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REST · GraphQL · gRPC · Real-time

API development
that powers modern products.

Public APIs, internal microservices, integrations, real-time event streams. Node.js, Go, Python, Rust — built for throughput, observability and long-term maintainability.

Trusted credentials
OpenAPIGraphQLgRPCSOC 2 Ready
REST
200+
APIs in production
OpenAPI-first
GRAPHQL
25+
Federated graphs
Apollo · Hasura
REALTIME
10M
Events / day
WebSockets · MQTT
By the numbers
200+
APIs shipped
10M+
Requests/day
99.99%
Uptime
API development at Ecarter
Overview

APIs that connect everything.

REST and GraphQL APIs, third-party integrations and middleware — we design the contracts and build the services that let your storefront, apps, ERP and partners talk to each other reliably.

  • REST & GraphQL API design
  • Payment, shipping & ERP integrations
  • Secure, documented & versioned
Capabilities

What we build.

API Development delivered end-to-end — from architecture to deployment to ongoing support.

REST APIs

OpenAPI-first design, versioning, rate limiting, caching, observability.

GraphQL

Schema-first, federation, subscriptions, persisted queries, edge caching.

gRPC services

High-throughput internal microservices with Protocol Buffers.

Real-time

WebSockets, SSE, MQTT for live dashboards, chat, IoT, presence.

Integrations

ERP, CRM, payment gateways, shipping, marketing — 100+ integrations done.

Auth & security

OAuth 2, OIDC, JWT, API keys, rate limiting, WAF, signed requests.

Observability

Structured logs, metrics, distributed tracing, SLOs, alerting.

SDK generation

Auto-generated client SDKs in TS, Python, Go, Swift, Kotlin.

Stack

Tools we master.

Battle-tested across hundreds of projects.

Python
FastAPI, Django REST
40+ APIs
Rust
Actix, Axum
8+ APIs
GraphQL
Apollo, Hasura
25+ APIs
+
Custom
Bespoke stacks
Process

How we deliver.

01
Phase 01
Design
Schema design, contract review, security model
02
Phase 02
Build
Implementation, testing, docs, SDK generation
03
Phase 03
Launch
Deployment, monitoring, rate limiting, SLAs
04
Phase 04
Operate
24/7 monitoring, on-call, scaling, optimization
In practice

Integration, done right.

API architecture and contracts

Clean contracts, clear docs.

Well-designed endpoints, predictable schemas and first-class documentation so your team and partners can build against them with confidence.

Third-party system integrations

Connect any system.

Payment gateways, logistics, CRMs and ERPs — we wire third-party services into a single, dependable integration layer.

Secure and scalable API services

Secure & ready to scale.

Authentication, rate limiting, versioning and monitoring built in — APIs that stay stable as traffic and integrations grow.

FAQ

Frequently asked questions.

Everything you need to know before starting your project.

What types of APIs do you build?

REST and GraphQL APIs, plus middleware and third-party integrations such as payment gateways, logistics, CRM and ERP systems.

Can you integrate my store with my ERP or CRM?

Yes — we build dependable integration layers that connect your commerce platform with back-office systems so data flows automatically in both directions.

How do you keep APIs secure?

Authentication, authorization, rate limiting, input validation, versioning and monitoring are built in by default, and we follow OWASP best practices.

Do you provide API documentation?

Yes — every API ships with clear, versioned documentation so your team and partners can build against it with confidence.

Building an API platform?

From a single endpoint to a federated graph serving billions of requests.