Senior Full-Stack UI/UX Engineer — On-Site in VA

C Mack Solutions LLC; Ashburn (VA); On-site; USD 85,000 - 120,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

Retirement savings plans

Paid time off

Supplemental programs

Job summary

C. Mack Solutions LLC is seeking a UI/UX Developer with strong full-stack experience to support a mission-critical Federal Government program.

You will build responsive web apps with React/TypeScript and work across the stack using Java 17/Spring Boot and PostgreSQL, while aligning with design for intuitive UX. As a hands-on developer, you will code, review, and participate in CI/CD, partnering with designers and stakeholders to deliver quality software on an Agile team.

Qualifications

• 5+ years building production web applications with React and TypeScript.
• Strong proficiency in JavaScript, HTML, CSS, and modern UI frameworks.
• Experience with Java 17, Spring Boot, PostgreSQL, and AWS.
• In-depth knowledge of CI/CD tools and pipelines (Harness, Jenkins, GitLab, Bamboo).
• Experience with responsive/mobile-first development and accessibility considerations.
• Familiarity with design handoff tools like Figma is a plus.
• Ability to collaborate with stakeholders and work in an Agile environment.

Responsibilities

• Build and maintain production-grade web apps using React and TypeScript.
• Integrate front-end code with back-end services on Java 17/Spring Boot and PostgreSQL.
• Write clean, tested code; participate in code reviews and CI/CD pipelines.
• Translate wireframes into responsive, accessible front-end implementations.
• Collaborate with designers, product owners, and stakeholders to ensure consistent UX.
• Provide mentoring to junior team members and work in an agile team setting.
• Work on-site in Ashburn, VA 1–2 days per week.

Skills

React

TypeScript

JavaScript

HTML

CSS

Angular

Kendo UI

Java 17

Spring Boot

PostgreSQL

AWS

CI/CD

Harness

Jenkins

GitLab

Bamboo

Accessibility

Figma

Tools

Harness

Jenkins

GitLab

Bamboo

Job description

C. Mack Solutions LLC is seeking a UI/UX Developer with strong full-stack experience to support a mission-critical Federal Government program.

You will build responsive web apps with React/TypeScript and work across the stack using Java 17/Spring Boot and PostgreSQL, while aligning with design for intuitive UX. As a hands-on developer, you will code, review, and participate in CI/CD, partnering with designers and stakeholders to deliver quality software on an Agile team.