Senior Mechanical Design Engineer

Senior Mechanical Engineer – Data Centres

About the role

An international engineering consultancy is seeking a Senior Mechanical Engineer to support the delivery of technically complex, mission-critical data centre projects . This role is ideal for an experienced building services engineer who enjoys leading design packages, supporting junior engineers, and working closely with clients and multidisciplinary teams.

You will play a key role in delivering high-performance mechanical systems that prioritise reliability, resilience, and operational efficiency across the full project lifecycle.

Key responsibilities

• Lead the mechanical design scope on large and technically demanding data centre projects
• Deliver and review detailed mechanical designs including HVAC, chilled water systems, CRAC/CRAH units, ventilation, controls, and fire protection
• Act as a senior technical point of contact for clients, contributing to design assurance and value engineering
• Coordinate with electrical, structural, architectural, and specialist disciplines to ensure integrated design solutions
• Chair and contribute to design and project meetings
• Mentor and support junior engineers, reviewing work and providing technical guidance
• Ensure designs comply with Uptime Institute Tier standards, ASHRAE guidelines , and applicable codes and regulations
• Monitor design delivery against programme, budget, and change control requirements
• Produce high-quality reports, specifications, and technical documentation

About you

• Degree-qualified in Mechanical or Building Services Engineering , or equivalent
• Strong experience in mechanical building services design , ideally within mission-critical environments such as data centres, healthcare, or high-tech facilities
• Extensive knowledge of HVAC design and a solid understanding of controls, monitoring systems, and fire design
• Confident leading design packages on fast-paced, technically complex projects
• Familiar with tools such as Revit, AutoCAD, IES VE, and CFD software
• Strong communication skills with a collaborative, client-focused approach
• Member of a relevant professional body (e.g. CIBSE, IMechE ), with Chartered status achieved or in progress



What’s on offer

• Exposure to large-scale data centre and mission-critical projects
• Supportive, technically focused environment with clear development pathways
• Access to structured CPD, chartership support, and global technical expertise
• Competitive salary and comprehensive benefits package, including bonus, pension, healthcare, and flexible working