Senior Authorised Person

Company logo
Mercury
Builds and manages complex engineering and construction projects for leading global corporations.
Lead electrical safety officer overseeing HV/MV/LV systems in data centre projects.
7 days ago ago
Expert & Leadership (13+ years), Experienced (8-12 years)
Full Time
Dublin, County Dublin, Ireland
Onsite
Company Size
2,919 Employees
Service Specialisms
Construction services
Project Management
Consulting
Engineering
Design
Technical Services
Turnkey
Sector Specialisms
Life Sciences
Data Centres
Technology
Mechanical Services
Pharmaceutical
Oil & Gas
Utilities
Manufacturing
Role
What you would be doing
energisation
safety permits
lockout tagout
hazard auditing
compliance training
switching plans
  • Review and manage of commissioning process’ from Level 2B to Level 5 including tagging process’ prior to energisation and activities to achieve successful IST.
  • Senior Authorised Person will be responsible for any live or potentially live systems under their control.
  • Manage and Improve Processes.
  • Initiating Action and work alone.
  • The Senior Authorised person must be fulltime onsite and nominate a deputy of equal competencies to act on limited occasions in their absence.
  • Implement Mercury SOP’s, jurisdictional requirements, client requirements, project specific ESSOW’s and ensure they are employed on the project through managing, auditing and permitting.
  • Manage, audit, employ and enforce adherence to an Electrical Safety Permit System including access control.
  • Monitor relevant subcontractors/ vendors ensuring works are being completed within legislation and Mercury SOP’s including testing procedures and results.
  • Plan and execute safe electrical energisations, isolations and switching including approval of requests, drafting and approval of switching plans. The Senior Authorised Person will ensure that approved switching plans and system boundaries are in place as required for HV/ MV and LV systems.
  • The Senior Authorised Person will ensure periodic inspection and auditing is completed as required by Mercury’s SOP, client requirements and jurisdictional requirements.
  • Maintaining performance under pressure.
  • Complete any training required for compliance in jurisdiction and with Mercury ESSOW. Ensure team members are competent prior to appointment, including training requirements for their roles. This must be recorded and monitored to ensure continued development and compliance.
  • Be conversant with arc flash risk, hazard identification and mitigation measures, including electrical safety PPE. Monitor the condition of PPE and safety equipment, advice project Senior Authorised Person of calibration requirements or replacement safety equipment as required.
  • Identify electrical hazards and implement mitigation deemed necessary.
  • Assist in electrical incident investigations should an incident occur ensuring that all Accidents, Incidents or Dangerous Occurrence associated with work on Electrical Distribution Systems, are immediately notified to the Mercury Designated Person.
  • Managing team performing high risk activities and ensuring compliance.
  • Authorise Energisation and Isolation re quests ensuring that the system is utilised on the project.
  • Manage, audit and enforce the principles and application of control of hazardous energies procedures including operational control of lock out tag out system.
  • Escalate any safety breaches or non-compliance issues to the Person in Charge of the Electrical Installation and Senior Engineer prior to hazard causing risk.
  • Establish and maintain positive and effective working relationships with project team, peer workers and vendors.
  • Attend project meetings sharing updates and limitations for future planned works. These may include but are not limited to site meetings, internal project meetings, engineering reviews, applicable planning and scheduling meetings and hand over meetings.
  • The Senior Authorised Person will ensure any project mitigation against electric shock and arc flash are adhered to including the provision, sign out and monitoring of arc flash PPE to effected personnel according to the project arc flash study or the assessment made by the Senior Engineer assisted by the Senior Authorised Person.
  • Establish and maintain positive and effective working relationships with permit applicants providing clarity and direction as required on the system including familiarisation training.
  • Senior Authorised Person will manage the electrical safety communication process’ on the project through warning signage, energisation notices, toolbox talks, system updates and permitting. Any concerns or incidents to be escalated to Person in Charge of the Electrical Installation, Nominated Senior Engineer and EHS Dept.
  • Manage the Emergency removal of a safety lock should the condition arise.
  • Review and approve electrical safety related risk assessments and method statements.
  • Share system status updates with project team and project Cx. Manager in a timely and concise fashion.
  • Provide evidence of successful completion of colour blindness test if not done so during proof of qualification.
  • The Senior Authorised persons must present toolbox talks to the project teams at regular intervals throughout the project and share information with project EHS team to be included in tool box talks/ project safety communications.
  • Manage, monitor and operate access control system in conjunction with approving, cancelling and closing Electrical Safety Permit System.
What you bring
level 6
hv authorised
electrical award
testing
coordination
safety compliance
  • Following instruction both verbal and written.
  • Understand, interpret and work from various forms of project information such as SLD's, wiring diagrams, schematics, punch list procedures, vendor manuals, etc. and “redline” as necessary and ensure that effected parties such as the Authorised Person team are familiar and compliant.
  • Coordination, communication and planning skills.
  • In depth knowledge of Health, Safety and Quality compliance
  • Be conversant and familiar with equipment or complete familiarisation training including but not limited to main panels, ACB’s, MCCB’s, MCB’s, RCBO’s, VSD’s, MCC’s, busbar, sub distribution boards and final circuits. Ensure necessary parties are also competent.
  • Excellent communication skills
  • Any specific jurisdictional qualifications
  • Senior Authorised Person must be conversant with jurisdictional regulations and ensure compliance.
  • Excellent technical knowledge of Electrical systems
  • Other suitable electrical award, equivalent to Level 6 or higher on the National Framework of Qualifications
  • Demonstrated history of delivering HV/MV Infrastructure projects, DC / DNO / IDNO / Power Generation if nomination is at HV or MV levels.
  • Be competent to perform pre and post connection electrical testing, perform live dead live testing and assess results for compliance and safety.
  • Experience managing work and safety precautions across control boundaries.
  • Experience in testing and verification of HV/ MV and LV systems.
  • Experience performing / supervising advance cable works including phasing, testing, identifying.
  • Understand, interpret and work from various forms of project documentation such as Punchlist Procedure, As Built Procedure, Vendor Manuals etc. ensuring familiarisation is also carried out with effected parties such as the Authorised Person team.
  • Completed high voltage authorised person training course in last 2 years
  • Knowledge of Mechanical systems
  • Have successfully obtained a suitable electrical award, equivalent to Level 6 or higher on the National Framework of Qualifications.
  • Proven record of supervising and managing large installation projects
  • Be competent to perform electrical trouble shooting should an issue arise.
  • Ability to drive a large-scale project
  • Be fully conversant with the National Rules for Electrical Installations for the jurisdiction
  • A trade background and 10 - 15 years previous experience managing large installation projects and sub-contractors.
  • Excellent IT skills
  • Experienced in design and build
  • Completed low voltage authorised person training course in last 2 years
  • Qualified electrician awarded the National Craft Certificate as part of the National Framework of Qualifications or equivalent for the region.
  • Ability to work well within strict deadlines
  • Be a qualified electrician awarded the National Craft Certificate as part of the national Framework of Qualifications or equivalent in the jurisdiction and verified by Naric.
  • Complete jurisdictional training such as a recognised course in Verification, Testing and Certification and a recognised switching course at HV/MV and LV in previous two years.
Benefits
Information not given or found
Training + Development
Information not given or found
Company
Overview
Founded 1972
Year Established
The company was established in 1972 by Frank O’Kane and Joe Morgan in Dublin.
€500M Revenue
Annual Turnover
The company generates over €500 million in annual revenue through large-scale, high-tech projects.
€25M Milestone
Recent Project Achievement
Recently completed a significant €25 million hyperscale data center facility.
25+ Countries
Global Reach
The company has successfully completed projects in over 25 countries worldwide.
  • Delivers complex engineering and construction projects—often turnkey mechanical, electrical, and commissioning works—across Europe and beyond.
  • Their specialisms span mechanical and electrical engineering, sprinkler and fire-protection systems, data-center infrastructure, and commissioning services.
  • The company’s history is marked by early adoption of BIM, prefabricated modular construction, and digital commissioning platforms—underscoring its tech-driven edge.
Culture + Values
  • WORK SAFE | HOME SAFE
  • BRAVE
  • DYNAMIC
  • MAKE IT HAPPEN
Environment + Sustainability
Top 25% Ranked
Sustainability Ranking
The company is recognized for its responsible business practices, ranking in the top 25% of companies globally as rated by EcoVadis.
50%+ Certified
Green Building Projects
Over half of the company's projects are pursuing LEED and BREEAM certifications, highlighting its commitment to sustainable construction practices.
33k kg CO₂ Neutralized
Carbon Offset Initiative
The company has neutralized 33,000 kilograms of carbon dioxide through its tree-planting program, contributing to global reforestation efforts.
100% Green Electricity
Energy Supply
All Irish offices and facilities operate on entirely green electricity, reducing the company's reliance on fossil fuels.
  • Achieved zero waste to landfill on projects across Ireland, UK, Italy, France, Netherlands, Poland and Belgium
  • Implemented Smart Waste tracking system to measure CO₂ emissions and waste data in real time
  • Disclosed environmental impact through CDP since 2020
Inclusion & Diversity
40+ nationalities
Global workforce diversity
The company's global workforce is comprised of employees from over 40 different nationalities.
2024 Gender Pay Gap Reports
Transparency in pay equity
The company has published Gender Pay Gap Reports in Ireland and France for 2024 to promote pay equity.
10 years
Career development support
Group mentoring programmes are available for staff in their first 10 years of their careers.
  • Executive-driven Diversity & Inclusion Policy embedded across employee lifecycle
  • Hosts talks, events and courses to support women in construction and improve gender equality
  • Group mentoring programmes for women and foreign nationals
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