Senior UI/UX Engineer: Mission-Critical Interfaces Lead

Energy Jobline ZR; Englewood (CO); On-site; USD 108,000 - 195,000; Full time

Job summary

Leidos is seeking a Sr. UI/IX Engineer to join the Chinook Program, supporting an Intelligence Community customer. You will design and deliver modern, mission-focused user interfaces that help operators interact with complex systems and data more effectively.

You will work with cross-functional teams in an Agile environment, mentor junior engineers, and help establish UI/IX standards while ensuring compliance with security requirements.

Qualifications

• US citizenship required per contract.
• Bachelor’s degree in CS/Software Eng and 8–12 years experience or Master’s with 6–10 years.
• Active Top Secret/SCI clearance with the ability to pass a Polygraph.
• Experience building modern web UIs and UX.
• Proficiency with HTML, CSS, JavaScript/TypeScript, and Python.
• Experience with React, Angular, Vue.js, or Django.
• Experience in Agile/Scrum or SAFe environments.
• Strong communication and collaboration across teams.
• Experience with CI/CD and Jira/Confluence.
• Familiarity with AWS GovCloud and Docker/Kubernetes.
• Knowledge of secure coding and RMF/STIGs.

Responsibilities

• Lead design and engineering of modern, intuitive UI for mission-critical apps.
• Translate user needs and workflows into UI/IX solutions.
• Collaborate with product owners, designers, engineers, and stakeholders.
• Develop reusable UI components and design standards.
• Apply user-centered design to simplify complex workflows.
• Build interactive prototypes to validate concepts with stakeholders.
• Partner with engineering teams to ensure proper implementation and performance.
• Evaluate interfaces to improve usability, accessibility, and responsiveness.
• Participate in Agile ceremonies and program events.
• Provide mentorship to junior engineers and drive UI/IX best practices.

Skills

UI/UX development

HTML/CSS/JS

React/Angular/Vue

Agile SAFe

CI/CD tools

AWS GovCloud

Security compliance

Team collaboration

Education

Bachelor's degree in CS or Software Engineering

Master's degree in CS or related field

Tools

GitLab CI

Jenkins

Docker

Kubernetes

React

Angular

Vue.js

TypeScript

RESTful APIs

Job description

Leidos is seeking a Sr. UI/IX Engineer to join the Chinook Program, supporting an Intelligence Community customer. You will design and deliver modern, mission-focused user interfaces that help operators interact with complex systems and data more effectively.

You will work with cross-functional teams in an Agile environment, mentor junior engineers, and help establish UI/IX standards while ensuring compliance with security requirements.