Axenity
Backend & API Development

Robust, scalable systems that power modern applications

We design backend systems and APIs that stay fast under real traffic, integrate cleanly with the tools your product depends on, and remain easy to evolve as your platform grows.

  • High-performance APIs
  • Scalable architecture
  • Secure integrations
Build Your Backend
What we build

Backend systems built around the way your product runs

From single-purpose APIs to distributed services, we shape the backend around your product, not a template.

  • REST APIs
  • Microservices
  • Authentication Systems
  • Payment Integrations
  • Data Pipelines
Architecture

Designed for scale. Built for reliability.

We design backend architectures around clear service boundaries, predictable data flow, and operational stability. The result is a platform that handles growth in traffic and complexity without forcing the team to rebuild every few quarters.

  • Service boundaries that fit the product, not the framework
  • Cleaner data flow and observability from day one
  • Operational decisions made with growth in mind
Request flow200 OK
01

Client

Web app · Mobile app

02

API

Gateway · Routing · Auth

03

Services

Business logic · Workers

04

DB

PostgreSQL · MongoDB

Throughput+24%
Integrations

Wired into the tools you already run on

Backends rarely stand alone. We integrate with the databases, payment processors, auth providers, message queues, and observability tooling your team already trusts — and pick the right one when you're starting fresh.

Data & storage

  • PostgreSQL
  • MySQL
  • MongoDB
  • Redis / Upstash
  • Amazon S3 / R2
  • Elasticsearch

Auth & identity

  • Auth0
  • Clerk
  • NextAuth / Auth.js
  • Firebase Auth
  • SAML / SSO
  • OAuth 2.0 · JWT

Payments & billing

  • Stripe
  • PayPal
  • Paddle
  • Square
  • Xero API
  • QuickBooks

Messaging & queues

  • RabbitMQ
  • Kafka
  • AWS SQS / SNS
  • Google Pub/Sub
  • Twilio
  • Resend

Observability

  • Sentry
  • Datadog
  • Grafana + Prometheus
  • OpenTelemetry
  • PagerDuty
  • Better Stack

AI & search

  • OpenAI · Anthropic
  • Cohere
  • Pinecone
  • Weaviate
  • Algolia
  • Meilisearch
Performance

Built to perform under real production conditions

< 200ms

API response

99.9%

Uptime ready

End-to-end

Secure auth flows

Millions

Of requests scale

Capabilities

Engineering capabilities that cover the full backend lifecycle

  • REST & GraphQL APIs
  • Microservices Architecture
  • Authentication & Authorization
  • Payment & Third-party Integrations
  • Database Design & Optimization
  • Cloud Deployment
Development Process

A clear backend delivery flow from design to scale

  1. Step 01

    Design

  2. Step 02

    Develop

  3. Step 03

    Test

  4. Step 04

    Deploy

  5. Step 05

    Scale

Engagement models

Three ways to work with us

Every project needs a different envelope. We'll recommend the one that fits after a short call — the important thing is that the envelope is clear before we start.

Discovery sprint

2–3 weeks

Best when the requirements are still fluid.

  • Data model + API surface written up in one place
  • Non-functional targets: throughput, latency, RPO/RTO
  • Fixed-scope quote for the build phase
  • Runnable proof-of-concept for the highest-risk path
Start with discovery
Most common

Fixed-scope build

4–12 weeks

Best when the scope is defined and you want a fixed price.

  • Production-grade codebase in your Git org, with tests + CI
  • Deployed to a staging environment on day one
  • Weekly stakeholder demos; feature-flagged rollouts
  • 30 days of post-launch bug-fix support included
Scope a build

Retainer

Ongoing, monthly

Best when the backend is live and you want a partner on-hand.

  • Reserved engineering hours per month, roll-over up to 25%
  • Incident response SLA, on-call rotation available
  • Quarterly architecture review + roadmap alignment
  • Direct Slack Connect / Discord / Teams channel
Start a retainer
Technology

Technologies & Infrastructure

We choose the languages, frameworks, and infrastructure that fit your product's scale, team, and operational needs.

Languages

  • Java
  • Node.js

Frameworks

  • Spring Boot
  • Express

Databases

  • PostgreSQL
  • MongoDB

Infrastructure

  • Docker
  • AWS
FAQ

Answers before you ask

The six questions we hear most often. If yours isn't here, send it over.

  • You do. Every line ships into your Git organisation from day one, licensed to you outright — no royalty, no rug-pull. Any third-party dependencies are permissively licensed (MIT / Apache-2.0 / BSD); we call out anything else before we introduce it.

Let's Talk

Build your backend the right way

Secure, scalable, and ready for growth.

Start Your Project