San Francisco · B2B mid-market

Fractional CTO San Francisco — senior technical leadership and architecture for operators here.

Treetop works with B2B mid-market companies in San Francisco and across California. If you're a founder or CEO between $1M and $30M ARR considering a fractional CTO, here's the San Francisco-specific context and engagement model.

Short answer

Treetop offers fractional CTO services in San Francisco, CA. Engagements run $10K-$25K/month for B2B companies needing senior technical leadership and architecture without a full-time hire. Remote-first with quarterly in-person on-site for San Francisco clients when scope warrants.

San Francisco's B2B market context

San Francisco's B2B ecosystem in 2026 is centered around B2B SaaS, fintech, AI/ML startups, biotech tools, developer tools, enterprise infrastructure. For fractional CTO engagements specifically, this means:

Buyer rhythm matches the industries above — sales cycles, evaluation patterns, decision-maker profiles vary by sector
Talent market for senior fractional operators is meaningful — you have real options without paying coastal-tier rates
Most B2B buyers in San Francisco want substance over hype — marketing/sales/finance that lands here translates well elsewhere
Pipeline rhythm rewards consistency more than peaks — quarterly cadence beats one-off campaigns

Treetop's San Francisco engagement model

Remote-first with quarterly on-site. Quarterly in-person leadership offsites for San Francisco engagements where scope warrants.
1-2 days per week typical. Fractional means fractional — defined cadence, not always-on.
Builder profile. We ship work; we don't just present strategy.
AI-fluent. Modern fractional CTO work compounds with AI workflows. We bring those.
12-18 month engagements typical for compounding outcomes.

Scope of work typically includes: technical strategy, architecture decisions, engineering team leadership, M&A diligence.

When to consider Treetop specifically

You're a B2B founder/CEO at $1M-$30M ARR.
You're in San Francisco or open to a remote-first engagement with quarterly on-site.
You want senior technical leadership and architecture without a $300K+ full-time hire.
You want a fractional CTO who personally uses AI tooling, not just talks about it.
You can commit $10K-$25K/month for 12-18 months.

FAQ

Do you work with companies in San Francisco?

Yes. Treetop works remotely with B2B mid-market clients in San Francisco and across California. In-person quarterly on-site available for San Francisco-based clients when scope warrants.

Are you based in San Francisco?

Treetop is based in Austin, TX. We work with clients across the US remotely with in-person quarterly on-site when warranted.

What's a typical fractional CTO engagement cost?

$10K-$25K/month depending on time commitment and scope. Typically 12-18 month engagements.

How do I start an engagement?

Book the $1,500 AI Audit as a low-commitment first engagement, or schedule a call directly.