About the job:
As a Senior Project Engineer – Electrical, you will play a key role within Ethos’ Data Centre Retrofit area, supporting the delivery of complex upgrades across mission-critical data centre environments.
You will lead the design, specification and delivery of electrical systems, ensuring projects are delivered safely, efficiently and to the highest technical standards. Working within live environments, you will help maintain continuity of operations while delivering high-quality engineering solutions.
This role will also involve managing project delivery, mentoring junior engineers and acting as a key technical point of contact for clients and contractors across major European data centre markets.
Your day-to-day activities:
Lead the design and delivery of electrical building services upgrades within live data centre environments, including M&E upgrades, capacity increases, technology refreshes, phased refurbishments, and lifecycle replacements.
Develop and manage retrofit-specific design strategies, including tie-ins to live systems, redundancy planning, outage and staging strategies, and resilience design.
Conduct or oversee technical due diligence of existing data centre facilities, including capacity unlock assessments (power, cooling, and white space).
Prepare and review detailed design drawings, schematics, schedules, technical reports, and tender documentation.
Manage project scope, budget, programme, and contracts — identifying and mitigating scope creep, risks, and live-environment constraints.
Liaise directly with clients (hyperscale, colocation, and enterprise operators), contractors, and vendors to ensure project goals are achieved with zero operational disruption.
Lead electrical system tie-in strategies for live power distribution upgrades, including UPS changeovers, busbar modifications, and generator integration in operational environments.
Proven expertise in electrical building services design for live data centre environments, including LV/MV power distribution, UPS systems, standby generation, busbar upgrades, and life safety systems.
Strong working knowledge of AutoCAD, Revit MEP, Bluebeam, and Microsoft Office; experience with ETAP, Amtech, or DIALux for calculations.
Excellent understanding of IEC, CIBSE, BS, IS, and EN standards applied to retrofit and live-environment projects.
Demonstrable experience working in live, operational data centre environments — including brownfield upgrades, M&E replacements, or phased refurbishments.
Collaborative approach to working across multidisciplinary teams including mechanical, electrical, sustainability, and BIM disciplines.
At Ethos, we’re dedicated to fostering an environment that encourages both technical excellence and personal wellbeing.
We offer:
Flexible Fridays and a 9-day fortnight working schedule — enjoy every second Friday off to maintain work–life balance.
A culture that values flexibility, learning, and teamwork, with clear progression pathways and support toward professional accreditation.
Opportunities to work alongside some of the most experienced engineers in the industry, within a forward-thinking, technology-driven consultancy.
Benefits:
Flexible working times / Hybrid Working
20 days of holidays
Pension Scheme
Coverage for working travel out-of-pocket expenses
Regular training, mentoring, and further college support
Support for Chartership
A professional subscription fee paid by the company
Heavily subsidized social committee activities (5-a-side football, golf society, climbing club, and regular social events)
Company Description:
Ethos is a team of collaborative and creative consultant engineers & professionals, leading data centre and energy infrastructure projects globally.
Our Charter:
We believe in strong human relationships
We believe clear leadership lights the path
We believe sustainability is non-negotiable
We believe a can-do mindset can move mountains
We believe in a relentless focus on delivery
Our Tagline:
Performance Made Possible
