Design Engineer at SageOx · LumiJobs

Responsibilities

You'll be the second designer at SageOx, partnering closely with our Founding Designer — not joining a design org, not reporting into one. Before you apply, read her post about what this actually feels like. It's the most honest preview of this role that exists, including the uncomfortable parts.
We're not looking for another generalist. We want a T-shaped designer: exceptional at one thing — good enough to take part of our product somewhere none of us could have imagined — and strong enough to play across everything else. In the AI era, someone who is a rock star in one area can push out and have real influence in the others.
SageOx doesn't live on one screen. It lives in the product people use every day, on the conference room screen a whole team looks at together, and in hardware that sits on the table. You'll design and build across all of it, along with the agentic design harness that lets every AI coworker on the team build the way you would.
And you'll push us. We want someone who tells us we aren't thinking ambitiously enough about the experience — then ships the version that proves it.
What You'll Design and Build
These are shipping surfaces, not concepts on a roadmap, and most of them have no obvious precedent.
The product itself
Design features end to end, from your own user research to the shipped experience — web, desktop, mobile, CLI. Designers here write the production code. If you can't build it, the design doesn't ship.
Memory you can walk up to. What a team has said, decided, and built. Designing retrieval people trust — where a claim came from, what an AI coworker actually read — is an information-design problem worthy of Tufte.
Ambient coordination. Murmurs — small signals from your coworkers, human and AI, that reach you without becoming another notification you resent.
How people grow into SageOx. We're breaking trail on human–AI collaboration, so the learning curve is part of the product: how people start, what nudges them next, and how they get more value over time.
Talk to users, and use SageOx daily. Everyone here does. Design from lived use.

Qualification

We're not optimizing for pedigreeT-shapedStrongA tinkerer who builds things5+ years in product designAI-pilledTechnically fluentWorking software over polished mockupsCurious sidewaysOwnershipYou believe in what we're buildingHardware

Required

We're not optimizing for pedigree. We're looking for builders with design judgment — and we want to see what you've built.
T-shaped, with a real spike. You're exceptional at one thing — product UX and interaction, hardware and physical product, large-screen and ambient interfaces, or design systems and tooling — and solid across the rest. Show us the spike.
Strong, opinionated taste. You'll tell us when we aren't thinking big enough about the experience, and back the opinion with something you shipped.
A tinkerer who builds things, not just designs them. Apps, tools, side projects, a home-lab rig, a device you hacked together on your bench — things you made yourself, end to end. We don't care whether any of it succeeded; we care that you couldn't stop building.
5+ years in product design, design engineering, industrial design, design systems, or front-end engineering. Long enough to know the design rules, and when to break them. The title matters less than the evidence: what you built, and what happened to the product after.
AI-pilled, for real. Claude Code, Claude Design, or your own stack is already your daily practice. You've built something AI coworkers use — a skill, an MCP server, a lint rule, a generator. Show us.
Technically fluent, with craft. At home in a codebase and in the terminal. You notice the empty state, the focus ring, and the error message. No CS degree required.
Working software over polished mockups. You balance speed with taste. In an age of AI slop, that often means editing and systematizing rather than producing more.
Curious sideways. Why a mic distorts, how an index works, what makes an animation feel expensive.
Ownership, low ego. You own outcomes, make things happen with limited resources, and find direction in early-stage ambiguity. Strong opinions in crit, open to new perspectives.
You believe in what we're building. A world where people and AI coworkers work as one team — and you want to be the one designing it.
Hardware, industrial, or packaging design experience on a product that shipped.

Design Engineer

Responsibilities

Qualification

Required

Benefits

Company

SageOx

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