About

I'm Eirinn Mackay, an independent engineer based in London. Through Spinifex Studio I design and build bespoke electromechanical systems, combining mechanical design, embedded electronics and software to turn ideas into working hardware.

Spinifex Studio is a sole-operator practice. It is where I take on independent engineering development and where I document my own projects. There is no team behind it: the mechanical design, electronics and firmware described on this site are my own work unless a project says otherwise.

Eirinn Mackay, wearing a suit, photographed outdoors beside a river.

How I got here

I came to engineering through science. I was interested in computers from childhood — teaching myself Visual Basic and Delphi to write games as a teenager — and went on to study biology, completing a PhD focused on zebrafish biology.

During my research career I found myself increasingly drawn to the engineering around the experiments. I learned electronics, mechanical design and 3D printing through my own projects, and by building the equipment the work needed: a modern gel documentation system, an optical projection tomography microscope. Much of what I know now came from making those instruments work.

That experience led to a full-time engineering role at the Sainsbury Wellcome Centre, designing and building custom instruments for researchers, and then to Micrographia Bio, developing an automated microscopy platform for spatial proteomics. Engineering is now my principal professional focus.

I enjoy solving practical problems and working across the boundaries between mechanics, electronics and software. My particular interest is in robotics, mechatronics and physical systems that have a useful, real-world impact.

Eirinn soldering a circuit board at a workbench, soldering iron in one hand and solder wire in the other.
At the workbench.

Experience

  1. Independent engineer, Spinifex Studio

    2026–present

    Independent engineering development and prototyping, alongside my own project work.

  2. Research Engineer, Micrographia Bio

    2021–2026

    Developed and integrated scientific instruments, automated laboratory systems and microscope hardware, including mechanical fixtures, embedded electronics, motion control and Python-based instrument control.

  3. Research & Innovation Engineer, Sainsbury Wellcome Centre

    2019–2021

    Designed and built bespoke research equipment combining mechanical fabrication, motors, electronics and software.

  4. Research Associate, University College London

    2015–2019

    Scientific research and instrumentation development, including optical projection tomography.

Capabilities

These are things I have done in practice, not claims of expertise across every adjacent discipline.

Mechanical design and prototyping

  • CAD in Onshape and Fusion 360
  • Bespoke mechanisms, fixtures, mounts and enclosures
  • FDM and SLA printing, and design for iteration
  • Components designed for CNC machining and assembly

Electronics and embedded systems

  • Circuit and PCB design, assembly and rework
  • Nordic, Espressif and Arduino-class microcontrollers
  • Embedded C++, Arduino and MicroPython
  • Sensor interfaces, motor drivers and power regulation
  • Debugging with oscilloscopes and logic analysers

Robotics, automation and motion control

  • Electromechanical machinery and laboratory automation
  • Stepper and servo motor control
  • Custom robotic mechanisms and inverse kinematics
  • Liquid handling and instrument integration

Software and instrumentation

  • Python and C++
  • Hardware control, data acquisition and microscope automation
  • Automated testing against mocked and real hardware
  • Deployment and reproducible instrument configuration