Director of User Experience

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As Director of User Experience, you're the rare leader who thinks like both a strategist and an artist. You speak fluent UX—information architecture, research, usability—but you also speak design—visual systems, motion, art direction. And increasingly, you speak AI : architecting conversational interfaces, exploring vibe-coded experiences, leveraging machine learning to create next-gen user experiences. You understand that great design extends beyond owned platforms—into the interfaces you design within third‑party and media channels where you partner to maximize user engagement. You're looking to build and lead a team of UX and Product Designers who are equally fired up about creating experiences that are strategically sound, visually stunning, and genuinely innovative.

You juggle multiple complex projects without breaking a sweat, pivoting between high-level strategy sessions and detailed design feedback. You're the collaborator who bridges disciplines—connecting research to design, design to development, and all of it to business outcomes. You thrive in fast‑paced environments, champion the user's voice against competing agendas, and mentor your team with the same rigor you apply to your own work. This role demands someone energized by the full spectrum of design—from wireframe to final pixel.

You Will

• Lead a multi‑disciplinary team of UX and Product Designers to build and test user interface and product experiences that meet or exceed customer and stakeholder expectations.
• Guide and mentor UX and product design team members through delegating, follow‑up, and coaching.
• Champion the user's perspective, appropriately challenging senior stakeholders when user goals are compromised, and ensure all UX and design deliverables demonstrate visual excellence and interaction elegance.
• Build and maintain strong relationships with creative teammates, account managers, strategists, content strategists, marketing science, and producers.
• Act as an account lead, effectively visualizing and verbalizing design ideas to clients through compelling presentations and narratives.
• Facilitate design and brainstorming workshops with internal teams and clients, synthesizing diverse perspectives into cohesive design direction.
• Partner with media teams and platforms to design compelling interface experiences across owned and third‑party touchpoints, maximizing impact in the interface layer of social, advertising, and external platforms.
• Lead the integration of AI design principles and tools into projects—from AI‑assisted design workflows to architecting AI Agent interfaces and conversational experiences that feel natural and intuitive.
• Develop and champion AI‑influenced user experiences that leverage machine learning, predictive personalization, and intelligent automation while maintaining user agency and trust—including emerging paradigms like vibe‑coded interfaces where tone and personality drive interaction design.
• Oversee multiple high‑visibility client projects, effectively pivoting between focus areas as needed.
• Collaborate with leadership and creative leads to define, manage, and evolve the vision for the UX and Product Design discipline.
• Lead recruiting and resourcing efforts while cultivating an effective team with diverse skill sets (UX research, visual design, interaction design, front‑end development).
• Coach direct reports to maximize their impact, professional development, and contribution to project and agency success while helping define and promote team culture.
• Embody agency leadership values and promote culture in all interactions (internally and externally).
• Demonstrate advanced working knowledge across visual design, art direction, motion design, front‑end development, brand strategy, content strategy, and AI / machine learning principles.
• Be recognized throughout the agency as a UX and Product Design leader sought after for strategic input.
• Represent the agency as an ambassador at industry conferences and meetings, particularly around emerging AI design practices.
• Contribute UX and Product Design expertise to business development and sales initiatives.

You Have

What We Offer

Our new hires & employees are the future of our organization, and we want to set you up for long‑term success. In an effort to do so, we expect our team to work from an office a minimum of 3 days a week.

Critical Mass is an equal opportunity employer.

The Critical Mass Talent Acquisition team will only communicate from email addresses that use the URLs criticalmass.com, omc.com and us.greenhouse-mail.io. We will not use apps such as Facebook Messenger, WhatsApp, or Google Hangouts for communicating with you. We will never ask you to send us money, technology, or anything else to work for our company. If you believe you are the victim of a scam, please review your local government consumer protections guidance and reach out to them directly.

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If Canada based : https : / / www.canada.ca / en / services / finance / consumer-affairs.html

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