Mason Sargeant
High Wycombe,Buckinghamshire
Summary
Data Centre BMS Support Engineer with a Critical Facilities background and over two years’ experience in live, business-critical environments. Experienced in electrical installation, responding to BMS/PMS alarms, supporting reactive and planned maintenance, and working under Permit to Work and SSOW to maintain uptime, redundancy, and safe 24/7 operations.
Overview
11
11
years of professional experience
1
1
Certification
Work history
BMS Support Engineer
BMSI
Slough
2025.10 - Current
- Attended multiple live data-centre sites to carry out planned preventative maintenance (PPM) on Building Management Systems in line with site procedures and RAMS.
- Liaised with on-site facilities teams during sign-in, Permit to Work, and RAMS review, building strong working relationships and capturing operational issues for investigation.
- Performed physical inspections of BMS outstations and field devices, ensuring equipment condition and compliance within plant rooms and data halls.
- Connected to Trend and Schneider controllers to carry out system health checks, take backups, and investigate active and historical alarms.
- Responded to reactive callouts for BMS faults including sensor failures, out-of-range readings, and loss of communications between head ends and outstations.
- Fault-found and resolved BMS issues where possible, escalating where required to maintain safe operation of critical systems.
- Calibrated and replaced temperature, pressure, and humidity sensors across HVAC and critical plant systems.
- Investigated and resolved issues raised by facilities teams, ensuring BMS performance aligned with operational requirements.
- Modified and optimised BMS logic where required to improve system performance and reliability.
- Supported commissioning activities including point-to-point testing, graphics development, logic creation, and system integration.
- Completed detailed service reports following PPMs, callouts, and commissioning works, providing clear handover to client facilities teams.
CFE Apprentice (Installation & Maintenance)
Equinix
Slough
2023.08 - 2025.10
- Supported live, business-critical data centre operations in line with site procedures, SSOW, and Permit to Work.
- Responded to BMS temperature, humidity, and system alarms, investigating and escalating faults to maintain uptime.
- Carried out planned and reactive maintenance on critical electrical and mechanical systems (AHUs, CRAHs, PDU meter changes, generators, fire systems, leak detection, sprinkler pumps).
- Assisted senior technicians with LV & HV switching, following approved switching schedules and safety procedures.
- Completed testing including emergency lighting, fire alarm, leak detection, and generator offloads.
- Monitored HVAC via BMS and electrical systems via SCADA.
- Completed PPMs and maintenance records using Maximo, ensuring accurate documentation and audit readiness.
- Took ownership of the PowerShield battery monitoring system, responding to alarms and coordinating battery replacements.
- Installed, terminated, and tested electrical circuits, lighting, sockets, and containment in accordance with BS7671.
- Carried out electrical testing using Fluke and Megger.
- Conducted thermal imaging surveys and battery impedance testing to assess equipment condition.
- Escorted and supervised contractors and customers, ensuring compliance with RAMS and site H&S procedures.
Planner
Costa Express
High Wycombe
2018.06 - 2023.07
- Responsible for the planning and scheduling of jobs for engineers within the UK
- Meeting SLAs and achieving 100% completion of annual services before due dates
- Communicating with partners to book engineers in, update them on job status and arrange installations
- Continuously reviewing my own work and trialing and implementing improvements that can be rolled out throughout the team
- Constantly demonstrating an ability to work effectively within a fast-paced environment
- Flexible with work hours and have a proven ability to respond and adapt to business needs
- Managing multiple tasks and responsibilities at one time and being able to prioritize and adjust as needed
- Accurately producing daily/weekly/monthly reports for the time
- Demonstrating skills with the use of excel and constantly trying to find new ways to display the data in the most accessible and helpful way for fellow colleagues and managers across the organization
- I have taken ownership of and am responsible for the regional administration of vehicle tracking tool
- I have created and implemented the Standard Operation Procedures for the Planning Team & Field Service Team
- Planning with geographical efficiency, ensuring task completion without unnecessary loss of time and resources.
Electrical labourer
RJN Electrical
High Wycombe, Bucks
2015.07 - 2018.05
- Assisted in first and second fix electrical installations, in domestic properties including ring mains, radial circuits and lighting.
- Installed sockets, switched, light fittings, extractor fans and other electrical accessories.
- installed containment and supported cable routing through floor and ceiling voids.
- pulled and prepared cables including T&E, singles and flex.
- Supported the installation and upgrade of consumer units.
- Carried out basic testing under supervision.
- Assisted clearing, cleaning and preparing work areas.
- Communicated with householders in a respectful and professional manner.
Skills
- Use of testing instruments
- BMS & SCADA monitoring
- Understanding of HVAC systems and mechanical plant
- Use of hand tools and power tools
- Customer/Client interaction
- Understanding of basic networking concepts
- Communication skills
- Quick learner
- Computer Literate
- Familiarity with various operating systems (Windows, Linux, macOS)
- Documentation
- Time management
- Self starter
Certification
- Level 3 City & Guilds 2366 diploma in Electrical Installations
- City & Guilds 2382 – 18th Edition Wiring Regulations
- Safe Isolation - City & Guilds Assured
- First Aid At Work - British Red Cross
- IPAF A&B
- Schneider EcoStruxure Certification
Timeline
BMS Support Engineer
BMSI
2025.10 - Current
CFE Apprentice (Installation & Maintenance)
Equinix
2023.08 - 2025.10
Planner
Costa Express
2018.06 - 2023.07
Electrical labourer
RJN Electrical
2015.07 - 2018.05