CTO as a service
CTO-level blockchain engineering without hiring full-time
BitFashioned provides fractional CTO leadership for Web3 companies and funds: senior ownership of architecture, security, hiring, and delivery, backed by a team that writes the code. Use it before you can justify a full-time CTO, or while you search for one.
Who this is for
- Founders and foundations with a protocol or product to ship but no senior blockchain engineer in-house
- Funds and operators that need technical ownership of a portfolio build or a vendor relationship
- Firms establishing in the Cayman Islands that need the technical setup handled end to end
Who this is not for
- Teams that only need a single freelancer for a fixed task
- Companies that want an advisor title without hands-on engineering involvement
What we actually do
Tech strategy
Architecture decisions, chain and stack selection, security posture, and a roadmap that the engineering budget can actually deliver.
Team leadership
Hiring plans, technical interviews, code review standards, and day-to-day leadership of in-house or contracted engineers.
Hands-on engineering
Smart contracts, protocol work, and backend systems built by the same team that sets the direction.
Vendor and audit management
Scoping and reviewing external vendors and security audits so you pay for the right work and can verify it was done.
Proof
Public, verifiable work. Follow the links.
- Critical vulnerability in the Avalanche protocol, responsibly disclosed through the HackenProof bug bounty program
- Incorrect ordering of fees and tips in Substrate's transaction payment module on Polkadot mainnet, disclosed via xx labs foundation
- qVault: open-source quantum-secure vault for EVM wallets (Solidity)
- W-OTS(+) up my Sleeve! Secure Fallback for Wallets (IACR ePrint 2021/872)
- Tweakable Sleeve: A Novel Sleeve Construction (IACR ePrint 2022/888)
- Phoenixx: Linear Consensus with Random Sampling (IACR ePrint 2023/1262)
Networks, institutions, and companies we have worked alongside include the Ethereum Foundation, Polkadot, Avalanche, xx network, BIS, the Inter-American Development Bank, the State of Wyoming, Cayman Enterprise City, Lamina1, Parfin, and ai.moda. Names refer to collaboration, research, or engineering relationships, not endorsement.
How we work
We start with a short assessment of your product, team, and constraints, agree on the decisions we own, then work inside your team's tools and cadence. When you hire a full-time CTO, we hand over the architecture, documentation, and context.
How we compare
- Full-time CTO hire
- Best once the company can support a permanent senior role. Slow to hire well in this market and expensive to get wrong.
- Freelance marketplaces
- Good for filling a specific engineering task. You still own the architecture and the decisions.
- BitFashioned
- Senior ownership of the technical direction plus a team that builds it, without the commitment of a full-time executive hire. You skip the months of sourcing, interviews, and finding the right chemistry, so the roadmap starts moving in weeks instead of waiting on a hire.
Start here
Tell us what you are building, who is on the team today, and what has to ship next. We will tell you quickly if a fractional CTO is the right fit.