To operate as part of a site-based team of maintenance engineers, delivering planned preventative maintenance (PPM) and reactive maintenance activities across a portfolio of client buildings. The role includes the inspection, maintenance, fault diagnosis, and repair of building services systems, ensuring all assets operate safely, efficiently, and in compliance with statutory and contractual requirements while maintaining high standards of customer service and operational performance.
KEY TASKS & RESPONSIBILITIES
Monitor and manage the operation and performance of critical building services systems.
Undertake planned preventative maintenance (PPM) and reactive repairs on mechanical systems
Diagnose and rectify plant faults promptly to maintain operational continuity
Maintain accurate maintenance records and update the client's CAFM/helpdesk system using mobile technology
Ensure statutory compliance records, health & safety documentation, and quality assurance records are kept current and accurate
Supervise, escort, and monitor specialist subcontractors working on site
Operate safely within the Permit to Work system and comply with all QHSE procedures
Support quality inspections, housekeeping standards, and continuous improvement activities
Monitor building environmental conditions via the BMS and optimise building performance and occupant comfort
Develop strong client relationships, maintain a professional image, and promote a safe and healthy working environment
QUALIFICATIONS, SKILLS & EXPERIENCE
Level 3 NVQ Diploma in Mechanical Engineering Maintenance (or equivalent).
City & Guilds Mechanical Engineering qualification (Level 2 or Level 3).
Completed Mechanical Engineering Apprenticeship.
Health & Safety awareness, including Permit to Work systems.
Experience working on HVAC, heating, ventilation, air conditioning, and refrigeration systems
About you
An appropriate mechanical engineering qualification, supported by demonstrable experience in the maintenance and operation of building services within critical and laboratory environments, is essential for this role.
Knowledge of the facilities management sector is desirable, with a thorough understanding of building services engineering and the maintenance of mechanical systems considered essential
Technical expertise covering mechanical ventilation, heating & cooling systems, including associated plant, controls, and distribution pipework
Knowledge or awareness of BMS and electrical systems
Knowledge of key operational procedures e.g. planned maintenance systems (CAFM) / QHSE.
Experience of managing and resolving customer concerns within a contract-based environment, with a proactive and customer-focused approach to problem solving and service improvement
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)
How to Apply:
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.
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Maintenance Engineer – Mechanical in Oxford employer: OCS Group
OCS UK & Ireland is an award-winning employer that prioritises the growth and wellbeing of its employees, offering extensive training and development opportunities through the OCS Academy. Located in Hammersmith, our team enjoys a supportive work culture that values trust, respect, unity, and empowerment, alongside benefits such as flexible pay options and access to exclusive retail discounts. Join us to be part of a diverse workforce dedicated to making a positive impact in facilities management.
