Convex development at ZeroPixel
Convex is a new kind of backend: a reactive database where queries are TypeScript functions and every connected screen updates automatically when data changes. No cache invalidation, no polling, no websocket plumbing — the platform handles the hardest parts of realtime software so the product code stays simple.
ZeroPixel is one of the few UK agencies with Convex in production — the enquiry system on this very website runs on it. That matters because Convex rewards being used idiomatically: its function model, optimistic updates and scheduler are genuinely different from a REST-and-Postgres world, and code written 'the old way' on Convex fights the platform instead of benefiting from it.
Where Convex shines: products where the screen should always be live. Dashboards, collaborative tools, operations boards, chat, anything multi-user. Combined with Next.js and TypeScript end to end, it produces software with a startling property — entire categories of synchronisation bugs simply can't be written.
What we build on Convex
Convex fits products where 'refresh to see changes' isn't acceptable — these four shapes make the most of it.
Collaborative tools
Multi-user boards, editors and workspaces where everyone sees everyone's changes instantly — the hard part handled by the platform.
Live operations dashboards
Order queues, job boards, fleet views — screens your team keeps open all day that are always current without a refresh.
Realtime SaaS products
Full products with accounts, teams and billing where live data is the feature — built end-to-end in TypeScript.
AI-powered applications
Chat interfaces, agents and streaming AI features — Convex's reactive model and scheduler fit LLM workloads unusually well.
Why hire ZeroPixel for Convex work
- Production experience, not a tutorial
- We run Convex in production and know its idioms — and its limits. You get architecture that works with the platform's reactive model, not REST habits transplanted onto it.
- Rare expertise, honestly priced
- Convex specialists are scarce; that doesn't make this a premium-priced novelty. Same fixed written quotes as everything else we build.
- The right tool, not the shiny one
- Convex is superb for realtime products and unnecessary for plenty of others. We'll tell you which yours is — Supabase or plain Postgres is sometimes the better answer, and we build on those too.
Convex — common questions
What is Convex and why would my product use it?
Convex is a backend platform where the database pushes changes to every connected user automatically. If your product involves multiple people looking at the same data — a team dashboard, a booking system, a collaborative tool — Convex removes the entire category of 'stale screen' problems, along with most of the backend code you'd otherwise pay to have written and maintained.
Is Convex mature enough to build a business on?
Yes, with eyes open. It's a well-funded platform (founded by the team behind Dropbox's infrastructure) running plenty of production workloads, and your functions are plain TypeScript with your data exportable. It's younger than Postgres — that's the honest trade — but for realtime products the reduction in code you own and bugs you can write is usually worth it. We run it ourselves, which is the strongest endorsement we can give.
Convex or Supabase?
Different strengths. Supabase gives you classic SQL on Postgres — ideal when your product is forms-and-reports shaped or needs complex relational queries. Convex gives you reactivity as a default — ideal when screens must stay live and multiple users touch the same data. We build on both, so the recommendation you get is based on your product, not our preference.
Can you add Convex to an existing product?
Yes — a common pattern is adding a realtime layer (live status, notifications, a collaborative feature) alongside an existing backend, rather than migrating everything. Convex coexists happily with REST APIs and other databases, so we can scope the realtime part to where it pays off.
What does a Convex project cost?
In the same range as our other product work: focused realtime features are four-figure projects, complete products are quoted on scope — fixed and in writing either way. Convex's pricing scales with usage and starts free, and because it replaces so much backend code, total build cost is often lower than the traditional equivalent.
Beyond Convex
A stack is a set of choices that have to work together — these are the pieces we most often pair with Convex, and where we do it.
Building with Convex?
Tell us what you're making — we'll reply within one working day with an honest take and a fixed quote.