The short-engagement structure
- Minimum term: 3 months
- Notice period: 30 days, either party
- Day rate: €1,000–€1,500 in Europe, $1,600–$2,500 in the US
- Commitment: typically 2 days/week
- Total cost at minimum: ~€36,000–€54,000
Define the mandate first
A short-cycle engagement only works if scope is rigid. Define 2–4 concrete deliverables before signing. Common mandates:
- Complete technical due diligence package for upcoming round
- Architect and recruit for a specific new product line
- Run interim coverage between CTO departure and full-time hire
- Hire two senior engineers and install sprint cadence
Avoid these contract traps
- No exit clause: insist on a 30-day rolling notice; never sign a fixed 12-month with no early termination
- Equity-only compensation: for short engagements, cash dominates; equity belongs in 12-month+ structures
- Vague scope: "advise on technical strategy" is not a mandate, it's a fee
- No deliverable acceptance criteria: define what "done" looks like
Where to source short-cycle fractional CTOs
- HighCircl: vetted European bench, 72-hour matching
- Specialist recruiters: Robert Half Executive, Heidrick CTO practice
- VC talent partner introductions (informal, portfolio-only)
- Personal network referrals from prior CTOs and VP Engineering operators
The trial-to-extend pattern
Run the first 3 months as a trial. If the engagement is delivering, extend to 9 months at a slightly improved day rate (volume discount). HighCircl's data: roughly 65 percent of 3-month trials extend to a 9–12-month engagement; the remaining 35 percent close cleanly with the original mandate delivered.
