You need ships in the water and someone who can read the chart. The mistake is hiring a title when you needed output, or hiring builders when you needed architecture ownership.
Fractional CTO — what you are buying
A fractional CTO (or VP Engineering advisor) typically provides:
- Architecture decisions and technical roadmap
- Hiring bar, interview loops, and team structure
- Vendor selection (cloud, auth, analytics)
- Board/investor technical narrative
- Risk reviews (security, compliance, scale)
They may not ship 30 story points per sprint — and that is fine.
Best when:
- You have engineers (or agencies) but lack senior technical leadership
- You are fundraising and need credible systems thinking
- You are about to make irreversible infra choices
Dev agency / dev subscription — what you are buying
An execution partner (like Brimode’s model) provides:
- Production code in defined sprints
- Design-to-deployment for MVPs and features
- Specialized stacks (Next.js, Shopify, AI, automation)
Best when:
- The roadmap is clear enough to slice into deliverables
- Calendar time matters more than org design
- You want senior ICs without full-time payroll
Side-by-side
| Question | Fractional CTO | Dev agency |
|---|---|---|
| Who writes most code? | Usually not them | Agency |
| Who owns hiring? | CTO | You + CTO |
| Who answers “build vs buy”? | CTO | Should align with CTO |
| Fastest path to demo | Agency | Agency |
| Long-term team building | CTO | Agency + CTO |
The combined model (healthy)
Many seed-stage companies run:
- Fractional CTO 4–8 hours/week for architecture and reviews
- Dev subscription for parallel feature streams
- First full-time hire when bus factor and domain depth demand it
Overlap is wasteful; gaps are expensive. Write RACI: who approves schema changes, who owns on-call, who talks to customers about bugs.
Red flags
- CTO who never looks at production metrics
- Agency that will not work in your repo or hand off cleanly
- Either side discouraging documentation
Economics
Compare packages using dev subscription vs hire math — leadership and execution line items should be separate budgets.
Consultation before you sign
If you are unsure which gap hurts more, book a consultation — we will tell you if you need leadership, builders, or both (and we are fine if the answer is not us).
Related: Scope an MVP in two weeks · Technical due diligence
Further reading
- Hiring full-time vs. a dev subscription: the real numbers founders should model
A straightforward comparison of cash, speed, and risk — when a senior subscription beats a salary, and when you should still hire in-house.
- How to scope an MVP in two weeks (without shipping junk)
A founder-friendly framework to cut an MVP to one measurable outcome, one user path, and one week of buffer — so your first release actually validates the idea.
- Technical due diligence checklist before buying or investing in a SaaS
What to verify in a technical due diligence: codebase health, infra, security, metrics integrity, and team bus factor — for acquirers, investors, and founders selling.
