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About the Role

We are seeking an experienced and motivated HV/LV Commissioning Engineer to join our growing Commissioning team. The successful candidate will play a key role in the delivery of commissioning, testing, maintenance, fault diagnosis, modification, and refurbishment activities across HV and LV electrical distribution systems, switchgear, substations, and associated critical power infrastructure up to 33kV. This position offers the opportunity to work on a diverse range of industrial, commercial, utility, renewable energy, critical infrastructure, data centre, defence, and power distribution projects throughout the UK and internationally. The role is ideally suited to an engineer who enjoys hands-on commissioning, technical problem-solving, customer interaction, and working within demanding project environments while maintaining the highest standards of safety, quality, and technical excellence. In addition to conventional HV/LV distribution systems, the role will involve exposure to Automatic Transfer Switches (ATS), Electric Vehicle (EV) charging infrastructure, protection and control systems, and critical power applications.

Responsibilities

Perform commissioning activities on HV and LV switchgear, substations, transformers, protection systems, and associated plant up to 33kV.
Conduct functional testing, secondary injection testing, relay configuration, and protection verification.
Perform installation supervision, commissioning, maintenance, modifications, refurbishment, and fault diagnosis activities.
Support system energisation, integration, and operational handover.
Lead technical investigations and resolve protection, control, and network-related defects.
Support commissioning activities on ATS systems, EV charging infrastructure.
Carry out Factory Acceptance Tests (FAT) and Site Acceptance Tests (SAT) where required.
Assist with customer witness testing and final project acceptance.
Carry out testing and commissioning activities including High Voltage Testing (415V to 33kV), CT Magnetisation Curve Testing, CT Primary Injection Testing, VT Primary Injection Testing, Relay Secondary Injection Testing, Numerical and Electromechanical Relay Configuration, Protection Scheme Verification, Control Circuit Wiring Testing, Point-to-Point Wiring Verification, Mechanical and Electrical Functional Testing, Circuit Breaker Timing and Operation Testing, Protection and Interlocking Testing, Transformer Testing, G59/G99 Protection Scheme Testing, ATS Functional and Failure Simulation Testing, EV Charging System Integration and Protection Testing.
Ensure commissioning readiness through review of drawings, documentation, settings, and test procedures.
Allocate and manage commissioning activities in conjunction with project managers.
Provide technical support and mentoring to junior engineers where required.
Carry out site-specific Risk Assessments.
Assist in producing Method Statements and Safe Systems of Work.
Ensure all commissioning activities are performed in accordance with company and client safety requirements.
Demonstrate strong understanding of electrical safety associated with live HV systems.
Ensure compliance with BS EN, IEC, DNO, National Grid, and client specifications.
Promote a positive safety culture and lead by example on all projects.
Complete commissioning documentation including Test Sheets, Test Reports, Redline Drawings, As-Built Documentation, and Handover Documentation.
Review documentation produced by other engineers and provide technical feedback.
Document test results and produce detailed site reports.
Ensure reports and commissioning records are submitted within agreed timescales.
Verify all test equipment is calibrated, maintained, and fit for purpose.
Maintain strong working relationships with clients and stakeholders.
Deliver customer training and technical support activities.
Assist in preparing quotations and technical proposals for site activities.
Promote company service offerings and identify opportunities for business growth.
Represent the company professionally during site works and customer engagements.

Requirements

Minimum 5 years' experience in HV/LV commissioning, protection testing, and electrical distribution systems.
Experience installing, commissioning, maintaining, and fault-finding on switchgear and substations up to 33kV.
Experience working independently and as part of a multidiscipline engineering team.
Experience working on UK, overseas, and offshore projects.
Strong background in protection and control systems commissioning.
Experience supervising commissioning activities and site teams.
Demonstrable experience in HV & LV Switchgear Commissioning, Protection Relay Testing & Configuration, HV Network Commissioning up to 33kV, Primary and Secondary Injection Testing, CT & VT Testing, Transformer Commissioning, Control & Protection Systems, Circuit Breaker Testing, G59/G99 Schemes, ATS Systems, EV Charging Infrastructure, SCADA Interfaces, Electrical Safety and HV Operational Procedures.
Degree, HNC/HND in Electrical Engineering or equivalent industry experience.
Full UK Driving Licence.
Valid Passport.
Strong understanding of electrical engineering principles and HV safety practices.

Skills

HV/LV Commissioning
Protection Testing
Electrical Distribution Systems
Switchgear
Substations
Fault Diagnosis
Modification
Refurbishment
Automatic Transfer Switches (ATS)
Electric Vehicle (EV) charging infrastructure
Protection and control systems
Critical power applications
Functional testing
Secondary injection testing
Relay configuration
Protection verification
Installation supervision
Maintenance
System energisation
Integration
Operational handover
Technical investigations
Factory Acceptance Tests (FAT)
Site Acceptance Tests (SAT)
Customer witness testing
High Voltage Testing
CT Magnetisation Curve Testing
CT Primary Injection Testing
VT Primary Injection Testing
Relay Secondary Injection Testing
Numerical and Electromechanical Relay Configuration
Protection Scheme Verification
Control Circuit Wiring Testing
Point-to-Point Wiring Verification
Mechanical and Electrical Functional Testing
Circuit Breaker Timing and Operation Testing
Protection and Interlocking Testing
Transformer Testing
Insulation Resistance Testing
Winding Resistance Testing
Ratio Testing
Vector Group Verification
G59/G99 Protection Scheme Testing
ATS Functional and Failure Simulation Testing
EV Charging System Integration and Protection Testing
Commissioning readiness
Drawing review
Documentation review
Settings review
Test procedures review
Project management support
Technical support
Mentoring
Risk Assessment
Method Statements
Safe Systems of Work
Electrical safety
BS EN compliance
IEC compliance
DNO specifications
National Grid specifications
Safety culture promotion
Test Sheets completion
Test Reports completion
Redline Drawings completion
As-Built Documentation completion
Handover Documentation completion
Documentation review
Site reports
Test equipment calibration
Test equipment maintenance
Client relationship management
Stakeholder management
Customer training
Quotation preparation
Technical proposal preparation
Business growth identification
Professional representation
Automatic Transfer Switches (ATS)
Electric Vehicle (EV) charging infrastructure
Data Centres
Renewable Energy Projects
Utility and DNO Networks
Offshore
Nuclear
Defence
Critical Infrastructure sectors
HV & LV Switchgear Commissioning
Protection Relay Testing & Configuration
HV Network Commissioning up to 33kV
Primary and Secondary Injection Testing
CT & VT Testing
Transformer Commissioning
Control & Protection Systems
Circuit Breaker Testing
G59/G99 Schemes
ATS Systems
EV Charging Infrastructure
SCADA Interfaces
Electrical Safety and HV Operational Procedures
Authorised Person (AP)
Senior Authorised Person (SAP)
ECS/CSCS Card
IOSH Qualification
NEBOSH Qualification
DNO Authorisations
National Grid Authorisations
EV Charging Qualifications
HV Switching Authorisations
HV/LV Switchgear
11kV & 33kV Networks
Protection Relays
Omicron Testing
Primary & Secondary Injection
Transformers
ATS
Standby Generation
EV Charging Infrastructure
SCADA
G59/G99 Protection Schemes
Electrical Distribution Systems

Location

Site-Based (UK, Overseas & Offshore)

Work Type

Full-time

Experience Level

Senior
5 years' experience

Education Level

Degree
HNC/HND in Electrical Engineering or equivalent industry experience

Salary/Compensations

GBP 50,400 - GBP 75,600 per year

Benefits

Competitive salary & Bonus Scheme
28 Days Annual Leave + Public Holidays
Pension Scheme
Employee Share Ownership Programme
Various Health & Wellbeing Support Options
Gym Flex
Open Talent Market (internal mobility opportunities + access to mentors & projects globally)
Shopping & Dining Discounts
Learning Portal
Health and life insurance
Paid time off
Parental and care leave
Flexible work options
Confidential counseling
Opportunities to own company shares
Retirement savings plans
Ongoing performance and development conversations
Senior Talent Program
Global career opportunities
Schneider Career Hub for new positions, projects, and mentors
Learning platforms like Coursera
Project opportunities on the Schneider Career Hub
Smart ways to collaborate
Recognition program
Engagement survey
Volunteer leave
Programs through the Schneider Electric Foundation
Initiatives that support youth education

About the Company

Schneider Electric is there when it matters most to you
€40 billion global revenue
+9% organic growth
150 000+ employees in 100+ countries
Schneider Electric aspires to be the most inclusive and caring company in the world, by providing equitable opportunities to everyone, everywhere, and ensuring all employees feel uniquely valued and safe to contribute their best.
We mirror the diversity of the communities in which we operate, and ‘inclusion’ is one of our core values.
We believe our differences make us stronger as a company and as individuals and we are committed to championing inclusivity in everything we do.
At Schneider Electric, we uphold the highest standards of ethics and compliance, and we believe that trust is a foundational value.
Our Trust Charter is our Code of Conduct and demonstrates our commitment to ethics, safety, sustainability, quality and cybersecurity, underpinning every aspect of our business and our willingness to behave and respond respectfully and in good faith to all our stakeholders.

Equal Opportunity

Schneider Electric is an Equal Opportunity Employer.
It is our policy to provide equal employment and advancement opportunities in the areas of recruiting, hiring, training, transferring, and promoting all qualified individuals regardless of race, religion, color, gender, disability, national origin, ancestry, age, military status, sexual orientation, marital status, or any other legally protected characteristic or conduct.
At Schneider Electric, Diversity & Inclusion is at the heart of our organisation, it's an integral part of our history, culture, and identity.
We recognise that embracing diversity unlocks innovation and creativity and fosters collaboration.
We want our employees to reflect the diversity of our communities and the customers we serve.
As a result, our teams are stronger to drive the company's future.
We are proudly participating in the Disability Confident Program offering support to people in the workplace who consider themselves living with a disability.
At Schneider, we believe that every employee is a talent who deserves equal opportunities.
This means you matter.
Every individual needs to feel valued, supported, and treated fairly to do their best work.
Our Total Rewards is our way of saying: “We see you. We value you”.
It’s more than just pay and benefits- it’s a meaningful investment in you.
It is designed for you to perform, grow, feel safe, and elevate your potential to shine as an impact maker.
Looking to make an IMPACT with your career?
When you are thinking about joining a new team, culture matters.
At Schneider Electric, our values and behaviors are the foundation for creating a great culture to support business success.
We believe that our IMPACT values – Inclusion, Mastery, Purpose, Action, Curiosity, Teamwork – starts with us.
IMPACT is also your invitation to join Schneider Electric where you can contribute to turning sustainability ambition into actions, no matter what role you play.
It is a call to connect your career with the ambition of achieving a more resilient, efficient, and sustainable world.
We are looking for IMPACT Makers; exceptional people who turn sustainability ambitions into actions at the intersection of automation, electrification, and digitization.
We celebrate IMPACT Makers and believe everyone has the potential to be one.
Become an IMPACT Maker with Schneider Electric – apply today!