> Markdown version of [/jobs/ext/2645487-senior-ui-designer](https://www.wearedevelopers.com/jobs/ext/2645487-senior-ui-designer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior UI Designer - **Company:** Epsilon, Inc. - **Location:** Chicago, IL, United States - **Experience:** Expert - **Salary:** $67,800.0 - $126,000.0 - **Contract:** Temporary contract - **Skills:** HTML, JavaScript (Programming Language), Computer Animation, LTE (Telecommunication), Adobe InDesign, Artificial Intelligence, Cascading Style Sheets (CSS), Software as a Service, Cursor (Graphical User Interface Elements), Design of User Interfaces, Interaction Design, Rapid Prototyping Process, Software Tools, TypeScript, Web Content Accessibility Guidelines, Enterprise Software Applications, GitHub Copilot, ReactJS, Material UI, Production Code, Figma - **Published:** August 5, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=eb12148decd8063a ## About the Role * Six or more years of experience in UI development, engineering, creative engineering, or a related hybrid field. A portfolio must show shipped SaaS or digital product work. * Deep, hands-on experience contributing to and evolving a design system across both Figma (component libraries, design tokens, documentation) and code (React components, Storybook, token pipelines). * A strong and opinionated motion sensibility: experience designing and implementing micro-interactions, transitions, and animation systems that feel purposeful, polished, and on-brand, not decorative afterthoughts. * Demonstrated proficiency using AI tools,such as Cursor, GitHub Copilot, v0, Framer AI, or similar to accelerate design-to-code workflows, rapid prototyping, and component iteration. * Fluency in high-fidelity interactive prototyping, capable of producing experiences that convincingly simulate a final product to validate ideas before full build. * Working knowledge of HTML, CSS (including animations, transitions, and custom properties), and JavaScript/TypeScript sufficient to implement and critically review production UI. * Excellent visual design judgment: typography, spacing, color, density, and layout decisions that hold up at both the component and product-surface level. * An accessible online portfolio featuring live, interactive work and demonstrated motion and interaction work, not only static screens. ## Description The Sr. UI Designer will be the design-focused voice at the intersection of design and implementation, co-owning the visual fidelity, interaction quality, and long-term evolution of Epsilon's CORE UI design system. Based in Chicago, this role partners across Product Design and Engineering to push the boundaries of what's possible in enterprise SaaS: from building future-facing prototypes that signal where the product is heading, to shipping production-ready components that improve for every team. You bring deep fluency in design systems, a refined eye for motion and micro-interactions, and a willingness to use AI tools to move faster without sacrificing quality. This is a rare opportunity to define what delightful, modern SaaS looks like from the inside out, at a company where design has a seat at the table. Responsibilities * Own the ongoing evolution of Epsilon's CORE UI design system, contributing to its token architecture, component quality, and interaction standards across both Figma and production code. * Build future-facing prototypes that explore emerging interaction patterns, next-generation UI concepts, and new product directions, communicating vision and intent before a line of production code is written. * Rapidly iterate on existing components by applying AI-assisted workflows. Use tools like Cursor, Copilot, v0, and generative invention to shorten build-to-code cycles without losing quality or consistency. * Define and champion a motion language for the product: easing curves, transition choreography, loading states, and micro-interactions that make complex enterprise software feel alive, responsive, and intuitive. * Partner closely with front-end engineers to close the gap between design intent and production reality, reviewing implementations, writing production-quality CSS and component code when the moment calls for it, and setting a high bar for what 'done' looks like. * Contribute to the design system's documentation, usage guidance, and adoption, making it easier for every product team to build with consistency and confidence. * Stay at the forefront of AI-native design practices: identifying where AI tools can accelerate exploration, reduce repetitive work, and enable higher-quality outcomes at scale. * Collaborate with Product Designers on complex interaction flows, ensuring that every edge case, empty state, and loading moment is thoughtfully designed and accounted for. * Mentor and set a high standard within the design org, leading by example in design critiques, system reviews, and cross-functional handoffs, and raising the quality bar for the team around you. * Apply WCAG accessibility standards throughout component and interaction design, advocating for inclusive experiences at the system level. ## Related Videos - [Fireside Chat with Kris Rasmussen, CTO at Figma](https://www.wearedevelopers.com/videos/982-fireside-chat-with-kris-rasmussen-cto-at-figma) - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [Boost Productivity with AI: Figma & Playwright MCP Workflows - Aris Markogiannakis](https://www.wearedevelopers.com/videos/1768-boost-productivity-with-ai-figma-playwright-mcp-workflows-aris-markogiannakis) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Bridging the Gap](https://www.wearedevelopers.com/videos/794-bridging-the-gap) - [Designing the Future of Human<>Agent Collaboration](https://www.wearedevelopers.com/videos/1447-designing-the-future-of-human-agent-collaboration) ## Related Articles - [10 Essential Figma Plugins for Frontend Developers in 2023](https://www.wearedevelopers.com/magazine/262-10-essential-figma-plugins-for-frontend-developers-in-2023) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Top 7 CSS Frameworks in 2025](https://www.wearedevelopers.com/magazine/362-top-7-css-frameworks-in-2025) - [Top 23 Web Developer Portfolio Examples to Inspire Your Own](https://www.wearedevelopers.com/magazine/161-top-23-web-developer-portfolio-examples-to-inspire-your-own)