Experteer Overview
Senior Backend Engineer at a fast-growing technology company where software and engineering excellence are core. You will help maintain and evolve a transactional, platform-focused backend, shaping architecture and cloud-native modernization. You’ll work with cross-functional teams to build scalable services and improve reliability and observability. This role offers ownership, collaboration, and opportunities to participate in strategic technical decisions within an international, growth-driven environment.

Compensaciones / Beneficios
• Design and develop robust backend services using Kotlin
• Build and maintain scalable REST APIs and distributed microservices
• Participate in architectural discussions focused on scalability, performance, and maintainability
• Contribute to migration and modernization of cloud-native services
• Improve reliability, observability, and operational excellence
• Manage services with a DevOps mindset from requirements analysis to production
• Identify recurring operational issues and implement automated solutions
• Collaborate with engineering teams to share knowledge and improve development practices




• Support adoption of modern engineering standards, testing strategies, and platform tooling

Responsabilidades
• 5+ years of professional Kotlin experience
• Backend development with Kotlin, Spring Boot (highly valued) and Quarkus (highly valued)
• Experience designing, developing, and maintaining RESTful APIs
• Strong understanding of microservices and distributed systems
• Experience with PostgreSQL, MySQL, MongoDB
• Git and collaborative development workflows
• Cloud platforms experience, preferably Google Cloud Platform (GCP)
• CI/CD pipelines and deployment automation
• Kubernetes and GitOps tools such as Terraform, Helm, or Flux
• Monitoring and observability tools such as Grafana, Prometheus, Kibana
• Software design patterns, testing strategies, and Clean Code principles
• Excellent written and spoken English

Requisitos principales
• Permanent contract
• Hybrid working model
• Versátil working hours
• Continuous learning and professional development
• International environment
• Competitive salary package

📌 Senior Kotlin Fullstack Developer (Barcelona)
🏢 Hays
📍 Barcelona