Series A and B companies face a hiring problem that’s genuinely difficult to navigate: you’ve raised enough capital to need real executive leadership, but you haven’t reached the scale that justifies full-time executive salaries across every function. The typical Series A company at $3–5M ARR needs strategic leadership in finance, marketing, and operations — but hiring three full-time VPs at $200,000+ each would consume a significant portion of the raise.
Fractional executives solve this problem directly, but the decision of which functions to staff fractionally and when to transition to full-time is consequential. This guide provides a stage-by-stage framework. For more on this topic, see our guide on startup founder’s guide.
The Series A Problem
At Series A ($2–10M ARR, typically), most companies have:
- A founder or founding team handling most executive functions informally
- One or two early senior hires who have outgrown their original scope
- Investor expectations for more professional leadership and reporting
- A board that’s asking questions the founders can’t fully answer
The instinct is to hire full-time VPs. The right answer is usually to hire fractional executives in the one or two functions that are most broken or most critical, while building toward full-time hires as you scale. For more on this topic, see our guide on fractional vs full-time executive comparison.
Which Functions to Prioritize at Series A
Finance (CFO). The most common first fractional hire at Series A. Investors want clean financials, a credible financial model, and a CFO who can present at board meetings. A fractional CFO at $8,000–12,000/month delivers all of this for less than a full-time hire’s salary overhead.
Marketing (CMO). If you’ve been running founder-led growth and are now trying to build a repeatable demand generation engine, a fractional CMO can build the function, hire the team, and implement the strategy — then transition to a full-time hire once the machine is running. For more on this topic, see our guide on fractional CFO.
Operations (COO). As you scale headcount and complexity, operational leadership becomes critical. A fractional COO is useful when you’re adding people faster than your processes can accommodate, or when your founding team is spending too much time on operational firefighting rather than product and customer work.
The Series B Evolution
At Series B ($10–30M ARR, typically), the calculus shifts. You have more capital, more complexity, and investors who expect professional executive leadership. The transition from fractional to full-time usually happens function by function as the company grows. For more on this topic, see our guide on hiring a fractional CTO.
The sequencing that typically works:
- Finance: Keep fractional through Series A; transition to full-time VP Finance or CFO at Series B or when you’re 12–18 months from a liquidity event
- Marketing: Transition to full-time when you have enough marketing headcount (5+ people) that the leadership overhead justifies full-time
- Operations: Transition to full-time when operational complexity requires daily leadership rather than weekly strategic guidance
The transition signal isn’t headcount — it’s when the leadership overhead of a function exceeds what fractional hours can support.
Making the Case to Your Board
Boards and investors are generally supportive of fractional executive arrangements at Series A. At Series B, some investors start expecting full-time leadership in key functions. If your board is pushing for full-time hires before you’re ready, the right response is a transition plan: “We’re using a fractional CFO now. Our plan is to convert to a full-time VP Finance hire when we hit $15M ARR or raise our Series C, whichever comes first.” A clear plan with a trigger is more credible than either premature full-time hiring or indefinite fractional arrangements.
Frequently Asked Questions
Can a fractional executive help us recruit their full-time replacement?
Yes, and this is often the best outcome. A fractional executive who has been embedded in your business for 12 months knows your culture, your needs, and the standards the role requires. Many fractional executives actively help their clients recruit full-time successors. Establish this expectation early.
Should we tell candidates we currently have a fractional executive in the role?
Yes. It’s relevant context for candidates and they’ll find out anyway. Frame it correctly: “We’ve been using a fractional CFO to build the function and set the foundation. We’re now at the scale where we need a full-time leader to take it further.” This is a strength, not a weakness — it means you have a working function and a foundation to build on, not a greenfield problem.
How long does a typical Series A fractional engagement last before transitioning to full-time?
For finance functions at Series A, 12–18 months is most common. Marketing and operations engagements are often shorter: 6–12 months to build the function, then transition. The timeline is driven by your growth rate and the pace at which operational complexity demands full-time attention.