Java Developer

Playtika; Warszawa; On-site; PLN 180,000 - 260,000; Full time

Job summary

Playtika, a global leader in mobile games, is seeking a senior Java developer to design, build, and maintain scalable services. You will own multiple domains across the lifecycle, drive reliability, and contribute to a microservice architecture with an AI-first approach.

The role requires strong Java, Spring, Kafka, SQL skills, plus testing and CI/CD proficiency. Collaboration with product teams and on-call readiness are expected.

Qualifications

• 5+ years of professional experience in software development with Java.
• Strong knowledge of Java Core (collections, multithreading, streams API) and Java 8+ features.
• Solid experience with the Spring stack: Spring Boot, Spring Cloud, Spring Data (JPA, JDBC).
• Hands-on experience with messaging systems like Apache Kafka.

Responsibilities

• Design, develop, and maintain robust, scalable services that meet business requirements and align with company standards.
• Take end-to-end ownership of multiple domains, supporting them throughout their lifecycle (design, development, deployment, monitoring, maintenance).
• Investigate, resolve, and prevent production incidents to ensure minimal impact on users.
• Collaborate with product managers, architects, and other developers to translate requirements into technical designs and deliver new features.
• Drive improvements in development processes, code quality, testing practices, and system reliability.
• Write clean, well-documented code and ensure proper test coverage (unit, integration, and functional).
• Actively contribute to the evolution of our microservice architecture while supporting existing systems.
• Be an AI-first developer who actively builds and leverages agents to scale personal and team productivity.

Skills

Java Core

Spring Framework

Kafka

SQL

Testing (JUnit/Mockito)

CI/CD

DevOps knowledge

Tools

Docker

Kubernetes

Job description

Ambition Needs a Place to Grow.

At Playtika, we create mobile games enjoyed by millions worldwide.

Combining the scale of a public company (NASDAQ: PLTK) with the speed and ownership of a startup, we are a global leader where innovation, data, and creativity shape the future of entertainment.

Here, your ideas matter, your decisions impact products, and your growth is supported across global studios.

Bring your hunger where it belongs: at the front of the pack.

Responsibilities:

• Design, develop, and maintain robust, scalable, and maintainable services that meet business requirements and align with company standards
• Take end-to-end ownership of multiple domains, supporting them throughout their lifecycle (design, development, deployment, monitoring, maintenance)
• Investigate, resolve, and prevent production incidents to ensure minimal impact on users
• Collaborate with product managers, architects, and other developers to translate requirements into technical designs and deliver new features
• Drive improvements in development processes, code quality, testing practices, and system reliability
• Write clean, well-documented code and ensure proper test coverage (unit, integration, and functional)
• Actively contribute to the evolution of our microservice architecture while supporting existing systems
• Be an AI-first developer who actively builds and leverages agents to scale personal and team productivity

Requirements:

• 5+ years of professional experience in software development with Java
• Strong knowledge of Java Core (collections, multithreading, streams API) and Java 8+ features (lambdas, optionals, functional interfaces, records, etc.)
• Solid experience with the Spring stack: Spring Boot, Spring Cloud, Spring Data (JPA, JDBC)
• Proficiency in object-oriented design, design patterns, and software engineering best practices
• Hands-on experience with messaging systems like Apache Kafka
• Strong SQL knowledge, with experience in relational databases (e.g., MySQL/Postgresql)
• Experience writing and maintaining tests using JUnit, Mockito, Testcontainers, WireMock
• Familiarity with CI/CD tools such as TeamCity or Jenkins
• Strong troubleshooting and debugging skills, including working with monitoring and logging tools (Grafana/Prometheus, ELK)
• Willingness to participate in an on-call duty rotation to support production systems, ensuring timely response and resolution of critical incidents
• Excellent communication and collaboration skills, with the ability to work across teams
• Knowledge of microservice design principles and distributed systems

Nice to have:

• Experience with NoSQL databases (e.g., Redis, Aerospike)
• Knowledge of Docker and Kubernetes for containerized deployments

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We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.