Senior Power Systems Engineer

About Ethos

Ethos is a collaborative team of engineers, consultants, and creative thinkers designing and delivering data centre and energy infrastructure across the world's most dynamic markets. As a multidisciplinary consultancy, we combine technical expertise, creativity, and integrated delivery to lead complex, mission-critical projects.

About the Job

Ethos is seeking a Senior Power Systems Engineer to join our expanding Data Centre Group, supporting the design and delivery of resilient electrical infrastructure for some of the world's most advanced mission-critical facilities.

Working within multidisciplinary engineering teams, you will provide specialist expertise in power system modelling, analysis and electrical network design, ensuring the highest levels of reliability, resilience and operational performance across large-scale data centre developments.

We are looking for Power Systems Engineers who want to advance their technical expertise and delivering innovative solutions to complex engineering challenges for clients worldwide. This opportunity is ideally suited to adaptable, and technically ambitious engineer seeking to develop into a recognised industry expert and trusted consulting specialist within a forward-thinking, dynamic, and innovative electrical engineering consultancy.

Responsibilities:

• Develop detailed ETAP models for complex electrical distribution networks.

• Support the design of resilient MV and LV distribution systems for mission-critical facilities.

• Produce detailed engineering calculations and technical reports.

• Review protection settings and coordinate relay philosophies.

• Review vendor ETAP models and manufacturer data for technical compliance.

• Validate electrical equipment ratings against calculated system duties.

• Contribute to QA processes by reviewing technical calculations, reports and design deliverables.

• Identify opportunities to improve design efficiency through standardisation and digital engineering tools.

• Support the development of internal ETAP standards, templates and modelling procedures.

• Liaise with clients, utilities, contractors and equipment manufacturers to resolve technical issues throughout project delivery.

• Mentor, coach, and support the professional development of junior engineers, delivering online training sessions where appropriate.

• Participate client meetings, manage client expectations, and maintain professional relationships through clear communication and timely responsiveness.

• Prepare comprehensive technical and non-technical reports, ensuring accuracy, clarity, and effective communication of key findings and recommendations.

• Provide technical, strategic input, and leadership across a diverse range of complex engineering projects.

• Monitor, evaluate, and report on project performance and client satisfaction, identifying opportunities for continuous improvement and ensuring alignment with project objectives.

Perform electrical power system studies including:

• Load flow analysis

• Short circuit studies

• Protection coordination

• Arc flash studies

• Harmonic analysis

• Desirable: Knowledge and experience in grid connection and embedded generation assessments, including static and dynamic stability analysis, transient stability studies, harmonic assessments, voltage flicker analysis, and transformer inrush current studies.

• Ability to perform cable sizing calculations in accordance with relevant international standards, including IEC 60502-2 and IEC 60364-5-52.

Desirable Experience

• Experience with Power System Study software (SKM, DIgSILENT PowerFactory, ETAP, or similar).

• Understanding of grid code requirements and utility connection processes (This would be an advantage but is not essential).

• Experience performing electrical calculations and developing designs in accordance with relevant IEC standards.

• Experience with Power quality and harmonic analysis would be favourable.

• Experience in protection system design, settings development and coordination studies, with exposure to transformer and bus differential protection, REF and directional protection schemes.

• Proven application of protection coordination studies.

About You

• Degree in Electrical Engineering, Power Engineering or a related discipline.

• 3+ years' experience in electrical or power systems engineering within a building services consultancy, engineering consultancy or industrial environment.

• Experience delivering projects within data centres, pharmaceutical, semiconductor, healthcare, industrial or other mission-critical facilities is highly desirable.

• Good understanding of European and UK electrical standards including IEC, BS, IS and EN standards.

• Strong knowledge of electrical distribution systems from HV through MV and LV.

Power Systems & ETAP Experience

Experience using ETAP (or equivalent software such as DIgSILENT PowerFactory or SKM) for:

• Development of complete electrical network models.

• Load flow analysis.

• Short circuit studies.

• Protection coordination and selectivity studies.

• Time-current coordination (TCC) development.

• Arc flash hazard analysis.

• Harmonic analysis.

• Power quality assessments.

• Desirable: Transient and dynamic system studies.

• Equipment duty verification.

• Cable ampacity and derating studies.

Experience creating and maintaining ETAP digital models throughout the project lifecycle, ensuring alignment with design revisions and as-built information, would be highly advantageous.

• HV, MV and LV distribution systems.

• Primary and secondary substations.

• Transformers.

• Switchgear.

• Busbar systems.

• Standby generators.

• UPS systems (static and rotary).

• Battery Energy Storage Systems (BESS) (desirable).

• DC power systems.

• Emergency power systems.

• Earthing and bonding systems.

• Lightning protection systems.

• Generator synchronisation and load sharing.

• Automatic Transfer Switches (ATS).

• Static Transfer Switches (STS).