Senior Authorised Person - Mechanical

Global Commissioning; Dublin; On-site; EUR 90,000 - 120,000; Full time

Job summary

Global Commissioning is seeking a Senior Authorised Person – Mechanical (SAP) to lead safe control of hazardous energy for mechanical systems on site, including data centres and power facilities. You will implement, manage, and govern Safe Systems of Work and coordinate with mechanical, electrical teams and vendors to ensure all activities are planned, tested, and handed over safely.

The role requires extensive hands-on experience, with strong knowledge of LOTO, pressure tests, and commissioning

Qualifications

• Completion of a recognised mechanical trade apprenticeship or equivalent hands-on qualification.
• CSCS / Safe Pass.
• SMSTS or SSSTS.
• Desirable: HNC, HND, or BEng (Hons) in Mechanical Engineering or Building Services.
• Desirable: Certified Mechanical AP/SAP training.

Responsibilities

• Act as the Senior Authorised Person for mechanical systems, managing and enforcing Global Commissioning’s Safe Systems of Work.
• Implement and control mechanical isolations, lock‑out/tag‑out (LOTO), drain‑downs, pressure relief, testing, and safe reinstatement.
• Issue, manage, suspend, and cancel mechanical Permits to Work and associated safety documentation.
• Review and approve Risk Assessments and Method Statements (RAMS) for mechanical works.
• Oversee pre‑functional testing, pressure testing, flushing, chemical cleaning, and commissioning readiness activities.
• Attend and contribute to commissioning, coordination, and safety meetings.
• Coordinate mechanical commissioning activities with electrical and controls teams.
• Attend and support Functional Performance Testing (FPT) of critical systems.
• Carry out final inspections and “white glove” reviews prior to system handover.
• Ensure compliance with site safety procedures, mechanical standards, and applicable legislation.
• Maintain effective communication between contractors, vendors, and client stakeholders.
• Support incident response, emergency situations, and high‑risk operations when required.

Skills

Industrial mechanical plant

Mechanical isolations

HVAC systems

Hazardous energy control

Education

Mechanical trade apprenticeship

CSCS / Safe Pass

SMSTS or SSSTS

Engineering degree (HNC/HND/BEng)

Tools

AP/SAP training

Job description

Role Overview

The Senior Authorised Person – Mechanical (SAP) is responsible for the safe control of hazardous energy (COHE) for mechanical and electro‑mechanical systems on site. The role focuses on the implementation, management, and governance of mechanical Safe Systems of Work (SSoW) across complex, high‑risk environments such as data centres and multi‑fuel power generation facilities. The SAP will coordinate closely with mechanical and electrical Authorised Persons, vendors, client and vendor commissioning managers, and health & safety teams to ensure all mechanical activities are planned, executed, and reinstated safely and compliantly.

Systems under the SAP’s control may include, but are not limited to:

• Multi‑fuel generating plant


• Diesel fire pumps and sprinkler systems


• Fuel oil, lubricating oil, oily water, and urea systems


• Treated water and compressed air systems


• Cooling systems (HVAC, chilled water)


• Exhaust and air inlet/outlet systems


• Fire suppression systems


• Natural gas systems

Key Responsibilities

• Act as the Senior Authorised Person for mechanical systems, managing and enforcing Global Commissioning’s Safe Systems of Work


• Implement and control mechanical isolations, lock‑out/tag‑out (LOTO), drain‑downs, pressure relief, testing, and safe reinstatement


• Issue, manage, suspend, and cancel mechanical Permits to Work and associated safety documentation


• Review and approve Risk Assessments and Method Statements (RAMS) for mechanical works


• Oversee pre‑functional testing, pressure testing, flushing, chemical cleaning, and commissioning readiness activities


• Attend and contribute to commissioning, coordination, and safety meetings


• Coordinate mechanical commissioning activities with electrical and controls teams


• Attend and support Functional Performance Testing (FPT) of critical systems


• Carry out final inspections and “white glove” reviews prior to system handover


• Ensure compliance with site safety procedures, mechanical standards, and applicable legislation


• Maintain effective communication between contractors, vendors, and client stakeholders


• Support incident response, emergency situations, and high‑risk operations when required

Leadership & Management

• Provide leadership and supervision to mechanical teams, contractors, and subcontractors


• Manage complex and high‑risk mechanical activities in live or operational environments


• Demonstrate strong decision‑making under pressure, particularly during isolations, reinstatements, and fault conditions


• Promote a strong safety culture and proactive hazard identification

Qualifications

• Essential - Completion of a recognised mechanical trade apprenticeship or equivalent hands‑on mechanical qualification.


• Essential - CSCS / Safe Pass.


• Essential - SMSTS or SSSTS.


• Desirable - HNC, HND, or BEng (Hons) in Mechanical Engineering or Building Services Engineering.


• Desirable - Certified Mechanical AP/SAP training.

Skills & Technical Knowledge

• Extensive hands‑on experience with industrial mechanical plant, systems, and equipment


• Proven expertise in mechanical isolations, LOTO, and hazardous energy control


• Strong working knowledge of:


• HVAC and cooling systems


• Natural gas and fuel oil systems


• Pressure systems and rotating equipment


• Mechanical plant associated with power generation and data centres


• Sound understanding of commissioning processes and documentation (Cx Plans, FAT, SAT, ITPs)


• Familiarity with ATEX and DSEAR regulations


• Strong understanding of Irish, UK, and EU health, safety, and environmental legislation, including HSA requirements


• Fully proficient in Microsoft Office applications

Experience

Essential

• Minimum of 5 years’ experience in mechanical commissioning, maintenance supervision, or as a Mechanical Authorised Person / Senior Authorised Person


• Proven ability to manage multiple contractors and coordinate complex mechanical systems during commissioning

Desirable

• Experience in data centres, power generation, pharmaceutical, offshore, or other high‑hazard / critical infrastructure environments


• Previous roles such as Mechanical AP, Mechanical Maintenance Supervisor, Plant Shift Leader, or Lead Commissioning Engineer

Development & Support

Global Commissioning is committed to developing its people. We will fully support candidates with the potential to grow into or strengthen this role through further education, CPD, mentoring, and structured training pathways.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistences or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.