Senior/Principal Mechanical Engineer (Data Centres) in London

Senior/Principal Mechanical Engineer (Data Centres) in London

London Full-Time 63000 - 77000 £ / year (est.) No working from home possible
Black & White Engineering

At a Glance

  • Tasks: Lead the design of high-performance mechanical systems for cutting-edge data centres.
  • Company: Join Black & White Engineering, a multi-award-winning consultancy redefining infrastructure across Europe.
  • Benefits: Enjoy professional development, mentorship, and opportunities for career progression.
  • Other info: Collaborate with diverse teams and stay at the forefront of emerging technologies.
  • Why this job: Make a real impact on innovative projects that power global cloud services and AI computing.
  • Qualifications: Extensive experience in mechanical engineering, particularly in mission-critical environments like data centres.

The predicted salary is between 63000 - 77000 £ per year.

Are you an accomplished mechanical engineer ready to take on a senior role at the forefront of mission‑critical design? At Black & White Engineering, you’ll join a team that is redefining the future of high-performance infrastructure across Europe. Based from our London office, this opportunity places you at the centre of designing and delivering hyperscale and colocation data centres - projects that demand technical excellence, innovative thinking, and a deep understanding of how electrical systems support the digital world around us.

As an experienced Mechanical Engineer, you’ll play a pivotal role in shaping resilient, energy‑efficient, and future‑ready facilities that power global cloud services, AI computing, and large‑scale digital operations. You’ll work with leading clients, guide multidisciplinary teams, and influence strategic technical decisions that have lasting real‑world impact. For someone who thrives in a fast‑paced environment and enjoys navigating complex engineering challenges, this is a chance to step into a role where your expertise will be recognised, valued, and continuously developed.

Your Future With Us

  • Leadership on Mission‑Critical Projects: You’ll take the lead on designing high‑performance mechanical systems for hyperscale and colocation data centres, influencing everything from concept strategies through to completion. Your technical decisions will have a direct impact on performance, resilience and long‑term reliability.
  • Strategic Client Partnership: You’ll work closely with major clients across Europe, offering technical direction, engineering assurance and strategic insights. Your ability to translate complex challenges into clear solutions will position you as a trusted advisor.
  • Technical Depth & Innovation: You’ll develop and review advanced mechanical designs including HVAC strategies, cooling for high‑density environments, chilled water systems, air handling units, heat rejection systems and associated mechanical plant. You will stay at the forefront of emerging technologies, regulatory changes and industry trends.
  • Cross‑Disciplinary Collaboration: Working closely with architects and specialists across electrical, structural, sustainability and BIM teams, you’ll deliver coordinated, efficient and future‑ready engineering solutions.
  • Talent Development & Team Growth: You’ll mentor and support junior engineers, contribute to resource planning and help shape a team culture built around innovation, continuous improvement and shared success.
  • Business Influence & Growth: You’ll play an important role in identifying new opportunities, strengthening client relationships, and contributing to the strategic growth of the mechanical discipline.

Extensive experience in mechanical building services engineering, ideally within mission‑critical environments such as data centres, healthcare or high‑tech manufacturing. Expertise in HVAC system design, cooling strategies for high‑density environments, chilled water systems, AHUs, heat rejection systems and associated mechanical plant. Proficiency with AutoCAD, Revit, Hevacomp, IES and CFD modelling software. Strong ability to prepare specifications, schedules, contract documentation and budget‑aligned design deliverables. Proven experience leading complex projects and multidisciplinary teams. Excellent communication skills and confidence engaging with clients at senior levels. Chartered Engineer status (or working towards it) with a recognised institution.

In addition, you will be joining a community that focuses on learning and development through regular lunch and learn sessions, investment in accredited professional courses or educational programmes. You can set the pace for your professional development, and whatever path you choose, you will receive relevant support.

Company Overview

Black & White Engineering is a multi‑award‑winning engineering consultancy with offices across the UK, Europe, the Middle East and Asia Pacific. We are a leading provider of engineering design services for the data centre sector, delivering expertise across Mechanical, Electrical and Plumbing (MEP), Civil and Structural, Power Systems, Sustainability, BIM, Design Management and wider specialist infrastructure disciplines. Our teams support projects across all areas of the construction industry, offering practical, efficient design solutions that prioritise real‑world installation, maintenance and operational performance. As one of the fastest‑growing consultancies in our industry, we offer genuine opportunities for progression - many of our engineers have developed into leadership roles as the business has expanded. Joining Black & White means making a meaningful impact with clients and colleagues, while receiving the recognition you deserve.

Senior/Principal Mechanical Engineer (Data Centres) in London employer: Black & White Engineering

At Black & White Engineering, we pride ourselves on being an excellent employer, offering a dynamic work culture that fosters collaboration and innovation. Our Newcastle, Manchester, and London offices provide unique opportunities for professional growth, with access to cutting-edge projects in sustainability and emissions consultancy. We are committed to supporting our employees' development through continuous training and a strong emphasis on work-life balance, making us an attractive choice for those seeking meaningful and rewarding careers.

Black & White Engineering

Contact Details:

Black & White Engineering Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior/Principal Mechanical Engineer (Data Centres) in London

Get Your Hands Dirty at Engineering Events

Join local engineering meetups or industry conferences related to mechanical engineering. Whether it's a workshop or a career fair, these events are goldmines for networking and getting a foot in the door. Plus, you can showcase your passion and enthusiasm directly to potential employers like Black & White Engineering.

Connect with Professors & Peers

Tap into your university’s resources—professors often have connections in the industry. Don’t be shy to ask about potential openings or recommendations. Your classmates might also know of companies hiring. Often, it’s who you know that gets you in front of the right people!

Highlight Your Projects and Practical Experience

When you land those interviews, make sure to talk about your hands-on projects or internships. Whether it's a design project or hands-on experience with CAD software, specific examples will make you stand out. Companies like Black & White Engineering love to hear about practical applications of your skills.

Apply Directly on Company Websites

Check out the careers page of Black & White Engineering and apply directly through there. It shows initiative and interest in their specific values. Plus, you'll often find openings that aren't advertised on job boards, giving you a better chance to land that full-time gig!

We think you need these skills to ace Senior/Principal Mechanical Engineer (Data Centres) in London

Mechanical Engineering
HVAC System Design
Cooling Strategies for High-Density Environments
Chilled Water Systems
Air Handling Units (AHUs)
Heat Rejection Systems
AutoCAD

Some tips for your application 🫡

Show Off Your Technical Expertise:In mechanical engineering, it’s vital to highlight your technical skills and projects. Make sure to include relevant software proficiency (like CAD tools) in your CV. If you've worked on specific engineering projects, detail your key contributions — we want to see how you’ve applied your skills in a practical setting!

Focus on Problem-Solving Examples:Employers in mechanical engineering love to see how you handle challenges. Use your cover letter to share specific instances where you’ve solved a complex problem or improved a design. This will show us you're not just knowledgeable but also capable of applying that knowledge effectively.

Highlight Relevant Certifications:Include any relevant certifications or training that can set you apart from the competition. Whether it's coursework from your degree, a recognised certification, or extra training in new technologies, we love to see candidates who continuously improve their skill set. This tells us you're serious about your career in engineering!

Tailor Your CV for the Role:Don’t forget to customise your CV for Black & White Engineering and the Senior/Principal Mechanical Engineer (Data Centres) role specifically. Pull examples from your experience that align with the job description — it shows us you've done your research and are genuinely interested in becoming part of the team. We recommend applying through our website to ensure your application gets to the right people!

How to prepare for a job interview at Black & White Engineering

Brush Up on Your CAD Skills

Since mechanical engineering often involves design processes, be ready to showcase your proficiency in CAD software like SolidWorks or AutoCAD. Bring along a digital portfolio or even some sketches that demonstrate your design capabilities — it’s a great way to show what you can bring to the table at Black & White Engineering.

Prepare for Technical Questions

Expect technical questions that test your understanding of engineering principles and problem-solving skills. You might get hypothetical scenarios where you need to design a component or troubleshoot a mechanical system. Practising these types of questions will give you the confidence to tackle whatever comes your way!

Show Your Team Spirit

As a full-time mechanical engineer, collaboration is key! Be ready to share examples of past team projects or any experiences where you contributed to solving a complex problem with others. Demonstrating your ability to work in a team will resonate well with the interviewers at Black & White Engineering.

Discuss Your Future Goals

Since this is a full-time position, your long-term vision is important. Be open about your career aspirations, whether it’s mastering a specific tool or leading projects. This shows that you're committed not just to learning but also to growing with Black & White Engineering, making you a more appealing candidate.