Plant Reliability Engineer

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

Benefits offered by this job

Welcome Bonus

Career growth / Mars University

Private healthcare

Parental leave

Pension

Life insurance

Gym membership

Annual leave 24–32 days

On-site perks

Job summary

Mars Petcare in Castle Cary is seeking a proactive Multi-Skilled Engineer to join our site-based team. You will deliver both planned maintenance and rapid breakdown responses to keep production lines reliable and safe.

You will collaborate with operations, drive continuous improvement, and uphold safety and quality standards. An approved engineering apprenticeship or NVQ Level 3 in mechanical or electrical engineering is preferred.

Qualifications

• Qualified Engineer: Approved apprenticeship, NVQ Level 3, ONC, or equivalent in Mechanical or Electrical Engineering.

Responsibilities

• Planned & Reactive Maintenance: execute scheduled preventative maintenance and rapid fault diagnosis and repairs to minimise downtime.
• Safety & Compliance Leadership: uphold Health, Safety and Quality standards and Mars policies.
• Continuous Improvement: identify opportunities to optimise machine performance and equipment layouts.
• Collaboration & Documentation: maintain maintenance logs and handovers for weekday teams.

Skills

Electrical maintenance

Mechanical maintenance

Fault finding

Diagnostics

Safety & HSE guidelines

Communication & collaboration

Own transport

Education

Approved apprenticeship / NVQ Level 3 / ONC in Mechanical or Electrical Engineering

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