Mechanical Maintenance Engineer

OCS; Aldermaston; On-site; GBP 36,000 - 48,000; Full time

Benefits offered by this job

Award-winning employer

Digital learning

Retail discounts

Professional growth

Flexible pay

Job summary

OCS UK & Ireland seeks a skilled maintenance engineer to perform planned and reactive maintenance on mechanical plant and systems at our site. You will review instructions, risk assessments, and safe systems of work, ensuring tools and spares are ready for timely repairs.

Working hours are Monday to Friday, 07:45–16:30. You will diagnose faults, recommission equipment after maintenance, report safety concerns, and collaborate with supervisors and contractors to minimise disruption while

Responsibilities

• Complete planned preventive maintenance, reactive maintenance, inspections, fault finding and repairs on mechanical plant, systems and equipment within authorised competence.
• Review work instructions, maintenance schedules, drawings, risk assessments and safe systems of work before starting each task, seeking clarification where required.
• Ensure the correct tools, calibrated test equipment, materials and spares are available and suitable for the work, reporting shortages or defects to the Mechanical Supervisor or Section Leader.
• Comply with site rules, permit requirements, isolations, lock-off procedures and all applicable health, safety, environmental, security and quality arrangements.
• Carry out work in the planned sequence and within agreed timescales, keeping the supervisor informed of progress, access restrictions, emerging defects and any risk to delivery.
• Diagnose mechanical faults using approved methods and undertake repairs or component replacement only where trained, competent and authorised.
• Test and recommission equipment following maintenance, confirming safe operation and escalating any unresolved issue before returning plant or systems to service.
• Support the continuity and reliability of essential site systems by responding appropriately to breakdowns, defects and operational priorities.
• Complete work orders, inspection sheets, test results, asset records and other maintenance documentation accurately and promptly.
• Work collaboratively with supervisors, planners, other trades, facility representatives and approved contractors to coordinate activities and minimise disruption.
• Identify and report unsafe conditions, asset deterioration, recurring faults and opportunities to improve safety, reliability, maintainability or service delivery.

Job description

About The Role

Working Hours: Monday - Friday, 07:45 - 16:30

• Complete planned preventive maintenance, reactive maintenance, inspections, fault finding and repairs on mechanical plant, systems and equipment within authorised competence.
• Review work instructions, maintenance schedules, drawings, risk assessments and safe systems of work before starting each task, seeking clarification where required.
• Ensure the correct tools, calibrated test equipment, materials and spares are available and suitable for the work, reporting shortages or defects to the Mechanical Supervisor or Section Leader.
• Comply with site rules, permit requirements, isolations, lock-off procedures and all applicable health, safety, environmental, security and quality arrangements.
• Carry out work in the planned sequence and within agreed timescales, keeping the supervisor informed of progress, access restrictions, emerging defects and any risk to delivery.
• Diagnose mechanical faults using approved methods and undertake repairs or component replacement only where trained, competent and authorised.
• Test and recommission equipment following maintenance, confirming safe operation and escalating any unresolved issue before returning plant or systems to service.
• Support the continuity and reliability of essential site systems by responding appropriately to breakdowns, defects and operational priorities.
• Complete work orders, inspection sheets, test results, asset records and other maintenance documentation accurately and promptly.
• Work collaboratively with supervisors, planners, other trades, facility representatives and approved contractors to coordinate activities and minimise disruption.
• Identify and report unsafe conditions, asset deterioration, recurring faults and opportunities to improve safety, reliability, maintainability or service delivery.

About The Company

OCS UK & Ireland is a leading facilities management company with 50,000+ colleagues and a turnover in excess of £2bn.We deliver innovative, award-winning services within facilities management, hard services, cleaning, security and catering.

Our mission is to make people and places the best they can be for our colleagues, customers and the communities we serve.

Our commitment to doing business the right way is rooted in our TRUE values - Trust, Respect, Unity, and Empowerment.

Why Work for OCS

• Award-Winning Employer: Ranked 36th on Glassdoor’s Best Companies to Work For 2025 — we value and motivate our people.
• Digital Learning: The OCS Academy offers digital courses and resources to help you build skills and grow your career.
• Retail Perks: With our Hapi app, you can gain access to exclusive discounts, rewards and wellbeing resources.
• Professional Growth: 600+ live learners across UK&I — Empowering colleagues with further development and qualifications!
• Flexible Pay: Access a portion of earned wages before payday with our Wagestream App! (Contract Specific)

We are an equal opportunities employer and rely on a diverse workforce with a broad range of knowledge, skills, and backgrounds to deliver our goals. We offer an inclusive and welcoming environment and actively encourage applications from all individuals regardless of race, gender, nationality, religion, sexual orientation, disability, or age.