Pro service

Backend / Custom API

Scalable APIs and services that power your products.

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At a glance

REST & GraphQL API design
Microservices and message queues
Payment, bank and identity integrations
Proven at 1M+ daily transactions

Python
Django
Java
Spring
Node.js
Go

Backend / Custom API

PRO

A great product is only as reliable as the system behind it. We design and build backend services and APIs that are secure, well-documented and ready to scale — from a single REST endpoint to a full microservice architecture.

Our team has delivered backends that handle more than a million daily transactions, integrated with enterprise databases such as Oracle, and connected to dozens of third-party services.

What we do

What's included

API Design & Development

REST and GraphQL APIs with clear contracts, versioning and documentation, so your web, mobile and partner integrations can move fast.

Third Party Integration

Payment gateways, logistics providers, SMS gateways, banking APIs and identity providers such as OpenID Connect — we have integrated them all.

Performance & Scalability

Message queues, caching and horizontal scaling patterns that keep your system responsive as your traffic grows.

Python / Django, Java / Spring, Node.js
PostgreSQL, MySQL, Oracle
RabbitMQ and background job processing

Deliverables

What you get

API contract and documentation (OpenAPI)
Service and database architecture
Authentication, authorization and audit logs
Integrations with payment, logistics, SMS and banking providers
Load testing, monitoring and runbooks

Technology

Tools we work with

We choose proven, well-supported technology that fits your product and your team — never the other way around.

Python
Django
Java
Spring
Node.js
Go
Rust
PostgreSQL
Oracle
RabbitMQ

Process

How we work

A simple, transparent process that keeps you in control from the first call to long after launch.

01
Discover
We learn your business, users and constraints, then agree on scope, priorities and success metrics.
02
Design
Architecture, UX flows and a clickable prototype, so you see the product before we build it.
03
Build
Weekly sprints with demos, code reviews and automated tests. You always see progress in Jira and Slack.
04
Launch & Support
Production deployment, monitoring and handover, then support and new features as you grow.

Case study · Finance · Pension Funds

Pension Fund Platform for DSS

An enterprise platform to manage pension funds for financial institutions — accurate calculations aligned with OJK standards, Oracle integration and capacity for more than a million transactions a day.

Read the case study

FAQ

Backend / Custom API FAQ

Can't find your answer? Talk to us — we are happy to help.

Which languages do you use for backend work?

We pick what fits the job: Python/Django and Node.js for fast product work, Java/Spring for enterprise systems, and Go or Rust for high-performance services.

Can you integrate with our existing systems?

Yes. We have integrated with Oracle databases, Indonesian banks, payment gateways, logistics providers and OpenID Connect identity providers.

How do you make sure the API scales?

We design for load from day one with caching, queues and horizontal scaling, and we load-test before launch.