How to work with me
Three ways engagements usually run. Most are hands-on iOS work; the Health Check is the easiest way to start if you are not sure what you need.
Senior iOS engineering
From $175/hourHands-on iOS work, either embedded alongside your team or on a defined piece of work: ship the thing, fix the thing, or get the product out of wherever it is stuck.
- Releases blocked in App Store review
- Codebases the current team did not write and cannot safely change
- Extracting a product from an outside agency or vendor
- Feature delivery in Swift and SwiftUI alongside your existing team
Mobile Health Check
Fixed price · quoted per projectA short, bounded look at what you have, with a written assessment you can act on whether or not you use me to act on it. Send me a few lines about the project and I will come back with a fixed price and timeline, usually within a couple of days. A small app may need a few days; a larger or messier one may need a couple of weeks.
- Architecture and code health, in plain language for non-engineers
- Release process, build pipeline and how long shipping actually takes
- Crash rate, performance, and where the user-facing risk sits
- App Store review and privacy exposure: what would block your next release
- A prioritised plan, and an honest view of whether you need a person or a team
Scope, price and timeline are agreed before I start, so there are no surprises. It needs no headcount decision, and by the end you know exactly what you are dealing with.
Fractional CTO / Head of Mobile
Monthly retainerTwo or three days a week, ongoing. I run mobile for you: direction, quality, releases and people. For companies with a real product and nobody senior owning the mobile side of it.
- Architecture and technical direction
- Release process and the App Store relationship
- Hiring, mentoring and code review for your existing engineers
- A roadmap that reflects what can actually be built
This is how I worked at Wingman and Catnip: fractional, not full-time, and still fully accountable for the outcome.
Practical details
Where I work. Remote, from Bath in the UK. I work UK hours and schedule meetings in the afternoon overlap, which covers a US East Coast morning comfortably; West Coast takes a bit more planning.
Onsite. I do a kickoff in person, and up to two weeks onsite per quarter after that. Holding both US and UK citizenship means none of that carries a visa, sponsorship or paperwork question.
How I invoice. Business to business, from my own UK limited company (Charlie Robert Williams Ltd), in dollars. A US client can engage me directly, with no employer of record. If a 1099 is simpler at your end, that works too.
Where I can help. Most of what comes to me is a product that’s stuck: App Store review, privacy requirements, release engineering, performance, inherited code. I also build from a design straight through to shipping when that’s what’s needed — Catnip was exactly that — so don’t rule me out just because nothing is on fire yet.
Where I bring others in. I have worked extensively with Android and understand the ecosystem, but I am not a native Android developer. I have a strong design sense and enjoy making interfaces that are beautiful, intuitive and functional, but I am not a designer by trade. If what you need is a whole team rather than one person, I will say so early.