Senior UI Developer – AI/Analytics Platforms

Sr. UX/UI Developer
Job at a Glance

• Title: Sr. UX/UI Developer
• Location: Glendale/Anaheim, Seattle, Orlando
• Contract: W2 only, 22 month contract with potential for extension or conversion to full time with either the client or CEI
• Pay: $70.00-80.00/hour + optional medical, dental, vision, 401(k) match

Overview
This team creates world-class immersive digital experiences across parks, cruise, vacation club, and enterprise platforms—owning the end-to-end guest experience across attractions, food & beverage, resorts, transportation, and merchandise.
We are seeking a highly skilled Sr. UI/UX Developer to lead UI implementation and experience evolution for web-based AI and analytics applications.
Key Responsibilities

• Implement and customize UI for Open WebUI, LiteLLM Admin UI, Archestra, and Arize-based applications to align with client standards
• Build responsive, production-ready user interfaces directly from Figma designs
• Work closely with UX designers to understand intent, clarify edge cases, and resolve design gaps
• Extend and theme existing UIs using custom CSS, theming systems, and configuration-driven branding
• Develop reusable UI component libraries and shared design patterns
• Collaborate with backend engineers to integrate UI with APIs (data binding, error handling, loading states)
• Ensure accessibility (WCAG), responsiveness, and performance across browsers/devices
• Configure and extend UI layers of vendor/open source tools without compromising upgrade paths
• Contribute to UI technical documentation
• Provide informal leadership, code reviews, and UI best practice guidance

Required Skills

• 5+ years of experience as UI Developer / Front End Engineer / UI/UX Developer
• Strong experience with Figma (components, design systems)
• Advanced proficiency in HTML, CSS, JavaScript (responsive design, cross-browser compatibility)
• Proficiency in Python for UI-adjacent work
• Experience with modern frameworks (React, Angular, or Vue)
• Experience with Svelte / Smelte
• API integration experience (REST/JSON)
• Experience theming or branding existing tools/admin UIs (Open WebUI, LiteLLM, etc.)
• Strong visual detail (spacing, typography, interaction)
• Strong UI/UX principles for data-heavy or AI-driven applications
• Agile collaboration experience
• Strong communication skills

Required Education

• Bachelor’s degree in CS, HCI, Graphic Design, or related field

Preferred Skills

• Experience customizing Open WebUI and LiteLLM Admin UI
• Experience with Arize, Phoenix, or AI observability tools
• Graphic design skills (icons, layout)
• Familiarity with design tokens and enterprise design systems
• Accessibility experience (WCAG, ARIA, keyboard navigation)
• Agile/Scrum and CI/CD experience
• Craft leadership in UI quality and mentorship
• Cross-functional collaboration (UX, Product, Engineering)
• Strong problem solving in complex workflows
• Clear documentation and communication
• Portfolio required (production UI work preferred)

Why Should I Apply?
Join a high-impact team building cutting-edge AI-driven interfaces and shape scalable UI foundations for complex, data-intensive platforms. This is a unique opportunity to influence user experience across enterprise-level applications.
About CEI:
As a trusted technology partner, CEI delivers solutions that help our customers transform their business and achieve meaningful results. From strategy and custom application development through application management - our technology and digital experience services are tailored to meet each unique need of our customers. Our staffing solutions bring specialized skills to complement our customers' workforce and project requirements.
 
 
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