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Back-End Development Services

Secure, scalable back‑ends that power your product

From custom Node.js and Express APIs to Firebase and Supabase - we build the databases, APIs and server-side systems your apps run on, and choose the right approach for your stage and budget.

50+
APIs & systems built
99.9%
Uptime delivered
4.9/5
Average rating
Engineers building server-side systems and APIs
server.ts
app.get("/api/orders", auth,
async (req, res) => {
res.json(await db.find());
});
Built with
Node.jsFirebaseSupabase

API response time

45ms↘ 3x faster

Always online99.9% uptime · 24/7
What We Offer

Back-end development - custom-built or backend-as-a-service

Whether you need a fully custom API or a fast, managed backend on Firebase or Supabase, we build the engine that keeps your product fast, safe and always online.

01

Custom API Development

Clean, well-documented REST APIs built with Node.js and Express that your apps and partners can rely on.

  • Node.js & Express.js
  • OpenAPI / Swagger docs
  • Versioning & rate limiting
02

Backend-as-a-Service

Launch faster on Firebase or Supabase - managed auth, databases, storage and real-time sync without running servers.

  • Firebase & Supabase setup
  • Cloud Functions & Edge Functions
  • Security rules & row-level security
03

Database Design & Architecture

Well-structured SQL and NoSQL databases designed for speed, data integrity and growth.

  • MongoDB, PostgreSQL & MySQL
  • Prisma ORM & migrations
  • Indexing & query tuning
04

Authentication & Security

Protect your users and data with industry-standard security from day one.

  • JWT, OAuth & social sign-in
  • Role-based access control
  • Encryption & OWASP practices
05

Real-Time Features

Live chat, notifications and data that updates instantly across every device.

  • Realtime databases & listeners
  • Push notifications
  • WebSockets & live updates
06

Deployment & Monitoring

Automated deployments and full visibility into every request, so issues are caught early.

  • CI/CD pipelines
  • Caching & background jobs
  • Logging & alerting
Our Process

How we build back-ends that scale

Six clear steps from architecture to launch - with weekly demos and full visibility into every endpoint we ship.

01
Step 01 of 062-4 days

Discovery & Architecture

We map your business logic, data flows and integrations, then recommend a custom Node.js backend, Firebase or Supabase - whichever fits your product, timeline and budget.

What we do

  • Requirements & data mapping
  • Custom vs BaaS recommendation
  • Sprint roadmap & estimates

Deliverables

Tech specArchitecture planSprint plan
Tools & Technologies

The stack we build back-ends with

Custom Node.js backends and managed backend-as-a-service platforms - whichever fits your product best.

Custom Backend

3 tools
  • NoNode.jsJavaScript runtime
  • ExExpress.jsFast, minimal API framework
  • PrPrisma ORMType-safe database access

Databases

4 tools
  • MgMongoDBNoSQL document store
  • PgPostgreSQLRelational database
  • MyMySQLProven relational database
  • DBDatabase ArchitectureSchemas built to scale

Backend-as-a-Service

2 tools
  • FbFirebaseAuth, Firestore & Functions
  • SbSupabasePostgres, auth & storage

Why XORQ

Why teams choose XORQ for back-end

50+
APIs delivered
99.9%
Uptime
<100ms
Avg. API response
24h
Response time
FAQs

Questions about our back-end development service

For custom backends we use Node.js and Express.js with MongoDB, PostgreSQL or MySQL and Prisma ORM. For managed backends we build on Firebase and Supabase. We choose the best fit for your product, team and scale.