front-end testing tools.
Experience with accessibility-testing tools such as Axe, WAVE, Lighthouse, JAWS, NVDA, Color Oracle, or SiteImprove.
Experience supporting federal digital-modernization programs or court and case-management systems.
Familiarity with DesignOps and UI-governance practices.
Understanding of Zero Trust Design and secure user-interface principles.
Experience developing applications deployed in AWS environments.
Certified Usability Analyst, Certified HCD Professional, Section 508 Trusted Tester, or a related certification.

Deliverable Alignment and Performance Outcomes:

Production-ready application screens developed directly from low-fidelity mockups, requirements, and user workflows.
Responsive and accessible HTML, CSS/Sass, JavaScript, and ReactJS code.
Reusable UI components and design patterns integrated into a shared UI library.
Standardized UI, CSS, responsive-design, and accessibility patterns used across applications.
UI and code artifacts delivered in alignment with Agile sprint objectives and front-end standards.
Compliance with Section 508 and WCAG 2.1 AA accessibility requirements.
Reduced post-release UI and accessibility defects through proactive development reviews, validation, and component reuse.
Improved consistency across applications through standardized UI patterns and shared components.
Improved development efficiency by enabling application teams to consume approved reusable UI components.
Measurable improvement in task completion, usability, accessibility, and user satisfaction.

Communication and Organization skills:

Excellent presentation and communication skills, both written and verbal.
Consultant mindset with the ability to work with senior customer stakeholders and build strong working relationships.
Strong analytical, visual, and problem-solving skills.
Ability to explain UI, accessibility, responsive-design, and development decisions to technical and non-technical audiences.
Ability to formulate and communicate recommendations for front-end implementation, accessibility, component reuse, and UI consistency.
Ability to establish standards and provide implementation guidance across multiple development teams.
Demonstrated ability to work effectively both independently and as part of a cross-functional Agile team.

This is a fully remote opportunity to join an application-development team and transform HCD research and low-fidelity concepts into accessible, responsive, consistent, and production-ready digital experiences.

About the role