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WSP in the UK & Ireland

Principal Mechanical Engineer (Building Services)

Southampton
Posted 3 months ago
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Job Description

What if you could do the kind of work the world needs?

At WSP, you can access our global scale, contribute to landmark projects and connect with the brightest minds in your field to do the best work of your life. You can embrace your curiosity in a culture that celebrates new ideas and diverse perspectives. You can experience a world of opportunity and the chance to shape a career as unique as you.

To find out more about our Building Services business click on the following link and discover what awaits you at WSP: https://www.wsp.com/en-GB/hubs/property-and-buildings

A Little More About Your Role…

As a principal mechanical engineer you will be taking a leading role in a number of our most prestigious projects.

General

Work in a joint leadership capacity within a mechanical, electrical and public health (MEP) discipline team providing design and technical advice in a WSP project manager capacity on a wide range of projects. Supervise the completion of detailed designs and supervise the work of others in this function Consider the feasibility of the project and lead the overall feasibility study Take responsibility for and direct others in the production of detailed/performance specification Act as the client’s key point of contact and responsible for overall project delivery in terms of client deliverables and internal KPI’s

Business Development

Provide excellent client care & the opportunities to develop additional business for the team Assist with developing the client relationship to promote new commissions Promote WSP’s capabilities and expertise in the region

Management

Take responsibility for and direct others in the production of detailed and performance specification for the discipline subject to review by colleagues prior to issue. Development and line management of junior staff. Regularly brief the project team, explaining the appointment. Ensure contracts/letters of intent are in place for all projects before work starts Maintain project overview & understanding of the team workload & associated resource requirements, and work with the team leaders to ensure resources are fully utilised across your associated projects. Hold regular team meetings to discuss resourcing, staff issues, H&S, quality, training & development & all other relevant issues, including UK & Board briefs in support of your Discipline’s Team Leader The Heathrow team is a close group of engineers working together in an effective and cooperative team atmosphere with a flexible hybrid working model to working practices. Our team find this a hugely beneficial feature of managing a healthy work life balance The Heathrow team are directly involved in mission critical building and infrastructure projects at Europe’s busiest airport. We will be looking to you to not only be a client facing representative of WSP, but also to lead an engineering delivery team in providing innovative and sustainable solutions. As part of the wider WSP team we will be looking to you to incorporate our philosophies of sustainability, net zero carbon, digital design, modern methods of construction and smart systems into your design work.

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.

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Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your 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.

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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.

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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.

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Your Team

Our team is comprised of 10 engineers and part of a wider group of 35 engineers working across the Mechanical, Electrical and Public Health specialisms in Guildford and Basingstoke. Whilst our core team is Heathrow based, we have a ability of work from our Southampton, Basingstoke and Guildford sites, or from home, for some of the week. Many of our team choose to alternate the office they work in to suit personal needs. You will be reporting to our Heathrow Director, Huso Yildirim, and be responsible for both technical and project delivery elements. You will have a team of graduate, senior and principle engineers in supporting roles around you, as well as dedicated BIM and Sustainability specialists to contribute to your projects.

What We Will Be Looking For You To Demonstrate…

Have the ability to work as part of a team, but also take a leading role in managing engineers towards the delivery of our key projects. Be able to apply technical judgment and resourcefulness to feasibility studies, concept, scheme and detailed design, as well as construction support phases of projects Able to represent WSP to our clients, whilst also understanding and delivering client needs in engineering solutions. Have a working knowledge of UK mechanical building services design, including relevant standards, codes and regulations and a proven track record of delivering a variety of UK Building Services MEP (Mechanical, electrical, and plumbing) projects both in terms of scale and sector. Have a working understanding of latest mechanical design software packages to allow the allocation / direction of work on projects. Proven understanding of working with Revit MEP or other 3D design software to allow the allocation / direction of work on projects. Be able to manage the technical, cost and programme elements of project delivery. Must be able to obtain UK vetting level of Security Check (SC)

Don’t quite meet all the criteria? Apply, and we can see how your experience aligns to this role and other opportunities within the team.

Imagine a better future for you and a better future for us all.

Join our close-knit community of talented individuals who share your passion for making a positive impact. Our global team includes more than 69,000 employees, working together to make a difference in communities both close to home and around the world.

With us, you can. Apply today.

About Us

We are one of the world’s leading engineering and professional services firms. Our 72,800 passionate people are united by the common purpose of creating positive, long-lasting impacts on the communities we serve through a culture of innovation, integrity, and inclusion. With over 9,000 professionals across the UK and Ireland, we are dedicated to our local communities and propelled by international brainpower.

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WHAT’S IN IT FOR YOU?

Work-life balance

At WSP, we understand that work is just one aspect of your life. It’s important to make time for you, your family, friends, interests and your community.

Our hybrid working policy offers the flexibility to work from home two days a week, while also providing opportunities to collaborate in our modern offices across the UK.

Inclusivity & Belonging

We welcome applicants with varied backgrounds and experiences. We enable rewarding careers by encouraging people to bring their whole and authentic selves to work so that our work represents the fullest spectrum of society. We celebrate integrity and treat people with respect, supporting each other and embracing a culture of inclusion and belonging at WSP. We have our employee resource groups bring together employees and allies with different backgrounds to promote our culture of inclusivity.

Health & Wellbeing

We are committed to supporting our people, giving you the tools to make improvements to your health and wellbeing through our Thrive programme.

Our Virtual GP service gives you access to an NHS or Irish Medical Council GP at a time and place that suits you – giving you peace of mind and quick access to medical advice when you need it most. We also provide reasonable workplace adjustments for those in need. Additionally, you can benefit from the Gymflex scheme, which offers up to 40% off annual gym memberships through our WSP flexible benefits program, as well as a comprehensive menopause support package.

Flex your time

To enhance work-life balance, WSP offers the “WSP My Hour,” allowing you to take one hour each day for personal activities, with the flexibility to make up the time earlier or later that day.

We also provide part-time and flexible working arrangements, the option to purchase additional leave, and the ability to use your bank holiday entitlement to suit you.

Your development

We understand the importance of development and training to you. That’s why we foster a supportive environment that invests in your growth, whether through training, mentoring, or Chartership.

#WeAreWSP

Here at WSP we positively encourage applications from suitably qualified and eligible candidates regardless of sex, race, disability, age, sexual orientation, gender reassignment, religion or belief, marital status, pregnancy or maternity/paternity. As a Disability Confident leader, we will interview all disabled applicants who meet the essential criteria, please let us know if you require any workplace adjustments in support of your application.

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Skills

Mechanical Engineering
Building Services
Project Management
Client Relations
Feasibility Studies
Design Software
Revit MEP
Sustainability
Team Leadership
Technical Judgement
Cost Management
Programme Management
Public Health
Digital Design
Construction Support
Resource Management

Location

Southampton, England, United Kingdom

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