Senior Backend Engineer

5+ years backend engineering experience with production systems Strong proficiency in Kotlin or Java Deep understanding of Kafka (topics, consumers, producers, streaming) Experience with distributed systems and event-driven architecture SQL and database optimization skills (Mysql, PostgreSQL) Ability to debug complex issues across multiple services Strong communication skills for cross-team collaboration Experience with PHP (nice to have) WebSocket implementation experience (nice to have) Redis for caching at scale (nice to have) Real-time data processing and normalization (nice to have) Vert.x or similar reactive frameworks (nice to have) Sports betting or gaming industry background (nice to have) DevOps/infrastructure experience (AWS, Docker, Kubernetes) (nice to have) Experience with RabbitMQ (nice to have) Retool or similar internal tooling platforms (nice to have)

Own integration with sports feed data providers Build and maintain WebSocket clients for real-time odds and event data Ingest and normalize data from REST APIs and streaming feeds Handle data mapping between providers Troubleshoot data quality issues and discrepancies across feeds Design and maintain Kafka topics and consumer/producer architecture Monitor and troubleshoot consumer lag issues Optimize message processing for high-volume, real-time data streams Manage data flow between microservices Work with Redis for caching and performance optimization Maintain and extend the Market Management System Build tools for product ops (Retool dashboards) Implement market settlement logic Handle market limits and configuration management Support live market suspension/unsuspension logic Ensure 99.9% uptime for critical data pipelines Optimize memory consumption and application stability Implement monitoring and observability (Datadog) Debug production issues across distributed systems Participate in on-call rotation