Senior / Principal Mechanical Building Services Engineer

AtkinsRéalis UK Limited; Manchester; On-site; GBP 45,000 - 65,000; Full time

Job summary

AtkinsRéalis UK Limited in Manchester is seeking a Mechanical Building Services Engineer to join its delivery team. You will design and specify mechanical building services from concept through detailed design, including HVAC and public health systems, while contributing to high-profile projects across sectors and maintaining strong stakeholder relationships.

You will perform engineering calculations with tools such as Hevacomp, MEPworx and IES, develop specifications and reports, collaborate

Job description

Job Description Overview

AtkinsRéalis’ Engineering and Design Practice is seeking a motivated Mechanical Building Services Engineer to join its Manchester-based team. This role offers the opportunity to work within a nationally connected delivery team, collaborating with professionals across the UK and globally through the Global Technology Centre. You will contribute to delivering high-quality engineering design solutions across a diverse range of sectors, including Commercial, Defence, Energy, Education, and Healthcare. The role provides exposure to high-profile projects such as Manchester Digital Campus, Canary Wharf, and major infrastructure and defence programmes, offering valuable experience in complex, multidisciplinary environments. The position combines technical design responsibilities with client interaction, providing an excellent platform to develop both engineering expertise and stakeholder management skills. With a strong focus on sustainability, digital innovation, and career development, this role will enable you to enhance your technical, project management, and digital capabilities within a supportive, forward-thinking environment that values growth and continuous learning.

Your Role

Design and specify mechanical building services systems from concept through to detailed design, including HVAC and public health systems. Perform detailed engineering calculations using industry-standard tools such as Hevacomp, MEPworx, and IES, supporting team outputs where required. Develop and review technical specifications, reports, and presentations, ensuring alignment with best practices and project requirements. Collaborate with multidisciplinary and BIM teams to coordinate models, drawings, and overall design deliverables. Engage with clients and key stakeholders, representing the organisation in meetings and technical discussions. Conduct site surveys, inspections, and oversee installation and commissioning activities to ensure quality and compliance. Manage individual workload effectively, contributing to the successful delivery of projects within timelines and budgets. Provide technical guidance and mentorship to junior team members, supporting their professional development.

About You

Proven experience in mechanical building services engineering with a strong track record of delivering high-quality design solutions. Ability to work independently, taking ownership of technical delivery and solving complex engineering challenges across project stages. Degree (or equivalent) in Building Services Engineering, Mechanical Engineering, or a related discipline. Progressing towards, or holding, Chartered membership (CIBSE, IMechE, or equivalent). Proficiency in industry-standard tools such as IES, Hevacomp, Revit, NBS, and Microsoft Office; experience in thermal modelling is advantageous. Strong knowledge of UK technical standards and codes, with the ability to apply sound engineering judgement and communicate effectively. Experience collaborating across multidisciplinary teams and engaging with clients, with the ability to mentor junior engineers. Understanding of energy efficiency, decarbonisation strategies, and performance evaluation, including commissioning and post-installation assessment.

Rewards & benefits

Explore the rewards and benefits that help you thrive – at every stage of your life and your career. Enjoy competitive salaries, employee rewards and a brilliant range of benefits you can tailor to suit your own health, wellbeing, financial and lifestyle choices. Make the most of a myriad of opportunities for training and professional development to grow your skills and expertise. And combine our hybrid working culture and flexible holiday allowances to balance a great job and fulfilling personal life. Be rewarded. Find out more.

About AtkinsRéalis

We’re AtkinsRéalis, 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. We’re committed to leading our clients across our various end markets to engineer a better future for our planet and its people. Find out more.

Additional information

Security clearance This role may require security clearance and offers of employment will be dependent on obtaining the relevant level of clearance. If this is necessary, it will be discussed with you at interview. The vetting process is delivered by United Kingdom Security Vetting (UKSV) and may require candidates to provide proof of residency in the UK of 5 years or longer. If applying to this role please do not make reference to (in conversation) or include in your application or CV, details of any current or previously held security clearance.

We are committed to creating a culture where everyone feels that they belong - a place where we can all be ourselves, thrive and develop to be the best we can be. So, we offer a range of family friendly, inclusive employment policies, flexible working arrangements and employee resource groups to support all employees. As an Equal Opportunities Employer, we value applications from all backgrounds, cultures and ability. #LI-INFRASTRUCTURE | #LI-UK Worker Type Employee Job Type Regular At AtkinsRéalis, 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.

Created by the integration of long-standing organizations dating back to 1911, AtkinsRéalis is a world-class engineering services and nuclear company dedicated to engineering a better future for our planet and its people. We create sustainable solutions that connect people, data and technology to transform the world's infrastructure and energy systems. 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 strategic sectors such as Engineering Services, Nuclear and Capital. News and information are available at Atkinsrealis or follow us on LinkedIn.