Backend development

The engine behind your application

Backend is everything users don’t see. Databases storing your data. Business logic enforcing your rules. Authentication verifying identities. Server infrastructure keeping everything running. It’s invisible to users, but nothing works without it.

We build backends that are reliable, secure, and ready to scale.

What backend includes

Backend development covers everything that runs on the server.

Business logic

The rules that govern your application. What users can do, when they can do it, how data should be processed. This is where your specific workflows and requirements become code. A checkout process, an approval workflow, a calculation engine. The logic that makes your application yours.

Database architecture

How your data is structured, stored, and retrieved. Good database design makes applications fast and reliable. Poor design causes headaches for years. We design databases that handle your current needs and scale as you grow.

User authentication

Secure login, registration, password management, session handling. User roles and permissions that control who can access what. Integration with external auth providers if needed. Security isn’t optional.

Data processing

Import, transform, calculate, export. Scheduled jobs that run overnight. Real-time processing that happens instantly. Whatever your data needs to become useful information.

Server infrastructure

The actual servers that run your application. Configuration, deployment, monitoring, scaling. We handle setup and ongoing management through our maintenance packages.

Our technology stack

We use proven technologies with strong ecosystems and long-term viability.

Node.js (primary)

Node.js is our primary backend technology, used on roughly 80% of projects. It’s JavaScript on the server, which creates natural synergy with modern frontends.

Why Node.js:
  • JavaScript everywhere. Same language on frontend and backend. Easier to share code and knowledge.
  • Excellent performance. Non-blocking I/O handles concurrent requests efficiently.
  • Massive ecosystem. npm has packages for virtually every integration and functionality.
  • Active development. Regular updates, strong community, ongoing improvements.

Best for: Most web applications, real-time features, API-heavy applications, projects with JavaScript frontends.

PHP

For some projects, PHP is the right choice. We use it when circumstances call for it.

When we use PHP:
  • Integration with existing PHP systems
  • WordPress or other PHP-based platforms
  • Client preference or existing team expertise
  • Specific hosting requirements

Databases

We work with multiple database technologies, choosing based on your data needs.

PostgreSQL
Powerful relational database for complex data relationships. ACID compliance, advanced querying, excellent for business applications.

MariaDB
Open-source relational database, MySQL-compatible. Good performance, wide hosting support, solid choice for many applications.

MongoDB
Document database for flexible data structures. Good for rapidly evolving schemas, content management, and applications with varied data shapes.

How we choose: During discovery, we assess your data requirements and recommend the right database. Often it’s PostgreSQL. Sometimes MongoDB makes more sense. We’ll explain why.

What makes good backend

Technical choices aside, good backend development follows proven principles.

Security first

Security isn’t a feature to add later. It’s built into every decision. Input validation, parameterized queries, proper authentication, encrypted sensitive data, secure session handling. We follow OWASP guidelines and industry best practices.

Scalable architecture

Your application might start small, but good architecture handles growth. Database queries that stay fast with more data. Code structure that accommodates new features. Infrastructure that can scale up when needed.

Clean code

Backend code lives for years. Developers will maintain it long after it’s built. We write code that’s readable, documented, and organized. Clear naming, consistent patterns, logical structure. Future developers should be able to understand and modify it.

Proper error handling

Things go wrong. External services fail. Users submit unexpected input. Networks timeout. Good backends handle errors gracefully, log useful information, and recover when possible.

Testing

We write testable code and then test it. Unit tests for business logic. Integration tests for APIs. This catches bugs before deployment and makes future changes safer.

Backend without frontend?

Backend provides data and logic, but users need an interface to interact with it.

What backend provides

  • Data storage and retrieval.
    Information persists between sessions
  • Business rules enforcement.
    Logic that governs your application
  • Security and authentication.
    Who can access what
  • Integration handling.
    Connections to external services

What backend needs

  • User interface.
    Frontend that users actually interact with
  • API layer.
    How frontend and backend communicate

We build complete applications. Backend, frontend, and the APIs connecting them. Everything works together because it’s built together.

Common backend patterns

Types of backend functionality we build regularly.

CRUD operations

Create, Read, Update, Delete. The foundation of most business applications. Managing records, handling data entry, maintaining information over time.

Workflow automation

Multi-step processes that happen automatically. Approval chains, scheduled reports, triggered notifications. Replacing manual work with reliable automation.

Data processing pipelines

Ingesting data from various sources. Transforming, cleaning, calculating. Outputting reports, exports, or formatted results. Handling large datasets efficiently.

Integration hubs

Connecting your application to external services. Payment processors, email providers, third-party APIs, legacy systems. Making different systems work together.

Real-time features

Live updates, notifications, collaborative editing, streaming data. When users need to see changes as they happen.

Server infrastructure

Backend code needs servers to run on. We handle the infrastructure so you don’t have to.

What we set up

  • Server configuration. Optimized for your application’s needs
  • SSL certificates. Secure HTTPS connections
  • Domain and DNS. Pointing your domain to your application
  • Deployment pipeline. Process for pushing updates
  • Backup systems. Regular automated backups
  • Monitoring. Alerts when something goes wrong

Hosting

We typically use cloud hosting providers like Digital Ocean. You own the hosting account. We configure and manage it. Costs vary based on traffic, data volume, and complexity. Expect €20-€100+ per month for typical applications.

Ongoing maintenance

Servers need ongoing care. Security patches, software updates, performance monitoring, backup verification. This is covered by our maintenance packages. Without maintenance, applications become insecure and eventually break.

Frequently asked questions

No. We explain what we’re building and why, but you don’t need to understand Node.js or PostgreSQL. What matters is that you understand what your application does, not how it’s built.

Security is built into our development process. Encrypted connections, secure authentication, input validation, regular security updates, proper access controls. We follow industry best practices and OWASP guidelines.

Usually, yes. We’ll assess your current database during discovery. If the structure is reasonable, we can build on it. If it has significant issues, we’ll recommend solutions.

We build for growth from the start. Database queries optimized for larger datasets. Code structured to add features. Infrastructure that can scale. When growth happens, the foundation is ready.

You do. We set up hosting accounts in your name. We configure and manage them, but you own everything. If you ever want to move to another provider or developer, you have full access.

Ready to build?

Good backend is the foundation everything else relies on. Let’s build something solid.

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