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Engineering studio · Leeds
We build production SaaS — the systems your team logs into, the systems your customers pay for, the systems a security reviewer cannot pull apart in an afternoon. Without the apparatus that makes most agency engagements feel like a tax.
What we build
Three shapes of engagement. Different domain, same foundation. The wizards below take five minutes; if your project is a fit, the proposal lands within 48 hours.
Booking platforms, client portals, marketplaces, content sites with real teeth. Auth, payments, dashboards, the lot — built so a security reviewer cannot pull it apart in an afternoon.
The system your customers pay for. Subscriptions, billing, per-tenant data isolation, role-based access, audit trail, search — the foundation already built when the engagement begins.
Not a chatbot demo. A system that categorises, summarises, routes, drafts — inside your business, with structured data, fallbacks, and observability. Where AI earns its keep.
Not sure which shape your project is? Tell us about it → one call, honest answer.
Full stack · No subcontracting
Every layer of the build is handled by the people on the call. No white-labelling, no overseas subcontractor, no surprise third-party at handover.
Layer 01
Visual identity, custom UI components designed for your domain, WCAG-AA accessibility, SEO baseline. Mobile-first, responsive across every viewport.
Layer 02
Auth, data model, payments, search, AI features, file uploads, audit. Eighteen security patterns enforced by default — the list a security review asks for, already there.
Layer 03
Vercel + Supabase by default; self-host on your own infrastructure if you prefer. Your account, your domains, your keys, your backups. Plain stack, clear handover.
Layer 04
Structured logging, error reporting, uptime monitoring, automatic database backups. Optional retainer for security patches, dependency updates, and continued development after launch.
What you get
What changes between projects is the part that should change. Your domain. Your customers. Your business logic. Everything else is already correct.
01
Sign-up, sessions, roles, organisations. Per-row security enforced at the database — not in the page that renders the list.
02
A custom data model for your business and a content system your team can run without a developer.
03
Subscriptions, one-offs, or both — wired to a real provider. Real webhooks, real dunning, real receipts.
04
Full-text search with relevance ranking and fuzzy matching, indexed at the database layer. Holds up under load.
05
Where AI earns its keep — generated copy, imagery, categorisation. Always with a fallback. Nothing breaks if the provider is down.
06
Eighteen patterns enforced by default — auth on every action, input validation everywhere, rate limits, CSP nonces, SSRF guards.
Full inventory: services →
How we work
We document the load-bearing pieces, the failure modes, and the assumptions you have outgrown. No decks. No workshops. One scoping call, then a written brief.
Two weeks
We design the system around the invariants — the data model, the security boundary, the integration points. By the end you have a schema, an API surface, and a build plan.
Two weeks
We build, test, and ship. Everything in the inventory above is live by the end. The codebase is yours, on your domains, with your keys.
Eight to twelve weeks
Why us
✕ The traditional agency
Charges you to rebuild the foundation every project and calls the rebuild discovery. The senior engineer pitches. The junior writes the code.
Three sprints, wrong direction.
✕ AI-assisted coding
Will produce something that runs. Will also miss authorisation, rate limiting, audit trails, migrations, idempotency, and a test suite that means anything.
The demo passes. The first real customer breaks it.
Canarlo
The foundation is settled before kickoff. The people on the call are the people writing the code. Your money funds the part that is yours.
A system designed so the wrong thing cannot easily happen.
Studio principle
We treat invariants as load-bearing.
Auth on every action. Validation on every input. Per-row security enforced at the database. The patterns are named, the patterns are tested, the patterns are why a production system survives a security review and a Tuesday morning at 9 a.m.
Talk to us
Tell us what you are trying to ship, what you have already tried, and what is in the way. If the work is a fit, we will say so on the call. If not, we will tell you who to talk to instead.