Senior Electrical Engineer – Substations, Sofia

About the role

Mott MacDonald is seeking experienced Electrical Engineers at various levels to join its Power Transmission and Distribution team in Sofia. You will work on high‑voltage substation projects, supporting the design, delivery and commissioning of innovative grid solutions.

Key responsibilities

• Develop primary plant layouts and equipment specifications for HV substations (110 kV‑400 kV).
• Provide engineering input across project lifecycles, from feasibility to detailed design, construction monitoring and commissioning.
• Coordinate with multidisciplinary teams including civil, structural, protection, control and BIM specialists.
• Deliver projects involving new technologies such as energy storage, HVDC, smart‑grid and waste‑to‑energy systems.

Required profile

• Degree‑level qualification, ideally working towards Chartered Engineer status.
• Proven experience in power transmission and distribution, specifically HV substation design and delivery.
• Familiarity with regulatory and client‑specific health‑and‑safety requirements for HV plant.
• Ability to prepare technical reports in English.

Required skills

• Design of HV AIS/GIS substations and associated primary/secondary equipment.
• Specification development for 110 kV‑400 kV equipment.
• Use of earthing software (CDEGs) and protection/co‑ordination tools (ETAP).
• Knowledge of overhead line and HV cable system design (minimum 110 kV) is a plus.

What we offer

• 25 days annual leave plus life insurance.
• Annual professional institution subscription and performance‑based bonus scheme.
• Continuous development opportunities and wellbeing support.
• Flexible working arrangements and an inclusive, diverse workplace.