Job Overview
A highly experienced Lead Refrigeration & Air Conditioning Engineer will join our mobile technical services team. This senior‑level role is ideal for a time‑served engineer with extensive experience in large‑scale refrigeration and HVAC systems who is also passionate about mentoring and supporting junior engineers.You will lead by example in delivering advanced technical services, supporting complex installations, and ensuring compliance across a diverse portfolio of commercial sites while playing a key role in knowledge sharing, technical guidance, and continuous improvement within the team.
Responsibilities
Technical Leadership & Mentorship
- Provide technical leadership and mentoring to junior and mid‑level engineers.
- Support training and development initiatives, including on‑the‑job coaching and technical troubleshooting guidance.
- Act as a point of escalation for complex technical issues and assist in root cause analysis and resolution.
Advanced Service & Maintenance Lead
- Plan and execute reactive maintenance, servicing, and repairs on large‑scale VRV/VRF systems, central plant refrigeration systems, chillers, cold rooms, multi‑compressor systems, advanced AHUs, heat pumps, and integrated HVAC systems.
- Diagnose and resolve faults across electrical, mechanical, and refrigerant systems with a focus on long‑term reliability and performance.
Compliance & Quality Assurance
- Ensure all works meet or exceed F‑Gas & ODS regulations, technical standards, and manufacturer specifications.
- Conduct quality audits and support continuous improvement in service delivery and compliance.
- Promote and enforce safe working practices across all operational activities.
Documentation & Reporting
- Review and validate service documentation, inspection reports, and remedial work records.
- Provide technical feedback and improvement suggestions to internal teams and clients.
- Use digital tools (PDA/mobile apps) to manage workflow, reporting, and communication.
Client Engagement & Collaboration
- Build strong relationships with clients and stakeholders, offering expert advice and reassurance.
- Collaborate with internal teams to support project planning, mobilisation, and service enhancements.
- Represent the technical team in client meetings and site reviews when required.
Emergency Support & Escalation
- Participate in the emergency on‑call rota and provide senior‑level support during critical incidents.
- Lead or support emergency response efforts, ensuring rapid resolution and minimal disruption.
Qualifications
- Time‑served apprenticeship in Refrigeration/Air Conditioning City & Guilds Level 3 NVQ or equivalent in HVAC, Refrigeration, or Mechanical Engineering.
- F‑Gas & ODS Regulations (Category 1 – 2079) compliance knowledge.
- Minimum 5–10 years of hands‑on experience in commercial HVAC/R systems.
- Proven experience with large‑scale refrigeration systems and central plant equipment.
- Strong understanding of Health & Safety legislation and Permit to Work systems.
- Experience mentoring or supervising engineering teams.
- Excellent fault‑finding and diagnostic skills.
- Proficient in using digital reporting tools and mobile apps.
- Strong communication and leadership skills.
- Full UK driving licence.
Benefits
- Digital learning opportunities through the OCS Academy, offering courses and resources to build skills and grow your career.
Refrigeration and Air Conditioning Engineer in Cardiff employer: OCS Group Limited
OCS Group Limited is an excellent employer that values its cleaning specialists by providing comprehensive training and a supportive work environment in Little Stanney. With a strong focus on employee growth and development, the company fosters a culture of teamwork and respect, ensuring that every team member feels valued and empowered to excel in their role. Additionally, OCS Group Limited offers competitive benefits and a commitment to health and safety, making it a rewarding place to build a career in the cleaning industry.
