Hays
Senior / Principal Mechanical Engineer (Global Consultancy)

How your CV stacks up
Upload your CV to see how well it fits this job role
?%
Your new company
A leading global multi-disciplinary consultancy is seeking a Senior or Principal Mechanical Engineer to join its established Building Engineering team in Belfast.
The business delivers technically challenging and innovative projects across the UK and internationally. Its portfolio includes rail infrastructure, science and technology developments, university buildings, healthcare facilities and complex sustainable residential projects.
This is an excellent opportunity to join a highly regarded consultancy known for technical excellence, sustainable design and clear opportunities for professional development and career progression.
Your new role
As a Senior or Principal Mechanical Engineer, you will play a key role within the Building Services team, leading the design and delivery of mechanical engineering solutions across a range of multidisciplinary projects.
Responsibilities will include:
- Leading mechanical building services projects from concept through detailed design and delivery.
- Developing mechanical system strategies and sustainable engineering solutions.
- Coordinating with architects, clients and multidisciplinary design teams.
- Overseeing thermal comfort and building performance analysis.
- Managing the production of calculations, models, drawings, reports and specifications.
- Ensuring projects are delivered to programme, budget and quality standards.
- Managing resources and supporting the development of junior engineers.
- Building strong client relationships and attending project meetings.
- Contributing to fee proposals, project bids and work-winning activities.
- Supporting the integration of low-carbon and renewable technologies into project designs.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
See breakdownIt searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
What you'll need to succeed
You will have a strong background in Mechanical Building Services Engineering gained within a consultancy or design environment, together with experience delivering complex projects from concept through to completion.
To be considered, you should have:
- A degree in Mechanical Engineering, Building Services Engineering or a related discipline.
- Significant experience in mechanical building services design.
- Experience leading or coordinating multidisciplinary projects.
- Strong knowledge of mechanical building systems, design standards and industry regulations.
- An interest in sustainable design, energy efficiency and carbon reduction.
- Experience integrating renewable technologies and carrying out suitability assessments.
- Knowledge of IES or similar building performance modelling software would be advantageous.
- Strong communication, leadership and stakeholder management skills.
- Commercial awareness, including project planning, resource management and fee preparation.
- Chartered Engineer status through CIBSE or IMechE would be beneficial but is not essential. Applications are also welcomed from experienced engineers currently working towards chartership.


Get help with your application
Your very own career expert that helps elevate your application to the next level.
What you'll get in return
Joining one of the world's leading engineering consultancies offers the opportunity to work on landmark projects alongside highly respected industry professionals.
In return, you'll receive:
- A highly competitive salary.
- Profit Share Scheme.
- Healthcare Plan.
- Life Assurance.
- Accident Insurance.
- Income Protection cover.
- Flexible and hybrid working arrangements.
- Ongoing training and professional development.
- Support towards achieving Chartered Engineer status.
- Exposure to high-profile local, national and international projects.
- Clear opportunities for progression within a collaborative and highly respected team.
What you need to do now
If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.
Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London