AI retrofit and liquid cooling conversion
Data Center Headhunters recruits critical facilities, data center operations, construction and delivery, commissioning, power and cooling, and executive talent for colocation, hyperscale and enterprise sites. We research the market, contact working people and qualify a shortlist for your opening. No upfront fee. You pay only if you hire.
Converting a live hall to liquid cooling means piping, fluid and high-density racks go in beside running equipment, and the people you hire have to have done it before the first coolant touches a floor.
This is what we do all day: recruit data center professionals.
No postings. No stacks of resumes. No chasing. You interview a short list.
No upfront fee. You pay only if you hire.
No upfront fee. You pay only if you hire.
We offer a candidate replacement guarantee on standard search agreements. The applicable period and exact terms are set out in the signed client recruiting agreement.
- No upfront fee
- Pay only if you hire
- Data centers only, construction to operations
- Local and 100% travel candidates
- Replacement guarantee on standard searches
What does this hire really come down to?
A retrofit is harder than a new build because the hall is already earning. Every cut, weld and drain-down happens near customers or production loads. The people who do well have worked in occupied space, planned their isolation and said no when a window was too tight.
A strong new-build superintendent who has never worked around live load can still make a costly mistake on day one. The first judgment is which experience matters most for your conversion. Direct-to-chip loops, coolant distribution units and rear-door heat exchangers are different jobs. Some engineers know the facility water side well and have never touched the technology loop. Others know the rack side and are weak on plant capacity. Name the system you are converting before you search, and ask each candidate which part they actually owned.
The second judgment is density. Moving from a modest rack load to a heavy one stresses power, floor loading and heat rejection at the same time. A hire who treats cooling as a separate problem from power will miss limits. Look for people who raised the question of electrical headroom before anyone else did. A last point is who you need at what stage. Early on, you need an engineer who can test whether the plant can carry the load. Later, you need a field lead who can execute in tight windows. These are rarely the same person.
What do we check before you see anyone?
Ask for the last project they performed next to occupied space and what isolation they planned. A real plan includes valves, drains and a rollback. Ask which loops they designed, installed or commissioned and what fluid was used. Vague answers about cooling in general are a warning.
- Live-site work: ask for the last project they performed next to occupied space and what isolation they planned. A real plan includes valves, drains and a rollback.
- Liquid loop ownership: ask which loops they designed, installed or commissioned and what fluid was used. Vague answers about cooling in general are a warning.
- Fluid cleanliness: ask how they flushed, filtered and tested before connecting equipment. Dirty fluid ruins cold plates, so detail matters.
- Leak response: ask what leak detection they installed and what happened the first time something dripped. Honest stories show experience.
- Power coordination: ask how they checked electrical capacity for higher density racks and who they involved.
- Window discipline: ask when they refused a maintenance window and why. A person who never refuses is a risk.
Where do we find these candidates?
Retrofit engineers come from colocation operators that have already begun conversions, from mechanical contractors with plant experience, from commissioning firms that tested liquid systems and from industrial process cooling work. Some come from high-performance computing sites, where liquid cooling has been normal for years.
- Retrofit engineers come from colocation operators that have already begun conversions, from mechanical contractors with plant experience, from commissioning firms that tested liquid systems and from industrial process cooling work. Some come from high-performance computing sites, where liquid cooling has been normal for years.
- They move when their current site has no plan to convert, when they are asked to run old systems only or when a project they built is finished. Some want to stay with a technology that is growing. Others are tired of travel and want a single live site to own.
- Describe the system, the loads and the occupied space honestly. People who have done this work ask about those details before pay.
Which hiring mistakes should you avoid?
Do not hire a new-build lead for a live hall and learning too late that isolation planning was never part of their experience. Do not treat liquid cooling as a mechanical-only problem and leave electrical capacity unchecked. Do not skip fluid cleanliness standards in the hiring conversation, then discover the field team has none.
- Hiring a new-build lead for a live hall and learning too late that isolation planning was never part of their experience.
- Treating liquid cooling as a mechanical-only problem and leaving electrical capacity unchecked.
- Skipping fluid cleanliness standards in the hiring conversation, then discovering the field team has none.
Your search in 3 steps
- Pin down the system
We ask which cooling approach you are converting to, how much of the hall stays live and what plant capacity exists. That decides whether you need a design lead, a field lead or both.
- Screen for live-site habits
We ask candidates about isolation plans, flushing, leak response and refused windows, then report how concrete their answers were.
- Match the phase
We help you decide who comes first, usually an engineer to test capacity, and who follows to execute, so each hire is judged against the right job.
Explore the relevant desks
Questions
Should we hire an engineer or a superintendent first?
Usually an engineer, to confirm that plant and power can carry the load. A superintendent hired before that may be working to a plan that does not hold. Tell us how far along your design is and we will advise.
How do we check liquid cooling experience in an interview?
Ask which fluid, which loop and what went wrong at startup. People who did the work remember cleanliness failures and slow leaks. General claims about cooling tell you little.
Is high-performance computing experience useful?
Often yes, because those sites ran liquid loops early. The difference is that your hall is live and customer facing, so ask how they handled change control.
What if the contractor has not yet been chosen?
Hire the owner-side engineer first so they can judge bids. A contractor chosen without that person may oversell its liquid experience.
How should we handle travel for a single-site retrofit?
If the site is local, treat it as a normal permanent hire. If it is remote, set your own housing and per diem policy and share it before candidates meet your team.
Start your search
How a search runs
How does The Six-Step Search work?
Every search runs the same six steps. We agree the brief with you, map where the people work, find direct contact routes, reach out personally and repeatedly, then qualify each candidate live. You only see a short list of people who fit, with notes on each, and we stay with you through offer and start.
- 01
Search Calibration
You get: A written brief you sign off on: scope, must-haves, pay band and who not to approach.
- 02
Market Mapping
You get: A map of the companies and projects where your future hire is working today.
- 03
Professional Contact Intelligence
You get: Verified direct contact routes to the people on that map, not job board replies.
- 04
Persistent Personalized Outreach
You get: Repeated, role-specific outreach to people who are not looking, in your words.
- 05
Live Candidate Qualification
You get: Each candidate is screened live against your brief before you hear their name.
- 06
Candidate Intelligence and Process Support
You get: A short list with candidate briefs, then support through interviews, offer and start.
What should you know before you send a role?
What does it cost to hire through Data Center Headhunters?
No upfront fee. You pay only if you hire. Fee terms are set out in the signed recruiting agreement.
How long until I see a short list?
It depends on the role, the location and the market. We agree a realistic timeline with you during Search Calibration and keep you updated as the search runs.
How do you handle counteroffers?
We talk through motivation, pay and counteroffer risk with each candidate during live qualification and again before an offer, so you hear about the risk before it surprises you.
Is there a guarantee?
We offer a candidate replacement guarantee on standard search agreements. The applicable period and exact terms are set out in the signed client recruiting agreement.
What don't you do?
We do not post your job on boards, send stacks of unscreened resumes or charge an upfront fee. We do not approach candidates for your search before the brief is agreed with you.
Need this person?
No upfront fee. You pay only if you hire.
We offer a candidate replacement guarantee on standard search agreements. The applicable period and exact terms are set out in the signed client recruiting agreement.