Senior UX Designer

About Teifi

Teifi Digital, a Shopify Plus Platinum partner, excels in resolving complex e-commerce challenges. We focus on integrating large catalogs, sophisticated data frameworks, and legacy systems into seamless unified commerce and B2B solutions, delivering unparalleled customer experiences. Our skill in deploying Shopify Plus caters to top-tier merchants in manufacturing, parts, distribution, retail, and B2B, ensuring minimal technical debt and maximized e-commerce revenue.

An AI-Forward Workplace
AI is embedded in how we work. Our team regularly uses AI tools to enhance productivity, streamline processes, and deliver better outcomes. Candidates joining us should be comfortable leveraging AI as part of their day-to-day workflow and open to developing their skills as these tools evolve. Familiarity with AI tools is a plus; a willingness to learn and adapt is a must.

As part of our hiring process at Teifi Digital, any offer of employment is conditional upon the successful completion of a background check.

Role Overview
We are seeking a Senior UX Designer to transform business requirements into tangible designs, wireframes, and user experiences that clients can validate and delivery teams can build from. At Teifi, the Senior UX Designer operates as a shared resource across multiple delivery pods, working closely with Business Analysts, Solutions Analysts, and developers to ensure every client-facing experience is intuitive, on-brand, and accessible. This role owns the design lifecycle from initial wireframes through to high-fidelity mockups and client sign-off.

Key Responsibilities

Discovery & User Flows

• Participate in discovery sessions to understand the client's business context, user needs, and design constraints
• Conduct usability audits of existing client experiences to identify UX issues and opportunities before redesigning
• Map end-to-end user journeys,flows and key interactions the interface must support, working from requirements gathered by the BA and Solutions Analyst
• Develop sitemaps and information architecture to ensure logical navigation and content structure
• Produce low-fidelity wireframes of key screens and workflows for early client review before higher-fidelity design or build begins

Design & Mockups

• Create polished, high-fidelity mockups representing the final look and feel of the solution for client sign-off and developer handoff
• Iterate on designs based on usability testing and stakeholder feedback throughout the engagement
• Ensure designs are responsive across devices and screen sizes
• Clearly annotate UX flows and journeys in designs so developers understand interaction patterns, spacing, and component behaviour
• Remain available during the build phase to answer developer questions, review implementation against designs, and adjust designs when technical constraints require it

Design System & Consistency

• Build and maintain a reusable design system and component library that keeps the UI consistent across the engagement
• Ensure all design work aligns to the client's brand standards and Teifi's design principles

Client Design Review & Sign-Off

• Run design reviews with the client, presenting design decisions clearly and incorporating feedback iteratively
• Support usability testing with end users where applicable, incorporating findings into design iterations
• Secure formal client sign-off on designs before build begins to prevent mid-sprint design changes

Accessibility

• Ensure all designs meet accessibility standards so the solution is usable by all end users
• Apply WCAG guidelines throughout the design process, not as an afterthought

Qualifications

• 4+ years of professional experience designing interfaces across web and mobile
• Proven ability to lead design on multiple projects simultaneously
• Strong portfolio showcasing UX and UI design work across complex digital products
• Deep understanding of UX principles, interaction design, and visual design fundamentals
• Experience producing wireframes, user flows, high-fidelity mockups, and design systems
• Familiarity with accessibility standards and best practices including WCAG
• Experience with agile delivery environments and sprint-based workflows
• Proven ability to present and defend design decisions to clients and non-design stakeholders
• Experience designing for Shopify or ecommerce problem spaces is a strong asset
• Previous agency experience is a strong asset
• Familiarity with front-end development and CMS constraints is an asset
• Fluency in Figma is required

We are an equal opportunity employer and love diversity at our company! We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, or disability status.