Senior React Developer

Senior React Developer Department: Engineering Location: Seattle, WA (Greater Seattle Area) Type: Full Time About AIM AIM Intelligent Machines is transforming the physical foundation of civilization—everything humanity depends on is mined, dug, or grown. We build autonomous heavy equipment (bulldozers, loaders, excavators), enabling fleets powered by AI to operate continuously, safely, and efficiently in the world’s harshest environments. Built by leading minds from industries like mining, construction, Waymo, SpaceX, Google, and Tesla, AIM’s platform supports production mines, large-scale infrastructure projects, and defense operations. We are backed by top-tier investors including General Catalyst, Khosla Ventures, Elad Gil, Human Capital, Ironspring Ventures, Mantis, and DCVC. About the Role The user interface is where humans interact with autonomy. As a Senior React Developer, you'll design and build robust web applications powering AIM’s autonomous fleet: a safety-critical Operator UI, a multi-tenant customer portal, and the design system underpinning both. You write clean, maintainable TypeScript and React, and bring equal rigor to UI correctness, safety, reliability, and user experience. You understand the difference between a UI that looks correct and one that is truly reliable—even under adverse conditions like bright sunlight or gloved operation on a worksite. You'll thrive in a team that prizes clarity, customer focus, and engineering excellence. Responsibilities Architect and build a robust design system, including setting the direction for components, accessibility, theming, versioning, and migration toolingOwn the developer experience for all engineers leveraging the design systemDevelop the Operator UI, including:Implementing live 3D scenes using Three.js, React Three Fiber, and Drei (rendering point clouds, geofences, machine overlays)Designing state machines (XState), validation, and observability for safety-critical flowsBuilding teleop controls and integrating live video streamingShape the administration portal as a true SaaS product, focusing on:Multi-tenant authorization, internationalization, and real-time data architectureDesigning customer-facing experiences meeting B2B software standardsDeliver production-ready, high-quality TypeScript using modern frontend engineering best practicesLead code reviews, design reviews, and architectural discussionsCollaborate with field deployment engineers to gather real-world feedback and improve the codebase Qualifications Basic Qualifications Bachelor’s degree in Computer Science, Computer Engineering, Design, HCI, or equivalent hands-on experience5+ years of professional software engineering experience delivering production frontend systemsDeep expertise with TypeScript and React (modern patterns like hooks, suspense, and concurrent rendering)Familiarity with frontend tools: Vite, npm/pnpm workspaces, Storybook, Vitest, Cypress, Testing LibraryStrong debugging skills (browser devtools, logs, telemetry, tracing)Proven track record of delivering high-quality software individually and across teams Preferred Qualifications Experience with 3D web graphics: Three.js, React Three Fiber, WebGL, or point cloud renderingExperience with real-time data and binary serialization (Protocol Buffers, gRPC-web, WebSockets)Exposure to safety-critical or industrial UI in sectors like robotics, automotive, aerospace, medical, or defenseExperience with state machines (XState), TanStack Router/Query, Zustand, Tailwind CSS, Floating UI, or multi-tenant SaaS authorization (ReBAC/ABAC) What We Offer High-impact ownership across our frontend stack and global deploymentsCollaboration with world-class engineers in software, autonomy, hardware, and roboticsCompetitive compensation, equity, medical/dental/vision, 401(k), and life insuranceTravel opportunities to customer jobsites across the U.S., Australia, Europe, Africa, South America, and beyondStrong onsite collaboration at AIM offices, labs, and testing grounds in the Greater Seattle area Ready to help build the future of earthmoving and autonomy? Apply today and join us at AIM.