Senior Backend Engineer – Retention Domain (Hybrid)

Talanto; Warszawa; Hybrid; PLN 268,000 - 296,000; Full time

Benefits offered by this job

Hybrid work

Workation

Private medical care

Insurances

Sports card

ICAS assistance

Office snacks

Breakfast Mondays

Gym in building

Free parking

Job summary

LeoVegas is seeking an experienced Senior Backend Engineer to join our Retention domain. You’ll help build scalable backend services in a fast-moving, microservice environment, using Java or Kotlin, Spring, and Kafka to deliver value across our products.

In a hybrid setup, you’ll own features end-to-end, collaborate with cross-functional teams, and drive initiatives with a strong quality mindset. Your work will directly influence player journeys, bonuses, loyalty programs, and cross-channel

Qualifications

• 6+ years of backend development experience in Java and/or Kotlin.
• Experience with messaging systems, e.g., Kafka.
• Experience with microservice architecture and Spring/JPA.
• Proficient with MySQL databases.
• Familiarity with Claude AI tools.

Responsibilities

• Build scalable, robust backend solutions in a microservice architecture.
• Contribute to technical discussions and align with business needs.
• Collaborate with operations and stakeholders.
• Drive initiatives with a high-quality mindset.
• Own end-to-end development across the full stack.
• Collaborate across domains to ensure scalable IT ecosystems.

Skills

Java

Kotlin

Kafka

Microservices

Spring

JPA

MySQL

Claude AI

Tools

Kubernetes

OpenAPI

BigQuery

Job description

LeoVegas is seeking an experienced Senior Backend Engineer to join our Retention domain. You’ll help build scalable backend services in a fast-moving, microservice environment, using Java or Kotlin, Spring, and Kafka to deliver value across our products.

In a hybrid setup, you’ll own features end-to-end, collaborate with cross-functional teams, and drive initiatives with a strong quality mindset. Your work will directly influence player journeys, bonuses, loyalty programs, and cross-channel