UI Engineer
Mindlance
Senior Software Engineer — UI/UX & Front-End EngineeringLocation: Remote Duration: Long TermMust Haves:ASP.NET MVC 5Assistive Technology Testing (Screen Readers, Keyboard Nav)C# ProgrammingCSS3 / Responsive & Adaptive LayoutDevExpress ReportingDevExpress UI ComponentsHTML5 (Semantic Markup)JavaScriptjQueryMicrosoft SQL Server.NET Framework (Full Stack)Object-Oriented Programming (OOP)SQLUI/UX Design Principles & Interaction DesignWeb Accessibility (WCAG 2.1/2.2, ARIA)As a Senior Software Engineer with a UI/UX and front-end engineering focus, the candidate will be responsible for designing, developing, and maintaining accessible, user-centered interfaces for complex enterprise applications built on the ASP.NET MVC 5 technology stack. This role blends hands-on front-end coding with UI/UX design sensibility — translating business and user needs into clean, usable, and fully accessible experiences — while ensuring high-quality delivery within established timelines. The engineer will also write technical design specifications, perform unit testing, and produce clear technical and design documentation. Strong collaboration with business stakeholders, customers, designers, and cross-functional technology teams is essential. The Client — a not-for-profit membership organization dedicated to providing excellence and equity in education — manages a complex ecosystem of systems and applications that support students, educators, and institutions across multiple programs and services. Working within the Information Technology division and closely with Operations, UX, and business partners, this engineer will analyze existing interfaces and workflows and design scalable, reliable, and accessible solutions that improve usability, data quality, and operational efficiency. The ideal candidate is a senior, hands-on engineer with strong front-end craft and a genuine passion for UI/UX and accessibility, paired with solid experience developing and supporting ASP.NET MVC applications using C# and SQL Server in a Windows environment. They are comfortable working independently in established enterprise codebases, leveraging DevExpress components where appropriate, and delivering well-tested, accessible, production-ready solutions with minimal ramp-up.Required Skills & Experience:5–8+ years of professional software development experience, with a significant focus on front-end / UI developmentStrong proficiency in HTML5, CSS3, JavaScript, and jQuery, with an emphasis on writing clean, semantic, maintainable markupDemonstrated experience applying UI/UX design principles — information architecture, interaction design, visual hierarchy, and usability best practices — to real product interfacesHands-on experience implementing and testing for web accessibility, including WCAG 2.1/2.2 (AA) and Section 508 compliancePractical experience with ARIA roles/attributes, semantic HTML, keyboard navigation, focus management, and testing with assistive technologies (e.g., screen readers such as JAWS/NVDA/VoiceOver)Strong proficiency in C# and the ASP.NET MVC 5 frameworkExperience developing and supporting full-stack.NET applications in a Windows environmentSolid experience with Microsoft SQL Server, including database design/data modeling and writing T-SQL queries, stored procedures, and views to support UI featuresSolid understanding of object-oriented programming, design patterns, and core computer science principlesExperience building and consuming RESTful APIs and integrating front-end interfaces with internal and external systemsExperience with unit testing and supporting QA, usability testing, and release processesStrong understanding of the software development lifecycle (SDLC) and best engineering practicesAbility to analyze requirements, debug complex UI and cross-browser issues, and deliver reliable, polished solutionsPreferred Skills:Experience with DevExpress UI components and reporting toolsFormal training or certification in UX design, accessibility (e.g., IAAP CPACC/WAS), or human-centered designExperience conducting or supporting usability testing, accessibility audits, or design reviewsFamiliarity with design/prototyping tools (e.g., Figma, Adobe XD) and translating designs into accessible front-end codeExperience with financial aid, student systems, or higher education dataFamiliarity with Agile/Scrum methodologiesExperience maintaining or modernizing legacy.NET applications, particularly front-end layersExposure to CI/CD pipelines, automated deployments, and source control systems such as GitStrong written and verbal communication skills, including the ability to advocate for users and accessibility with technical and non-technical stakeholdersEducation:Bachelor's degree in Computer Science, Human-Computer Interaction, Design, Engineering, or a related field, or equivalent practical experience.EEO: "Mindlance is an Equal Opportunity Employer and does not discriminate in employment on the basis of – Minority/Gender/Disability/Religion/LGBTQI/Age/Veterans."
$131.3k - $237.35k
The Leidos Intelligence Group has an opening for UI/UX Engineer in Reston, Virginia. The successful candidate will work as a member of a government contractor team managing to design intuitive, user-centric interfaces and AI-driven applications for both unclassified and...SuggestedFull timeFor contractors$107.9k - $195.05k
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...Job Description: Millennial Software is seeking a cleared UX/UI Designer to join our team. You will work closely with software development... ...existing interfaces. This role will collaborate closely with engineers, customers, and other technical team members to ensure the final...Full time- ...choice you want to make, then choose MITRE - and make a difference with us.Department Summary:The department is seeking a Senior UX/UI Engineer who is passionate about designing and developing user-centered software solutions to address our sponsors' unique challenges. In...Work experience placementInternshipLocal area
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$105k - $165k
Overview UI/UX Developer Reston, VA (hybrid, requiring 2 days onsite) Active TS/SCI eligibility preferred At Bcore, our strength... ...intelligence professionals by fusing human insight, rapid-fire engineering, precision-measured outcomes, and relentless grit into mission-...Work at office- ...The suite of products include a point of sale (POS), compliance engine, document solution, API, and other mortgage‑origination related products... ...Join a fast‑growing fintech provider in lending as a Senior UI/UX Engineer working closely with requirement analysts and...Full timeWork at officeRemote workMonday to FridayFlexible hours
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...important mission sets. About the Role Redhorse is transforming how government uses data and technology. We are seeking a skilled UI Developer to design and build intuitive user interfaces for a next-generation web application. This application will streamline and...Contract work- ...Kadiak, LLC, a Koniag Government Services company, is seeking a UI Developer with a TS clearance to support Kadiak and our government customer in Vienna, VA. We offer competitive compensation and an extraordinary benefits package including health, dental and...Local areaFlexible hours
- ...mission-critical space operations? NS2 Mission is looking for a UI Developer with strong Vue.js experience to craft modern,... ...leveraging programmatic expertise, sensor modeling, and systems engineering to deliver a world-class SDA capability. Key Responsibilities...Local areaFlexible hours
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$140k - $165k
...while mentoring the development team and collaborating closely with UI/UX designers, back-end developers and stakeholders.... ...requirements. Collaborate with product owners, designers, and back-end engineers to define technical approaches for delivering scalable, reusable...Remote jobFull timeFor contractorsWork at officeWork from homeHome office- ASRC Agile Decision Sciences is seeking a full-time Geospatial Front-End Developer to join to design, build, and maintain our web-based mapping application that supports mission-critical geospatial workflows. The ideal candidate will be highly proficient in modern JavaScript...Full time
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- DescriptionWe are seeking a UI Front End Developer with Spring Boot and Microservices experience for a multi-year contract to support... ...and implement JEE software applications.Use modern software engineering tools and methodologies, including Eclipse, and Atlassian...Contract workRemote work
$70 - $75 per hour
...skills and experience — talk with your recruiter to learn more. Base pay range $70.00/hr - $75.00/hr Immediate need for a talented UI Developer . This is a 06 months contract opportunity with long-term potential and is located in Mclean, VA (Onsite) . Please review the...Contract workLocal areaImmediate start- ...worldwide.Job DescriptionSOSi is seeking skilled Senior Full Stack/UI Developer to support a US government customer in Chantilly, VA.... ...involves collaborating with cyber SMEs, data scientists, and engineers to translate complex technical requirements into responsive user...Worldwide
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- ...solutions that support critical intelligence operations. The ideal candidate will have experience with Java development, software engineering best practices, and modern DevSecOps technologies in a fast-paced mission environment.Responsibilities:Participate in Agile...
$120k - $155k
...Position Title: Front-End Software Engineer Location: On-Site Clearance: Active TS/SCI Required Type: Full-Time, Direct Hire... ...maintain responsive, user-focused web applications Translate UI/UX design wireframes into high-quality, maintainable code Build...Full time- ...As a UI/UX Developer , you will be responsible for shaping the user experience and visual design of our Partner's digital products. You will conduct user research to understand the needs and behaviors of their audience, then translate those insights into wireframes...
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- ...Senior UI Developer - ReactJS Developing new highly responsive user-facing features using React.js. Building reusable components and frontend libraries for future use. Understanding business requirements and translate them into intuitive user experiences....Flexible hours
- Front End Web Developer Clearance: Top Secret/SCI Qualifications Basic Qualifications: ~2+ years of experience with developing front-end applications ~ Experience with modern JavaScript frameworks, including Angular, React, or Vue ~ Experience with CSS...Contract work
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