Mechanical Build Engineer

Cambridge · GBP 35,000-60,000 · Full-time · Onsite · Posted Oct 19, 2026

At a glance

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.
We've raised $45M from top-tier investors including Plural, Y Combinator and Google Ventures, and we're already profitable. Our customers include a major EV maker, a top AI lab and many of the worlds largest companies.
The Grid isn't a prototype. It's live, scaling fast and delivering real revenue, and we're building the team that will scale it further.

CircuitHub is seeking a Mechanical Build Engineer to scale the production of factory automation systems in Cambridge.
The role involves building robotics such as high-speed gantries, novel end effectors, custom assembly tooling, and chemical handling systems.

Build up full automation systems from a mixture of custom and off-the-shelf parts, anything from hand-held end effectors to multi-tonne high speed gantries
Take a role in commissioning and testing
Liaise with logistics partners for system shipment
Work through any design issues by feeding back to the design team and making your own design changes
General workshop tasks such as tidying, consumable stocking and machinery cleaning

Comfortable interpreting 3D CAD assemblies and building from them directly
Basic familiarity with Fusion 360 or other leading CAD systems (Solidworks, Inventor, Creo, Catia, NX, Onshape) in a professional or hobbyist setting