Digital Realty Data Center Interview: Questions, Process & Prep

September 28, 2026

Full disclosure: UptimeJobs isn't affiliated with Digital Realty. This isn't official Digital Realty material — we don't work for them or speak for them. It's an independent guide built from publicly reported candidate experiences and job postings, meant to help you prepare. Every interview is different, so treat this as orientation, not a script.

If you've got a Digital Realty interview coming up for a Critical Facilities Engineer, Data Center Engineer, or Remote Hands Technician role, here's what candidates and job postings suggest about the process, and how to walk in ready.

The process at a glance

Based on aggregated reports on data center hiring at colocation operators like Digital Realty, the process typically runs about two to three weeks (roughly 14–21 days) from first recruiter contact to offer, and is generally rated approachable-to-moderate depending on the level.

A common flow: a recruiter screen, then a hiring-manager technical screen, often followed by a panel or senior-engineer technical round, a behavioral round, and sometimes a final leadership conversation for more senior roles. For facilities roles, a site tour is frequently part of the process — you may see the actual facility you'd work in.

What the interview actually covers

The focus depends heavily on your track — facilities engineer vs. Remote Hands technician.

1. Critical systems knowledge (facilities engineer track)
This is the heart of a Digital Realty facilities interview. Their own postings spell out what they want: solid experience with mission-critical infrastructure — UPS, HVAC, generators, cooling, fire/life-safety systems, and BMS (building management systems). Expect to talk through:

How these systems work and how you maintain them
Redundancy — Digital Realty emphasizes that "all systems have redundancy," so understanding N+1, 2N, and why redundancy matters for uptime is valuable
Uptime pride — Digital Realty highlights achieving "five 9s" (99.999%) uptime for nine consecutive years. Showing you understand what that reliability standard demands (and that you'd protect it) resonates strongly
Following MOPs, SOPs, and RAMS (methods/standard operating procedures and risk assessments) rather than improvising

One encouraging note: Digital Realty's postings explicitly say that while data center experience is strongly preferred, they'll also consider experience from hospitals, nuclear plants, and the military — other mission-critical environments. So if your background is critical-systems work outside data centers, frame it that way; it counts.

2. Hardware and customer support (Remote Hands track)
For the Remote Hands Technician role, expect more on server hardware, cabling, cross-connects, installs, and — importantly — customer service. Because Remote Hands techs support Digital Realty's colocation customers, interviewers want to see you can troubleshoot hardware and communicate professionally with clients.

3. Troubleshooting and safety (both tracks)
Expect a scenario-style question about responding to a failure — a cooling unit down, a power anomaly, an alarm. A strong answer is structured and safety-first: confirm the symptom, protect the critical load, follow the facility's SOP, escalate appropriately (to your manager or the critical facilities engineer), and document afterward. A key thing interviewers screen for: never freelance a procedure in a live data center — follow the SOP and escalate. Familiarity with NFPA 70E and Lockout/Tagout signals you can be trusted around energized equipment.

4. Behavioral
Expect standard behavioral questions — why Digital Realty, how you handle pressure, teamwork, and how you've handled a real incident. Use the STAR method (Situation, Task, Action, Result), and prepare a few real examples. Given the emphasis on uptime and reliability, examples showing dependability and careful, procedure-driven work land well.

How to prepare

Know the critical systems cold (facilities track). UPS, generators, HVAC/cooling, fire/life-safety, BMS, and the concept of redundancy (N+1, 2N). Be able to explain both how you maintain them and why they matter for uptime.
Speak to "mission-critical" experience — even from outside data centers. Hospital, nuclear, military, or industrial critical-systems experience counts at Digital Realty; frame it clearly.
Practice the failure-scenario answer. Confirm, protect the load, follow SOP, escalate, document. Emphasize that you follow procedure and never freelance.
Prepare STAR stories. A few real examples of handling pressure, incidents, teamwork, and mistakes.
For Remote Hands, show customer-service instincts. It's a client-facing role; demonstrate you can troubleshoot and communicate well.
Know your safety basics — NFPA 70E and Lockout/Tagout.
Be ready for shift-work questions. 24/7 operations, on-call, and after-hours support are standard. If you're open to it, say so.

A note on entry paths

Digital Realty also runs apprenticeship / trainee engineer programs in some markets — structured on-the-job training that can lead to a full-time data center role. If you're breaking in without direct experience, look for these; they're a genuine door into the field, and they emphasize learning MOPs/SOPs and critical systems from the ground up.

The bottom line

The Digital Realty interview rewards genuine critical-systems knowledge, a calm and procedure-first approach to problems, and a real respect for uptime and safety. Whether you're on the facilities-engineer track (UPS, cooling, generators, redundancy) or the Remote Hands track (hardware plus customer service), come in able to talk concretely about hands-on work, follow-the-SOP discipline, and why reliability matters — and you'll be ready.

For the full picture on pay, the facilities and Remote Hands tracks, requirements, and how Digital Realty hiring works, see our companion guide: Digital Realty Data Center Jobs: Pay, Requirements, and How to Get Hired.

See current openings: We aggregate data center jobs across operations, power and cooling, and facilities roles at operators nationwide on our board. Browse current data center jobs →

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