Senior Backend Software Engineer (Java/Kotlin) - Madrid

Senior Backend Software Engineer (Java/Kotlin) – Madrid

Salary: Up to €65,000
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Working Model: Hybrid (3 days onsite in Madrid)
Tech Stack: Java, Kotlin, Cloud Technologies, Distributed Systems
Focus: Build scalable, cloud-native applications in a high‑performing team

About the Client

We are seeking 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 will 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.

Benefits

• Salary up to €65,000
• Hybrid working – 3 days onsite in Madrid
• Flexible 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

Role

As a Senior Backend Software Engineer, you will design, develop and maintain scalable backend applications and services. You will work primarily with Java and Kotlin to build clean, maintainable code, develop APIs, design integrations between distributed systems and deliver high‑quality software to production.

You will 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. xhfqzwm This hands‑on role offers the opportunity to influence architecture, mentor others and help shape the future of the platform.

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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