Senior Software Engineer - UI

ABOUT AIM Everything humanity depends on is mined, dug, or grown. At AIM, we are building the autonomous linchpin of civilization. We transform heavy machinery—bulldozers, loaders, excavators—into AI-powered fleets that operate continuously, safely, and at peak performance in the world's harshest environments. AIM runs production mines, large scale infrastructure builds, and defense operations as a TRL9 hardened system, not a science experiment. Built by engineers from mining, construction, Waymo, SpaceX, Google and Tesla, AIM enables scalable earthmoving, turbocharging the global economy's physical foundation. AIM is backed by some of the most sophisticated capital in the world, including General Catalyst, Khosla Ventures, Elad Gil, Human Capital, Ironspring Ventures, Mantis, DCVC. ABOUT THE ROLE ABOUT YOU You're a frontend engineer who thinks about UI the way the rest of our team thinks about autonomy: correctness, safety, and reliability come first, and the experience has to be excellent. You write clean, simple TypeScript and React. You've owned a design system that other engineers depended on, and you know the difference between a UI that looks correct and one that is correct. You take the craft seriously. Accessibility is not something you bolt on at the end. Performance is not something you measure once. You care about the developer experience of every engineer who builds on top of your components, and you care about the operator on a worksite who needs the UI to work when the sun is glaring on the screen and they're wearing gloves. You're equally comfortable architecting a component library API, debugging a real-time WebSocket pipeline pushing protobuf telemetry, optimizing a Three.js scene rendering live LiDAR, or thinking through the access-control UX of a multi-tenant SaaS portal. You take ownership — not just of your code, but of the operator and customer outcomes that code enables. You want to work on UI where correctness, safety, reliability, and performance matter. And you want to do it with a world-class team that values clarity, customer obsession, and engineering excellence. ABOUT US TOGETHER We're going to change how the world builds. The UI is where humans meet the autonomy, and along the way we'll face hard problems: - a safety-critical Operator UI where a bug has real-world consequences — a 60-ton bulldozer in the wrong place - a live 3D scene rendering point clouds, terrain meshes, geofences, and machine overlays at interactive framerates - a multi-tenant SaaS portal with relationship-based authorization and i18n across multiple languages - teleop controls (joysticks, gamepads) and live video streaming where latency is felt, not measured We will debate solutions, iterate quickly, confront the truth when things don't work, and build mechanisms that scale with quality. We'll deliver a UI that works not only in the comfort of the home office but in cabs, control rooms, and field offices where our customers depend on it. If that excites you — you're the kind of Senior SWE who will thrive here. RESPONSIBILITIES What you will own As a Senior Software Engineer with a UI focus, you will design and build the two web surfaces that put a human in the loop with AIM's autonomous fleet: the safety-critical Operator UI and the multi-tenant portal — and the shared design system that powers both. Architect & Build the Design System - Set the architectural direction for component APIs, accessibility, theming, versioning, deprecation paths, and migration tooling. - Own the developer experience of every engineer at AIM who builds on top of the design system. - Drive the patterns that make it easy to ship high-quality, accessible UI by default. Build the Operator UI Worthy of the machines it controls - Architect and implement the live 3D scene with Three.js / React Three Fiber / Drei — point clouds, terrain meshes with BVH acceleration, geofence editing, cut/fill visualization, machine overlays. - Design state machines (XSta