Live in weeks.
Scale for years.
An MVP should prove your idea fast — without becoming the thing you throw away the moment it works. We bring product strategy and lean, in-house engineering, so you launch quickly on foundations that scale when you do.
3 weeks
to your first usable build
< £50
a month to run, pre-scale
Two ways an MVP build goes wrong
Too much
Months and budget on features no user asked for, before you've learned anything.
Too disposable
A throwaway prototype that buckles when real users arrive, forcing a rebuild exactly when you can least afford the downtime.
We build the smallest robust product that actually proves your idea — no wasted scope, no rebuild the day it works.
Decide first. Build second.
We handle the complexity so you can focus on growth — and at every stage, we're making deliberate calls about what to build now and what can wait.
- STEP 1
Discover
We dig into your goals and users, then hand you a phased, itemised scope of work — yours to keep, and detailed enough to build from whether you bring it back to us or take it elsewhere. You'll see what to build now, what can wait, and why.
- STEP 2
Design
We shape the experience through wireframes and UI. Already have designs? We work straight from them.
- STEP 3
Develop
Our proven platform handles the foundations — authentication, payments, notifications, user management — so your budget lands on what's genuinely yours, not the plumbing.
- STEP 4
Distribute
We get your product into real users' hands — first a controlled beta, then a staged rollout to full launch. Hosting, infrastructure, monitoring and live stability are handled, so launch day is calm, not chaotic.
- STEP 5
Drive
Going live is just the beginning — we support, optimise and evolve as you grow.
Strategy and engineering, one team.
Scoping that cuts
In discovery we separate what proves your idea from what pads the roadmap. Phased, itemised plan with deferral decisions made explicit.
A foundation, not a façade
Authentication, payments, notifications, user management come from our platform — hardened in production across live client products, so you don't pay to rebuild them.
Custom where it counts
We start from battle-tested templates and customise as far as you need — no drag-and-drop ceilings. Logic, design and integrations, fully yours.
A partner, not just hands
Senior product and engineering judgement throughout — we help decide what to build, what to cut, and what can wait, not just take the spec.
We don't stop at launch
We stay on to support, scale and evolve the product as you grow.
Yours to keep
All custom code and data is your IP. Bring in other developers or take it in-house whenever you want. Several clients have.
The S16 Platform brings production-grade foundations out of the box, S16 Developer automates the repetitive build, and we build only what matters — with an engineer accountable for every line.
For one of DeepFathom's clients, we took a new product from brief to live in two weeks.
Built lean, scaled for real
£2.5M+ processed
End-to-end contract and payment platform for the advertising industry, processing over £2.5 million in transactions in its first twelve months.
100% Lighthouse
Pet marketplace rebuilt from an early PHP prototype to a 100% Lighthouse-scoring Next.js platform with AI-powered listing moderation.
Agentic Engineering.
Built by humans.
AI is in every step of how we build — but a human engineer reviews, tests and owns every line that ships. That's the difference between a prototype that demos well and software you can run a business on.
Spec, with a second opinion
A product manager shapes the requirements with you; an engineer turns them into a technical spec; AI critiques it; the engineer finalises it and sets the architecture.
AI builds the first pass
AI builds the first iteration against that spec, so our engineers start from working code, not a blank page.
Engineers review — and own it
An engineer tests and refines it for security, scale and standards. The pull request is reviewed by AI and a second engineer, who merges it — and owns it. They have to understand it.
The questions founders actually ask
Find the shortest path to launch.
Tell us your idea, and we'll map the leanest route to a launch that lasts.