Fractional CTO Services in San Francisco
The best Fractional CTO Services in San Francisco, at the best available price.
You have engineers, or contractors, or an agency, and no one whose job is to decide whether the architecture, the spend and the hiring plan are right. That is the gap: ten to twenty hours a month from someone who has built and run the thing you are building, and who will tell you when you are about to spend money you do not need to.
San Francisco has the densest concentration of AI companies and venture money anywhere, which cuts both ways: the talent is excellent and almost all of it is already spoken for. Seed-stage teams compete with the largest labs for every senior engineer, so many ship their first product with outside help and hire once the product has shown what kind of engineer it needs.
Non-technical founders in San Francisco are often told to find a technical cofounder first. A fractional CTO is the other route: someone senior who makes the architecture and hiring calls now, and helps you hire the full-time CTO when the company can afford one.
What you get
- Architecture decisions made and written down, with the trade-offs stated rather than assumed
- Infrastructure and AI spend reviewed against what you actually use, not what you provisioned
- Hiring: what roles you need next, what to test for, and which hires to delay
- A technical voice in investor and customer conversations when you need one
- Honest counsel on build versus buy, including when the answer is to buy
Scoped to the hours you actually need. Month to month, with no long lock-in, because a fractional CTO you cannot leave is just an expensive employee.
Invoiced in USD, payable by Wise or bank transfer.
Request a callback
You speak to the engineer who does the work. No sales rep, no deck.
Who builds here
AI Product & MVP Development
The usual San Francisco situation is a funded founder who needs a working product in front of users before the next raise, and cannot wait four months to hire a team to build it.
What San Francisco companies build with us
Get it built at $0.
That is not a discount. It is when you pay. The work is split into checkpoints with acceptance criteria written down before anything starts, and each checkpoint is invoiced only after you have seen it and accepted it. No deposit.
- $0 to start
- You hold every dollar until a checkpoint is delivered and you accept it. No approval, no invoice.
- Fixed cost, unlimited features
- Or hire the team outright: one fixed monthly cost, unlimited feature development, any stack.
- The engineer takes your call
- The person on your first call is the one who architects and writes it. No account managers, no bench time.
A US agency quotes $50,000 to $150,000 for the same build and asks for 40 to 50% of it before a line is written. Account managers, project managers, sales commission and bench time. None of it appears in your product.
Three stages, nothing hidden.
Twenty-minute call
We work out whether you need a fractional CTO at all. Plenty of teams need one good senior engineer instead, and that is a cheaper answer worth hearing.
First month, diagnostic
Architecture, infrastructure spend, delivery process and team shape reviewed, with the findings written down plainly and prioritised by what they cost you.
Ongoing retainer
A fixed block of hours each month. Regular reviews, decisions when they are needed, and direct access rather than a ticket queue.
What actually applies here.
Regulation and data
California's privacy law, the CCPA as amended by the CPRA, is enforced by a dedicated agency, the California Privacy Protection Agency, and applies to businesses above its revenue or data thresholds wherever they are based. The agency's rules on risk assessments and automated decision-making technology add obligations that phase in over the next few years. If your product makes significant decisions about people, plan for opt-out and access requests from the start rather than after the first enterprise customer asks.
Contracting and payment
You contract with an individual consultant based in India rather than a US entity. Invoices are issued in USD and paid by Wise or bank transfer, with no payroll and no benefits load on your side. Whatever documentation your finance team or counsel needs from an overseas contractor is provided before work starts.
Working hours
Calls in your morning, Pacific time, and work handed over at the end of your day so the next round of changes is waiting when you start.
Is it a problem that you are not in the Bay Area?
Not for the work itself. You get calls in your morning Pacific time and work handed over at the end of your day, so the next round of changes is waiting when you start. Everything lives in your repository and your accounts.
Can you help us get ready for technical due diligence before a raise?
Yes. That usually means tightening security basics, documenting the architecture and making sure more than one person can deploy. It fits naturally into a fractional CTO or build engagement.
Do we actually need a fractional CTO?
Often not, and you will be told so. If the real problem is that nobody is building fast enough, a senior engineer is a better spend. A fractional CTO earns its cost when the expensive decisions are the bottleneck: architecture, infrastructure spend, build versus buy, and who to hire next.
How is this different from an advisor?
An advisor gives opinions. This role makes decisions, writes them down, and is accountable for them. Where it helps, the work is done rather than delegated, including the parts that involve opening the codebase.
What happens to our existing team?
They keep building. The role is to remove the decisions that block them and to be honest with you about where the team is short, which is usually a smaller gap than founders fear.
Fractional CTO
Senior technical leadership, 10-20 hrs/month: architecture, AI strategy, cost control.