UX Designer — Senior, SaaS Web & Mobile (iOS + Android)

About Zentrr

Zentrr builds AI Specialists for businesses that can’t afford to be wrong: accounting, insurance brokerage, legal, healthcare, real estate, and financial services. Customers don’t build AI. They hire pre-built Specialists from a curated Library, give them Knowledge, connect them to the tools they already use, and sign off on their work in Approvals.

The hard design problem is trust. A Specialist drafts, the person signs. Every answer should show its sources, every action that needs sign-off should be easy to review, and the audit trail should be readable by a person, not just a compliance team. We ship a web app and native iOS and Android apps built on one design system, and the mobile app is where many customers approve work between meetings.

The role

You’ll own the end-to-end experience across our web app and our iOS and Android apps. You’ll work directly with product, engineering, and the founders to turn complex, regulated workflows into interfaces that feel calm, fast, and obvious. This is a hands-on IC role with real ownership of the design system, not a deck-only role.

What you’ll do

• Design across web and mobile. Own flows from first sign-in through hiring a Specialist, reviewing its work, and approving it, designed for desktop, tablet, and phone, and tuned to the conventions of iOS (Human Interface Guidelines) and Android (Material) without forking the product.
• Build and evolve the design system in Figma. Maintain components, variants, auto layout, and design tokens that map cleanly to code. Our color, type, and spacing tokens are generated from source, so your Figma library and our token set need to stay in sync.
• Design for handoff. Write specs engineers can build from without a meeting: states (empty, loading, error, offline, permission-denied), responsive behavior, accessibility notes, and motion.
• Design for accessibility by default. We hold to WCAG 2.2 AA on the web, 24px minimum targets everywhere and 44px touch targets on mobile. You’ll know these without being reminded.
• Design for role-based complexity. Admins, org managers, team managers, and end users see different surfaces of the same product. Make permissions and scope legible instead of hiding them.
• Design for trust and transparency. Source citations, approval states, audit history, and AI-generated content labeling are core to the product, not afterthoughts.
• Run research. Conduct customer interviews and usability sessions with operators at small and mid-size firms, and turn what you learn into decisions.
• Partner on the brand. Customers can set their workspace accent color, so you’ll design components that hold up under different brand colors and in light and dark mode.

What you bring

• 5+ years of product design experience, with a meaningful share at SaaS companies.
• Expert-level Figma. Components with variants, auto layout, constraints, prototyping, and variables/design tokens. Your files are clean enough that another designer can pick them up without a walkthrough. Bring a link to a Figma file you’re proud of.
• Shipped mobile apps on iOS and Android. You’ve designed for both platforms, know where their patterns differ, and can explain why you’d choose a bottom sheet over a modal, or a native control over a custom one.
• Shipped responsive web SaaS. Dense data tables, forms, dashboards, and settings flows that work at phone width without horizontal scroll.
• A working knowledge of design systems and how they’re built in code, including tokens, theming, and dark mode.
• Strong accessibility instincts and the ability to back them up with contrast math, target sizes, and screen reader behavior.
• Clear writing. Microcopy matters here: status labels, error messages, and empty states carry real weight when the stakes are high.
• Comfort with ambiguity. We’re early, the product is evolving, and you’ll make reasonable calls without waiting for a perfect brief.

Nice to have

• Experience designing AI products, especially with citations, confidence, or human-in-the-loop approval.
• Experience in regulated industries (healthcare, financial services, legal, or accounting).
• Familiarity with React Native or Expo, or with Tailwind-based component libraries.
• Experience with Figma’s developer tools (Dev Mode, Code Connect, or variables exported to code).
• Motion design experience for micro-interactions and state transitions.

How we work

• Small team, direct access. You’ll work with the founders and engineers daily. No layers.
• Ship often. Merging to main deploys to our dev environment within minutes, so design decisions reach real screens quickly.
• Written over meetings. We write decisions down, and we review each other’s work asynchronously.
• Quality bar. We’d rather ship one flow that’s right than three that are almost right.