Fractional CTO · San Francisco

Fractional CTO
in San Francisco

Senior technical leadership without the $300K base.

We embed as fractional CTO for founders in San Francisco who need senior technical leadership but aren't ready for a full-time hire. Architecture decisions, hiring rubrics, code review for your existing team, and hands-on execution when something needs to ship today.

Get a Fractional CTO quote San Francisco overview

Engagement shape

From

$4,000

Flat price, quoted after 30-min call

Timeline

Monthly engagement

First production deploy

1

Senior engineer, named

Day 1

Code in your GitHub

$0

Retainer, equity, lock-in

How this works

One AI-native engineer.
The output of a team.

One senior engineer plus AI agents now ships fractional cto that used to need a four-person team. Same code quality, half the cost, three-week timelines instead of three months. Built for pre-seed to Series A founders in San Francisco who need to ship before the next round closes.

The local read

Why fractional cto is hard in San Francisco

SF founders compete with OpenAI, Anthropic, and every Series B sitting on $200M in dry powder. A senior engineer offer that actually wins here is $400K all-in, plus relocation, plus equity refreshers. At seed stage that's most of the round.

One named engineer with AI agents now does what a four-person team used to. Three-week timelines instead of three months. Flat-price quote in 24 hours after a discovery call. Pacific Time, overlap with your Sand Hill investors and your early customers in the same window. Code in your GitHub from commit one.

Hiring one senior leader here is a ~$310K year-one outlay and a 60–90 day search. Our fractional cto engagement starts at $4,000 with a first deploy in Monthly engagement.

Did you know · San Francisco

Y Combinator has funded over 5,000 startups since 2005. Combined valuation is north of $600B.

Time zone

--:--:--

PT

Pacific Time. You can DM us at 9am and get a response at 9:01am.

Sectors in San Francisco

AI and ML infrastructureDeveloper toolsConsumer appsClimate techFintech

Stack we use

ArchitectureHiringCode ReviewRoadmapInfrastructureAI Strategy

What you actually get

Concrete deliverables.
Live in Monthly engagement.

No discovery phase that bills for itself. No Figma-only delivery. Every item below is something you can open, click, and ship to a user.

01

Weekly 1:1 with founder, monthly board-style technical update

02

Architecture decisions documented as RFCs, not as Slack threads that disappear

03

Hiring scorecards, take-home rubrics, final-round technical interviews run by us

04

Code review on your team's PRs — fewer regressions, faster reviewer cycle

05

Optional hands-on weeks when a critical build is behind

Why us

Why founders in San Francisco pick us for this

01

We've been the technical owner on 50+ products — the failure modes are pattern-recognized, not theorized

02

Hands-on when you need it: not just a strategy deck, the senior engineer still ships code

03

No equity ask, no notice-period games — month-to-month

04

Cheaper than the recruiter fee on a single bad CTO hire

Fractional CTO we've shipped

Founders we shipped fractional cto with

Real founders, real product, real testimonials. The kind of fractional cto work we'd do for you in San Francisco.

AI Tool · 2025

Irresistible Bot

The platform combines structured onboarding, intelligent prompts, and brand-specific logic to ensure every output is grounded in real context. The more details users provide, the better and more accurate the results become. This allows the AI to act as a true copy coach, not just a writing tool.

Visit the product

“I came to the team with a clear vision of what I wanted to build -- a coach bot that could truly reflect my voice, my methodology, and my years of experience in copywriting and coaching. Start Matter helped turn that vision into a real product, handling everything from the technical foundation to the branding elements like the logo and overall experience. What stood out most was how thoughtful and collaborative the process felt. The team asked the right questions, took the time to understand my brand, and helped structure the system in a way that makes the bot both powerful and easy for clients to use. It never felt generic -- it felt tailored to me and my audience. They also helped shape the onboarding and content flow, making sure the questions and prompts guide users to give meaningful input, so the results are genuinely useful and aligned with the message: "Let's Create Irresistible Copy Together." Start Matter didn't just build a tool -- they helped me bring my coaching approach into a scalable, digital format. I'm truly grateful for their care, clarity, and commitment, and I would absolutely recommend them to anyone building an AI-powered product rooted in real expertise.”

Vrinda Normand

CEO at Irresistible Online Marketing, Inc.

Deeper reads

More on fractional cto from our blog

Same engagement model, written up long-form — pricing tiers, workflows, anti-patterns.

2026-05-23·8 mins

MVP Cost in 2026: Real Numbers From $5K to $50K

Five tiers, what each one ships, where the price comes from, and the work we won't take at the bottom of the range.

Read on the blog

2026-05-09·11 mins

How We Use Claude Code in Production: Workflows, Costs, Anti-Patterns

30+ production builds with Claude Code as primary tool. What works, what gets people in trouble, exact prompt patterns, monthly bill.

Read on the blog

2026-05-02·9 mins

Hire vs Engage: The 2026 Math With AI Agents

A senior engineer in 2026 costs more (year-1 outlay) and is harder to find (60–90 day pipelines). The decision math everyone uses for this is out of date.

Read on the blog

FAQ

Common questions about fractional cto
in San Francisco

How much of your time do we get?

+

Plans typically range 10–30 hours/month depending on scope. We're not your only commitment, but we set a fixed window every week that's yours — same day, same hours.

Is the price really flat?

+

Yes. After a 30-minute call we send a single number and a scope you can accept or reject. No hourly billing, no change-order games. If we underestimate, we eat it.

Can you hire engineers for us?

+

Yes — full hiring loop: writing the JD, sourcing channels (we have a network), screening, technical take-home design, final-round interview. Most CTOs we've helped hire run their first sprint inside a month of starting.

Will you keep coding if we hire a full CTO later?

+

Happy to. Many founders bring on a full-time CTO and keep us as senior IC for 2–3 months while they ramp. No ego — we'll happily report to whoever you hire.

Who owns the code?

+

You do, from commit one. The repository is created in your GitHub org. Infrastructure is provisioned in your cloud account. We don't host your stack on ours and we don't lock you in.

More questions → /faq/partnership · /faq/team · /faq/scaling

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