UI/UX Developer

C Mack Solutions LLC is seeking a UI/UX Developer to help deliver user-centered, responsive, and maintainable interfaces for a mission-critical Federal Government program. This is an onsite role in Ashburn, VA 20148 (1 to 2 days per week onsite) where you will work in an agile environment, collaborate with cross-discipline teams, and contribute design artifacts that align with business objectives.

You will help create a cohesive look-and-feel across applications, build reusable layout and style libraries, and support quality and timeliness through unit testing and agile practices using tools such as JIRA, Confluence, and GitLab.

Responsibilities

• Develop user interfaces that address both business requirements and user needs
• Drive a standardized, cohesive look-and-feel and user experience across applications
• Create creative, user-focused experiences aligned with clients’ business objectives
• Collaborate with cross-discipline teams to define and execute experience style guides, interaction patterns, and information design standards
• Produce wireframes, mockups, and/or prototypes and communicate design ideas to stakeholders
• Establish standard layout and style libraries across applications
• Partner with functional teams to assess feasibility, refine requirements, and support design improvements
• Ensure product quality and delivery timelines, provide guidance, resolve issues, and submit periodic performance reports
• Work independently and efficiently in an agile development environment using tools and practices such as JIRA, Confluence, GitLab, unit testing, and Harness
• Provide mentoring to junior team members
• Work onsite in Ashburn, VA 1–2 days per week

Requirements

• Live within the DC, MD, VA area
• U.S. Citizenship required
• Must have an Active CBP Public Trust clearance
• 5+ years of professional UI/UX development experience
• Degree in a related field such as Interactive Design, Architecture, Industrial Design, Graphic Design, or Human Factors
• Experience collaborating to create responsive, easy-to-use interfaces for real people across device viewports
• Professional experience with enterprise UI design tools such as Figma (preferred) or similar
• Experience communicating designs with stakeholders including product owners, end users, development teams, and management
• Ability to weigh design trade-offs against technical feasibility and long-term maintenance
• Proficiency building and maintaining web applications using React, Angular, TypeScript, JavaScript, and web technologies including HTML, HTTP, and CSS (including Kendo UI)
• Familiarity with Java and related frameworks such as Spring/Spring Boot
• Familiarity with the stack: Java 17, Spring/Spring boot, React, UI state management, Hibernate, PostgreSQL, Amazon AWS
• Continuous Integration / Continuous Deployment tools such as Harness, Jenkins, GitLab, or Bamboo
• Ability to support responsive and mobile-first development
• Ability to use data, validation, and feedback strategies to support code backed by qualitative and quantitative testing
• Working knowledge of design tools to assist others and support process improvement (e.g., Figma, Axure, Sketch, Invision, XD, etc.)
• Excellent written and verbal communication skills
• Highly responsible, team-oriented individual with strong work ethics and self-starter capability
• Willing to take risks and champion new ideas
• Maintain a user-centered approach while respecting business needs
• Able to work effectively in an agile design environment

Benefits

• Medical, dental, and vision insurance
• Retirement savings plans
• Paid time off
• Other supplemental programs

Preferred Skills and Experience

• Design Thinking certifications such as those offered through IDEO, Stanford, Cornell, MIT, or other organizations
• Proven experience designing for web accessibility (Section 508 standards)
• Experience with information architecture
• Ability and interest in educating others on user-centered design best practices
• Advanced understanding of Lean processes and Agile principles

Location and Employment Notes

• This position is limited to candidates residing in U.S. states where the company is currently registered to employ team members

Compensation

• $85,000 – $120,000 annually
• May be filled at the Mid or Senior level based on qualifications and experience
• Final compensation determined based on level alignment, experience, education, and internal equity