Backend Development
APIs and Infra That Don't Break.
Auth, databases, APIs, integrations, billing: the parts of the product nobody sees until they fail. We build them to hold up under real users, not just the demo.
What's included
Infrastructure scoped for the product you're actually building.
Database schema and auth, API architecture, third-party integrations, billing, and real-time infrastructure where the product needs it: notifications, live sync, collaborative state.
This is the same backend work that goes into a full Launch Sprint build, scoped standalone for teams that already have a frontend and need the system behind it rebuilt, hardened, or extended.
We choose Supabase, Firebase, or a custom Node.js layer based on what the product needs, not a default stack. You own the infrastructure and the codebase completely.
How we work
Architecture before code.
Audit
If there's an existing backend, we audit it first: what's solid, what's fragile, what needs to be rebuilt versus extended.
Design
Schema, auth model, and API contracts designed against the actual product requirements: what data exists, who can touch it, how it scales.
Build
Auth, database, API layer, integrations, and billing built and tested against real data flows, not stubbed responses.
Handoff
Infrastructure docs, environment access, and a system your next hire can read without archaeology.
Tech stack
Chosen for the load, not the trend.
Supabase / Postgres
Database + auth
Firebase
Real-time infra
Node.js
API layer
Stripe
Billing
Composio
Third-party integrations
Vercel
Deployment
Who it's for
Three reasons teams call us in for backend.
The frontend works. The backend can't support it.
A UI that's ready to scale, sitting on a database schema or API that was never designed for real load. We rebuild the layer underneath without touching what users already see.
Integrations keep breaking.
Every new CRM, billing tool, or workflow connection was built as its own one-off. We wire integrations through a consistent layer so adding the next one doesn't mean starting from scratch.
A freelancer or offshore team left something that technically runs.
It works, until it doesn't, and nobody who's still around understands why. We audit, stabilize, and document, so the next person who touches it isn't starting blind.
Recent builds
Systems we've shipped.
Mizu AI: Automation Builder Backend
6 weeks, 0 to productionAuth, credential management, workflow state, billing tiers, and credit metering, all built from zero. Five integrations wired through Composio SDK, so each one stayed consistent instead of a one-off.
Read case study →Bounce Daily: EV Rental Infrastructure
100k+ usersFull Firebase integration for auth, real-time database, and push notifications, rebuilt on a legacy codebase that couldn't support real-time validation or loyalty mechanics.
Read case study →FAQ
Common questions.
Can you take over an existing backend?
Yes. We audit the existing codebase and infra first, tell you what's worth keeping, and take it from there.
Do you handle scaling and performance?
Yes. Schema, indexing, caching, and API design scoped for the load you actually expect, not just the demo.
What about data security and compliance?
Auth, role-based access, and data handling built to the compliance bar your product needs.
Can you wire in our billing and third-party tools?
Yes. Stripe for billing, plus CRM, ERP, and workflow integrations through providers like Composio.
Do you build real-time infrastructure?
Yes. Real-time databases, push notifications, live data sync, using Supabase or Firebase depending on the product.
Ready to build?
Tell us what you're building.
We scope it in 24 hours.
20 minutes. No pitch. A clear recommendation on scope, stack, and timeline, and whether this is the right moment to move.