Senior Mechanical Engineer

Senior Mechanical Engineer - Design-Focused - Data Centres - Critical Infrastructure

Are you a design-focused Senior Mechanical Engineer looking to work on some of the UK's most technically challenging data centre and critical environment projects?

Our client is a leading M&E contractor with an annual turnover of circa £90 million, delivering high-profile commercial fit-out, data centre refurbishment, and critical infrastructure upgrade projects across the UK. With a strong reputation for technical excellence, an impressive order book, and a genuinely people-focused culture, they have built a business where staff retention is exceptionally high and long-term career development is a priority.

Due to continued growth and a significant pipeline of secured work, they are seeking a Senior Mechanical Engineer to join their expanding engineering team.

The Role

Working as part of a highly skilled technical team, you will take ownership of mechanical design activities from initial concept through to detailed design, commissioning, and project delivery. This role offers a unique opportunity to work on complex refurbishment and upgrade projects within live critical environments, including data centres and mission-critical facilities.

You will play a key role in ensuring technical excellence throughout the project lifecycle while providing engineering support across the wider business.

Key Responsibilities

* Assist in the assessment of new project opportunities and preparation of fee submissions.

* Develop and produce all necessary mechanical calculations and design solutions from concept and briefing stage through to detailed design.

* Produce and review technical documentation, specifications, drawings, and reports.

* Ensure designs comply with current regulations, industry standards, and client requirements.

* Monitor and support construction activities on site, ensuring compliance with design intent and the high-quality standards expected by the business.

* Lead and manage critical testing and commissioning activities, including:

* Integrated Systems Testing (IST)

* Black Building Testing

* Mechanical commissioning and performance validation

* Provide technical guidance and support to project teams, site teams, and wider business stakeholders.

* Collaborate closely with clients, consultants, subcontractors, and internal teams throughout project delivery.

About You

* Degree qualified or equivalent in Mechanical Engineering or Building Services Engineering.

* Minimum 5 years' experience within mechanical building services design.

* Strong understanding of HVAC and mechanical systems within critical environments.

* Experience delivering projects within data centres, critical infrastructure, commercial fit-out, or similar technically demanding sectors.

* Competent in mechanical calculations and industry-standard design software.

* Knowledge of current British Standards, Building Regulations, CIBSE guidance, and industry best practices.

* Experience supporting testing and commissioning activities within mission-critical facilities would be advantageous.

* Excellent communication and stakeholder management skills.

* Ability to work independently while contributing to a collaborative team environment.

What's on Offer?

* Opportunity to join a highly respected and financially stable M&E contractor.

* Strong pipeline of secured projects across the data centre and critical infrastructure sectors.

* Exposure to technically challenging refurbishment and upgrade projects within live environments.

* Clear progression opportunities within a growing business.

* Supportive, culture-driven environment with excellent staff retention.

* Competitive salary and comprehensive benefits package.

If you are a technically strong Mechanical Engineer looking to take the next step in your career with a business that genuinely invests in its people and delivers some of the UK's most exciting critical infrastructure projects, we would love to hear from you.

Apply today for immediate consideration
Only candidates based in UK and eligible to work in UK are allowed