Mission freelance Electrical Engineer

Location: UK (Hybrid) | Sector: Transmission & Distribution | Start: ASAP

We're looking for an experienced Lead Electrical HV Design Engineer to join long‑term UK Transmission & Distribution projects (132kV-400kV). You'll lead substation design (AIS/GIS), oversee deliverables, and ensure compliance with National Grid or SSE standards.

Key Requirements:

• Proven UK T&D experience (National Grid / SSE essential)
• HV design leadership: SLDs, layouts, earthing, cable sizing
• Knowledge of UK standards (ESQCR, ENA, BS/IEC)
• Familiarity with tools like AutoCAD, CDEGS, DIgSILENT

Contract Details:

• Outside IR35 | Rolling contract | Competitive day rate
• Hybrid working with occasional site visits

Due to the nature of this role, we cannot consider applicants who would require sponsorship.

Please click to find out more about our Key Information Documents. Please note that the documents provided contain generic information. If we are successful in finding you an assignment, you will receive a Key Information Document which will be specific to the vendor set-up you have chosen and your placement.

To find out more about Progressive please visit

Progressive Recruitment, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC387148 England and Wales