Senior Mechanical Engineer

About this role

About Nimble

Nimble is an AI robotics company building the autonomous supply chain to power fast, efficient and economical commerce. We’re training robot AGI to power a proprietary generalist supply chain superhumanoid, the first robot in the world capable of performing thousands of tasks across the supply chain. We’ve raised over $220M at over $1B valuation and formed a strategic alliance with FedEx to build a national network of autonomous warehouses capable of generating many billions in annual revenue. We are a hardcore and obsessed team of the world’s best engineers and operators. If you are obsessed with your craft, enjoy a high-intensity and fast moving high impact environment, are super high agency in getting hard things done and want to be part of building the world’s most legendary robotics company at the most pivotal moment in history, we want to work with you.

We are on a mission to empower and inspire mankind to accomplish legendary feats by inventing robots that liberate us from the menial. We will accomplish this by training robot AGI to invent and build the Autonomous Supply Chain – everything from the inside of factories and warehouses to your front door – powered by generalist superhumanoids.

Our founding team comes from the AI labs at Stanford and Carnegie Mellon and our board of directors include famed robotics and AI legends including Fei-Fei Li (Chief Scientist of AI at Google and Director of Stanford’s AI Lab), Marc Raibert (founder of Boston Dynamics), and Sebastian Thrun (founder of GoogleX, Waymo; Stanford Professor and considered the father of autonomous vehicles).

Let’s be legendary.

Link: Nimble Closes $106 Million Series C Funding Round, Scales Fully Autonomous Fulfillment with FedEx

Link: FedEx Announces Expansion of FedEx Fulfillment With Nimble Alliance

Why Join Nimble?

At Nimble, we are committed to building legendary products, a legendary team, and a legendary legacy. Join us and become part of an ambitious, humble, and resourceful culture where your work will leave a lasting impact on the future of robotics and commerce.

Nimble's Core Values:

Be relentlessly resourceful - Challenge conventions and overcome obstacles.

Be legendary - Be the very best and do work that inspires.

Be humble - Prioritize growth, learning, and doing whatever is needed to further the mission.

Be dependable - Take ownership and deliver with high agency.

Position Overview As a Senior Mechanical Engineer, you will own the mechanical design of the systems that power Nimble's robotic platforms — from structures and mechanisms through precision assemblies and production-ready hardware. You'll work at the core of the mechanical discipline: machine design, structural and stress analysis, GD&T and tolerancing, materials, and design for manufacturing — and you'll partner closely with controls, electrical, embedded, and perception teams to integrate your designs into complete robotic systems. You'll own your parts well beyond the design itself — driving part quality, supporting the supply chain, and relentlessly taking cost out as we scale from prototype to high-volume production. This is a role for a hardcore mechanical engineer. We're looking for someone whose craft is mechanical engineering itself — who cares about datum schemes, tolerance stacks, load paths, and manufacturability — and who is comfortable interfacing with electromechanical systems without needing to own the controls or firmware. If you love turning hard mechanical problems into robust, manufacturable hardware, we want to talk.

Key Responsibilities

• Own the mechanical design and architecture of robotic subsystems — structures, mechanisms, frames, housings, and precision assemblies — from concept through production deployment • Produce production-grade engineering drawings with GD&T (ASME Y14.5): sound datum schemes, functional tolerancing, and tolerance stack-up analysis that suppliers can build from without guessing • Develop detailed 3D CAD models and assemblies, and drive system-level mechanical design decisions • Perform engineering calculations, hand calcs, structural/stress analysis, and FEA to ensure performance, reliability, and manufacturability. • Design for manufacturability (DFM), assembly (DFA), reliability, serviceability, and cost • Select and integrate mechanical and electromechanical components — bearings, gears, transmissions, and fasteners, along with the motors, gearboxes, and sensors your designs interface with • Partner with controls, software, electrical, embedded, perception, and manufacturing teams to deliver integrated robotic systems • Lead prototype builds, debugging, root-cause investigations, and field performance improvements • Establish and execute validation plans, reliability testing, and qualification procedures • Support the supply chain across the product lifecycle — support sourcing and supplier selection, drive supplier development and second-sourcing, and resolve component and manufacturability issues fast to keep builds on schedule • Own part quality for the components you design — define inspection and measurement requirements on your drawings, lead first-article inspection, and drive root-cause and corrective action on nonconformances alongside suppliers and the quality team • Drive cost reduction across new and existing parts — through tolerancing, material, and process choices, value engineering (VA/VE), and design-to-cost — to hit unit-cost targets as we scale • Support the transition from prototype to production, including documentation, manufacturing support, and quality improvements • Mentor engineers and contribute to mechanical engineering best practices, drawing standards, and design reviews

Required Qualifications

• Bachelor's degree in Mechanical Engineering or a related field • 7+ years developing complex mechanical or electromechanical hardware • Deep mechanical engineering expertise: machine design, mechanisms, structural and stress analysis, so

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