Interim CTO Services for the Week Your CTO Leaves
A full-time technology leader in the empty seat, contract engineers under them, and a written handback to the permanent CTO.
Interim CTO services put an experienced chief technology officer in your company full-time for six to nine months after a CTO leaves. The interim stabilizes the team, makes the urgent calls, and hands the seat to your next hire.
Last updated: September 29, 2026
- This page
- An empty CTO seat, covered five days a week until the permanent CTO starts, with contract engineers backfilling the people who left with the old one.
- Not this page
- A part-time leader for a seat nobody has held yet is a fractional CTO. The permanent hire runs through CTO staffing and executive search.
Nobody plans for this call. Nobody. A CTO resigns on a Thursday, or the board lets one go, or the deal closes and the founding CTO’s retention package turns out to be shorter than everyone assumed, and the search for a permanent replacement will take months. Production doesn’t wait for it.
So we staff the gap. An interim CTO from our engineering staffing bench takes the chair with the full CTO title and authority, never a deputy’s, and runs the org while the permanent search runs beside them. Two jobs. One budget line.
Three Ways an Interim CTO Gets the Call
How the last CTO left decides what week one looks like. Plan for it.
- They resignedYou probably get a notice period, and that’s the only exit with a real handover in it. Use every day of it. The risk is quieter. Senior engineers who joined for that person start taking recruiter calls, and in our experience the first resignation letter comes from the engineer the CTO hired personally.
- You let them goNo handover at all. Access gets cut the same afternoon, which is right. Then somebody has to work out which accounts only that person could open.
- An acquisition pushed them outThe founding CTO leaves at close or at the end of a retention period, and the buyer’s integration plan still has a date on it. The interim answers to two sets of executives for a while. Worth knowing going in.
Each one needs a different first conversation with the team. None of them needs a six-week pause while the board debates the job description, because the engineers are already reading the silence and the ones with options are pricing them.
The Custody Sheet an Interim CTO Works From
A CTO seat holds more than a title. It holds accounts, escalations, contracts and decisions, and the day the last CTO leaves, too many of them sit with exactly one person. Here’s the one we use.
- Weeks 1 to 4StabilizeTake custody. Meet every direct report. Keep production boring.
- Weeks 5 to 23DecideMake the calls that can’t wait and write down the ones that can.
- Weeks 24 to 27Hand offOverlap with the permanent CTO, then leave on the date in the agreement.
- Cloud root account Day 0One person, with the MFA on their phone Wk 1Move the sign-in email to a company alias and register a second MFA device HandbackPermanent CTO and head of infrastructure
- Code organization owner Day 0The departed CTO, alone Wk 1Add a second owner, then audit who can push to production HandbackPermanent CTO and a staff engineer
- Domain registrar and DNS Day 0Nobody could find the login Wk 2Recover the account and move the renewal onto a company card HandbackPermanent CTO and IT operations
- Last call on a production incident Day 0The CTO, at any hour Wk 2Hold it personally, then write the escalation path down HandbackTwo senior engineers on a rotation, not the CTO
- Security control ownership Day 0The CTO’s name on every control Wk 3Reassign each control before the next audit window opens HandbackSecurity lead and permanent CTO
- Vendor contracts and renewals Day 0In an inbox nobody else reads Wk 4List every renewal due in the next two quarters HandbackPermanent CTO and finance
- The decision left on the desk Day 0A replatform the CTO was still weighing Wk 8Decide it, or defer it in writing with the reason HandbackA decision log the permanent CTO and CEO both sign
- The board’s technology update Day 0Due next quarter, owned by the CTO Wk 10Present it, including what changed and why HandbackPermanent CTO, with the CEO in the room
Day 0 · 6 of 8 held by one person, 2 by nobody who could be foundHandback · 8 of 8 held by two named people
Now read the handback column again. Nothing on it says “the interim.” That’s the point of the job. An interim who is still the only person with the keys in month five is holding your company hostage by accident, and a decent one works to make themselves unnecessary.
GitHub’s own guidance on ownership continuity recommends at least two owners per organization, Google’s admin security guidance wants more than one super administrator, each run by a separate person, and AWS describes the account root user as a single sign-in with complete access to every service and resource in the account. One person holding any of them is a risk before anyone leaves. After a departure it’s the first thing to fix. Week one, not week six.
Contract Engineers for Whoever Left With Them
A CTO rarely leaves alone. Watch the seniors. Within a quarter, one or two senior people often follow, and they’re usually the ones holding the parts of the system nobody else understands. An interim CTO with nobody to delegate to spends the engagement on call.
So the interim comes with a bench. We backfill the seats underneath them with contract engineers on KORE1’s W-2, sized to the gap rather than to a plan. Three seats come up most.
- Senior software engineerPicks up the service the departed lead owned. Typical bill rate $108 to $160 an hour.
- DevOps or platform engineerKeeps deploys and the incident rotation running while the interim rewrites who owns what. Usually $85 to $140.
- Cloud or solutions architectFor the replatform decision the old CTO left open, so the interim decides with evidence. Figure $130 to $190.
Those ranges come from our contractor rate guide. Some of these contractors stay. When one fits the team the permanent CTO inherits, contract-to-hire terms let you convert them, and when they roll off, their access comes out the same day it went in for.
Interim, Fractional or Permanent CTO?
All three put a technology leader in charge. They answer different questions, and the most expensive mistake we see is buying one while you needed another.
| Model | Days a week | How long | Typical cost | Right when |
|---|---|---|---|---|
| Interim CTO | Five | Six to nine months | $25K to $45K a month | The seat was filled and suddenly isn’t |
| Fractional CTO | A day or two | Open-ended | $8K to $22K a month | You need senior judgment but not a full-time executive yet |
| Permanent CTO | Five | Years, you hope | $260K to $520K base, plus equity | The next 18 months of strategy hinge on one technology leader |
Cost ranges match our CTO hiring guide. Day rates for interim executives run $1,200 to $2,400, and the wider comparison across the C-suite is in contract, interim or fractional.
The misfire runs both ways. A fractional CTO at two days a week can’t hold an empty seat, because incidents and resignations don’t book themselves on Tuesdays. And an interim hired to run one migration is a project dressed up as a leadership gap.
45–75
days for most KORE1 CTO searches to close
3–6 wks
from first call to an interim executive starting
17 days
average for a KORE1 IT hire, contract backfill included
92%
of KORE1 placements still in the seat after twelve months
Sources: KORE1 placement data and our executive search desk, placing people since 2005.
The Interim CTO Handback Plan
Write the ending on day one. An interim engagement without an exit date drifts, and a board that gets comfortable stops pushing the search.
- The search starts in week twoOur CTO recruiters run the permanent search alongside the interim, with a target start date written into the interim agreement and reviewed monthly.
- The interim sits on the panelThey know the codebase and the team better than anyone interviewing, so they assess finalists. Not as a candidate, unless they said so on the first day.
- A decision log changes handsEvery call made, every call deferred and why, plus the custody sheet with two names on every line.
- Two to four weeks of overlapThe permanent CTO runs the staff meeting, the interim sits in the back, and then leaves on the date both sides already agreed.
What if your interim is the CTO you should keep? It happens. Not often. Write the conversion price into the contract up front, while you still have something to trade.
“My job is to set the direction, provide context, and remove obstacles. How the team gets there is largely up to them.”
Kris wrote that about running his own teams, over 25 years spent mostly in fintech and mortgage technology. It’s also the right brief for an interim, who should set direction and clear the path without becoming the only person able to approve anything. The custody sheet is built on it. If the org chart is the real problem, our engineering org design advisory fixes it without an interim at all.
One Engagement, Four Parts
Most clients use all four. Some need one. We’ll tell you which on the first call.
The seat
A full-time interim CTO
A proven technology executive who carries the CTO title and shows up five days a week.
Interim executive placementThe bench
Contract engineers underneath
Senior, platform and architecture contractors on our W-2 for the seats that emptied with the CTO.
IT staffingThe search
The permanent CTO
A retained search that runs beside the interim, so the handback date is real rather than hopeful.
CTO executive searchOne level down
When it’s the VP who left
If the gap sits under a CTO who’s staying, you need an interim VP of Engineering instead.
Interim VP of Engineering
Common Questions
What is an interim CTO responsible for?
An interim CTO runs the technology organization full-time until a permanent CTO starts. That means holding production and security, keeping the senior team from walking, making the decisions that won’t wait for a new hire, and presenting to the board. It doesn’t mean setting a five-year vision the next CTO has to live with.
How much does an interim CTO cost?
$25,000 to $45,000 a month is the usual range for a full-time interim CTO. Where a given engagement lands depends on company size, how many engineers report up to the seat, and whether there’s a deal or an audit in the window. Contract engineers under the interim bill separately. By the hour.
How long do interim CTO engagements run?
Six to nine months, most of the time. The permanent search is the clock. Our CTO searches mostly close between day 45 and day 75, then the new hire gives notice, and the interim overlaps for two to four weeks before leaving.
Is an interim CTO different from a fractional CTO?
Yes. An interim CTO works every weekday for a set period and covers a seat that just emptied, while a fractional CTO gives you a day or two each week with no set end, usually at a company that hasn’t needed a full-time CTO yet. Hiring fractional hours for an interim job is the mistake we get called to fix most.
How fast can an interim CTO start?
Three to six weeks from the first call is typical. Good interims are usually finishing something else, and a full-time commitment takes a little time to clear. Call us the day you hear, not after the notice period runs out.
Can the interim CTO become our permanent CTO?
Sometimes, and it’s better planned than improvised. Say so at the start, because an interim who might be a candidate shouldn’t also be judging the finalists. Agree the conversion price before anyone needs it.
Should our VP of Engineering just step up instead?
Maybe, if they already carry the board’s confidence and someone can take their current job. Often neither is true. A stretched VP running two jobs for six months tends to lose both, and the company loses its best internal candidate for the permanent seat along the way, which is a lot to give up to save one interim’s fee.
Tell Us Who Left and When
How the CTO left, the size of the team, and what lands on the calendar this quarter. A KORE1 executive recruiter will ring you back with a plan for the seat and the people under it.
Talk to Us About an Interim CTO →Or call 949-706-6990
