Senior Electrical Design Engineer - HV Substations & Renewables

Ayesa is on a mission to engineer a better future—one powered by sustainable energy systems and world-class infrastructure. We are seeking an ambitious Senior Electrical Design Engineer to lead HV substation and transmission line design, supporting the delivery of renewables, grid connections, BESS, and private network projects.

Location: London, UK (Hybrid) | Team: Power Transmission & Distribution | Work Type: Full-Time | Senior Level

You’re joining our fast-growing Transmission & Distribution team in the UK, collaborating with a global network of technical experts and delivering critical infrastructure for a carbon-neutral future. We are looking for Engineers dedicated to detailed design work, 3D modelling, client interface, and project delivery.

Position: Senior Electrical Design Engineer – Lead HV substation and transmission line design, supporting renewables, grid connections, BESS, and private network projects.

About The Role:

• Lead Cutting-Edge Design Projects: Develop primary layouts and electrical designs for HV substations (110 kV to 400 kV). Design and specify HV equipment, including AIS/GIS switchgear, transformers, and auxiliary systems. Provide design input across the full project lifecycle – from feasibility through FEED and detailed design to commissioning.
• Collaborate Across Disciplines: Work closely with internal teams in civil, geotechnical, protection & control, and environmental disciplines. Deliver integrated designs that support smart grid, HVDC, renewable energy, and waste-to-energy projects.
• Engage with Global Clients: Support utility and private sector clients in the UK and across Europe. Prepare high-quality technical documentation and reports. Ensure designs meet UK regulations and client H&S standards.

This role is UK-based, with flexibility to work remotely and support international teams across Europe.

Key Responsibilities:

• Develop primary plant layouts for HV substations, ensuring innovative and efficient designs.
• Specify HV equipment and ancillary systems for energy storage and renewable generation projects.
• Provide engineering expertise through all project lifecycle stages: feasibility studies, FEED, detailed design, and site construction monitoring.
• Coordinate with multidisciplinary teams, including civil, structural, environmental, geotechnical, and protection & control disciplines.
• Deliver projects utilizing new technologies such as energy storage, HVDC systems, smart grids, and waste-to-energy solutions.
• Provide professional engineering services to clients in the UK and internationally.

Requirements:

What We’re Looking For:

• Required: Degree in Electrical Engineering (Chartered or working toward Chartered status preferred). Minimum 5 years’ experience with HV substations, power transmission and renewables. Extensive HV substation design experience (110 kV to 400 kV). Proven ability to produce technical specifications and equipment layouts. Strong knowledge of UK T&D regulations and H&S compliance. Excellent written communication skills in English.
• Desirable: Experience in HV cable systems and overhead line design. Familiarity with ETAP, PLS-CADD, DIgSILENT, or CDEGS. Experience with BIM workflows in T&D projects. Site experience: testing, commissioning, or construction. Master’s degree in a relevant discipline.

Other Information:

What’s in It for You: Competitive Salary. Hybrid Work Model (2–3 days from home). Flexible Hours 37.5 per week (Core: 10am–4pm Mon–Thu, 10am–3pm Fri). Pension Matching & Financial Planning Support. Income Protection & Life Assurance. Professional Development and Chartership Support. Employee Assistance Programme (EAP). Sustainability & Innovation-Focused Culture. Socials, Recognition Awards & Wellbeing Initiatives. Generous Annual Leave with Additional Days Based on Service.

We’re Inclusive by Design: Ayesa is proud to be an equal-opportunity employer. We value and celebrate diversity in all its forms, including but not limited to age, disability, gender identity, race, religion or belief, sex, sexual orientation, and socio-economic background or neurodiversity. We believe that a diverse workforce fosters innovation and stronger outcomes. We are committed to inclusive hiring practices, providing reasonable adjustments for applicants and employees with disabilities, and ensuring equal access to opportunities for learning, development, and progression across our organisation.