Do you build custom Java applications?

Yes. We design and develop robust, scalable enterprise Java applications from Las Rozas (Madrid) for clients in Spain and Europe.

Do you work with companies outside Madrid?

Yes. We combine remote work with meetings in Madrid / Community of Madrid depending on the project.

Experts in Java application development

We build custom Java software for companies that need robust, scalable and secure solutions. Complex projects, outstanding quality and on-time delivery.

Talk to the team

Solid architecture Scalable, secure design ready to grow with your business.

Custom Java Applications tailored to your processes and goals.

Reliable delivery Quality, testing and ongoing technical support.

Senior team and tailored Java solutions

Solid architecture

We design scalable, secure architectures aligned with your business goals.

Java ecosystem

We master Java, Spring, Hibernate, microservices, cloud and best practices.

Enterprise integration

We connect Java with APIs, databases, ERPs, CRMs and cloud services.

How we ensure results

Proven experience

Over 15 years designing Java solutions for companies across industries.

Custom design

We analyze your business and design the Java solution that best fits your needs.

Quality focus

Clean code, automated tests and quality standards that ensure reliable software.

Close collaboration

We support you throughout the project lifecycle with clear, constant communication.

Custom Java software development

We turn your ideas into innovative, scalable Java solutions. We combine technical expertise, best practices and a business focus to deliver real value from day one.

Over 15 years of experience in Java projects.
Innovative solutions tailored to your processes.
From monolithic applications to cloud-native microservices.
Senior teams specialized in Java development.

Technologies and tools

Spring Boot

Hibernate

Kafka

Docker

Kubernetes

AWS

PostgreSQL

Redis

Microservices

JUnit

Git

Maven

Clients

Web

Móvil

API

Java architecture

API Gateway

Microservices
Spring Boot

Datos

Infraestructura Cloud

AWS

Docker

Kubernetes

Integrations

External APIs

Cloud services

Legacy systems

Java development services

Java application development

Robust, secure and scalable enterprise applications.

Migration to Java

We modernize your systems and migrate to Java technologies.

Consulting and architecture

We design architectures and solutions aligned with your business.

Performance optimization

We improve the performance, scalability and efficiency of your applications.

Maintenance and support

Evolutionary and corrective support to ensure continuity of your software.

API and third-party service integration

We connect your applications with external systems and services.

Experts in custom Java software development in Madrid for companies across Spain and Europe

We work from our hub in Las Rozas, Madrid, delivering custom software for companies across Spain and Europe.

Local team, international reach.
Close and responsive support.

Talk to an expert

Calle Chile 4, Edificio 1, Oficina 8, 28290 Las Rozas de Madrid

info@nattia.dev

91 027 3665

Frequently asked questions about Java

Java is a high-level programming language and development platform widely used to build software applications, especially enterprise, web and mobile apps. It is one of the most popular and widely used programming languages in the world.
To write effective Java code you need four core concepts: encapsulation, inheritance, polymorphism and abstraction. These are not just academic ideas — they are practical tools for solving real programming problems.
Java is object-oriented, which helps you build modular programs and reusable code. It is also platform-independent: one of its biggest advantages is running across different computer systems with ease.
Most experts will say Java is easier to learn. It is newer than C++ and less complex in its principles and runtime. Still, you should look beyond the learning curve: the right choice depends on what you want to build.
Java is an object-oriented programming (OOP) language. It includes virtually all OOP features: classes, data abstraction and encapsulation, inheritance, polymorphism, overloading, and data/process hiding.
For a beginner, around 1,000 hours of focused practice are often estimated to reach a competent level and master Java. In that time you will not only learn the fundamentals — you will be able to use Java fluently.
Java Standard Edition (Java SE), Java Virtual Machine (JVM), Java Runtime Environment (JRE), Java Development Kit (JDK) y las API de Java.
Methods should have a maximum of 30 lines of code. Method signatures, comments, blank lines and lines with only braces do not count. This rule forces complex calculations to be split into separate methods.
Java is used across many platforms and devices thanks to its portability. Popular uses include enterprise software, mobile apps, web apps, cloud applications, games and IoT.
Java has three kinds of variables: instance, class and local.