Backend Development

Your backend, built for performance, security, and reliability.

Backend systems and APIs engineered to handle real traffic, protect your data, and integrate cleanly with the rest of your stack — built to the standard that holds up when your product scales.

Backend Development
BEST FIT FOR

Who This Service Is For

Backend development for applications that need a reliable, scalable server-side foundation.

Applications That Need a Reliable API Layer

Your web or mobile app needs a backend that handles real traffic without degrading
Clean, documented API endpoints your frontend team can depend on
Authentication, authorisation, and data validation done properly from the start
Performance under load isn't negotiable — your users notice when it's slow

Businesses With Complex Data or Integration Requirements

You have multiple systems that need to communicate reliably — CRMs, payment processors, external APIs
Your data model is complex and needs a properly designed schema to stay maintainable
Real-time processing or event-driven architecture is part of your technical requirements
Compliance, security, and data handling standards apply to what you're building
PROBLEMS WE SOLVE

Problems We Solve

The backend failures that bring engineering teams and product owners to Vantagon.

APIs That Break Under Load

Backend systems that perform well in testing but fail, time out, or return errors when real traffic hits at scale.

Security Vulnerabilities in Critical Systems

Missing authentication checks, exposed endpoints, unvalidated inputs, or insecure data handling creating real risk in production.

Integration Failures With Third-Party Services

Unreliable connections to payment processors, CRMs, or external APIs that break silently or fail under load — hard to debug and harder to explain to customers.

Database Performance Degrading Over Time

Queries that were fast with small datasets slowing dramatically as data grows — missing indexes, unoptimised schemas, and N+1 problems that compound over time.

Technical Debt From a Rushed First Build

A backend built to get to market quickly that's now fragile, hard to extend, and costing more in maintenance than it should.

No Observability Into System Behaviour

Systems with no logging, monitoring, or alerting — failures are discovered by users, not caught proactively by your team.

DELIVERABLES

What You Get

Every backend engagement delivers these three groups of outputs.

System Architecture & Data Design

  • System architecture & service boundaries
  • Database schema & data model design
  • API contract definition & versioning

Implementation & Integrations

  • REST or GraphQL API development
  • Authentication & authorisation systems
  • Third-party API & service integrations

Testing, Security & Deployment

  • Unit & integration test coverage
  • Security audit & vulnerability review
  • Production deployment & monitoring setup
OUR APPROACH

How Your Backend Gets Built

Five phases from architecture through to production deployment — designed so your system is reliable from day one.

Step01

Architecture Design

System boundaries, service responsibilities, and data models designed upfront — so your frontend team and integrations know exactly what they're working with.

Step02

API & Schema Design

API contracts and database schema finalised before implementation starts. Changes here are free — changes after your frontend is already built against the API are not.

Step03

Development

Backend services implemented to the agreed architecture with code review at every merge. Test coverage written alongside the feature, not after.

Step04

Testing & Security

Unit tests, integration tests, security scanning, and load testing against realistic traffic scenarios. Vulnerabilities found and fixed before go-live.

Step05

Deployment

Production deployment with environment configuration, secrets management, monitoring, and alerting all set up before the first real request hits your server.

How Your Backend Gets Built

TECH STACK

Technologies We Use

Proven backend technologies chosen for reliability, performance, and long-term maintainability.

Node.jsNode.js
PythonPython
GoGo
JavaJava
TypeScriptTypeScript
E
Express
F
FastAPI
N
NestJS
Spring BootSpring Boot
PostgreSQLPostgreSQL
MongoDBMongoDB
RedisRedis
ElasticsearchElasticsearch
AWSAWS
DockerDocker
KubernetesKubernetes
R
RabbitMQ

Related Case Studies

See how we've delivered results

FinTech Platform Development
300%

TechBank

FinTech Platform Development

Build a modern digital banking platform

300% user growth in 6 months

Healthcare Mobile Application
50%

MediCare

Healthcare Mobile Application

Create a patient management system

50% improvement in patient engagement

E-commerce Platform Redesign
200%

RetailPro

E-commerce Platform Redesign

Migrate legacy system to modern architecture

200% increase in transaction speed

FAQs

Frequently Asked Questions

Find answers to common questions about our services, process, and how we can help your business.

REST for most APIs — simpler, widely understood, and the right default. GraphQL where client data requirements are complex enough to justify it. We don't choose based on trend.

You’ve Seen What We Build. Now Let’s Build Yours.

Describe the project — what it needs to do, what your business needs from it. You get a clear scope, a fixed price, and a delivery date before you commit to anything.

+1 (555) 123-4567hello@vantagon.io