About Diabolocom Diabolocom is a leading European provider of AI-first, cloud-based contact centre (CCaaS) and customer experience (CX) solutions that help companies deliver seamless, personalised customer experiences at scale.

The platform combines proprietary, purpose-built AI technology for customer service, native telecom infrastructure, and deep CRM integrations to automate tasks, elevate data quality, and empower agents across all customer touchpoints.

Trusted by 400+ clients, with deployments across more than 60 countries in Europe, North America, South America, and the Middle East, Diabolocom combines the agility of SaaS innovation with carrier-grade voice performance.

With eight offices worldwide and more than two decades of experience, the company is committed to advancing customer loyalty and growth through sovereign, intelligent, and scalable communication technology.In the context of our exponential growth, we are strengthening our internal engineering team and opening a Senior Backend Software Engineer position in our Auxiliary Squad.About the Auxiliary Squad Auxiliary Squad is responsible for core technical services that ensure secure, high-performance access to the Diabolocom platform.

The squad manages critical components such as the API Gateway and Authentication Services,



which handle large volumes of traffic and serve as the entry point for all backend systems.

In the coming year, we plan to:Expand Scenario's capabilities to support new communication channels, including Facebook Messenger, Instagram, and RCS.Technical Stack Languages: Java *****, KotlinFramework: Spring Boot 3.XDatabase: PostgreSQLMessage Broker: RabbitMQCaching: RedisContainerization: Docker/KubernetesThe team currently consists of: 2 QA engineers3 backend developers1 team leadWhat We're Looking For: 7+ years in software development within product-focused companies, with at least 3+ years working extensively in Java.Experience working with relational databases (PostgreSQL preferred).

Experience with Spring Boot would be a plus.Ability to make architectural decisions and evaluate their impact on system performance, scalability, and reliability.High-quality IT equipment of your choice.Versátil work arrangements and remote work options.Intro call with a Talent Acquisition ManagerLive coding challenge conducted by one of our Senior EngineersDesign interview through screen sharing with our Lead Software EngineerFinal interview with Alexander, our Head of Software Engineering.

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📌 Senior Back-End Software Engineer (Remote) (Madrid)
🏢 Diabolocom
📍 Madrid