Graduate HVAC Engineer

Job Description

Please note you may only submit one application for our graduate opportunities. Once submitted, changes or new applications cannot be made — unless new vacancies open in the new year.

To avoid missing out on your preferred role, we recommend applying as early as possible, as positions will close once filled.

Turn your ambition into action—apply now and shape your future with us.

Please note candidates must be able to speak English and the language of the country you have applied for.

Job Description

As a Graduate HVAC Engineer, you’ll join a diverse, collaborative, and supportive global team. You’ll contribute to some of the world’s most exciting defence and nuclear new-build projects, working alongside passionate professionals who are committed to engineering a better tomorrow.

What You’ll Do

You’ll play a key role in delivering integrated engineering and project management services across the full project lifecycle—from concept and design to construction, commissioning and operations. Your work will include:

• Supporting major international innovative project developments across the defence and nuclear industries, specializing in the field of building services (HVAC).
• Providing technical input from feasibility to construction and acceptance.
• Delivering technical advisory and due diligence for developers, lenders, and investors.
• Contributing to owner’s engineering, construction supervision, and design services.
• Preparing high-quality technical reports, design, specifications, and proposals in compliance with industry standards.
• Supporting tender processes and developing technical documentation.
• Engaging in client meetings and site visits worldwide.
• Collaborating across disciplines to deliver impactful, timely solutions

Candidate Specification:

At Mott MacDonald, we’re looking for curious, motivated graduates who want to make a real difference. Join our purpose-driven teams where your ideas matter, your growth is supported, and your work enhances the world we live in.

All our opportunities require a relevant bachelor’s degree as a minimum requirement, some of our opportunities will also require a master’s degree - this will be reflected in the list of opportunities available in our application form

To be eligible for this opportunity, you will have less than 12 months’ relevant experience (excluding placements) and have a degree (obtained no earlier than 2024) or expected to achieve one of the following degree disciplines:

• Building Services (HVAC) Engineering
• Mechanical (HVAC) Engineering

In your application, you should aim to demonstrate your genuine interest in both the opportunity and in joining Mott MacDonald. You can do this by highlighting any relevant experience or interests—such as modules you've studied, previous work experience, or any research you've undertaken about our company, values, and projects.

We personally review every completed application we receive as our selection process is entirely human led – we do not use AI tools and kindly expect you not to either. We want you to answer each application question with authenticity so we can get to know the real you. Joining us a graduate is your opportunity to shape your own story

We are looking for graduates with the following strengths:

• Proactively takes initiative to complete tasks efficiently and independently.

• Communicates effectively and clearly with clients and colleagues.

• Delivers high quality written work with strong attention to detail and clarity.

• Demonstrates a structured and analytical approach to problem solving.

As we want the best people for the role, we support flexible working. Please ask us at interview stage about any flexibility you may need.

We have opportunities in the following locations: Sofia – Bulgaria.

About your development

A graduate position should be more than just a job. We know this and so do you. That’s why with our graduate roles; we aim to give you the experience and technical knowledge you need to progress your career.

From the moment you join us, you’ll receive the training you need. You will be assigned a chartered mentor, who will guide you to meet the objectives of your professional training agreement. We’ll support you on your journey to gaining chartered status with your chosen institution.

Accelerating your Future – our early careers development programme

Mott Macdonald will support the development of technical and practical skills like presentation and report writing skills, and data analysis, alongside your personal development. Additionally, you will join our three-year early careers soft skills development programme – Accelerating your Future, which is designed to give you the skills and tools necessary for a long-lasting successful career here at Mott MacDonald.

You will have the opportunity to make a difference; learn more about our Social Outcomes and the difference we can make!

You’re probably wondering what else is on offer. Join us, and you’ll get:

• Biannual salary reviews: we believe that hard work should be rewarded and recognised. Therefore, for the first three years of your career with us, you’ll have biannual salary reviews.

• A competitive salary: in addition to biannual reviews, we will ensure that you’re given a salary that matches the current industry standard.

In addition to this you will also receive location specific benefits, which will be shared at offer stage.

Our social side

Being part of Mott MacDonald means more than just work; there’s a huge range of fun and exciting things that you can get involved in.

From the moment you join us, you’ll have the opportunity to expand your social and professional network, whether it’s meeting other graduates or joining forces with other members of staff from around the company at our annual sports day. Each of our offices have a sports and social committee which will give you the chance to be part of a variety of sports, social and charity events. We’re committed to promoting a strong culture of social responsibility and encourage our staff to play active roles in the local community.

It's worth noting that sports and social committees tend to vary from office to office, so as well as getting involved in what’s already on offer, don’t be afraid to suggest new events or initiatives that you think could be a great addition. It doesn’t stop there. As well as events, you’ll also have access to discounts on cinema tickets, travel, fashion, utilities and much more as part of our company benefits which you can take advantage of the moment you join.

We welcome applications from individuals at all experience levels who believe they possess the necessary skills. We are committed to fostering a diverse and inclusive workplace, and we encourage candidates from all backgrounds to apply.

Agile working

At Mott MacDonald, we believe it makes business sense for you and your manager to choose how you can work most effectively to meet your client, team, and personal commitments. We offer a hybrid working policy that embraces your well-being, flexibility, and trust.

Equality, diversity and inclusion

We put equality, diversity and inclusion at the heart of our business, seeking to promote fair employment procedures and practices to ensure equal opportunities for all. We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they have the opportunity to contribute.

Accessibility

We want you to perform your best at every stage in the recruitment process. If you are disabled or need any support to enable you to apply or attend an interview, please contact us at reasonable.adjustments@mottmac.com and we will talk to you about how we can support you.