Principal Electrical Building Services Engineer

Mott Mac Donald is a global engineering, management, and development consultancy with over 20,000 employees across more than 50 countries and 140+ offices. We work across incredible global industries, delivering exciting work that is defining our future and making an important societal impact in the communities we serve. Our people power our performance – we succeed when they do. With countless opportunities to collaborate, learn, and grow, the possibilities for excellence are as varied as every individual.

Whether you want to grow as a subject matter expert or broaden your experience with roles across our international community, you’re surrounded by global specialists who want to combine their expertise and champion you to be your best. As a proudly employee‑owned business, we benefit our clients, our communities, and each other, investing in creating the right space for everyone to feel empowered, included, and valued.

Whatever your ambition, Mott Mac Donald is where people come to be brilliant.

The Energy unit delivers services to clients globally across several sectors including hydropower, nuclear, waste, renewable generation and transmission & distribution networks. Together we provide integrated engineering and project management services across the project lifecycle – from concept and design to construction and operations, to decommissioning or repowering and life extension. Together with our clients, we’re helping to deliver the energy transition globally.

Join our Energy Unit’s National:
Defence and Civil division as a Senior Electrical Building Services Engineer and get the opportunity to work on exciting projects within a highly regulated / secure sector. You’ll play a key role in managing and delivering electrical building services design solutions for single or multi‑discipline small and large scale projects, new and refurbishment projects or be part of an integrated project team, while contributing to technical excellence and collaborating with a successful team across the UK and Europe.

In this role, you will be an integral part of our wider engineering teams, working alongside various Clients and specialist suppliers to deliver innovative, technically excellent solutions.

You will be responsible for the management and delivery of electrical building services design solutions, commensurate to the design phase through sound engineering knowledge.

You will be able to work independently, be highly motivated, have demonstrable engineering experience and be confident in your own ability to deliver the electrical building services design scope for our projects.

• Incoming Supply Arrangements
• Standby Power Generation Systems
• UPS Systems
• LV Distribution Systems
• Earthing Arrangements
• Metering Arrangements
• Small Power
• General/Emergency/External Lighting
• Fire Safety
• Security Systems
• Lightning Protection Systems
• Cable Management Solutions

All our designs undergo the highest level of validation and verification before installation occurs and health & safety management is crucial to meet our Clients requirements.

• Conceptual Designs.
• New‑Build Facilities.
• Refurbishment of existing buildings.
• Asset care/renewal to extend the operational life of legacy buildings.
• Design solutions to support decommissioning activities.

• Be working within multi‑disciplinary design teams delivering the electrical building services design solutions.
• Produce and review design documents including basis of designs, technical specifications, procurement specifications, condition assessment reports and survey reports covering all aspects of electrical building services design.
• Produce and review project layout drawings, block cable diagrams and single line schematic diagrams to present the electrical building services design solutions.
• Produce and review project engineering calculations to underpin and substantiate the electrical building services design solutions.
• Support production of estimates of work elements including programme/schedule development and man‑hour costs to help guide bids and proposals.
• Management and monitoring of the design phase…