Senior Mechanical Engineer - AI Infrastructure

Hamilton Barnes; Mikkeli; Remote; EUR 90,000 - 110,000; Full time

Benefits offered by this job

Remote work within Europe

~30% travel

Autonomy to lead projects

Small international team

Job summary

Hamilton Barnes is seeking a Senior Mechanical Engineer to lead the mechanical design and delivery of large-scale data center projects in the Nordics and across Europe. The role offers high autonomy within a small, growing team and requires driving projects from feasibility through commissioning.

You will own HVAC, cooling, and mechanical infrastructure, coordinating with consultants and contractors, and traveling internationally as needed.

Qualifications

• Strong mechanical engineering background across large-scale industrial or infrastructure projects.
• Experience in design, construction, and commissioning within energy, power, oil and gas, or data centers.
• Good understanding of HVAC, cooling systems, mechanical plant, and associated infrastructure.
• Experience leading engineering workstreams and coordinating contractors and consultants.
• Broad understanding of construction and other engineering disciplines.
• Comfortable taking ownership of projects and traveling internationally.

Responsibilities

• Lead mechanical design and technical delivery across new data center developments.
• Oversee HVAC, cooling, ventilation, and associated mechanical infrastructure.
• Review engineering designs and ensure they meet project requirements and standards.
• Coordinate with consultants, contractors, civil engineers, and local authorities.
• Support projects from feasibility and design through construction, commissioning, and handover.
• Identify technical risks, resolve design issues, and ensure projects stay on track.

Skills

Mechanical engineering

HVAC systems

Data center experience

Project leadership

Cross-disciplinary coordination

Job description

Join a growing AI infrastructure company developing large-scale data centers across the Nordics with a focus on sustainable energy and efficient infrastructure. The company is seeking a Senior Mechanical Engineer to lead mechanical design and delivery from early planning through commissioning, with autonomy to shape major projects within a small, growing team.

Responsibilities

• Lead mechanical design and technical delivery across new data center developments.
• Oversee HVAC, cooling, ventilation, and associated mechanical infrastructure.
• Review engineering designs and ensure they meet project requirements and standards.
• Coordinate with consultants, contractors, civil engineers, and local authorities.
• Support projects from feasibility and design through construction, commissioning, and handover.
• Identify technical risks, resolve design issues, and ensure projects stay on track.

Skills/Must Have

• Strong mechanical engineering background across large-scale industrial or infrastructure projects.
• Experience in design, construction, and commissioning within energy, power, oil and gas, or data centers.
• Good understanding of HVAC, cooling systems, mechanical plant, and associated infrastructure.
• Experience leading engineering workstreams and coordinating contractors and consultants.
• Broad understanding of construction and other engineering disciplines.
• Comfortable taking ownership of projects and traveling internationally.

Nice to Have

• Data center or mission-critical infrastructure experience.
• Liquid cooling or high-density cooling systems knowledge.
• EPC project delivery experience.
• Experience working with civil, electrical, and automation teams.
• Experience delivering infrastructure projects across the Nordics.

Benefits

• Remote working from within Europe.
• Approximately 30% travel across project locations.
• Opportunity to join a growing AI infrastructure business at an early stage.
• High levels of autonomy and ownership over engineering projects.
• Small, collaborative international team with a healthy working culture.
• Opportunity to influence the design of new sustainable data center developments.

Salary

• Up to €100,000 gross per year depending on experience.