01 Operate · Hub · Run live sites

Run live data centers

Data center operations is where a facility earns its uptime. These are the four roles that keep the floor running: technician, NOC operator, critical facilities and network & cabling. What each one does, who it suits, and how to prepare with the method interviewers reward.

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Explore the facility · 5 systems

The building you'll run

Select a system to see who works it and where the interview questions come from. This is the same map every role page grounds itself in.

Facility systems Live

Power chain

Utility to ATS to UPS to PDU to rack: the chain every outage question walks.

Who works on this

Critical Facilities · Technician · MEP Design · Commissioning

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Question Bank · Critical Facilities track

Where you are on the Operate path

Start with the interview gate. Climb as your role deepens.

Where to start: the free 25 questions, then the Interview Question Bank as the core paid step, then the systems course underneath it. Each rung builds on the one before.

Aiming beyond operations? The Engineer path covers design, commissioning and controls. Preview the Engineer path

Four operations roles

The tracks that run the floor

Each role owns different systems and a different interview focus. Pick the one closest to your background, or explore a few before you commit.

Data Center Technician

Data center technicians do the hands-on work on the floor: racking and stacking servers, running and dressing cables, swapping failed hardware, and acting as remote hands for teams that can't be on site.

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NOC Operator

NOC (Network Operations Center) operators are the eyes of the site. They watch dashboards and alerts, triage what matters, open and drive incidents, and coordinate the right people to respond, often across multiple facilities at once.

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Critical Facilities Technician

Critical facilities technicians keep the physical environment running: utility feeds, UPS and batteries, generators, switchgear, and the cooling systems that stop equipment from overheating. When these fail, the whole site is at risk.

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Network & Cabling Technician

Network and cabling technicians build and maintain the physical layer: structured copper and fiber, patch panels, cross-connects, and the labeling and documentation that keep thousands of connections traceable.

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Trades on Site

Trades on a data center build install the systems everyone else will later operate: containment and busway runs, chilled-water pipework, ductwork, cable containment and terminations. The work is ordinary trade work done under extraordinary discipline: permits, inspection points, and evidence for everything.

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Contractor / CSA

CSA is the civil, structural and architectural backbone of the build: slabs and structure, walls and roofs, doors and fire barriers, and the thousand penetrations every service needs through them. On a data center the CSA scope finishes first and gets punctured by everyone else, so coordination is the job.

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QA/QC Quality Engineer

The QA/QC engineer runs the quality system the whole build answers to: inspection and test plans for every discipline, hold and witness points that stop work until signed, non-conformance reports when reality misses the specification, and the turnover dossier that proves the building was built as designed.

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MEP Design Engineer

MEP design engineers shape the electrical and mechanical systems a data center lives or dies by: the power train from utility to rack, the cooling plant and distribution, and the redundancy topology that decides what fails safely. The design idiom is compact: most of it can be read off a one-line diagram, and technical screens expect you to.

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Commissioning Engineer

Commissioning engineers prove the facility works before anyone trusts it with load. The work climbs a ladder: factory tests before shipping (L1), inspection on arrival (L2), start-up and pre-functional checks (L3), functional performance tests on each system (L4), and the integrated systems test (L5) where the whole building is failed on purpose and must recover.

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Controls / BMS Engineer

Controls engineers make the plant observable and automatic. The building management system (BMS) runs the mechanical side: sequences of operations for chillers, CRAH units and pumps, the points that sense and command them, the graphics and trends operators live in. The electrical power monitoring system (EPMS) does the same for the power train. Design intent becomes day-to-day operability at this desk.

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Orient · certification map

Not sure which certification comes first?

The Certification & Vendor-Course Navigator maps which credential fits your operations role, what each is worth, the order to take them in, and the free vendor courses to complete before you pay for anything.

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Free PDF · Operate hub

25 interview questions, with what the interviewer is really checking

A free two-page PDF: 25 real operations interview questions in five skill clusters, each with the thing the interviewer is actually testing printed underneath. Read it, say your answers out loud, and find your gaps before the interview does.

Get the free PDF