Senior / Principal Mechanical Engineer

Arup; Greater London; Hybrid; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Private medical insurance

Life assurance

Accident insurance

Income protection

Job summary

Arup in London is seeking a Senior / Principal Mechanical Engineer specialised in SIT projects to lead HVAC and mechanical design for critical environments. You will develop detailed design models, run simulations, and mentor junior engineers while coordinating across disciplines.

The role offers leadership across multiple large-scale projects with emphasis on cooling performance, resilience and energy efficiency within Arup's global network.

Qualifications

• Chartered Engineer (or within 6–12 months) in Building Services (CIBSE/IMechE).
• Significant experience in Mechanical Engineering within a consulting environment.
• Experience across all design and construction stages, including cooling solutions, PUE/WUE, resilience/TIER levels, testing/commissioning.
• Proficiency in design and energy modelling software.
• Experience leading development and implementation of Mechanical Engineering solutions across varied projects.
• Supervising and coordinating work with engineers of other disciplines.

Responsibilities

• Lead collaborative efforts to develop detailed design models and simulations for mechanical and HVAC systems.
• Spearhead complex mechanical designs for critical environments focusing on cooling efficiency.
• Drive innovative mechanical designs for HVAC systems using cutting‑edge technologies.
• Proactively manage project activities and mentor junior team members.
• Represent the team in internal and client meetings with expert insights.

Skills

Chartered Engineer

Building Services

Mechanical design

HVAC systems

Project leadership

Mentorship

Tools

Energy modelling tools

Design software

Job description

Arup’s purpose, shared values and collaborative approach has set us apart for over 80 years, guiding how we shape a better world.

Arup’s Science, Industry, Healthcare and Data Centre Team is a global network of Architects, Engineers and Specialist Consultants working with a diverse portfolio of the largest and most innovative businesses across each sector.

Join our London multidisciplinary design team as a Senior / Principal Mechanical Engineer which specialises in SIT projects globally placing innovation, sustainability,decarbonisationand excellence at the heart of our designs.You will not only lead the design and implementation of cutting‑edge mechanical solutions.

As a seasoned professional working in the field, you will spearhead collaborative efforts to develop detailed design models and simulations, ensuring optimal performance and efficiency in HVAC systems tailored for system critical environments. Beyond this, you will have the opportunity to lead MEP initiatives and wider project endeavours.

Your strategic mindset and ability to effectively manage project activities will be paramount in driving success and delivering exceptional results. This role offers ambitious candidates the chance to not only excel in mechanical engineering but also to expand their leadership capabilities and make a significant impact on projects of varying scale and complexity within the SIT sectors.

• Lead collaborative efforts within the team to develop detailed design models and simulations for the mechanical and HVAC systems, utilising advanced modelling techniques and industry best practices.
• Spearhead the design of complex mechanical systems tailored specifically for critical environments, ensuring optimal performance and efficiency in cooling.
• Drive the development of innovative mechanical designs for HVAC systems incorporating cutting‑edge technologies.
• Proactively manage project activities to ensure alignment with strategic and commercial objectives and effectively address any significant conflicts or challenges, leveraging extensive expertise to provide guidance and mentorship to junior team members.
• Assume primary responsibility for designated segments of design projects, ensuring adherence to rigorous quality standards and precision in execution, while representing the team in key internal and client‑facing meetings to provide expert insights and recommendations.

At Arup, you belong to an extraordinary collective – in which we encourage individuality to thrive. Our strength comes from how we respect, share and connect our diverse experiences, perspectives and ideas.

You will have the opportunity do socially useful work that has meaning – to Arup, to your career, to our members and to the clients and communities we serve.

Is this role right for you?

We are looking for a candidate who:

• Is a Chartered Engineer (or within 6–12 months of achieving it) in Building Services. (CIBSE / IMechE)
• Has significant experience in Mechanical Engineering within a consulting business environment.
• Experience across all design and construction stages, including cooling solutions, PUE/WUE efficiency, resilience/TIER levels, and testing/commissioning.
• Proficiency in relevant software including design and energy modelling tools.
• Experience in leading the development and implementation of Mechanical Engineering solutions across a range of projects, including calculations, models, reports, drawings and specifications.
• Supervising and coordinating the work of others and coordinating work with engineers of other disciplines including in-house specialists

What we offer you

At Arup, we care about each member’s success, so we can grow together. Guided by our values, we provide an attractive total reward package that recognises the contribution of each of our members to our shared success. As well as competitive, fair and equitable pay, we offer a career in which all of our members can belong, grow and thrive – through benefits that support health and wellbeing, a wide range of learning opportunities and many possibilities to have an impact through the work they do.

We are owned in trust on behalf of our members, giving us the freedom, with personal responsibility, to set our own direction and choose work that aligns with our purpose and adds to Arup’s legacy. Our members collaborate on ambitious projects to deliver remarkable outcomes for our clients and communities. Profit Share is a key part of our reward, enabling members to share in the results of our collective efforts.

We also provide Private medical insurance, Life assurance, Accident insurance and Income protection cover. In addition, you’ll have access to flexible benefitsto help you look after all aspects of your wellbeing and give you the freedom and flexibility to find the best solutions for you, your family, and your individual needs.

Different people, shared values

Arup is an equal opportunity employer that actively promotes and nurtures a diverse and inclusive workforce. We welcome applications from individuals of all backgrounds, regardless of age (within legal limits), gender identity or expression, marital status, disability, neurotype or mental health, race or ethnicity, faith or belief, sexual orientation, socioeconomic background, and whether you’re pregnant or on family leave. We are an open environment that embraces diverse experiences, perspectives, and ideas – this drives our excellence.

Guided by our values and alignment with the UN Sustainable Development Goals, we create and contribute to equitable spaces and systems, while cultivating a sense of belonging for all. Our internal employee networks support our inclusive culture: from race, ethnicity and cross‑cultural working to gender equity and LGBTQ+ and disability inclusion – we aim to create a space for you to express yourself and make a positive difference. Discover more about life at Arup at www.arup.com/careers/your-life-at-arup.

We are committed to making our recruitment process and workplaces accessible to all candidates. Please contact us to let us know if you need any assistance or reasonable adjustments throughout your application or interview process, and/or to perform the essential functions of the role. We will do everything we can to support you.

Stay safe online – Arup will never ask for your bank details as part of our recruitment process.