HVAC Reactive Supervisor

LOCATION: Pier Walk, London

SHIFT PATTERN: Monday to Friday, 40 hours per week

SALARY: Competitive

If you require any additional support or adjustments during the recruitment process, please don't hesitate to contact our Recruitment Department at recruitment@abm.com . We're here to help!

Role Purpose 

The Mechanical HVAC Reactive Supervisor is responsible for supervising all reactive mechanical and HVAC maintenance activities across London Underground assets during day shifts. The role ensures safe, compliant, and efficient fault response, delivery against contractual SLAs and KPIs, and effective coordination with the Mechanical Coordinator to maintain operational continuity across the network. 

Key Responsibilities 

Reactive Maintenance & Technical Delivery 

• Supervise and deliver reactive maintenance and fault response for mechanical and HVAC systems, including:  

• AHUs, FCUs, VRF/VRV and split systems 

• Chillers, pumps, motors, valves, dampers 

• Station and tunnel ventilation systems 

• Associated pipework and control interfaces 

• Ensure rapid attendance, diagnosis, and rectification of faults in accordance with London Underground operational requirements. 

• Provide hands-on technical support where required to resolve complex faults. 

SLA, KPI & Performance Management 

• Manage reactive works in line with contractual Service Level Agreements (SLAs), including response and rectification times. 

• Monitor and drive performance against key KPIs, such as:  

• Response and attendance times 

• First-time fix rate 

• Asset uptime and availability 

• Quality and compliance of completed works 

• Escalate potential SLA risks or failures promptly to management and the Mechanical Coordinator. 

• Support continuous improvement initiatives to enhance reactive performance and service delivery. 

Supervision & Team Leadership 

• Supervise mechanical engineers, technicians, and subcontractors working on London Underground assets. 

• Allocate daily tasks and prioritise reactive jobs in a live operational environment. 

• Conduct toolbox talks, safety briefings, and site inductions. 

• Ensure workforce competence, correct tooling, and adherence to method statements. 

Safety, Compliance & Assurance 

• Ensure all activities comply with:  

• London Underground and TfL safety standards 

• Company policies and Safe Systems of Work 

• Relevant legislation (HASAWA, COSHH, PUWER, LOLER, F-Gas, etc.) 

• Review, brief, and implement RAMS. 

• Operate and enforce Permit to Work and isolation procedures as required. 

• Promote a strong safety-first culture across all reactive works. 

Ordering, Materials & Coordination 

• Raise and manage ordering of materials, spare parts, and specialist services required for reactive repairs. 

• Ensure correct parts are identified to minimise repeat failures and downtime. 

• Control material usage in line with contract and budgetary requirements. 

• Liaise closely with the Mechanical Coordinator to:  

• Agree priorities for reactive jobs 

• Coordinate labour, materials, and access 

• Provide updates on job status, delays, and technical issues 

• Support planning of follow-on works arising from reactive faults. 

Systems, Reporting & Administration 

• Ensure all works are accurately recorded in the CMMS, including:  

• Fault diagnosis 

• Actions taken 

• Parts used 

• Completion evidence 

• Provide daily activity reports, handovers, and performance updates. 

• Support audits, inspections, and client reviews. 

Stakeholder Liaison 

• Act as an operational interface with:  

• London Underground station and operations staff 

• Control rooms and access teams 

• Mechanical Coordinator and senior management 

• Communicate clearly and professionally in high-pressure operational situations. 

Qualifications & Experience 

Essential 

• NVQ Level 3 / City & Guilds or equivalent in Mechanical or HVAC discipline 

• Proven experience supervising reactive HVAC/mechanical maintenance 

• Experience working in safety-critical or infrastructure environments 

• Strong knowledge of HVAC plant and building services systems 

• IOSH Managing Safely or equivalent 

Desirable 

• Previous London Underground or TfL experience 

• F-Gas Certification 

• Experience managing SLA/KPI-driven contracts 

Skills & Behaviours 

• Strong leadership and organisational skills 

• Ability to manage competing priorities under operational pressure 

• Clear communicator with strong stakeholder management skills 

• Commercial and performance-aware mindset 

• Proactive, disciplined, and safety-focused 

Additional Requirements 

• Willingness to work across multiple LU locations 

• Ability to respond to emergencies and service-critical incidents 

• Must meet LU medical, security, and competency requirements 

Benefits

We’re proud to offer a great range of benefits including:

• 24/7 GP: Both you and your immediate family can speak to a UK-based GP from the comfort of your own home
• Mental Health support and Life Event Counseling
• Get Fit Programme
• Financial and legal support
• Cycle to work scheme
• Access Perks at Work, our innovative employee app where you can find:

• Perks: discounts, gift cards, cashback, and exclusive offers
• Life: Search for resources and tools on topics ranging from family and life to health, money and work
• Support: Online chat or telephone service for urgent support in a crisis

For more information about ABM’s benefits, visit our 

About ABM:

ABM (NYSE: ABM) is one of the world’s largest providers of integrated facility, engineering, and infrastructure solutions. Every day, over 100,000 team members deliver essential services that make spaces cleaner, safer, and efficient, enhancing the overall occupant experience.

ABM serves a wide range of market sectors including commercial real estate, aviation, mission critical, and manufacturing and distribution. With over $8 billion in annual revenue and a blue-chip client base, ABM delivers innovative technologies and sustainable solutions that enhance facilities and empower clients to achieve their goals. Committed to creating smarter, more connected spaces, ABM is investing in the future to meet evolving challenges and build a healthier, thriving world. ABM: Driving possibility, together.

For more information, visit .

ABM are committed to employment practices that promote diversity and inclusion in employment regardless of age, disability, gender reassignment, sex, marriage and civil partnership status, pregnancy and maternity status, race, religion or belief. We are proud members of the Armed Forces Covenant Employer Recognition Scheme.