UI​/UX Engineer

Location: Culver City or Cupertino, CA (Hybrid)

Duration: 12 months

Our client is seeking an experienced UI/UX Engineer to build polished consumer software experiences across mobile platforms. This role sits at the intersection of design and engineering, translating interaction concepts into high-quality, production-ready experiences with exceptional attention to motion, performance, and usability.

• Design and implement UI, motion, and interactions for new features and experiences
• Partner with product designers to translate static concepts into functional, interactive experiences
• Prototype interaction concepts in code to quickly validate usability and feel
• Build and maintain shared UI component and motion libraries
• Refine transitions, animations, haptics, edge cases, and accessibility behaviors
• Balance creative goals with performance, platform conventions, device capabilities, and accessibility requirements
• Collaborate with engineering teams on architecture, implementation, and integration
• Communicate clearly around project scope, timelines, technical constraints, and trade-offs
• Manage multiple concurrent projects while maintaining a high level of design quality

• 6-10 years of experience building production mobile interfaces
• Expert-level experience with SwiftUI and UIKit, including interoperability within mature codebases
• Advanced experience with animation and gesture APIs across both frameworks
• Strong understanding of spring and physics-based motion, interruptible animations, and gesture-driven interactions
• Strong design sensibility with the ability to work from Figma designs or ambiguous creative direction
• Experience rapidly prototyping interactions using Xcode, Figma, or code
• Experience with AI-assisted development and rapid prototyping workflows
• Deep understanding of mobile interface guidelines and platform motion conventions
• Strong performance optimization skills, including profiling, rendering, layout costs, and frame budgets
• Strong project management skills with the ability to manage multiple concurrent initiatives
• Portfolio or shipped applications demonstrating hands-on interaction and animation work

• Experience with shaders or custom rendering and visual effects
• Experience with 3D or immersive application development
• Experience with advanced animation and graphics frameworks
• Motion graphics experience using After Effects, Cinema 4D, or similar tools
• Accessibility engineering experience, including dynamic text, screen readers, and reduced-motion experiences