Mechatronics Engineer

About the role

CircuitHub is reshaping electronics manufacturing with The Grid, a factory-scale robotics platform that makes small-batch, high-mix electronics assembly radically more efficient. Think semiconductor-fab precision applied to the chaotic world of prototyping and low-volume production: a 10x throughput improvement in one of the world's most foundational industries. The company has raised $45M from top-tier investors including Plural, Y Combinator and Google Ventures, and is already profitable. Customers include a major EV maker, a top AI lab and many of the world's largest companies. The Grid isn't a prototype — it's live, scaling fast and delivering real revenue.

Mechatronics Engineers at CircuitHub own projects end to end. You'll start with a problem, often on the factory floor, and take it all the way to a working machine: understand the problem and turn it into a clear specification; generate ideas and choose the right mechanism; design it in CAD and prove it out with engineering calculations; prototype and build it, machining parts in the in-house CNC shop; bring it to life with software on the in-house robotics operating system.

The team works AI-first. AI tools help scope the problem, drive CAD, run calculations and write machine software. The software side needs basic software engineering skills, not a software background: you'll write it with AI agents, supported by a dedicated software engineering team who build the operating system. You must have built things before, ideally robots, whether as a hobbyist, student, employee or founder. CircuitHub doesn't hire narrow specialists — they want engineers who can diagnose system-wide failures from first principles, prototype mechanical and software fixes on the fly, work autonomously and communicate clearly with a team spread across sites, and take responsibility for how their machines perform in live production.

Responsibilities

• Conceive new mechanisms to handle electronics parts and other robotic handling tasks, using AI to scope and specify the problem
• Design gantries and end effectors in Fusion 360
• Use AI agents to run engineering calculations, and know when to distrust them
• Machine prototype parts in the in-house CNC shop
• Analyse end-effector behaviour from video and revise its geometry and control approach to improve throughput and reliability
• Program machine behaviour on the in-house robotics operating system, with AI agents doing the heavy lifting
• Specify sensors that catch errors while a machine is running, or monitor a chemical process
• Prototype and deploy a new test robot for in-line PCB validation
• Commission your machines and hand them over to the build team to scale up
• Work across US and UK sites to share what you've learned and shape the roadmap

Qualifications

• Experience programming machines, whether PLCs, robot controllers, embedded systems or Python
• Programming and running CNC machinery
• Design of chemical handling machinery
• Optics

Candidate profile (lower end of range): Built some systems before, with some exposure to robotics or automation; seen parts and subsystems through to manufacture as part of a design team; knowledge of designing for machining; keen interest in moving career towards practical robotics.

Candidate profile (upper end of range): Led the build and deployment of large-scale automated systems; written the software that controls their own machines; designed for a wide range of manufacturing methods, from machining to sheet metal to injection moulding; mentored more junior engineers.

The range isn't a hard limit: experts in all of the above are still encouraged to apply, as are candidates with less experience who are passionate and keen to learn.

Pay

$80K–$200K depending on experience, plus equity.

Schedule

Full-time on-site at the factory in South Deerfield, Western Massachusetts, 90 minutes from Boston, where the Grid runs in production today.