Principal Mechanical Design Engineer

The Resolute Group Ltd; Greater London; On-site; GBP 75,000 - 95,000; Full time

Job summary

The Resolute Group Ltd is seeking a Principal Mechanical Engineer to lead the design of data centre and critical infrastructure projects in London. You will oversee complex HVAC and building services, ensuring high performance, sustainability and compliant delivery.

Join a growing international engineering and design consultancy that values creative engineering, collaborative delivery, and mentoring. You’ll work with clients, contractors and multidisciplinary teams, applying UK regulations and

Qualifications

• Degree in Mechanical Engineering or Building Services Engineering (or equivalent).
• Experience as Mechanical Engineer on data centres, industrial, large commercial or similar projects.
• Familiar with UK building regulations and standards.
• Proficient with AutoCAD, Revit, and mechanical calculation tools.

Responsibilities

• Lead the mechanical design and coordination of medium to large-scale projects from concept through to construction.
• Develop detailed HVAC and building services solutions meeting performance, sustainability, and compliance targets.
• Collaborate with clients, contractors and multidisciplinary teams for seamless project delivery.
• Carry out technical assessments, calculations and analyses to support design development.
• Mentor junior team members and provide technical guidance.
• Ensure designs adhere to UK regulations, international standards and project requirements.
• Prepare specifications and reports using Word, Excel and specialist software.

Skills

Leadership

Communication

Team coordination

Education

Bachelor's degree in Mechanical/Building Services

Tools

AutoCAD

Revit

Mechanical calculation tools

Job description

Principal Mechanical Engineer – London (Data Centres)

An excellent opportunity for an experienced Mechanical Engineer to join a growing team within a leading international engineering and design consultancy, with a strong focus on high-performance building services across mission-critical projects.

Location:

London

The Role:

You’ll play a key part in delivering innovative mechanical design solutions on technically complex projects, particularly in the data centre and critical infrastructure sector. This is a fantastic opportunity to progress your career within a team that values high standards, creative engineering, and collaboration across disciplines.

Key Responsibilities:

• Lead the mechanical design and coordination of medium to large-scale projects from concept through to construction.
• Develop detailed engineering solutions for HVAC and other mechanical building services systems, ensuring they meet performance, sustainability, and compliance targets.
• Work closely with clients, contractors, and multidisciplinary teams to ensure seamless project delivery.
• Carry out technical assessments, calculations, and analysis to support robust design development.
• Support and mentor junior team members, reviewing work and providing technical guidance.
• Ensure designs adhere to UK regulations, international standards, and project-specific requirements.
• Prepare specifications and reports using tools such as Word, Excel, and specialist engineering software.

Requirements:

• Degree in Mechanical Engineering or Building Services Engineering (or equivalent).
• Previous professional experience as a Mechanical Engineer working on data centres, industrial, large commercial or similar projects.
• Familiar with UK building regulations and standards.
• Ability to lead packages of work independently while coordinating effectively within a wider team.
• Strong communication skills, both written and verbal.
• Proficiency in design tools and software such as AutoCAD, Revit, and mechanical calculation tools.

PLEASE NOTE

You need to be living and eligible to work in England to be suitable for this position.

All correspondence will be dealt with in the strictest confidence.

The Resolute Group is committed to a policy of equal opportunities for all prospective professionals. No individual will be unjustly discriminated against. This includes but is not limited to, discrimination because of age, colour, nationality, disability, gender reassignment, marriage and civil partnership status, pregnancy and maternity, race, religion or belief, sex and sexual orientation, and political beliefs.