Product Engineer

About CircuitHub
CircuitHub is reshaping electronics manufacturing with The Grid, a factory-scale robotics platform designed to make small-batch, high-mix electronics assembly radically more efficient. Think semiconductor-fab levels of precision applied to the chaotic world of prototyping and low-volume production. The result? A 10x throughput improvement in one of the world's most foundational industries.
We've raised $48M from top-tier investors, including Y Combinator, Google Ventures and now Plural and Sten Tamkivi, and we're already profitable. Our customers include industry leaders like Tesla, Meta, and Zipline.
The Grid isn't a prototype. It's live, scaling fast, and delivering real revenue. We're now building the engineering core that will scale it further.

What You’ll Do
As a Product Engineer at CircuitHub, you will own and evolve the mission-critical software systems that drive CircuitHub’s production operations day-to-day. This includes building and maintaining the internal operational stack that seamlessly connects planning, materials, purchasing, personnel, and factory processes, transforming complex manufacturing workflows into highly reliable, usable software.

This role operates at the intersection of production, engineering, and systems design. You’ll partner closely with factory operators, engineers, and company leadership to ensure CircuitHub’s factories scale smoothly as demand and Grid capabilities grow.

CircuitHub spans a vast problem space. Challenges include computer vision (OpenCV), machine learning (PyTorch), hard optimization problems (Z3/MiniZinc/OR-Tools), and all the normal engineering challenges of building both web-based customer-facing and internal tooling.

Core Responsibilities
Own and evolve CircuitHub’s internal production software suite

Design, implement, and refine data models and production system architectures

Evolve and extend existing tooling supporting Grid and factory scaling

Improve traceability, workflow visibility, and operational controls throughout factory processes

Collaborate directly with production teams to support daily operations and resolve issues promptly

Continuously improve the performance, reliability, and usability of internal production tools

What We’re Looking For
Strong experience with PostgreSQL (complex queries, performance tuning, and schema design)

Data modeling and systems design expertise

Hands-on systems integration experience: combining APIs, tools, and workflows

Practical, production-focused engineering mindset:
Able to work within real-world constraints

Skilled at extending and improving existing systems

Applies pragmatic solutions instead of unnecessary reinvention

Background in software, automation, or manufacturing engineering

Comfortable collaborating closely with operators and production teams

Familiarity with manufacturing, ERP/MRP, or operations software

Understanding of production planning, materials flow and factory systems

Experience optimizing performance and reliability of mission-critical operational systems

Location & Work Environment
Flexible: Remote, in-person, or hybrid (offices in South Deerfield, MA; London and Cambridge, UK)

Compensation Guidance
UK: £70k–£130k

US: $130k–$250k

Additional equity