Data Center Technician.

nttlimited; Johannesburg; On-site; ZAR 350,000 - 480,000; Full time

Job summary

NTT DATA is seeking a Skilled Critical Facilities Maintenance Technician to oversee data center mechanical, electrical and fire life safety systems, ensuring high uptime and regulatory compliance. You will lead a team, coordinate with contractors, and implement preventive and predictive maintenance programs to optimize efficiency and cost.

You will work with chilled water systems, HVAC units, electrical distribution, UPS, fire protection, BMS/PLC controls, and monitoring systems to deliver

Qualifications

• Experience with data center mechanical and electrical systems.
• Ability to read blueprints and schematics.
• Familiar with NFPA codes and data center fire life safety standards.
• Experience coordinating with contractors and teams on upgrades and maintenance.
• Proactive in preventive and predictive maintenance to maximize uptime.

Responsibilities

• Develops cost‑effective maintenance strategies for mechanical, electrical, and fire life safety systems.
• Maintains and improves data center uptime and reliability.
• Supervises contractors and reviews quality of work.
• Performs preventive/predictive maintenance and system testing.
• Keeps documentation up to date and informs teams of changes.

Skills

Electrical systems

Mechanical systems

Fire life safety

Team leadership

Preventive maintenance

Tools

MS Office Suite

BMS/PLC Controls

UPS systems

Job description

Make an impact with NTT DATA Join a company that is pushing the boundaries of what is possible. We are renowned for our technical excellence and leading innovations, and for making a difference to our clients and society. Our workplace embraces diversity and inclusion - it's a place where you can grow, belong and thrive.

Your day at NTT DATA

The Skilled Critical Facilities Maintenance Technician has a substantial understanding of their role and applies their knowledge and skill to carry out their responsibilities relating to the operational integrity and regulatory compliance of the data center electrical, mechanical, and fire life safety systems.

This role maintains and follows the processes that maximize customer uptime in the most cost-effective way. This role also ensures that data center problems are identified and repaired quickly, that contractors deliver quality services, and that internal customer demands are met.

The Skilled Critical Facilities Maintenance Technician acts as an informal team leader, fostering a collaborative and innovative team culture focused on achieving operational excellence.

Key Responsibilities

Develops creative approaches to keeping operational costs to a minimum, improves efficiency, and implements new strategies. Systems of responsibility include -

• O Mechanical responsibilities include chilled water systems and components, HVAC systems such as roof top units, CRAC/CRAH units, and humidification systems.
• O Electrical responsibilities include electrical/critical power distribution from the Utility/Generator main switchgear through the UPS systems out to the customer load.
• O Fire Life Safety responsibilities includes wet sprinkler systems and pre-action sprinkler systems as well as their associated detection devices.

Tests performance of electromechanical assemblies and electronic voltmeters.

Reads blueprints, schematics, diagrams, or technical order to determine methods and sequences of processes.

Inspects parts for surface defects.

Installs electrical or electronic parts and hardware in housings or assemblies, using hand tools.

Aligns, fits or assembles component parts, using hand or power tools.

Operates, monitors, maintains, and responds to abnormal conditions in facilities systems. Areas include - Mechanical, Electrical, Fire Life Safety, and Building Monitoring and Control.

Analyses systems to ensure best practices for both internal and external customers.

Provides feedback to relevant teams on the effectiveness of existing standards and processes.

Works with contractors and consultants to review quality assurance for all system expansions, corrections, and upgrades.

Works with relevant teams to track and complete an aggressive preventive and predictive maintenance program.

Ensures data center operates at maximum operational efficiency, including analyzing existing operating conditions, recommending new technologies and improving overall efficiency, and cost reduction.

Manages systems to avoid unplanned customer-impacting events.

Works with relevant teams to determine maintenance requirements for mechanical, electrical, and fire life safety systems.

Performs other duties as assigned.

Knowledge and Attributes

Understanding of the mechanical, electrical, and fire life safety systems used in a data center environment including, but not limited to the following - electrical distribution and layout, Transformers, PLC's, Generators, Switchgear, UPS systems, STS', ATS' PDU's, Chilled Water Systems, CRAC/CRAH's, Pre-Action Sprinkler Systems.

Knowledge of NEC, NFPA 70E, NFPA 72, NFPA 25, and compliance issues as well as building codes in regard to fire life safety.

Current knowledge in industrial safety best practices (i.e. lockout/tag out, arc flash protection, OSHA and state regulations).

Familiarity with data trending / tracking and analysis and the ability to utilize a PC based integrated critical monitoring systems.

Ability to process Hands and Eye requests as required i.e., Tape Rotation, Rack and Stack of equipment, inventory hardware, power cycle devices, patch cable install/removal.

Demonstrated hands-on experience installing, maintaining, and/or troubleshooting large commercial and industrial systems including -

• O Chilled Water Systems
• O Large Centrifugal Chillers
• O Cooling Towers
• O Heat Exchangers
• O Water Treatment Systems
• O VFD's and Pumps
• O HVAC equipment
• O CRAC/CRAH's
• O Humidification Systems
• O Water heaters
• O Water/Air filters
• O BMS and PLC Controls
• O Emergency Standby Diesel Generator Systems
• O Fuel/Oil systems
• O 480/277 and 208/120 electrical generation and distribution
• O Static UPS Systems
• O Double Interlock Pre-Action Systems

Proficient with MS Office Suite (Word, Excel, PowerPoint, Project).

Ability to communicate effectively with customers and internal staff and effectively work in team environment

Ability to coordinate, supervise, and communicate with contractors who perform maintenance or upgrade work on these systems.

Ability to learn quickly and a