Founding Product Designer

Own product and design end to end: consumer funnel, merchant surfaces, our design system, and the trade-in flow that runs inside Claude.

DesignToronto, hybridFull-time

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About the Role

You'll own design end to end: the consumer trade-in experience on sellit9.com, the embedded flows our merchant partners run on their own storefronts, and the design system that keeps it all consistent. The role is deliberately a product and design hybrid: you'll help decide what we build and why, then design how it works, working directly with the CTO, engineering and product. Your work ships to production every day.

This isn't a "make it pretty" role. You'll live in the conversion data, watch real user sessions, and defend every design decision with evidence. You'll also design for a surface most designers haven't touched yet: our trade-in flow runs inside Claude through our AI connector, and you'll help define what commerce looks like when the customer brings an AI agent to the journey.

What You'll Do

Own product problems end to end: framing, specs, flows, prototypes, high-fidelity UI, and production handoff, prioritizing with the CTO and following the metric after launch.
Design and iterate on the consumer funnel (quote, checkout, confirmation) and the email reminders that pull sellers back, to raise conversion.
Design merchant-facing surfaces: embedded trade-in flows, white-label experiences, and partner dashboards.
Own our design system in code, and keep the Figma library in step with it rather than the other way round.
Design in code: vibe-code prototypes with coding agents (Claude Code, Codex, or similar) so ideas get tested as working software, then ship the real thing.
Package our brand and design rules as agent skills, so every AI workflow on the team produces on-brand output by default.
Run our asset pipeline: hero videos built in Remotion, page imagery generated under locked brand styles, everything versioned like code.
Run usability tests and dig through GA4 and Microsoft Clarity to find where users struggle. Small team, many hats: brand, marketing assets and landing pages when needed.

Apply if you

Have 5+ years of product design experience with shipped, conversion-focused work in e-commerce, marketplaces, or fintech.
Have product sense beyond the pixels: you can write a spec, scope an MVP, argue a prioritization call, and own a metric.
Build, don't just spec. You ship production-quality React with AI assistance, and your work lands in the repo as a pull request rather than as a handoff.
Work AI-natively, and in git. Coding agents (Claude Code, Codex, or similar) are already how you build every day: you vibe-code explorations, generate your own skills and custom agents, and keep prompt libraries you reuse. This is non-negotiable.
Treat Figma as a thinking tool, not the deliverable. Your design lives in git, not only in Figma: our design system lives in the repo, that is where you will maintain it, and we're using Figma less each day.
Have design systems experience: you've built or owned one and kept it consistent and accessible across web and mobile.
Are fluent in funnel metrics: conversion rates, A/B testing, session replay analysis, and the discipline to let data settle debates.
Do hands-on user research, and write strong UX copy.

Even better if you have

Experience designing AI-powered products: chat or agent interfaces, conversational commerce, or prompt-driven UX.
Experience wiring design tools to agents: Figma MCP, Code Connect, or your own scripts.
B2B2C or white-label experience: one product, many brands, strict theming constraints.

Think this is you? We read every application.

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Why join SELLIT9?

Competitive salary in CAD (range depends on experience).

Meaningful equity: you're joining early, and your ownership reflects that.

3 weeks paid vacation: because work-life balance matters.

Hybrid work model: 3 days/week in our Downtown Toronto office + remote flexibility.

First access to traded-in inventory, priced at cost.

High-impact role in a fast-growing, venture-backed startup.

Founding-stage opportunity: play a key role in defining culture, processes, and product direction.

Career growth & mentorship from experienced founders (ex-Salesforce VP, ex-Scotiabank Head of Engineering).

Work alongside a compact, senior team where your work ships fast and matters.

The trade-in infrastructure for commerce

SELLIT9 turns used items into instant store credit or cash. We operate in Canada and the United States.

A lot of usable value sits unused in people's homes. Our pricing and logistics engines convert it, starting with electronics, into instant purchasing power, and every trade-in feeds a verified, graded supply pipeline. One loop: conversion and higher AOV for merchants, affordability for consumers, consistent supply for refurbishers.