Founding Product Designer

Lightsprint (YC P26) is the collaborative product-development platform for the AI era. Think of the code-aware task board, the cloud coding agents, and the per-task preview environment as one system: every task on the board is a real agent session with its own environment, preview URL, and context.

AI made software engineering dramatically faster, and so the software design lifecycle, used in teams, is due an update. We believe human collaboration is here to stay: for taste, for ownership, for the simple fact that great products aren't made alone.

This is the founding design hire. You'll work shoulder-to-shoulder with the founders in a fast, AI-cloud-agent workflow: talking to customers, framing product, prototyping, and shipping. You will own product design: set the bar, build the system. Lightsprint's users will feel your craft day to day.

Our most enthusiastic users are non-technical builders, but we're engineers building in a world previously dominated by engineers. We want UX craft and delight to become why users stay. We need someone whose taste and rigor turn that belief into the product.

• Talk to users constantly and form strong product opinions as a basis for UX.
• Design the multiplayer. Make working with your team feel genuinely different from working alone: presence, alignment inboxes, personalized reports, and the moments where humans and AI agents collaborate. Treat conflict and co-authorship as UX problems, not just engineering ones.
• Define agent UX. Translate complex agentic behavior (multi-step tasks, planning, code review, preview environments) into interfaces people understand, trust, and can steer.
• Make a complex, technical platform feel human. Resolve the power-vs-simplicity tension so non-technical builders feel capable and engineers feel respected, the same surfaces, both audiences.

• You've owned design for successful products at real scale or in fast 0-to-1 environments, ideally as an early designer at a company that shipped something people actually use. 7+ years of experience.
• Expert in either Figma, Origami, FigJam or similar interface / UX design tools.
• Exceptional craft and product judgment. Strong interaction design, visual taste, workflow UX.
• Demonstrated ability to make complex things simple. You take dense, multi-step, technical workflows and design clear, focused experiences.

• Experience designing real-time, multiplayer, or collaborative software: presence, live cursors/avatars, co-editing, contextual comments, shared state.
• Experience designing for both technical and non-technical audiences and can communicate design concepts clearly to both.
• Experience designing for AI / agentic products, e.g. human-in-the-loop, trust and transparency, human steering, agent-action legibility.
• Past experience in a Product Management or a similar role where you were involved in product discovery.
• Can prototype in code (React/TypeScript, modern CSS) and are fluent with AI build tools like Cursor and Claude Code.