Mechanical Design Engineer
About Enaxiom
At Enaxiom, we are building next-generation infrastructure for the AI era.
Our core technology, HydroCool, is redefining how data centres manage heat, dramatically reducing energy consumption and water usage, while enabling a water-positive future where infrastructure contributes back to local communities.
As AI scales globally, energy and water are becoming the biggest constraints. We are solving both.
This is an opportunity to work on a category-defining system at the intersection of:
- Climate tech
- AI infrastructure
- Water systems
- Advanced thermal engineering
We are a small, high-performance team with global ambition — and we’re looking for people who want to work on something that truly matters: solving the energy and water challenges of AI, while turning infrastructure into a net positive for communities and the planet.
The Role
We are looking for a hands-on Mechanical Design Engineer to work directly with our CTO to bring HydroCool from pilot to commercial scale large deployments.
This is a role for someone who enjoys solving real engineering problems — not just designing in isolation, but working collaboratively with a small team to turn technical direction into practical, buildable outcomes.
This is not a purely desk-based role. You will be deeply involved across the full cycle — from design → build → test → iterate — translating thermodynamic concepts into real-world hardware.
We’re looking for a thoughtful and capable engineer who can combine:
- strong CAD skills
- sound engineering judgement
- attention to detail
- and a practical, hands-on approach to design
You’ll play a key role in developing a system that improves the efficiency of AI data centres while helping create positive environmental and community impact.
We’re not looking for someone to “fill a role.”
We’re looking for someone who wants to help build a category-defining company — and is excited by the challenge of turning ambitious engineering into reality.
What You’ll Do
1) Translate System Design into Buildable Hardware
- Translate technical direction and system requirements from the CTO into:
- Detailed mechanical layouts
- 3D CAD models (SolidWorks preferred)
- Piping arrangements and system schematics
- Fabrication drawings, BOMs, and assembly documentation
- Turn thermodynamic and process concepts into practical, buildable engineering designs
2) Mechanical & Piping System Design
- Develop and maintain detailed designs of fabricated mechanical systems, including:
- Evaporators, condensers, and headers
- Piping runs, supports, and structural interfaces
- Integrated mechanical assemblies
- Ensure designs are:
- Practical and buildable
- Manufacturable and cost-effective
- Serviceable and robust in real-world conditions
3) Engineering Documentation & Drawings
- Prepare, update, and control:
- Fabrication drawings
- Manufacturing details
- Assembly instructions
- Engineering documentation
- Ensure documentation is accurate and ready for:
- Procurement
- Fabrication
- Installation and testing
4) Fabrication & Supplier Collaboration
- Work directly with suppliers, workshops, and fabricators to:
- Communicate technical requirements
- Review and refine drawings
- Resolve design and build challenges
- Support efficient and high-quality fabrication outcomes
5) Prototype, Build & Testing
- Support:
- Fabrication follow-up and inspections
- Prototype builds and system assembly
- Commissioning, testing, and troubleshooting
- Translate test results into design improvements and refinements
6) Optimisation & Scale-Up
- Improve designs for:
- Manufacturability and repeatability
- Operability and maintainability
- Cost and performance
- Contribute to scaling the system from:
- Pilot → modular units → commercial deployment
7) Problem Solving & Continuous Improvement
- Contribute ideas and practical engineering solutions as the system evolves
- Work closely with the CTO and team to solve complex, real-world challenges
- Help shape the future design of a category-defining system
What We’re Looking For
Technical Skills
- Strong mechanical design experience (3–8+ years ideal, flexible)
- Proficiency in SolidWorks (or equivalent CAD tools)
- Experience with:
- Fabricated systems
- Piping/layout design
- Mechanical assemblies
- Ability to produce:
- High-quality fabrication drawings
- Clear engineering documentation
- Preferred but not required skills:
- Experience with:
- Thermal systems / heat exchangers
- Fluid systems or process engineering
- Startups or early-stage environments
- Exposure to:
- Manufacturing environments
- Commissioning or field work
About You
This role could be a great fit for you if you:
- Care about climate, sustainability, and building technology that has real-world impact
- Enjoy solving practical, real-world engineering problems, not just working in theory
- Are comfortable working in ambiguity, with fast iteration and evolving designs
- Take ownership and follow things through to completion
- Have strong attention to detail and apply sound engineering judgement
- Want to build, not just design — and see your work come to life
And importantly:
- Are willing to work hard and push through challenges to deliver meaningful, rewarding outcomes as part of a small, high-performing team
Why Join Enaxiom
- Work on a globally relevant climate + AI problem
- Be part of a first-of-its-kind technology
- Direct access to founders and decision-making
- See your designs go from concept → physical system → deployment
- Opportunity to grow into:
- Senior engineering leadership
- System ownership
- Future team leadership
Hybrid Working
- Based in Sydney
- Combination of:
- Office / workshop / fabrication environments
- Some flexibility for remote work where appropriate