Senior UX Engineer

Who We Are

Aptima is a technological leader in the national security industry. Our mission is to drive the future of national security by engineering scalable solutions that fuse technological innovation with human potential to transform how individuals and teams train, develop, and perform in mission-critical environments.

Our culture is rooted in our core values, which have evolved over time and our employees have embraced: Integrity, Ingenuity, Excellence, Respect, Engagement, Teamwork. At our core, Aptima researches, develops, and innovates within an area that engineering firms largely ignore, the human component. To impact the world in meaningful ways, you must bring those innovations to light, and that is precisely what we do.

How You’ll Make an Impact

The Senior UX Engineer will excel at the intersection of user experience design, prototyping, and front-end development. You will focus on shaping high-quality, intuitive, next-generation user experiences for production web applications. You will collaborate with UX Researchers, Designers, Software Engineers, senior technical staff, and customers to define impactful user experiences, develop prototypes, evolve design systems, and support the delivery of polished, user-centered applications.

Key Responsibilities

• Front-End Application Development: Develop modern front-end applications using React, Angular, TypeScript, and component-based frameworks; build responsive, intuitive, and accessible UI components that scale across products and customer environments; and lead efforts to transform dashboards into interactive, high-value applications that improve workflows and usability.
• UX Engineering & Prototyping: Design and implement user-friendly features with a focus on interactions, animations, and micro-details; translate concepts into working prototypes through rapid iteration with UX Designers, Researchers, and customers; and create, extend, and maintain design systems, reusable patterns, and scalable UI component libraries.
• Collaboration & Cross-Functional Work: Work closely with UX Researchers, Designers, Senior Software Engineers, and customers to define features, test concepts, gather insights, demo prototypes, and ensure seamless translation from design to code.
• Software Engineering Practices: Develop commercial and enterprise-grade front-end software across the full development lifecycle, including implementing enhancements, debugging, correcting defects, and promoting high-quality, maintainable, and scalable engineering practices.
• Typical Functions: Apply user research, data interpretation, ideation, UI design, and front-end development skills to create products and features; test, debug, and refine prototypes and production code while aligning UX intent with engineering performance.