Senior UI Developer

Who We Are

: Tria Federal delivers digital services and technology solutions that support the health and safety of veterans, service members and civilians. For two decades, federal agencies have relied on Tria companies to advance their critical missions and modernize their systems, so that they can uphold their commitment to the American people. Today, we are pushing the boundaries of possibility through partnerships and investments in artificial intelligence and emerging technologies, developing solutions for the biggest challenges that government will face tomorrow.

We are proud to employ and support military veterans who bring mission-first mindset, technical expertise, and leadership qualities that strengthen our work. Veterans, transitioning service members, and military spouses are strongly encouraged to apply. Job Description: Tria Federal is seeking a Senior Front-End UI/UX Developer to support human-centered digital experience delivery within a large-scale federal healthcare environment.

This role will lead the implementation of modern, accessible, and scalable front-end experiences across complex, high-visibility systems used by healthcare providers, administrators, and federal stakeholders. You will work across multidisciplinary Agile teams to translate design intent into high-quality, production-ready interfaces aligned with real-world workflows in highly regulated environments. As part of a mission-focused delivery organization and a member of Tria’s Human Experience (HX) Practice, you will partner closely with designers, researchers, and engineers to elevate front-end quality and strengthen the integration of design and engineering.

You will also contribute to advancing how we leverage emerging technologies, including AI, to improve user experience delivery. This is an opportunity to build meaningful public-sector systems where your work directly improves usability, reduces administrative burden, and enhances service delivery at national scale. S.

Requirements

Must be able to be in person 1 day per week.

Key Responsibilities

Translate Figma (or similar design tools) prototypes and design systems into high-quality, production-ready code Collaborate deeply with UX designers to ensure design intent, interaction patterns, and visual systems are effectively realized in code Build responsive, accessible, and performant user interfaces using modern front-end technologies Contribute to and help evolve design systems and reusable component libraries Advocate for front-end quality, usability, and accessibility across the development lifecycle Identify gaps or opportunities in the user experience and propose thoughtful improvements Ensure cross-browser compatibility and consistency across devices Participate in code reviews and help establish front-end best practices Leverage AI-assisted development tools to improve engineering efficiency and quality

Required Qualifications

7+ years of experience in front-end development with a strong focus on UI implementation Proficiency in HTML5, CSS3, and modern styling approaches including Sass/SCSS Strong experience with JavaScript and TypeScript (with demonstrated real-world usage) Experience developing applications using Angular Familiarity with Salesforce Lightning Design System (SLDS) Strong understanding of responsive design and modern web standards Experience working from Figma (or similar tools) to production code Solid understanding of UX principles, interaction design, and human-centered design practices Demonstrated experience applying human-centered design principles in real-world delivery Experience building accessible applications (WCAG compliance) Experience using AI-assisted development tools (e.g., code generation, pair-programming assistants)

Preferred Qualifications

Experience supporting Centers for Medicare & Medicaid Services (CMS) or similar federal health programs Experience designing and/or building AI-enabl