Plant Reliability Engineer

Mars - RSR; Croscombe; On-site; GBP 45,000 - 51,000; Full time

Benefits offered by this job

Welcome bonus

Private healthcare

Parental leave (equal)

Pension plan (generous)

Life assurance

Gym membership

Annual leave 24–32 days

On-site perks

Job summary

Mars Petcare at Castle Cary is seeking a proactive Multi-Skilled Engineer to ensure maximum plant reliability, efficiency and safety across production and packaging lines.

You will perform planned maintenance and rapid breakdown response, collaborating with operations to drive continuous improvement while upholding world-class safety and quality standards. Benefits include a welcoming bonus and strong development opportunities.

Qualifications

• Qualified Engineer: approved apprenticeship/NVQ Level 3/ONC or equivalent in Mechanical or Electrical Engineering.
• Multi-Skilled: hands-on electrical and mechanical maintenance, fault-finding, diagnostics.
• HSE: strong understanding of health, safety and environment guidelines including permit-to-work.
• Excellent communication and collaboration with operations and shift teams.

Responsibilities

• Execute planned preventative maintenance (PPMs) and rapid breakdown repairs to minimise downtime.
• Lead safety and compliance with Mars policies and UK legislation.
• Identify opportunities for continuous improvement in machinery and layouts.
• Maintain accurate maintenance logs and ensure clear handovers between shifts.

Skills

Multi-Skilled Engineer

Maintenance

Fault finding

HSE

Communication

Team collaboration

Education

Approved apprenticeship/ NVQ Level 3 / ONC or equivalent (Mechanical or Electrical)

Tools

CMMS

Job description

Job Description

Job Description:

Castle Cary
£45,000– £50,600 (including shift allowance, DOE)
+ £2,500 Welcome Bonus, Performance Bonus & Exceptional Benefits

32 Hrs a week – Shift Pattern:

• Saturday & Sunday alternating weekly between (nights) 10pm-10am & (days) 10am-10pm
• Weekday-1x shift - Mon-Fri 8am-4pm/6am-2pm

Why Join Us?

We care about the world and your future. Mars offers competitive compensation and benefits along with some great perks, like fun freebies and best-in-class development. As a Mars Associate, you have our ongoing commitment to your growth and development as you work across our world-famous brands. The world we want tomorrow starts with how we do business today, and we're here to support you every step of the way.

The Role

We are seeking a proactive and highly capable Multi-Skilled Engineer to join our technical team at the Mars Petcare manufacturing facility in Castle Cary. In this critical site-based role, you will be responsible for ensuring maximum plant reliability, efficiency, and safety across our production and packaging lines.

You will deliver both planned preventative maintenance (PPM) and rapid breakdown response. As a key member of our engineering community, you will collaborate closely with operations to drive continuous improvement, minimize downtime, and uphold the world-class safety and quality standards that define Mars Petcare.

What’s in it for you?

• Welcome Bonus paid in your first week’s salary
• Career growth opportunities with structured development & Mars University
• Private healthcare + equal parental leave
• Generous pension (up to 9% contribution)
• Life assurance (4x salary)
• Gym membership & wellbeing support
• Annual leave starting at 24 days, rising to 32 with service
• Free perks on site: parking, Lavazza coffee, tea, fruit twice a week, and access to our employee shop

What We’re Looking For

• Qualified Engineer: Approved apprenticeship, NVQ Level 3, ONC, or equivalent qualification in Mechanical or Electrical Engineering.
• Multi-Skilled Competency: Proven hands‑on experience executing both electrical and mechanical maintenance, fault‑finding, and diagnostics in a fast‑paced manufacturing or production environment.
• Safety First Mindset: Strong understanding of Health, Safety, and Environment (HSE) guidelines, including Permit to Work systems, LOTO (Lock Out Tag Out), and risk assessments.
• Communication & Collaboration: Excellent interpersonal and teamwork skills, with the ability to communicate technical handovers and machinery statuses clearly to operational peers.
• Own transport is essential due to the site location

Key Responsibilities

• Planned & Reactive Maintenance: Execute scheduled preventative maintenance routines (PPMs) and provide high-quality, rapid-response fault diagnosis and repairs to minimize production downtime.
• Safety & Compliance Leadership: Actively support and drive the highest Health, Safety, and Quality standards across the site, ensuring all engineering activities comply with Mars policies and UK legislative requirements.
• Continuous Improvement: Identify opportunities to optimize machine performance, modify equipment layouts, and implement sustainable technical solutions that enhance plant reliability and decrease waste.
• Collaboration & Detailed Documentation: Maintain accurate maintenance logs, update CMMS data, and deliver clear, structured shift handovers to ensure seamless continuity for weekday engineering teams.

What You Can Expect from Mars

• Work alongside 130,000+ Associates worldwide guided by our Five Principles
• Be part of a purpose-driven company shaping “the world we want tomorrow”
• Access world‑class training & development from day one
• Join a company with an industry-leading salary and benefits package