Senior Backend Architect - Real-Time, Scalable Systems

LeoVegas Mobile Gaming Group; Województwo mazowieckie; Hybrid; PLN 246,000 - 357,000; Full time

Benefits offered by this job

Hybrid work policy

4 weeks of Workation

Private medical care

Job summary

LeoVegas Group is seeking a highly experienced Staff Backend Engineer to lead the design and evolution of distributed systems in a fast-paced sports betting environment. You will guide architecture, raise engineering standards, and stay hands-on to balance business needs with platform health.

You’ll mentor teams, drive observability and reliability, and collaborate with Product, Engineering Managers and Architects to translate problems into practical engineering solutions.

Qualifications

• Proven experience designing, building and operating distributed systems at scale.
• Strong backend expertise in Java (21+).
• Hands-on experience with Reactive Programming and non-blocking systems (Spring Boot/Vert.x).
• Hands-on experience with Apache Kafka and event-driven architectures; familiarity with Redis.
• Experience with SQL and NoSQL databases (e.g., PostgreSQL, MariaDB, MongoDB).
• Experience with observability tools (Datadog, Grafana, Kibana) and debugging production incidents.

Responsibilities

• Lead architecture and design discussions for scalable, resilient distributed systems in production.
• Drive simplification of complex systems while maintaining performance and code quality.
• Identify scalability, resiliency and operational risks and lead root-cause analyses.
• Improve observability, monitoring and readiness, and reduce technical debt.
• Promote best practices in event-driven architectures, performance optimization, testing, CI/CD.
• Mentor engineers through design reviews, code reviews and pair programming.

Skills

Distributed systems design

Java backend

Reactive programming

Kafka

Redis

Observability

Tools

Spring Boot

Vert.x

Job description

LeoVegas Group is seeking a highly experienced Staff Backend Engineer to lead the design and evolution of distributed systems in a fast-paced sports betting environment. You will guide architecture, raise engineering standards, and stay hands-on to balance business needs with platform health.

You’ll mentor teams, drive observability and reliability, and collaborate with Product, Engineering Managers and Architects to translate problems into practical engineering solutions.