HVAC Supervisor - Gas Bias

OCS; Greater London; On-site; GBP 32,000 - 42,000; Full time

Job summary

OCS is seeking a dedicated First-Line Supervisor to join the Mobile Team in the UK. The role focuses on overseeing engineering operations, coordinating activities, and delivering top-tier client support within a hands-on supervisory capacity.

The successful candidate will lead, participate in maintenance and reactive works, and drive health and safety, quality, and compliance across projects with the SDM and Operations team.

Qualifications

• Time-served engineer with Building services / GAS expertise.
• Valid driving licence is required.
• Minimum two years post-apprenticeship experience.

Responsibilities

• Supervising the engineering team to maintain efficiency and performance.
• Liaising with clients to foster strong relationships and provide outstanding service.
• Attending meetings to contribute valuable technical insights.
• Providing technical support to the Service Delivery Manager (SDM)/ Operations manager.
• Conducting technical audits.
• Supporting the SDM/ Operations manager with any other BAU requirements.

Skills

Customer-focused

Self-sufficiency & teamwork

Effective communication

Problem-solving

Technical proficiency

Risk awareness

Education

Two years post-apprenticeship experience

Job description

About The Role

We are seeking a dedicated professional to join our Mobile Team as a First-Line Supervisor within a mobile engineering environment. The successful candidate will play a crucial role in overseeing engineering operations, ensuring seamless coordination and support.

About The Role

We are seeking a dedicated professional to join our Mobile Team as a First-Line Supervisor within a mobile engineering environment. The successful candidate will play a crucial role in overseeing engineering operations, ensuring seamless coordination and support.

Responsibilities will Include

• Supervising the engineering team to maintain efficiency and performance.
• Liaising with clients to foster strong relationships and provide outstanding service.
• Attending meetings to contribute valuable technical insights.
• Providing technical support to the Service Delivery Manager (SDM)/ Operations manager.
• Conducting technical audits.
• Supporting the SDM/ Operations manager with any other BAU requirements.

This is a hands‑on supervisory role, meaning the candidate will not only lead but also actively participate in core engineering maintenance and reactive works. Excellence in customer service is paramount, ensuring our clients receive top‑tier support and solutions.

As part of the Mobile Team, the successful candidate will oversee and actively contribute to the technical aspects of engineering operations.

Key Responsibilities Include

• Review and validation: Conduct weekly timesheet reviews, approve overtime and validate technical paperwork and statutory documentation.
• Health & Safety – Drive Health and Safety through the delivery of toolbox talks and hazard reporting via Eco Online.
• Monitoring: Monitor sickness levels and carry out return to work interviews in a timely manner. Engage with SDM about any sickness that needs further escalation to HR.
• Technical training & development: Act as the designated super user for handheld devices, providing training and guidance to engineers on the proper use of OCS Q and lead on training during inductions for new starters.
• Documentation assessment: Regularly review engineer and subcontractor paperwork, identifying potential additional work opportunities and necessary reactive repairs from maintenance inspections.
• Audit & compliance: Perform audits of site logbooks, engineering activities, subcontractor operations, and ensure all tools, equipment, and vehicle inspections are completed as required.
• Helpdesk technical support: Provide expert guidance to the SCTS helpdesk on reactive jobs and support monthly planning for core PPM engineering work.
• Stakeholder engagement: Attend SDM meetings as needed, offering detailed updates on challenges and ongoing issues related to M&E and Fabric services.
• Leadership & supervision: Step in to deputize for the Maintenance SDM whenever required.
• Engineering operations: Execute PPM, proactive, and reactive work within designated time frames, ensuring client expectations are met.
• Emergency response: Participate in on‑call rotation, delivering emergency callout services as required.
• Contractor oversight: Monitor subcontractor activities and workmanship on behalf of SDMs, ensuring compliance with industry and company standards.
• Quality assurance: Maintain equipment and surrounding areas in line with agreed company standards.
• Client engagement: Uphold a professional service approach, proactively addressing client concerns and escalating as necessary.
• Contract & safety awareness: Ensure full understanding of contractual requirements and customer expectations while strictly adhering to Health & Safety legislation and OCS policies

Essential Requirements

To be considered for this role, candidates must meet the following criteria:

• Time-served engineer with expertise Building services /GAS, possessing a minimum of two years of full post-apprenticeship experience.
• Valid driving license

Desirable Skills & Attributes

• The ideal candidate will demonstrate the following qualities:
• Customer-focused approach
• Self-sufficiency & teamwork
• Commitment to safety
• Problem-solving mindset
• Effective communication
• Technical proficiency
• Risk awareness & escalation

Qualifications Required

While the qualifications required will depend on the role, here are some of the key certification’s we are looking for:

• F-gas CAT 1 qualified
• COCN1
• CODNC01
• CIGA1
• CORT1
• ICPN1
• TPCP1
• TPCP1A
• CCN1
• CENWAT
• CKR1
• HTR1

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.