Senior Software Engineer — Madrid (Hybrid) for Player Accounts

FEG; Madrid; Hybrid; EUR 75,000 - 125,000; Full time

Benefits offered by this job

Hybrid work

Job summary

Fortuna Entertainment Group in Madrid is seeking a Senior Software Engineer to design and deliver a next-generation Player Account Management platform. You will own architecture and engineering standards, ensuring transactional correctness, data integrity, and operational resilience in hard distributed systems within regulated environments.

You will lead architecture decisions, implement core services, and partner with DevOps, security, and product teams to deliver robust software and deliver

Qualifications

• 8+ years of backend engineering experience in mission-critical systems.
• Strong Java and Spring Boot experience in production environments.
• Solid understanding of concurrency, transactions, and JVM memory model.
• Production experience with messaging systems (Kafka, RabbitMQ, or similar).
• Strong SQL knowledge: transactions, isolation levels, indexing, performance tuning.
• Experience with distributed systems and eventual consistency patterns.
• Experience with containerised environments (Docker).
• Familiarity with caching strategies (Redis or similar).
• Security awareness (authentication flows, input validation, encryption in transit and at rest).
• Experience with observability tools (Prometheus, OpenTelemetry, or similar).
• Demonstrable curiosity and hands-on experimentation with AI-assisted development tools.

Responsibilities

• Design and implement core services (identity, transactional flows, data integrity) within an event-driven architecture.
• Build asynchronous workflows with strong guarantees: idempotency, consistency, and auditability.
• Design high-performance REST APIs with clear contracts and versioning.
• Implement distributed transaction patterns and reason about compensation and eventual consistency.
• Apply concurrency control to ensure correctness under concurrent writes.
• Build resilient systems with circuit breakers, retries, timeouts, and graceful degradation.
• Manage schema evolution with zero-downtime migrations.
• Integrate authentication and authorisation solutions.
• Write meaningful automated tests as part of daily development.
• Instrument services with metrics and structured logging.
• Build back-office tools and embeddable UI widgets on top of APIs.
• Contribute to infrastructure, CI/CD, and DevOps practices.
• Use AI-assisted development tools to improve productivity and quality.

Skills

Java

Spring Boot

Distributed systems

Concurrency control

REST APIs

Education

Bachelor's degree in Computer Science

Tools

Docker

Kubernetes

Redis

Kafka/RabbitMQ

Job description

Fortuna Entertainment Group in Madrid is seeking a Senior Software Engineer to design and deliver a next-generation Player Account Management platform. You will own architecture and engineering standards, ensuring transactional correctness, data integrity, and operational resilience in hard distributed systems within regulated environments.

You will lead architecture decisions, implement core services, and partner with DevOps, security, and product teams to deliver robust software and deliver