Sr UI Motion Designer Job at T-Mobile (Frisco)

Job Description

This role makes motion a core part of Mint Mobile & Ultra Mobile's digital experiences by designing principled, scalable UI motion across web and native app surfaces. It involves using AI tools to create motion prototypes, animated interactions, reusable motion patterns, and streamline handoff to engineering. The role requires close collaboration with experienced designers, the design system manager, and engineering to ensure motion solutions align with technical constraints and project requirements. Success is measured by the consistent, accessible, and on-brand application of motion across Mint Mobile & Ultra Mobile's digital ecosystem. The work impacts organizational outcomes by improving usability, elevating product quality, and establishing Mint Mobile and Ultra Mobile's motion design language as a scalable, reusable system.

Job Responsibility

Design and deliver animated component prototypes, motion interactions, icon animations, transitions, and production-ready motion specifications that clearly communicate UI behavior, enhance engagement, simplify sophisticated interactions, and maintain consistent motion across the digital ecosystem
Leverage AI tooling and emerging motion technologies to rapidly prototype, visualize, test, and iterate on motion concepts while streamlining documentation, developer handoff, and implementation workflows
Define and maintain reusable motion tokens, animation principles, motion guidelines, and scalable motion patterns that bring clarity, usability, consistency, and accessibility to interactions across web and app experiences
Collaborate with Experience Designers, the Design System Manager, and engineering teams to find opportunities where motion enhances usability, align motion solutions with technical constraints and implementation requirements, and ensure motion is a core part of digital experiences
Act as the motion subject-matter expert by writing and maintaining documentation on motion guidelines for the design system
partner with the Design System Manager to host workshops and training sessions that help designers and engineers optimally apply motion across products and platforms
Provide feedback and direction to ensure motion solutions are accessible, responsive, on-brand, and aligned with established motion principles, ecommerce and native app guidelines, and emerging trends, tools, and standards in UI motion and interaction design

Requirements

Bachelor's Degree or Certification in Graphic/Web Design, Animation, or Motion Graphics plus 5 years of related work experience OR Advanced degree with 3 years of related experience
Other acceptable areas of study include Motion Design, Animation, Interaction Design, Graphic Design or a related field
4-7 years related working experience in Motion Design, animating user interfaces for ecommerce websites and native apps
Expertise in animating UI elements, icons, transitions and interactions to enhance user engagement and usability
Strong understanding of design principles, modern UI patterns, elements, interactions, responsive web design and accessibility standards
High proficiency in standardizing animation patterns and creating motion tokens for design systems
High Proficiency in Figma, After Effects, Lottie, Rive, Framer, or other motion graphics tool
Strong collaboration skills with the ability to work closely with designers and engineers
Excellent interpersonal skills with the ability to verbally articulate and write documentation on motion guidelines
Attention to detail and a commitment to design and animation quality
Understanding of web standards and HTML/CSS
Understanding of new AI workflows and tools like Claude or Codex
At least 18 years of age
Legally authorized to work in the United States

What we offer

Annual stock grant
employee stock purchase plan
401(k)
free, year-round money coaches
medical, dental and vision insurance
flexible spending account
paid time off and up to 12 paid holidays
paid parental and family leave
family building benefits
back-up care
enhanced family support
childcare subsidy
tuition assistance
college coaching
short- and long-term disability
voluntary AD&D coverage
voluntary accident coverage
voluntary life insurance
voluntary disability insurance
voluntary long-term care insurance
mobile service & home internet discounts
pet insurance
access to commuter and transit programs
annual bonus or periodic sales incentive or bonus
Corporate Bonus Target: 15%

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Sr UI Motion Designer

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