A revenue leader in the seat, not on a slide deck.
Sierra Advisory steps into fractional CRO, VP Sales and Head of Revenue roles for B2B SaaS companies — embedded with your team, owning the number, and building the function while you find or develop a permanent hire.
Fractional Revenue Leadership
What this is
A fractional CRO does the job of a full-time chief revenue officer on a part-time or fixed-term basis. That means owning pipeline, sales strategy, forecasting and team management, sitting in leadership meetings, and being accountable to a revenue target — not delivering a report and leaving.
The usual trigger is founder-led sales running out of road. The founder is still the best closer in the company, pipeline is unpredictable, and the next hire is a €200K+ decision nobody wants to get wrong. A fractional engagement builds the repeatable motion first, so that when you do hire a permanent leader, you are hiring someone to run a working system rather than invent one.
Engagements are deliberately hands-on. We manage reps, sit on calls, rebuild forecasting, and stay accountable for the outcome — including handing over cleanly to the permanent leader when the time comes.
What the engagement covers
- Fractional roles: part-time, senior-level revenue leadership on a monthly basis
- Monthly retainer: ongoing strategic and operational support with defined scope
- 3+ months interim roles: full fractional engagement, embedded with your team
Right for you if: “You've outgrown founder-led sales but aren't ready, or it's too early, to hire a full-time CRO.”
How it’s engaged
Retainer
Ongoing strategic and operational support. Defined scope, regular cadence, accountable to outcomes. Most strategy and people engagements run on this model.
Interim
We operate as a member of your leadership team. Own delivery, attend board calls, manage the team. Used for fractional CRO and VP Sales engagements.
Evidence
Zebra BI — revenue organisation transformation
Net New ARR Growth
Total NRR
New Logos
Zebra BI is a bootstrapped B2B SaaS company with proven product-market fit and a growing customer base, but its revenue organisation had never been properly unified. Sales, customer success, and pre-sales each operated to their own priorities, creating a fragmented GTM motion that capped growth and made pipeline unpredictable.
Common questions
About fractional revenue leadership
What does a fractional CRO do for a SaaS company?
A fractional CRO provides senior revenue leadership, owning pipeline, sales strategy, team management, and go-to-market execution, on a part-time or interim basis. They are embedded in the business like a full-time hire but engaged on a flexible retainer or fixed-term basis, making senior revenue leadership accessible without the full-time overhead.
What is the difference between a fractional CRO and a full-time CRO?
A fractional CRO does the same job as a full-time chief revenue officer — owning pipeline, sales strategy, forecasting and team management — but on a part-time or fixed-term basis rather than as a permanent hire. The difference is commitment structure rather than seniority: there is no equity package, no notice period and no lengthy ramp, and the engagement is sized to the problem. A full-time CRO makes sense once the revenue function is large enough to need someone in the building every day. A fractional one makes sense while you are still building toward that, or while you are searching for the permanent hire.
When should a SaaS startup hire a fractional VP Sales?
A fractional VP Sales makes sense when founder-led sales has hit a ceiling and the company is not yet ready, or funded enough, to hire a full-time VP Sales. Typically this happens between $500K and $3M ARR, when a repeatable process needs to be built before bringing on a permanent leader.
How long does a Sierra Advisory engagement last?
Engagements run on three models. A diagnostic is one-time and fixed-scope, delivering a clear diagnosis and a prioritised action plan. A retainer is monthly with a three-month minimum, and covers most strategy and people work. An interim engagement runs three to six months fully embedded, and is the model used for fractional CRO and VP Sales roles. Most relationships start with a diagnostic before moving into one of the longer models.
Other services
GTM Strategy & Optimisation
You're growing but not fast enough, or you've hit a plateau and can't diagnose why.
People & Team Building
You're about to make a senior revenue hire, or you're unsure whether the team you have can get you where you need to go.
Investment & Strategic Advisory
You're raising early capital and want a hands-on GTM investor, not just a check.
Start the conversation
Not sure which engagement fits?
That's what the first call is for. Bring your situation. We'll be direct about what makes sense.