Senior Backend Software Engineer (Java/Kotlin) Key Highlights

Salary up to €65,000

Hybrid working – 3 days onsite in Madrid

Work with Java, Kotlin, Cloud Technologies and Distributed Systems

Join a high-performing engineering team building scalable, cloud-native applications

About the Client Due to continued growth, we’re looking for a Senior Backend Software Engineer to join an innovative technology organisation at the forefront of software development. Working as part of a collaborative Agile team, you’ll help build and enhance large-scale backend services that power business-critical applications used by customers around the world.

This is an excellent opportunity for an experienced backend engineer looking to work with modern technologies, influence technical decisions and contribute to the development of reliable, scalable software.

The Benefits

Salary up to

€65,000

Hybrid working –

3 days onsite in Madrid

Adaptable working environment

Modern cloud-native technology stack

Work alongside highly experienced engineers

Ongoing learning and career development

Opportunity to contribute to the design and evolution of enterprise-scale systems

The Senior Backend Software Engineer Role As a Senior Backend Software Engineer, you’ll play a key role in designing, developing and maintaining scalable backend applications and services. Working primarily with Java and Kotlin, you’ll build clean,



maintainable code, develop APIs, design integrations between distributed systems and help deliver high-quality software into production.

You’ll collaborate closely with engineers, Product Managers and stakeholders, contributing to technical discussions, improving development practices and ensuring solutions are secure, reliable and built to scale. This is a hands‑on role where you’ll have the opportunity to influence architecture, mentor others, and help shape the future of the platform.

Senior Backend Software Engineer – Essential Skills

Commercial experience with

Java, Kotlin or another JVM language

Experience developing and supporting production software

Strong understanding of software engineering principles, design patterns and clean code

Experience building scalable APIs and distributed systems

SQL and/or NoSQL databases

Public or hybrid cloud experience

Git and modern version control practices

Debugging, testing and monitoring applications

Experience working within Agile development teams

Strong communication and problem‑solving skills

Desirable Skills

Microservices architecture

CI/CD pipelines

Cloud‑native application development

Monitoring and observability tools

Event‑driven architectures

Experience mentoring or supporting junior engineers

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📌 Senior Backend Software Engineer (Java/Kotlin) – Madrid
🏢 Searchability
📍 Madrid