Diesel Field Service Engineer

Why Work at Rehlko

Our work is guided by our purpose: creating an energy-resilient world for a better future. This purpose embodies the legacy we bring, with more than 100 years as the global leader in energy resilience, delivering solutions critical to sustain and improve life.

Our teams have the opportunity to provide a critical resource – energy – that ensures safety, security, and independence for people around the world. Our team members are focused on pushing boundaries, continuing to innovate in an ever-changing landscape, and keeping up with the pace required to create solutions for today’s world demands.

Our product range includes engines, generators, power conversion, UPS systems, EV components and electrification solutions, microgrid controls and management, and clean energy solutions that serve a broad spectrum of OEM, residential, industrial, and commercial customers. At Rehlko, you have the freedom to identify, create, and deliver solutions – large and small – that help people and communities thrive in the moments that matter.

At Rehlko, our team members are the essential energy that powers our organization’s success. We are committed to fostering a safe and sustainable work environment where safety is everyone’s responsibility. We empower every team member to actively participate in our Zero Is Possible safety culture by encouraging open communication, proactively reporting hazards, following protocols, and suggesting improvements. Join us in creating an energy resilient world for a better future!

What We Offer

At Rehlko, our Total Rewards programs are designed to accelerate growth, energize performance, and support a culture of inclusion at every stage of life and work. We offer total rewards that are easily understood, recognize results, enable career mobility, and reflect our commitment to valuing diverse needs in a fast-moving world. We provide:

• Competitive compensation and benefits

• Work-life flexibility

• Recognition and rewards

• Development and career opportunities

• A safe and inclusive workplace

Why You Will Love this Job

We're looking for a Generator Service Engineer to support critical power infrastructure within data centre environments. Working predominantly from fixed customer sites, you'll play a key role in maintaining standby power systems, ensuring equipment reliability and maximum uptime across mission-critical facilities.

The Role

• Carrying out planned preventative maintenance and reactive repairs on standby power generation equipment within data centre environments.

• Diagnosing faults and completing breakdown repairs to ensure maximum equipment reliability and uptime.

• Working on fixed customer sites, supporting critical power infrastructure and emergency backup systems.

• Building strong working relationships with site teams and customers, delivering a professional and responsive service.

• Working closely with Coordinators and Service Managers to ensure maintenance schedules and reactive works are completed efficiently.

• Accurately recording all work carried out using our bespoke management system.

• Participating in the site or regional on-call rota (approximately 1 in 6).

• Adhering to company Health & Safety, environmental and quality management systems at all times.

The Person

• Time-served Mechanical/Electrical Engineer or qualified to NVQ Level 3 (or equivalent).

• Previous experience working on generators, critical power systems or similar equipment is highly advantageous.

• Good knowledge of both mechanical and electrical systems, including engines and alternators.

• Experience working within data centres, critical environments, facilities management or industrial settings would be beneficial.

• Strong fault-finding and diagnostic skills.

• Able to complete risk assessments and work safely in high-compliance environments.

• Excellent communication skills, confident liaising with customers, site teams and internal stakeholders.

• Comfortable working in a fast-paced environment where reliability and attention to detail are critical.

What We Can Offer You

• Competitive hourly rates, dependent on experience.

• Overtime available after 40 hours, with a realistic OTE of £55,000 - £65,000.

• 10-15% uplift in base pay, depending on your postcode.

• On-call standby allowance.

• 33 days' holiday, including bank holidays.

• Training and upskilling opportunities.

• Private healthcare.

• Death in service benefit.

• Excellent long-term career progression opportunities.

• Access to our Employee Assistance Programme.

About Us

Rehlko proudly offers a rich history steeped in creativity and commitment to our associates and communities, along with competitive benefits and compensation. Our Purpose—Creating an energy resilient world for a better future—and Values: Curiosity, Trust, Pace, and Excellence, are important cultural components that shape the way we work and relate to one another. Learn more about Rehlko at https://www.rehlko.com/who-we-are. In addition to the investment in your development, Rehlko offers a comprehensive package with competitive salaries and a range of additional benefits.

Rehlko is an equal opportunity employer that prohibits discrimination and will make decisions regarding employment opportunities, including, but not limited to, hiring, job assignment, compensation, promotion, benefits, training, discipline, and termination, promote equal opportunities in every aspect of our process.

Our Values

Curiosity – Seek, learn, share
Trust – Go farther together
Pace – Focus to go faster
Excellence – Find the win every day