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Salary
≈ $40k – $88k per year (Estimated)
Location
In office (United Kingdom)
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 29, 2026. First seen by Alion on Oct 27, 2026. CyrusOne scores B on the Alion truth index.

Overview
Company
Impact
Profile match
CyrusOne designs, builds and operates enterprise-class and hyperscale data centres, selling colocation, peering and build-to-suit capacity to cloud providers and large enterprises. Founded in 2001 and headquartered in Dallas, Texas, it runs more than 40 carrier-neutral facilities across North America and Europe, with campuses in markets such as Northern Virginia, Phoenix, Texas, London and the Netherlands. The company was taken private by funds managed by KKR and Global Infrastructure Partners, and now hires mainly in critical-facility operations, construction, engineering and data-centre security.
Backed by Abry Partners
The Role

This is a critical engineering role with an enviable list of high-profile customers.

CyrusOne’s primary aim is to maintain a 100% uptime and deliver best in class service whilst operating some of the most efficient and cost-effective DCs within the industry.

This is Day engineer role with the core hours being (9am - 5pm) subject to business needs and will be used to provide Data Centre operations and engineering cover for our London sites.The role supports the Data Centre supervisor in overall responsibility for the buildings’ Electrical and Mechanical systems, both from a preventative and reactive maintenance perspective. Change management and incident management are also key elements of this role. This person must possess strong verbal and written communication skills. They will work closely with the supervisor with the planning of the day to day works and provide continuity across the shifts.

Key Responsibilities

  • Proficient in the complete end-to-end use of ServiceNow, Zendesk, MCIM, ProxyClick,

and any proprietary software packages for booking work, monitoring tickets, and

training engineers.

  • Perform PPMs and onsite management of contractors' PPMs and service repairs on

critical data centre systems, along with all associated administrative duties (UPS,

SBM, PDU, Generators, ATS, STS, Chillers, CRAH, AHU, Humidifiers, Building Controls,

etc.).

  • Conduct isolation, earthing, and reinstatement of critical data centre electrical and

mechanical equipment and systems as required, following CyrusOne safety rules.

  • Read, review, and amend data centre electrical/mechanical system drawings.
  • Control of confined spaces where applicable.
  • Monitor BMS, respond to critical and non-critical alarms while on site, perform

diagnostics, follow escalation procedures, coordinate repairs, and process related

administrative tasks.

  • Monitor and perform customer requests 24x7x365 and escalate when required as per

escalation procedure with SLA timeframe.

  • Manage common shift mailbox and action items in a timely manner.
  • Operate and inspect critical infrastructure on site, determine systems are functioning

as per design, and that maintenance is performed in accordance with manufacturers

recommendations and/or CyrusOne policy and procedure.

  • Write, Review, Dry-Run and Modify CyrusOne’s Safe system of Works to reduce Human

Error and ensure 100% uptime of the site.

  • Must maintain a minimum of HVAP Status and relevant qualifications whilst in the role,

perform switching frequently and cover out-of-hours support when business needs

dictate.

  • Perform Reactive / Remedial works as raised on ticketing system on all Critical

Equipment and building infrastructure.

  • Cover shift including nights at short notice when the business requires it.
  • Facilitate the management and execution of audit-related tasks pertaining to health,

safety, and operations.

  • Ensure that Method Statements and Risk Assessments are prepared for all tasks

carried out to ensure safe working practices. Scrutiny of sub-contractors’ RAMS,

competency records, and company QHSE requirements prior to PTW/ATW and

customer QHSE control procedures.

  • Ensure the provision of a safe and healthy working environment, and ensure

compliance with all company policies and procedures, as well as client site policies,

procedures and working arrangements, as required. Including raising and escalating of

hazards when raised by staff.

  • Must adhere to CyrusOne PPE and company uniform polices.

Accountabilities

  • Accountable to Data Centre Supervisor and Data Centre Manager.
  • The post holder does not have any directly reporting staff.
  • This post carries no direct budgetary responsibility.

Education

  • Recognised formal Electrical or Mechanical training (City and Guilds etc.).
  • Knowledge and operation of critical building infrastructure (e.g., electrical, mechanical

and fabric).

  • Security Cleared to BPSS and SC levels.

Training

  • Working as a Building Service Engineer in a critical environment.
  • DC experience.
  • Team working.
  • Undertaking multi-discipline engineering tasks.
  • HVAP appointment 3 months from completion of the AP1 course.

Experience

(Essential)

  • Strong written, verbal & PC communication skills.
  • Ability to prioritise work tasks.
  • Adaptable and flexible in approach to work requirements.
  • Effective problem-solving skills.
  • Ability to remain calm under pressure.
  • Reliable.
  • Conscious & detailed approach to all work activities.
  • Results/tasks orientated.
  • Ability to perform tasks that require physical fitness.
  • Good decision-making skills in an outage situation.
  • Must be able to work continental shift pattern.

(Desirable)

  • Fire system experience.
  • First aid.
  • Understanding of Risk Assessment & permit to work requirements.
  • Understanding of waste management & documentation.
  • Knowledge of NICEIC certification and documenting requirements.
  • HVAP experience.
  • Mechanical system experience.
  • Controls/BMS systems experience.

Aptitudes

  • Positive and confident.
  • Supportive team member & role model to others within the maintenance team.
  • Professional approach & demeanour; producing quality workmanship at all times with

a smart appearance.

Character

  • Committed to the delivery of excellent customer service.
  • Positive contribution to supporting the business as it strives for “best in class”.
  • Calm manner, able to work under pressure.
  • Able to make sound decisions when needed.
  • Physically fit and able to carry tools and components by hand up to 20kg.
  • Able to ascend and descend vertical access equipment.
  • Able to work at heights.

Circumstances

  • Must be willing to provide holiday and sickness cover at short notice and be flexible in

their working patterns.

  • Must be able to work continental shift pattern.
  • Work and travel between all London Facilities.

This Job Description is a guide to the work that you will be required to undertake. It may

be changed from time to time to meet changing circumstances. It does not form part of

your contract of employment

CyrusOne is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, or other legally protected status.

CyrusOne provides reasonable accommodation for qualified individuals with disabilities in accordance with the Americans with Disabilities Act (ADA) and any other state or local laws. We will respond to requests for reasonable accommodations to assist you in applying for positions at CyrusOne, or to submit a resume.

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