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Principal Back-End Software Engineer

Marousi, Greece💼 Full-time🗓 2026-09-17 → 2026-09-26

Core

Design and build scalable, high-volume transactional back-end systems for global iGaming platforms, ensuring reliability and integrity.

Role type

Principal Back-End Software Engineer (hands-on IC with technical leadership)

Builds

Cloud-native microservices, event-driven architectures, and API ecosystems for online gaming providers

Domain

iGaming / Online Gaming / Fintech

Deliverable

production ML models | product features | infrastructure

Required skills

Java, Spring Boot, Event-driven architecture, Apache Kafka, AWS (ECS/EKS), SQL/NoSQL (Postgres/MongoDB), REST/OpenAPI, Docker, Kubernetes, CI/CD (Jenkins/GitHub Actions), Observability (Splunk/Grafana)

Preferred skills

WSO2 API Manager, PAM concepts, Terraform, Helm, AWS/Azure/Confluent certifications

Technologies

Java, Spring Boot, Kafka, AWS, Postgres, MongoDB, Docker, Kubernetes, Jenkins, GitHub Actions, Splunk, Grafana, OpenAPI, OAuth 2.0, JWT

Responsibilities

Write and review production code; drive code quality via TDD and clean architecture; shape backend architecture and API design; mentor a small team of engineers; lead incident response and root cause analysis; build observability tooling and maintain DevOps practices

Seniority

Principal, hands-on IC with team leadership

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