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Backend & API Development Services

We provide backend and API development services for companies building scalable systems and data-driven products. Our work focuses on reliability, clear architecture, and backend systems that remain stable as usage, features, and teams grow.

This service covers backend systems where data, business logic, and integrations are the foundation of the product.

What we build

Our backend and API development services typically include:

Application backends

Business logic, data models, and services that power web, mobile, and internal products.

Public & private APIs

Well-structured APIs for frontend applications, integrations, and partner systems.

Authentication & authorization systems

Secure access control, roles, permissions, and identity flows.

Integrations & data flows

Connecting third-party services, internal systems, and external platforms.

Our approach to backend engineering

We design backend systems before writing code.

Architecture decisions come first — implementation follows.

Clear domain and data modelling

We define data structures, business logic, and system boundaries upfront — not during implementation.

APIs designed around real usage patterns

API design follows actual usage patterns and client needs, not theoretical ideals.

Separation of concerns for long-term maintainability

Clear boundaries between services, layers, and responsibilities to keep systems understandable.

Error handling, logging, and monitoring built in

Observability and error handling are built into the architecture from the start, not added later.

This prevents fragile systems that break as features and teams grow.

Built for reliability and change

Backends must handle change without becoming unstable.

predictable performance under load
backward-compatible API evolution
safe deployments and rollbacks
clean boundaries between services

This reduces operational risk and keeps systems maintainable as requirements change.

This allows products to evolve without constant firefighting.

Technology & stack

The stack is chosen to support reliability, observability, and long-term maintainability.

Technologies are selected for stability, performance, and supportability.

Node.js
Java / Spring
REST APIs
Event-driven patterns (when appropriate)
PostgreSQL (relational and transactional systems)
Authentication flows
Token-based access and role systems
Logging, monitoring, alerting
Advantages

When this service is a good fit

Backend and API development services are the right fit when:

01

Your product logic is becoming complex

02

Multiple clients (web, mobile, partners) need to share data

03

Security, permissions, or compliance matter

04

Existing backend systems need restructuring or extension

Outcomes teams typically achieve

Stable APIs that support multiple products

Fewer production incidents and regressions

Faster feature development through clean architecture

Systems that remain understandable as teams grow

How we work

A clear path from idea to production-ready software

Clear scope. Predictable delivery. No surprises.

Define the system
1

Define the system

Domain logic, data models, API contracts, and scope.

Build & integrate
2

Build & integrate

Implementation, integrations, testing, and documentation.

Stabilise & scale
3

Stabilise & scale

Performance tuning, monitoring, and long-term evolution.

FAQ

Frequently asked questions

Yes. We often extend, refactor, or stabilise existing backend systems without disrupting users.

Yes. API contracts and system behaviour are documented to support internal teams and integrations.

You do. All code, repositories, and environments remain fully under your ownership.

Yes. We design backend systems that reliably support multiple clients such as web apps, mobile apps, and external integrations.

Very simple:

Tell us what you're building — we'll help you design, launch, and scale it.

About

H-Studio provides backend and API development services for companies building reliable, scalable systems. We design and implement backend architectures that support complex business logic, integrations, and multiple clients. Our approach focuses on clear domain modelling, usage-driven API design, and built-in observability — ensuring backend systems remain stable as products and teams grow.

Backend & API Development Services for Scalable Systems | H-Studio