Design Engineer

Renterra is a Series A–backed SaaS company building the operating system for the $100B+ equipment rental industry. Our product handles complex, data-heavy workflows across operations, logistics, and billing — the kind of UI problems that require real design thinking and real engineering skill.

We're hiring a Design Engineer: someone who owns product design end to end and also contributes meaningfully to our React + Material UI frontend. This isn't a "designer who can inspect code" role — you'll design in your tool of choice, prototype fast, and ship real UI in our codebase.

You'll work directly with the Product Manager and a small engineering team. The role is high-ownership and high-visibility.

• Own end-to-end product design for core areas of our B2B SaaS product — from problem framing through shipped UI

• Design and prototype rapidly, using whatever tools get you to a good answer fastest (Figma, AI tools, code, napkin sketches — we don't care)

• Build and evolve our Material UI–based design system, both in Figma and in code

• Contribute directly to the React frontend — not just "small tweaks," but meaningful UI work: building components, refining layouts, polishing interactions

• Prototype outside the design system when exploring new ideas, then codify what works

• Collaborate closely with Product and Engineering to define scope, make tradeoffs, and ship

• 2–5 years of experience designing and building B2B SaaS products

• Strong portfolio that shows design ownership, speed, and iteration — bonus if it includes things you built, not just designed

• Working proficiency in React and Material UI — you can pick up a ticket, open a PR, and ship frontend work

• Strong product judgment and the ability to simplify complex workflows into clean, usable interfaces

• Comfort working in a fast-moving, small-team environment where you'll wear multiple hats

• Familiarity with modern design tooling, including AI-assisted workflows

• Experience building or maintaining a component-based design system

• Experience designing for complex operational or logistics software

• Background at a startup or high-growth SaaS company

• Competitive salary + meaningful equity at Series A

• Health, dental, and vision

• Flexible PTO

• One of the most visible roles on the team — you'll shape what the product looks and feels like, and you'll build it yourself

• A genuinely hard design problem: making dense, complex workflows feel simple

Renterra is an Equal Opportunity Employer.