Senior Authorized Person – Commissioning Supervisor

Aventa Group; Vierville-sur-Mer; Remote; EUR 70,000 - 90,000; Full time

Job summary

Confidential, a Northern France offshore wind developer, is seeking a Senior Authorized Person (SAP) / Commissioning Supervisor to support offshore wind farm commissioning. You will safely perform switching operations from 33 kV to 225 kV and coordinate on-site activities with the commissioning team.

Reporting to the Commissioning Manager, you will lead HSE-compliant switching, participate in test programs, manage LOTO, and ensure documentation and handovers to O&M are complete.

Qualifications

• Minimum 3 years' offshore wind and/or electrical commissioning.
• Experience in 225 kV switching and LOTO in PW systems.
• Valid GWO certifications: 5 standard modules (BST/BOSIET, FAW, MH, FA, WAH), plus EFA and ART.
• Fluent English; French beneficial.

Responsibilities

• Execute safe switching operations and document outcomes.
• Coordinate energisation sequences and ensure proper isolation records.
• Lead toolbox talks and ensure HSE compliance on site.
• Prepare handovers to O&M with complete documentation.

Skills

Offshore wind experience

HV switching

LOTO procedures

Permit to Work

HSE compliance

English fluent

Documentation

Team coordination

Education

Technical degree in electrical engineering

Tools

SCADA systems

Electrical protection testing

Job description

Home | Jobs offer | Senior Authorized Person – Commissioning Supervisor

Published on June 22, 2026

Project Snapshot

Summary

Location: Normandy coast, France

Contract type: Contract

Rotation: To be confirmed with the team

Compensation: Competitive

Right to work / visa: Right to work in the EU required; French work permit if applicable

Equipment: Computer and offshore-specific PPE provided by client; personal PPE provided by consultant

Project reference: Offshore wind farm commissioning - Normandy coast, English Channel

Client: Confidential - Offshore wind developer, Northern France

We are looking for 5 Senior Authorized Person / Commissioning supervisor

Description

Role overview

The Senior Authorized Person (SAP) / Commissioning Supervisor supports the offshore wind farm commissioning team in executing safe switching operations and commissioning activities across the full electrical system, from 33kV inter-array cables to 225kV equipment. The role combines rigorous electrical safety accountability with active site coordination, documentation, and HSE compliance.

Reporting line: Reports to the Commissioning Manager; interfaces with the Control Engineer, HSE team, O&M team, and subcontractors on site.

Key responsibilities

Electrical Safety and Switching Operations

• Ensure switching activities are safely executed and fully documented in compliance with project procedures and electrical safety rules
• Prepare, review, and follow switching schedules; manage the LOTO process for isolations and de-isolations
• Energise and de-energise electrical equipment up to 225kV, including WTG switchgear and inter-array cables, within the Permit to Work system
• Coordinate de/energisation sequences with the Control Engineer and verify all isolations are correctly documented before execution

Commissioning Execution and Quality

• Follow the inter-array cable test programme and ensure electrical equipment up to 33kV is prepared for safe test execution
• Participate in commissioning tests to verify compliance with project specifications and record all switching activities
• Perform site walk-downs and condition checks on offshore substation, foundations, inter-array cables, and wind turbine equipment
• Identify and report outstanding works and quality issues; elevate technical arbitration or solution validation when required

HSE, Reporting and Site Coordination

• Ensure all work is conducted in accordance with project HSE rules, local legislation, and Employer requirements
• Attend and lead toolbox talks and asset inductions; contribute to and enforce Electrical Safety Rules on site
• Report HSE issues promptly and maintain required safety standards throughout all commissioning activities
• Take part in daily site meetings and submit end-of-shift handover reports; contribute to proactive communication between all parties

Documentation and O&M Handover

• Review, prepare, and align HSE, commissioning, and maintenance documentation to project templates
• Perform and record pre-energisation and post-energisation inspections; perform cargo operations as required
• Act as Employer on-site representative when required
• Prepare and facilitate a structured handover between the commissioning team and O&M teams
• Switching schedules prepared, reviewed, and executed safely in compliance with project electrical safety rules
• LOTO processes implemented and all isolations verified and documented correctly before energisation
• Commissioning tests conducted and compliance with project specifications confirmed and recorded
• Site walk-down reports completed and outstanding quality issues raised in daily progress reporting
• End-of-shift handover reports submitted and commissioning-to-O&M handover prepared and facilitated

Required Qualification

Requirements

Education

• Technical degree, BTS, or vocational qualification in electrical engineering - or equivalent practical background

Experience

Must-have:

• Minimum 3 years' experience in offshore wind and/or electrical commissioning
• Proven hands-on experience in switching operations on electrical equipment up to 225kV, including WTG switchgear
• Experience in LOTO procedures and working within a Permit to Work system in an offshore environment
• Valid GWO certifications: 5 standard modules (BST/BOSIET, FAW, MH, FA, WAH), plus EFA and ART
• Valid offshore medical certificate

Nice-to-have:

• Experience on offshore substation (OSS) commissioning or inter-array cable HV testing
• Familiarity with SCADA systems and/or electrical protection commissioning/testing
• Previous experience on a Service Operations Vessel (SOV)

Technical skills

• Switching operations and LOTO management on MV/HV equipment up to 225kV
• Commissioning documentation, Permit to Work systems, and progress reporting
• SCADA and/or electrical protection commissioning/testing (desirable)
• Rigorous and methodical; strong attention to safety-critical procedures
• Team player; works effectively in multicultural offshore environments
• Clear communicator; able to escalation issues efficiently and coordinate across multiple parties
• Fluent English required; French highly desirable