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 About The Role: Working Days: Monday to Friday 08:00 - 17:00 About the Role We are looking for a skilled and motivated Refrigeration & Air Conditioning Engineer to join our mobile technical services team. You will be responsible for the maintenance, repair and some installation works of a wide range of air conditioning, refrigeration, and mechanical systems across commercial sites. Key Responsibilities As a Mobile Refrigeration & Air Conditioning Engineer, you will be responsible for delivering high-quality technical services across a range of commercial environments. Your duties will include: Technical Service & Maintenance Carry out planned and reactive maintenance, servicing, and repairs on: Split air conditioning systems VRV/VRF systems Air Handling Units (AHUs) and heat pumps Commercial refrigeration equipment, including chilled cabinets, multidecks and light commercial systems Diagnose faults and perform repairs on F-Gas infrastructure, electrical, and mechanical components, ensuring systems are restored to full functionality. Compliance & Standards Work in accordance with industry regulations, technical standards, and manufacturer guidelines. Ensure all work complies with F-Gas & ODS regulations, Permit to Work procedures, and Health & Safety protocols. Maintain safe working practices at all times, including when working at heights or in confined spaces. Documentation & Reporting Accurately complete: Service documentation Inspection reports Maintenance logs Remedial work records Use handheld devices (PDA or mobile apps) to update job status, record findings, and communicate with internal teams. Communication & Collaboration Liaise professionally with clients, site contacts, and internal teams to ensure clear communication and minimal disruption to operations. Work independently on assigned tasks and collaborate effectively within a small, supportive team. Emergency Support Participate in the emergency on-call rota, providing out-of-hours support as part of our 24/7, 365-day service commitment. Requirements Time-served apprenticeship in Air Conditioning/Refrigeration City & Guilds Level 2/3 NVQ or equivalent in HVAC, Refrigeration, or Mechanical Engineering F-Gas & ODS Regulations (Category 1 – 2079) Proven experience in a Maintenance or Facilities Management environment Hands-on experience with air conditioning and refrigeration systems Familiarity with split, VRV & VRF systems Understanding of Health & Safety legislation and safe working practices Familiarity with Permit to Work systems Comfortable working at heights, in confined spaces, and performing manual tasks Competent in using handheld devices for reporting and communication Strong verbal and written communication skills Self-motivated, reliable, and solution-focused Full UK driving licence How to Apply: If you are interested in joining a business that encourages professional development, career progression and the chance to work with inspirational people then please click apply and register your interest! You can also sign up to our job alerts when registering which will notify you when other suitable vacancies are available. 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.