Senior Mechanical Engineer

QCS Staffing Ltd; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

QCS Staffing Ltd in London seeks a Senior Mechanical Engineer to support mission-critical data centre projects. You will lead design of cooling and infrastructure solutions, ensuring performance, reliability and scalable operation.

The role requires a degree in Mechanical Engineering and substantial experience in mechanical design, HVAC, thermal management and 3D CAD, with hands-on testing, commissioning and performance optimisation.

Qualifications

• Bachelor's degree in Mechanical Engineering or related field.
• Experience in mechanical design for data centres or critical infrastructure.
• Strong knowledge of thermal management and cooling technologies.
• Experience with 3D CAD and commissioning activities.

Responsibilities

• Lead design of cooling and infrastructure solutions for mission-critical environments.
• Produce detailed designs, drawings and documentation from concept through deployment.
• Oversee testing, validation and performance analysis.
• Provide technical leadership and collaborate with stakeholders.

Skills

Mechanical design

Thermal management

Project leadership

HVAC systems

Data centre knowledge

Education

Bachelor's degree in Mechanical Engineering

Tools

3D CAD

Job description

Senior Mechanical Engineer – Permanent – UK, London – Data Centres

We are currently supporting a specialist engineering and project delivery company supporting mission-critical construction and infrastructure projects across complex technical environments. The organisation provides installation, coordination and engineering expertise to help deliver high-quality projects safely, efficiently and on schedule. We are looking for a Senior Mechanical Engineer to join our client’s team and support their current project in London.

What you’ll do

• Lead the design and development of advanced cooling and infrastructure solutions for mission-critical environments, ensuring performance, reliability and scalability.
• Produce detailed engineering designs, drawings and technical documentation from concept through to deployment and commissioning.
• Manage testing, validation and performance analysis activities, identifying opportunities to improve efficiency, reliability and operational performance.
• Provide technical leadership and mentorship to engineering teams while collaborating with internal and external stakeholders on project delivery.

What you’ll need

• Bachelor's degree in Mechanical Engineering or a related engineering discipline.
• Extensive experience in mechanical engineering design, ideally within data centres, HVAC, critical infrastructure or similar environments.
• Strong understanding of thermal management, fluid systems, heat transfer and cooling technologies.
• Experience using 3D CAD software and managing testing, commissioning and performance optimisation activities.

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