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Liridon Miftari

@liridonmiftari

Senior Backend Engineer at Sisal, building Kafka systems for real-time betting transactions at 10k+ requests per second.

Kosovo

Message

At Sisal, I develop event-driven systems for real-time betting transactions and implemented Kafka Exactly-Once Semantics to protect financial data integrity at peak traffic. I also designed distributed locking and idempotency patterns to prevent double-spending and race conditions.

At Moveo, I redesigned the HorsesAPI race validation engine and built Kafka Streams pipelines for live betting monitoring. I also developed backend services for Kugo TV at Linkplus and created Spring Project Generator, an open-source tool that automates Spring Boot scaffolding.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

Sisal

Jul 2024 - Present (2 years 2 months)

Developing event-driven systems for real-time betting transactions, implementing Exactly-Once Semantics in Kafka, and designing distributed locking and idempotency patterns to ensure data integrity and system resiliency.

Java Spring Boot Kafka Kafka Streams Event Driven Architecture Distributed Systems Idempotency Circuit Breakers Failover

Senior Backend / Java EE Developer

Moveo

Feb 2022 - Jul 2024 (2 years 5 months)

Led redesign of a race validation engine, optimized high-load modules with Spring, implemented cache-aside with Redis, and built real-time data pipelines with Kafka Streams and Elasticsearch.

Java Java EE Spring Framework Kafka Streams Redis Oracle DB Elasticsearch Grafana Prometheus OpenTelemetry Kubernetes Docker

Backend Developer

Linkplus

Jan 2019 - Jan 2021 (2 years)

Developed backend services for Kugo TV, managing streaming logic and high-availability media delivery, and integrated third-party billing and customer service APIs.

Java Microservices API Integration Streaming High Availability