Generator Field Engineer

WB Power Services Ltd; Little Hulton; On-site; GBP 55,000 - 65,000; Full time

Benefits offered by this job

Company vehicle and fuel card

Private healthcare

Death in Service

33 days holiday

Career progression

Job summary

Rehlko, formerly WB Power Services, is seeking a Hire Field Service Engineer to visit customer sites, install, service and fault-find on hire generators and temporary power equipment. You’ll work independently, manage workload, and contribute to safe, compliant operation while on-call for emergencies.

You’ll have NVQ Level 3 in Mechanical/Electrical, strong fault-finding skills, and a full UK driving licence; a company vehicle and overtime opportunities are provided.

Qualifications

• NVQ Level 3 in Mechanical, Electrical, Plant, Automotive, HGV or Agricultural Engineering.
• Experience working on generators and plant machinery.
• Full UK driving licence.
• Strong fault-finding and diagnostic skills.

Responsibilities

• Install, commission and decommission hire generators and temporary power equipment.
• Carry out planned servicing and maintenance of rental generators.
• Diagnose and repair mechanical and electrical faults on-site and in the field.
• Support temporary power projects including cabling and fuel systems.
• Perform load bank and mains failure tests and operational checks.
• Complete pre-hire and post-hire inspections to ensure fleet reliability.
• Produce accurate service reports and documentation for each job.
• Collaborate with Hire Desk, Operations and Service teams to deliver excellent customer service.

Skills

Fault finding

Field service

Customer focus

Driving licence

Education

NVQ Level 3 Mechanical/Electrical

Job description

About Rehlko

Rehlko is a global leader in power and energy resilience. Formerly known as Kohler Energy, Rehlko has continually shaped the way the world powers homes, industries, and critical infrastructure.

As part of this exciting growth, WB Power Services has now become Rehlko. This transition marks our evolution into an OEM, allowing us to design, build, and deliver complete power solutions from the ground up. It’s a transformation that strengthens our technical capability, expands our product range, and deepens the value we offer to our clients.

We retain the strong, values-led foundation of a family business, while being empowered by the scale, resources, and global vision of Rehlko. For our people, this means new opportunities, bigger projects, and a chance to shape the future of resilient, sustainable energy.

The Role

As a Hire Field Service Engineer, you'll spend most of your time on customer sites, ensuring our hire fleet is installed, maintained, and operating safely and efficiently. You'll support everything from routine servicing and fault finding to temporary power installations and emergency breakdown response.

Key Responsibilities

• Installation, commissioning and decommissioning of hire generators and temporary power equipment.
• Planned servicing and maintenance of rental generators and associated equipment.
• Diagnosing and repairing mechanical and electrical faults both on-site and in the field.
• Supporting temporary power infrastructure projects, including cabling, fuel systems and distribution equipment.
• Carrying out load bank testing, mains failure testing and operational checks.
• Completing pre-hire and post-hire inspections to maintain fleet reliability.
• Producing accurate service reports and job documentation.
• Working closely with Hire Desk, Operations and Service teams to deliver excellent customer service.
• Participating in an on-call rota and responding to emergency call-outs when required.

The Person

We're looking for a practical, customer-focused engineer who enjoys working independently and solving problems in the field.

Skills & Experience

• NVQ Level 3 qualified (or equivalent) in Mechanical, Electrical, Plant, Automotive, HGV or Agricultural Engineering.
• Previous experience working on generators, plant machinery, powered access, HGVs, construction equipment or similar.
• Strong mechanical and electrical fault-finding skills.
• Understanding of diesel engines, alternators and control systems.
• Comfortable working at customer sites and managing your own workload.
• Flexible regarding overtime, on-call commitments and occasional overnight stays.
• Full UK driving licence.

Generator experience is desirable but not essential, as full product training will be provided.

What We Can Offer You

• Competitive hourly rate depending on experience.
• Overtime paid after 40 hours with realistic OTE of £55,000-£65,000.
• On‑call standby allowance.
• Company vehicle and fuel card.
• 33 days holiday including bank holidays.
• Industry‑leading training and ongoing development.
• Private healthcare.
• Death in Service benefit.
• Employee Assistance Programme.
• Excellent long‑term career progression opportunities