Custom API Development

APIs Built to Last

REST and GraphQL services with the boring parts done right: auth, versioning, docs, and observability.

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Overview

Built Right, From the Start

Secure, documented, versioned APIs and integrations.

What we’re good at

  • REST & GraphQL done right: Consistent resource design, pagination, filtering, and errors developers can predict.
  • Auth & security first: OAuth2/JWT, rate limiting, and input validation designed in, not bolted on.
  • Versioning strategy: Breaking changes managed so your integrators never wake up to a broken app.
  • Documentation that works: OpenAPI specs and interactive docs your partners can integrate against in hours.
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What You Get

Engineered For Outcomes

Every capability that goes into your project, done properly.

REST & GraphQL done right

Consistent resource design, pagination, filtering, and errors developers can predict.

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Auth & security first

OAuth2/JWT, rate limiting, and input validation designed in, not bolted on.

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Versioning strategy

Breaking changes managed so your integrators never wake up to a broken app.

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Documentation that works

OpenAPI specs and interactive docs your partners can integrate against in hours.

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Observability built in

Logging, tracing, and alerting so you know about problems before your users do.

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Third-party integrations

Payments, shipping, ERPs: we connect your systems to the world.

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Why Coding Souls

Built On Trust

01

End-to-End Expertise

Strategy, design, engineering, and support under one senior team.

02

Modern Technology

A stack chosen for longevity and performance, not hype cycles.

03

Scalable & Secure

Architecture built to grow with you, hardened from day one.

04

Transparent Process

Weekly demos, honest estimates, and zero surprises at handover.

Toolbox

Stack & Deliverables

The technology we use, and exactly what lands in your hands at the end.

Technologies

Node.js
Python
GraphQL
PostgreSQL
Redis
Docker
AAWS API Gateway

Deliverables

  • Production API with tests
  • OpenAPI documentation
  • Auth & rate-limit setup
  • Monitoring & alerting
How We Work

Our Process

Four stages, weekly demos, honest estimates. You always know where your product stands.

  1. 01

    Discover

    We map your goals, users, and constraints, and kill risky assumptions before they cost money.

  2. 02

    Design

    Wireframes to polished UI in tight loops, validated with you at every iteration.

  3. 03

    Build

    Senior engineers ship in weekly increments with demos, tests, and honest status.

  4. 04

    Launch & Grow

    Zero-drama deployment, then analytics, iteration, and support that compounds.

FAQ

Frequently Asked Questions

Straight answers on pricing, timelines, ownership, and what happens after launch.

Yes. API rescue is common work. We inventory endpoints, add tests around current behavior, generate OpenAPI docs, then refactor safely behind that safety net.

REST for public/partner APIs and simple domains; GraphQL when many clients need flexible views of complex data. We’ll recommend based on your consumers, not fashion.

Book a free consultation from the contact page. We’ll scope the work, give you a written estimate with assumptions, and you decide from there, with no pressure, no lock-in.

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Ready to Build Your Custom API Development

Tell us about your project below, or explore what else we build.

Have an idea? Let’s engineer it.

Free consultation, transparent estimates, and a team that ships.