Senior Product Designer

About

Over 9,000 companies — from scrappy startups to global brands — use our platform to send billions of emails, push notifications, in-app messages, and SMS every day. Customer.io powers automated communication that people actually want to receive. We help teams send smarter, more relevant messages using real-time behavioral data.

About the role

Hi, my name is Matt Wensing, VP Product & Design at Customer.io and I’m looking for a Senior Product Designer to own the design of a product area end to end — from strategy through shipped pixels.

We’re a lean design team working on a sophisticated B2B platform that millions of messages flow through every day. This role is for designers who insist on owning outcomes, not just deliverables — who see implementation as part of the job, treat the design system as something they contribute to, and have a real point of view on how AI changes interaction design in their area. You’ll shape what we build within your domain, not just how it looks.

What we value

• Design Craft over decoration — we care about interactions that work, flows that don’t lose users, and systems that hold up over time.
• Ownership through implementation — you don’t hand off and walk away. You close the gap between design and shipped product, including in code when that’s the right tool.
• AI as a design factor — we expect a thoughtful perspective on how AI changes interaction models, not just awareness that AI exists.
• Candor in critique — we give and receive honest feedback because it’s the fastest path to better work.
• Systems thinking over one-off solutions — we build patterns, not just screens.

What you'll do

• Own the design of a product area end to end — strategy, flows, edge cases, and shipped quality.
• Design flows, not just screens — identify where users will get stuck before they do, and treat self-service (onboarding, activation, recovery) as a primary discipline.
• Close the gap between design and shipped product — pair with engineering during implementation, catch regressions, and contribute directly in code: Pluma components, production UI fixes, interaction prototypes.
• Contribute actively to Pluma, our design system — use it well, propose extensions thoughtfully, fix inconsistencies, and step into stewardship of components adjacent to your work.
• Develop a point of view on AI in your product area — prototype the interaction, not just the screen, and treat uncertainty, latency, and reversibility as real design factors.
• Partner with PM and Engineering on roadmap and tradeoffs — bring UX into the conversation early, push back when it shortchanges the user, and own the quality of your area over time.
• Mentor designers earlier in their career through pairing, critique, and the example set by your own work.

What we're looking for

• 5+ years of product design experience with a portfolio demonstrating craft, ownership, and a clear point of view on shipped work.
• Strong flow literacy — you design end-to-end experiences across states, edge cases, and recovery paths, not isolated screens.
• Closes the design-to-implementation gap — partners tightly with engineering, catches regressions, and contributes directly in code. Code fluency is a real and growing expectation at this level.
• Experienced power user of a design system — you can describe how you've extended it thoughtfully, where you've pushed back on a pattern, and how you decide when to use a primitive vs. propose a new one.
• Has designed or shipped AI-involved interfaces and can talk specifically about how you handled uncertainty, latency, or reversibility — even at small scale.
• B2B SaaS experience with complex, data-driven interfaces.