Diesel Field Service Engineer

WBPS is now Rehlko! About Rehlko

Rehlko is a global leader in power and energy resilience, with a heritage that spans over 100 years. Formerly known as Kohler/SDMO
, Rehlko has continually shaped the way the world powers homes, industries, and critical infrastructure — ever since launching the first modern generator.

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
.

• Carrying out planned and reactive service and maintenance of generators.
• Diagnosing faults and completing breakdown repairs.
• Using a fully equipped company van to travel to customer sites across your region.
• Working closely with our Coordinators to ensure efficient planning.
• Accurately recording all work using our bespoke management system.
• Participating in the regional on-call rota (approx. 1 in
  6).
• Adhering to company H&S, environmental and quality management systems.

• Time-served Mechanical/Electrical Engineer or qualified to NVQ Level 3 (or equivalent).
• Previous generator experience is highly advantageous, though not essential.
• Good knowledge of both mechanical and electrical components (engines/alternators).
• Experience in a mobile engineering role is desirable.
• Able to complete risk assessments and work safely at all times.
• Strong communication skills, confident liaising with customers face-to-face and over the phone.
• Comfortable working in a fast-paced environment.

• Competitive hourly rates (depending on experience).
• Overtime after 40 hours, with a realistic OTE of £55k–£65k.
• 10–15% uplift in base pay, depending on your postcode.
• On-call standby pay.
• 33 days holiday (including bank holidays).
• Company vehicle and fuel card.
• Training and upskilling opportunities.
• Private healthcare.
• Death in service benefit.
• Excellent long-term progression opportunities.
• Access to our outstanding Employee Assistance Programme.