Principal UI Interaction Designer

HealthEquity

7h•$127,000 - $165,000

About The Position

We’re looking for a Principal UI / Interaction Designer to lead the UI strategy, interaction design, and design system foundations for our next-generation native mobile app. In this role, you will define the standards for best-in-class mobile design, build and scale the mobile design system, and establish the interaction models and principles that guide our product design teams. You will partner closely with product, engineering, research, and design leadership to set vision, drive execution, and elevate design craft across the organization. This is a highly impactful, strategic role for a designer who blends deep mobile expertise with systems thinking, craftsmanship, and leadership.

Requirements

8+ years (or equivalent mastery) designing high-quality mobile applications with a strong portfolio demonstrating UI craft, interaction patterns, animations, and systems thinking.
Mastery of native mobile patterns, platform HIG, Material guidelines, navigation structures, and mobile micro-interactions.
Experience building or leading major contributions to a design system (components, tokens, usage guidelines, governance).
Ability to scale a system across product teams and ensure consistency across multiple surfaces and platforms.
Strong command of user flows, interaction states, motion principles, progressive disclosure, error handling, and edge-case design.
Deep understanding of how to reduce cognitive load, increase clarity, and craft meaningful, predictable interactions.
Hands-on experience incorporating AI for ideation, prototyping, pattern generation, content, or QA.
Understanding of where AI augments craft-and where human judgment defines excellence.
Expert in Figma, prototyping tools, and dynamic interaction prototyping.
Comfortable working at speed while maintaining visual rigor and quality.
Ability to guide engineering teams through precise UI specifications, component behaviors, and QA standards.
Familiarity with human-centered design practices, usability testing, behavioral insights, and iterative improvement.
Demonstrated ability to use qualitative and quantitative insights to refine design decisions.
Strong knowledge of WCAG accessibility principles and inclusive UI patterns.

Nice To Haves

Experience working in fintech, healthtech, payments, benefits, or other regulated domains.
Experience shipping mobile products at scale (millions of users).
Background contributing to or running design system governance models.

Responsibilities

Lead the UI Vision
Own the end-to-end UI design direction for our next-generation native mobile experience across iOS and Android.
Define and document mobile UI principles, interaction guidelines, motion patterns, and design philosophies that anchor the product.
Establish & Evolve the Mobile Design System
Architect robust mobile design system-components, patterns, tokens, interaction models-and partner with engineering to ensure scalable implementation.
Drive system governance, maintain visual coherence across journeys, and proactively evolve the system based on product needs.
Ensure accessibility compliance, system-wide consistency, and performance considerations in component and pattern design.
Design High-Fidelity, Beautiful, and Functional UI
Create refined UI screens, flows, and prototypes with exceptional attention to detail, craftsmanship, and platform-specific conventions.
Translate user and business needs into intuitive, polished mobile interfaces that simplify complex financial and healthcare journeys.
Influence Design Direction Through Craft & Thought Leadership
Shape product strategy by advocating for clarity, usability, and interaction efficiency.
Partner with product managers and engineering leaders to ensure UI decisions are grounded in feasibility, system architecture, and long-term scalability.
Identify experience gaps and advocate for improvements that deliver measurable impact across key journeys (claims, contributions, spending, investments, card management, onboarding, etc.).
Collaborate, Mentor, & Elevate the Team
Mentor product designers and UI designers, raising the bar for craft, visual quality, motion design, and systems thinking.
Facilitate workshops, design critiques, and experience reviews that align teams and drive execution excellence.
Collaborate with research to validate UI patterns, interaction models, and micro-experiences through user testing.