Senior Product Designer at C1 · LumiJobs

Responsibilities

We're looking for a Senior Product Designer who goes deep on the problem before anyone writes a line of code, and who is excited that the line between designing and building is disappearing.
At C1, design operates upstream. You'll spend real time with customers, untangle complex identity and access workflows, explore the problem space, and figure out the best way to solve something before it ships. The output of that work isn't just mockups. It's clarity: well-framed problems, sharp reasoning about the why, and context that engineers and AI agents can build from with confidence.
AI is already part of how you work. You prototype in code when it's the fastest way to learn, you use agents to explore and validate ideas, and you're comfortable shipping small fixes and polish yourself. If you want to grow into building full features end to end, we'll support that. What we're not looking for is someone who sees AI as a threat to the craft. We want someone who sees it as the most interesting thing to happen to the craft in a long time.
You'll be joining a small, high-output design team where everyone operates with a lot of ownership and autonomy, working alongside Design Engineers who lead on implementation and design systems.
Own product areas from problem definition through launch and iteration, across complex enterprise workflows.
Talk to customers regularly. Run research, join sales and support calls, and turn what you hear into clear problem statements and product direction.
Explore widely before converging. Map flows, sketch alternatives, pressure-test ideas, and make the case for the right solution.
Prototype at whatever fidelity answers the question fastest, whether that's a sketch, a design in Paper or Pen.dev, a Claude Design prototype, or a working build from an agentic coding harness.
Write the context that makes good building possible: specs, decision records, and design rationale that both humans and AI agents can work from.
Ship small UI fixes and polish directly using AI-assisted workflows, and grow toward building larger pieces yourself if that excites you.
Contribute to our design system as a consumer and advocate, partnering with Design Engineers who own its implementation.
Communicate the why behind design decisions clearly and publicly. We design in the open here.

Senior Product Designer

Responsibilities

Qualification

Required

Company

C1

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