As Design Engineer (Mechanical), you produce the mechanical design for OnZero's data centers, including the cooling and heat rejection systems that make dense AI compute possible. The solutions are scalable, cost-efficient and sustainable, and built to satisfy technical, safety and customer requirements.

You maintain the mechanical content of our reference designs, including the mechanical services of the physical buildings.

You translate business, customer and operational needs into mechanical design principles and deliverables, including heat and mass balances, P&IDs;, flow and pressure schedules and equipment specifications.

You take part in multidisciplinary design reviews, work alongside the A&E; (Architecture & Engineering) consultants who produce detailed design, and carry the mechanical scope through the Project Phases: from Site Selection handover to detailed design, and on through construction, flushing and commissioning.

Responsibilities and Duties

Produce and develop mechanical design concepts across direct-to-chip liquid cooling, CDUs and the technology and facility water loops, heat rejection plant, and HVAC cooling of white space and support areas

Assess and specify the mechanical technologies, systems, materials and installation methods used across cooling and heat rejection

Prepare heat and mass balances, P&IDs;, flow, pressure and equipment schedules, and technical specifications to procurement quality

Review and comment on consultant and vendor mechanical deliverables, and follow non-conformances through to resolution

Act as technical responsible for mechanical systems across design, build and commissioning, supporting factory acceptance testing, flushing and thermal performance verification

Maintain the mechanical content of the reference designs, technical requirements and engineering frameworks that align with OnZero standards

Propose emerging technologies where they improve efficiency, sustainability and resilience

Confirm that mechanical design solutions meet their performance, sustainability, safety and environmental targets, including PUE and WUE

Propose updates to the Design Requirements as lessons learned, field experience and new technologies accumulate





Keep mechanical guidelines and best practice current so that designs stay consistent, high in quality and scalable

Take part in multidisciplinary design reviews and coordinate the mechanical scope with the architectural, civil, electrical and ICT disciplines

Work alongside internal and external engineering teams and A&E; partners on the mechanical scope

Carry the mechanical design through every phase of the Project Phases, from Site Selection handover through detailed design, and stay engaged through construction

Support Site Selection, Project Managers and Procurement on mechanical feasibility, cost, lead times and quality, including long-lead equipment

Contribute mechanical input to the assessment of brownfield and greenfield opportunities, and to Master Planning, including cooling water availability and heat reuse potential

Provide the mechanical basis for CAPEX estimates on new builds, expansions and retrofits

Evaluate existing mechanical installations when changes are planned, and support Operations through implementation

Approve mechanical design deliverables and calculations within your assigned scope and delegated authority

Recommend equipment selections and technical platforms, consistent with engineering standards and sustainability requirements

Raise and disposition mechanical design changes and controlled deviations within delegated authority, escalating any that affect the reference design

Certify mechanical design readiness as input to design freeze and other Gate Process decisions

Requirements

Essential A Bachelor's or Master's degree in mechanical, energy, or a related field

Experience producing mechanical or HVAC design for data centers, industrial facilities or comparable building services, taken through to construction





Working knowledge of hydronic systems and heat rejection: pumps, pipework, valves, flow balancing and pressure drop

Working knowledge of air-side cooling, white-space airflow, containment and thermal management

Ability to produce heat and mass balances, P&IDs; and technical specifications to procurement quality

Experience on engineering and construction projects, including review of consultant or vendor deliverables

Technical knowledge of product design, and the ability to understand client needs and translate them into solutions

Detailed design capability and strong technical problem solving

Fluent in English. Finnish, German or Swedish a plus

Robust Advantage

Experience in data center design, build and commissioning

Direct-to-chip or immersion liquid cooling experience, and exposure to GPU or HPC deployments

Heat reuse or district heating interface experience, particularly in the Nordics

Thermal modeling, CFD or hydronic system simulation

Benefits

Competitive Compensation Package: We offer a competitive salary package based on your professional experience, qualifications and overall fit for the position

Hybrid & Flexible Working: Benefit from a flexible working setup that combines remote work with on-site collaboration when required. As this is an international role, occasional travel to Vienna and future OnZero project locations will be part of the position

Flexible Working Hours: We support flexible working hours, giving you the flexibility to organize your working day while ensuring effective collaboration with your team and project stakeholders

Collaborative Working Culture: Join an international and technically driven team where close collaboration across disciplines is key. Your expertise, ideas and input will be valued, and you will have the opportunity to influence technical decisions and the development of our projects

Growth Opportunity: As OnZero continues to expand, you will have the opportunity to take on broader responsibilities and play an active role in developing our technical standards, reference designs and future projects

Lunch Allowance: Enjoy a monthly restaurant allowance via Edenred to treat yourself

📌 Design Engineer (Mechanical) (Winnipeg)
🏢 OnZero
📍 Winnipeg