Job Description

We're AtkinsRealis, a world class Engineering Services and Nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. Created by the integration of long-standing organizations dating back to 1911, we are a world-leading professional services company dedicated to engineering a better future for our planet and its people. We deploy global capabilities locally to our clients and deliver unique end-to-end services across the whole life cycle of an asset including consulting, advisory & environmental services, intelligent networks & cybersecurity, design & engineering, procurement, project & construction management, operations & maintenance, decommissioning and capital. The breadth and depth of our capabilities are delivered to clients in key strategic sectors.
News and information are available at or follow us on LinkedIn.
Our teams take great pride in delivering some of the world's most prestigious projects. This success is driven by our talented people, whose diverse perspectives, expertise, and knowledge set us apart. Join us and you'll be part of our genuinely collaborative environment, where everyone is supported to make the most of their talents and expertise.
When it comes to work-life balance, AtkinsRealis is a great place to be. So, let's discuss how our flexible and remote working policies can support your priorities. We're passionate about are work while valuing each other equally. So, ask us about some of our recent pledges for Women's Equality and being a 'Disability Confident' and 'Inclusive Employer'.
At AtkinsRealis, one of the world's leading multi-disciplinary consultancy firms for engineering, design, and construction, we offer unparalleled opportunities for talented individuals in search of a rewarding career. Here, we provide more than just a job; we offer an opportunity to make a difference and shape the world for future generations and the environment.
Following a very successful 2025, AtkinsRealis is looking for a talented Mechanical Engineer to support a variety of exciting projects, including Hinkley Point C (HPC), Sizewell C (SZC), Small Modular Reactors (SMR), and other Nuclear Projects. The role offers the opportunity to work on high-profile nuclear infrastructure projects. You'll be joining a friendly and rapidly growing MEP team which is a part of Nuclear New Build (NNB) business. The team specializes in supporting the delivery of nuclear new build projects for major operators in the nuclear sector.
As an HVAC Engineer, you will be responsible for providing consultancy services to our clients. This includes and not limited to:

• Developing and reviewing HVAC system designs, ensuring they meet project requirements and industry standards.
• Conducting feasibility studies and technical assessments to identify optimal solutions for mechanical systems.
• Preparing detailed specifications, calculations, and technical reports.
• Providing technical guidance and support during the construction, installation, and commissioning phases of projects.
• Preparing HVAC system design including load calculations, equipment selection, duct and piping layout, and control systems.
• Ensuring compliance with health, safety, and environmental regulations.
• Collaborating with clients to understand their needs and deliver tailored solutions.
• Keeping up to date with the latest industry trends and technologies to provide innovative solutions.
• Undertake design and review of a variety of Mechanical design elements i.e., Air conditioning, ventilation, tunnel ventilation, plumbing and firefighting designs.
• Prepare and validate BOQs for HVAC systems including equipment, accessories, ductwork, piping and accurately estimating man-hours for HVAC design.
• You will be a competent designer to CIBSE, SMACNA and ASHARE standards.

Key Responsibilities:

• Assist in the design, optioneering, evaluation, and assessment of mechanical systems, ensuring compliance with industry standards.
• Collaborate with multi-disciplinary teams, including Mechanical, Process, and Civil/Structural engineers, to support project delivery.
• Provide technical support and contribute to the resolution of project challenges.
• Participate in project meetings and contribute to the development of project plans and schedules.
• Support the preparation of technical documentation, including reports, specifications, and drawings.
• Engage in continuous professional development to enhance technical skills and knowledge.
• Should be able to review 3D models.
• Preparation of Load Estimation, Sizing of equipment's, Pump head calculation etc.
• Software Skills required: Hevacomp, HAP and IES, Navisworks & Revit.

Ideal Candidate:

• Graduate or Post-graduate Degree in Mechanical Engineering from a recognised university.
• 7+ years and above working experience in HVAC systems, preferably within the nuclear or energy sector.
• Strong problem-solving skills and the ability to work collaboratively in a team environment.
• Good communication skills and the ability to present technical information clearly.
• Eager to learn and develop professionally, with a proactive approach to work.
• Working towards Chartered Engineer (CEng) status is desirable.
• Experience with AutoCAD, Revit MEP, or similar CAD/BIM tools is a plus.

What We Can Offer You:

• Varied, interesting and meaningful work.
• A hybrid working environment with flexibility and great opportunities.
• Opportunities for training and, as the team grows, career progression or sideways moves.
• An opportunity to work within a large global multi-disciplinary consultancy on a mission to change the ways we approach business as usual.

Why work for AtkinsRealis?
We at AtkinsRealis are committed to developing its people both personally and professionally. Our colleagues have the advantage of access to a high ranging training portfolio and development activities designed to help make the best of individual's abilities and talents. We also actively support staff in achieving corporate membership of relevant institutions.
Meeting Your Needs:
To help you get the most out of life in and outside of work, we offer employees 'Total Reward'.
Making sure you're supported is important to us. So, if you identify as having a disability, tell us ahead of your interview, and we'll discuss any adjustments you might need.
Additional Information:
We are an equal opportunity, drug-free employer committed to promoting a diverse and inclusive community - a place where we can all be ourselves, thrive and develop. To help embed inclusion for all, from day one, we offer a range of family friendly, inclusive employment policies, flexible working arrangements and employee networks to support staff from different backgrounds. As an Equal Opportunities Employer, we value applications from all backgrounds, cultures and ability.
We care about your privacy and are committed to protecting your privacy. Please consult our on our Careers site to know more about how we collect, use and transfer your Personal Data.
Link:
Worker Type Employee
Job Type Regular
At AtkinsRealis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences.

Skills Required