Principal Engineer (Electrical) United Kingdom London Application Deadline 20 February 2026

Do you want to be part of a global delivery team? Can you deliver quick and reliable services? Are you experienced in data centre design? Then, kick start your career by making solutions that enable a better tomorrow!

To grow our Infrastructure MEP capability, we are looking for a Principal Electrical Engineer with Data Centre experience to join us. Working for UK and international clients, you’ll have the ability to run multiple concurrent medium sized projects and to be a part of the growth of COWI's Data Centre Design Business in Scandinavia while being at the heart of the development of the COWI UK&I Data Centre Design Team.

You’ll undertake a client facing role in the development, design & coordination of infrastructure projects, which could include producing design packages for contractors working on a design & build contract.

Your key responsibilities will be:

• Overseeing engineering work related to the design and specification of MV/LV power systems and distribution, including the production of single line diagrams, load schedules, cable calculations, and general arrangements.
• Overseeing the design of other electrical systems, including fire alarm, security, lighting design, lightning protection, earthing, etc.
• Supervising the preparation of technical specifications.
• Collaborating with multidisciplinary teams, particularly with the BIM team, to prepare design models and drawings.
• Conducting thorough technical reviews of electrical designs, calculations, and specifications, ensuring accuracy and adherence to project requirements.
• Ensuring that manufacturing, construction, installation, and operational testing conform to functional specifications and customer requirements.
• Participating in project meetings, site surveys and inspections.
• Adhering to all quality and governance processes.

Your skills. Our team. Together we design the future. The first step to success in this role is that you are eager to collaborate with the people around you, whether they are colleagues, partners, or customers. Developing ties with others is something you do by acting respectfully and delivering on your promises. And you never get set in your ways but keep exploring new insights and ways to improve.

On top of that, you’ll have:

• A degree in Electrical Engineering.
• Chartered Engineer status or a similar professional qualification.
• Recent experience in electrical designs of Data Centres ideally covering all aspects of Data Centre design.
• The ability to provide technically sound solutions alone and as a discipline lead.
• Experience working on large scale infrastructure design projects.
• Experience in using related software including Amtech & other digital design packages.
• Proficiency in working with BIM software such as Revit, Open Buildings Designer or similar.
• Awareness and knowledge of energy reduction methods, carbon calculations, and sustainable design (particularly low energy).
• A good understanding of British and Industry recognised technical standards and regulations.
• The ability to prioritise own workload and to work to deadlines.
• Knowledge of CDM2015 regulations, with an understanding of key health and safety issues and legislation.

At COWI, we work together with our customers to shape a sustainable and liveable world. We do it by applying our knowledge and curiosity – and sometimes even our courage – to create the solutions the world needs today to enable a better tomorrow. We aspire to have 100% of our revenue come from activities that move our customers towards sustainability. We value differences and development and cultivate an environment of belonging and having fun.

What we also offer:

• 28 days' holiday plus all UK bank and public holidays.
• Formalised development plans and yearly promotion opportunities.
• Private health care, for you and your immediate dependents.
• Flexible and hybrid working conditions.
• Annual subscription fees paid for your membership of two Professional Institutions.
• Group personal pension scheme – salary exchange.
• Life assurance.

If you have any unanswered questions about the role or what we have to offer, please reach out to Talent Acquisition Specialist Laura Dobson at LADN@COWI.COM.

Get to know us even better at our website, www.cowi.com where you can learn more about our projects, our strategy, what we want to achieve and what life is like at COWI.

COWI provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to ethnicity, colour, religion, gender, national origin, age or disability. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.