About this role.
Lunar Energy is seeking a senior electrical field supervisor to support maintenance, installations, quality assurance, and new-product rollout for residential clean-energy systems. The role combines hands-on site and lab work with oversight of subcontractor quality, electrical safety, audits, and compliance sign-off. Key technical areas include three-phase electrical systems, solar PV, EV charge points, battery storage, AC/DC wiring, and communication networks such as CAN bus and RS485/Modbus. The successful candidate will help design scalable installation processes while working from London at least weekly and travelling throughout the UK. This is a safety-critical operational role requiring recognized UK electrical qualifications, supervisory experience, and strong practical fault-finding capability.
Role DNA
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Job Complexity
5/5Pace & Pressure
4/5Autonomy Level
5/5Communication Load
4/5Salary analysis
Estimated compensation compared with the broader US market for similar roles.
Core skills
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Sample interview questions
I would first review remote system data, alarms, commissioning records, and site-specific patterns to identify common conditions. I would then prioritize safety and customer impact, validate likely causes through targeted site inspections, and document corrective actions. If a systemic issue emerged, I would work with engineering and suppliers to implement a controlled fix and update installation guidance.
I would establish clear installation standards, RAMS expectations, evidence requirements, and a risk-based audit process. Site inspections would check electrical safety, protection, labelling, testing results, commissioning, and documentation. I would provide actionable feedback, track recurring non-conformances, and use findings to improve training and processes.
I would verify design compliance, isolation and protection arrangements, cable sizing, earthing, inverter configuration, battery charging parameters, and communications. I would complete required inspection and test procedures, confirm G98/G99/G100 requirements where applicable, and validate system monitoring and export behavior. Finally, I would ensure records, handover information, and safety instructions are complete.
I begin by identifying hazards, affected people, controls, emergency actions, required competencies, and permit or isolation needs. I translate this assessment into practical RAMS that field teams can follow, then brief users and verify adoption through observation and audits. I revise the process when incidents, near misses, or operational feedback identify improvements.
I would triage maintenance issues by safety, customer impact, and operational risk while maintaining transparent priorities with stakeholders. For the new product, I would schedule structured installation trials, capture observations and failure modes, and convert learning into repeatable instructions and checklists. This approach protects service quality while ensuring field insight accelerates a scalable product launch.
Lunar Energy was founded to transition homes to 100% clean energy—making our electricity greener, our air cleaner and our energy more safe, secure and reliable for all. We’re a fast-growing, global company building the world’s best clean energy products to electrify all homes and connect communities to form clean, resilient virtual power plants.
We are now seeking an experienced Senior Electrical Supervisor to join our UK Customer Support & Engineering team in our London office. In this role, you’ll carry out on-site work (consisting of maintenance jobs) while ensuring exceptional quality of work by our Subcontractors’.
Further, you will offer electrical installation expertise across the business and specifically to the Engineering team in delivering new products and services. You’ll also play a key role in shaping installation processes for new products, supporting engineering teams, and upholding the highest standards in safety and compliance.
This is a rare opportunity to join a rapidly scaling clean-tech company where you will directly influence field operations, improve processes, and pioneer installation approaches for next-generation energy technologies. If you thrive in dynamic environments, enjoy innovating, and love working with technical products, we’d love to hear from you.
Responsibilities:
- Site visits: Lead on-the-road hardware maintenance and own responsibilities related to the company vehicle.
- Lab & maintenance work: Lead electrical planning and maintenance in the lab, including the rooftop solar setup, working alongside the Test Engineer.
- Safety & quality management: Foster a safety culture, conduct inspections, and ensure all equipment is correctly installed and protected.
- Audits: Develop, document, and roll out a new auditing process across the subcontractor network.
- Accreditations: Will to achieve NICEIC/NAPIT accreditation and sign off all completed work, notifying relevant bodies as necessary.
- Lead new product testing (Installation side): Lead the testing and design of installation processes for all new products with the Engineering Team.
Required experience:
- Significant experience working on electrical installations
- Competence working with:
- 3-phase systems
- Solar PV systems
- EVCP Installations
- AC and DC wiring systems
- Battery storage systems
- Communication systems
Required Skills & Qualifications
- Electrical Installation experience (Min 5 years)
- Previous experience as a Qualified supervisor with an awarding organisation such as NICEIC, NAPIT or Similar (minimum 2 years experience)
- Experience working to Microgeneration Certification Scheme (MCS) standards
- Ability to develop and produce safe systems of work and associated RAMS
- Experience installing, commission and fault finding Electric Vehicle Charge Points (EVCPs)
- Understanding of battery charging profiles and multi-stage charging mechanics
- Hands-on experience in installing some or all of the following products / manufacturers: Victron, Pylontech, BYD, Alfen, Varta, Alpha
- Experience with Sales force or similar CRM
- Ability to interrogate online system data and proactively identify faults within a fleet of connected devices
- An understanding of energy import/export and G98/99/100 requirements
- Experience in the installation, commissioning, and fault-finding of serial communication networks, such as CAN bus and RS485/Modbus
- Strong attention to detail, commitment to safety and quality, and eagerness to grow technical capability
- Ability to think outside the box and to develop solutions to complex problems
- Flexibility in working hours and ability to travel across the UK
Required Skills & Certifications:
Core competency
- JIB Gold Card – NVQ3
- City & Guilds 2365 Level 3 Course (Diploma in Electrical Installation) or equivalent
- Ongoing & Active CPD log
Wiring Regulations
- City & Guilds 2382-26 (Level 3 Award in the Requirements for Electrical Installations (Ideally to latest amendment)
Inspection and testing
- City & Guilds 2391-52 (Level 3 Award in Initial Verification and Periodic Inspection and Testing) or equivalent
Health and Safety
- Institution of Occupational Health and Safety (IOSH) Qualification or similar
- CDM Overview (or equivalent awareness)
- Working at Height
- Manual Handling
- Asbestos awareness
- First Aid Training
Role specific
- Level 3 Award in the Installation and Maintenance of Small-Scale Solar PV Systems
- Level 3 Award in the Design, Installation and Commissioning of Small Electrical Energy Storage System
- Inverter/battery manufacturer specific training
Joining us gives you:-
- Competitive Salary and stock options package
- Private Medical Insurance scheme through BUPA (medical history disregarded);
- A wellbeing and lifestyle benefits plan through Medicash
- Enhanced Pension contributions: employer contributions matching 5%
- A budget for work related training of £1,000 per financial year and an allowance of 4 training days
- Cycle To Work scheme and Workplace Nursery benefit
- Access to Spill – Mental Health Support platform
- Enhanced Maternity + Paternity Pay
- 25 days annual holiday entitlement + 8 Bank Holidays
- Flexible start and finish times, fully remote working or hybrid depending on preferences
Location: You will work from our London office (located close to Spitalfields Market) at least one day a week, and will be expected to travel across the UK as and when needed
We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation or age.
Annual salary information is not provided for this position. Explore salary ranges for similar roles in our Salary Directory ›
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