Site Supervisor

jci; Newcastle upon Tyne; On-site; GBP 42,000 - 62,000; Full time

Benefits offered by this job

Company vehicle

25 days holiday

Pension contributions

Life assurance

Employee assistance programme

Discounts on Johnson Controls products

Cycle-to-work scheme

Training opportunities

Job summary

Johnson Controls is seeking a Site Supervisor for Teesside (Static Site) to lead on-site engineers and subcontractors, delivering fire detection, gas suppression and mechanical suppression services. You will personally perform planned maintenance and supervise others, maintaining high safety and quality standards while fostering strong client relationships.

The role emphasizes leadership, hands-on technical delivery, and ensuring compliance with site safety protocols, RAMS, and reporting

Qualifications

• Experience with fire detection/alarms (primary skillset).
• Experience with gas suppression systems.
• Ability to perform hands-on maintenance and servicing.

Responsibilities

• Lead on-site engineers and subcontractors; build strong client relationships.
• Carry out maintenance, servicing, fault-finding and repairs on fire alarm systems.
• Oversee gas and mechanical suppression works and ensure safety compliance.

Skills

Fire alarm systems

Gas suppression

Mechanical suppression

Hands-on maintenance

Team leadership

Job description

Site Supervisor – Teesside (Static Site)

About Us:

Johnson Controls, a global leader in thermal management, mission-critical building systems, energy efficiency, and decarbonization, helps customers use energy more productively, reduce carbon emissions, and operate with the precision and resilience required in rapidly expanding industries such as data centers, healthcare, pharmaceuticals, advanced manufacturing, and higher education.

For more than 140 years, Johnson Controls has delivered performance where it really matters. Backed by advanced technology, lifecycle services and an industry-leading field organization, we elevate customer performance, turn goals into real-world results and help move society forward.

Johnson Controls isseekingan experienced and proactiveSite Supervisorwith a strongfire alarm engineering backgroundto oversee and support the delivery offire alarm servicing, gas suppression systems, and mechanical suppression systemsat a key static site in Teesside.

This role is ideal for someone who is not only confident leading others but is also technicallyhands-on, able to carry out maintenance tasks themselves, and committed tomaintainingthe highest standards of safety, compliance, and service delivery.

About the Role

As the Site Supervisor, you will lead a team ofon-siteengineers and subcontractors while also completingyour own planned and reactive maintenance tasks. You will ensure the effective delivery of all fire detection, gas suppression, and mechanical suppression services across the site.

You willbe responsible forplanned preventative maintenance, routine servicing,fault-finding, and remedial works on a range of systems, including:

• Conventional and addressable fire detection systems

• Networked and graphical fire alarm systems

• Gas extinguishing systems (e.g.,Argonite, CO2,Inergen, Novec)

• Mechanical fire suppression equipment and fire extinguishers

You will act as the primaryon-sitepoint of contact, ensuring smooth operations, strong client relationships, and full compliance withsite-specificsafety and quality standards.

What We Offer

• Competitive salaryand commission scheme

• Company vehicle, fuel card, and full PPE

• Door-to-doorpayments

• Overtime andcall-outrota payments

• 25 days holiday plus bank holidays

• 7% matched pension contributions, life assurance, and employeeassistanceprogramme

• Discounts on high street brands and Johnson Controls products

• Cycle-to-workscheme

• Employee referral scheme

• Extensive training andcross-skillingopportunities

• Access to business resource groups

• Supportive, collaborative team culture

• Clearlong-termcareer development pathways

Key Responsibilities

Leadership & Site Management

• Lead, support, and coordinateon-siteengineers and subcontractors

• Build strong working relationships with the client and ensurehigh levelsof customer satisfaction

• Act as the main point of escalation for technical or operational issues

• Monitor subcontractor performance and ensure all work meets required standards

• Support the coaching, development, and onboarding of engineers and apprentices

Technical Delivery (Hands-On)

• Personally carry out maintenance, servicing,fault-finding, and repairs on fire alarm systems

• Support and oversee works on gas suppression and mechanical suppression systems

• Perform integrity testing (training provided ifrequired)

• Assistwith estimating, commissioning, and client training whererequired

• Identifyand communicate remedial works, system deficiencies, and upgrade opportunities

• Ensureaccuratecompletion of allon-sitedocumentation, daily work diaries, and service reports

Safety & Compliance

• Conduct safety and quality audits to ensure compliance with legislation and company standards

• Ensure all engineers followsite-specificsafety andhigh-hazard environment requirements

• Promptlyidentifyand report health and safety concerns, near misses, and site hazards

• Attend mandatory training andmaintainup-to-datecertifications

• Ensure full adherence to RAMS, PPE requirements, toolbox talks, van audits, and accident investigations

• Promote azero-harmculture and drive continuous improvement in safety performance

What We're Looking For

Essential

• Strong experience working withfire detection and fire alarm systems(primary skillset)

• Experience withgas suppression systems

• Understanding ofmechanical fire suppression equipment

• Ability and willingness to carry outhands‑on maintenance and servicing

• Previoussupervisory or team leadership experience

• Excellent communication and customer service skills

• Ability to inspire, influence, and build strong working relationships

• Proactive approach toproblem‑solvingand unexpected situations

• Full UK driving license

• Flexibility to travel for training whenrequired

• Strong organisational skills and attention to detail

Desirable

• Experience in highly regulated orhigh-hazardenvironments

• Knowledge of passive fire protection

• Experience coaching or developing engineers

Make a Real Impact

At Johnson Controls, we don't just maintain systems - we help create safer environments. If you're ready to take the next step in your career and lead a high-performing team while remaining technically hands-on, we'd love to hear from you.