Shape the Future of AI Infrastructure

At MegaCool Technologies, we aren't just making parts—we're solving one of the biggest physical bottlenecks in the AI revolution: heat.

As data centre cooling reaches its physical limits, we've developed Smartfins™, our ultra-high-performance thermal management technology powered by proprietary generative algorithms.

We're a lean, fast-moving startup that bridges the gap between advanced software intelligence and large-scale hardware manufacturing. Our technology delivers world-class thermal performance at a scalable cost while integrating seamlessly into existing global supply chains.

If you want to see your designs deployed at gigawatt scale across the world's largest data centres, you'll feel at home here.

The Role

As a Mechanical Design Engineer, you'll bridge the gap between impossible thermal challenges and ready-to-ship hardware.

This isn't a role where you'll spend your days making small edits to legacy CAD files. You'll use our proprietary generative design technology to create the next generation of liquid cooling solutions.

You'll own the complete design lifecycle of cold plates powering the industry's most advanced CPUs and GPUs, working with a high level of autonomy from concept through manufacturing.

What You'll Do

Rapid Design Iteration

Develop high-performance cold plate designs by integrating our proprietary Smartfins technology into production-ready CAD models.

Own Design for Manufacturing (DFM)

Work directly with customers and global manufacturing partners to ensure every design is optimised for efficient, high-volume production.

Drive the Digital Twin

Leverage our SaaS platform to automate design iterations and provide Tier-1 partners with next-generation cooling solutions.

Lead New Product Development

Every new CPU and GPU generation requires a new cooling solution. You'll lead the design, validation and qualification of products for the world's leading OEMs.

Thrive in a Startup Environment

Move seamlessly between technical proof-of-concepts, customer discussions and close collaboration with our software engineers to continuously improve our generative design platform.

What You'll Bring

CAD Expertise
You're a power user of professional CAD software such as:

Autodesk Inventor
Siemens NX
PTC Creo
You take pride in creating clean, manufacturable assemblies.

Mechanical Engineering Fundamentals
You understand metal fabrication and know how to optimise designs for manufacturing.
Thermal Engineering Knowledge
You have a solid understanding of thermodynamics and heat transfer. Experience with single-phase or two-phase liquid cooling is a strong advantage.
Startup Mindset
You're comfortable with ownership, ambiguity and rapid iteration, and enjoy bringing disruptive technologies into established industries.
Customer Focus
You're confident working directly with customers and are motivated to deliver successful engineering outcomes.

Nice to Have

Experience in the data centre, semiconductor or liquid cooling industries
Knowledge of generative design, topology optimisation or thermal simulation tools

Why Join MegaCool?

Real Ownership
Join a lean, high-impact team where your engineering decisions directly shape both the product and the company.
Exceptional Growth Opportunity
Help build technology at the forefront of a £50B+ market rapidly transitioning to liquid cooling.
Meaningful Impact
Your work will directly improve the energy efficiency of AI infrastructure—every degree of cooling matters.
Fast-Paced Innovation
We move at the speed of the CPU and GPU release cycle: fast, iterative and constantly pushing the limits of hardware performance.

Ready to Build the Future?

If you're excited about solving complex engineering challenges and want to help redefine thermal management for the AI era, we'd love to hear from you.

Send us your CV, portfolio, or simply tell us about the most technically challenging problem you've ever had to explain or solve.