Backend Engineer (Java, Kotlin, Spring Boot)

OBI Smart Technologies is a joint venture between OBI and Reply Group, responsible for co-designing, building, and operating mission-critical digital platforms for commerce, customer service, and omnichannel retail. The company focuses on implementing standardized processes and scalable digital products to support one of Europe’s largest DIY retailers, advancing product internationalization and digital mindset within retail.

• Completed university degree in Computer Science or a comparable technical field.
• 3–5 years of professional experience in backend development using Kotlin or Java with Spring Boot.
• Good understanding of REST APIs, microservices, and distributed systems.
• Hands-on experience or exposure to Kafka or similar messaging systems.
• Experience working with PostgreSQL and designing reliable data models.
• Familiarity with CI/CD, containerization, and basic security concepts (OAuth 2.0, IAM).
• Strong communication skills in English and Polish, with readiness to work in a hybrid model in Katowice.

Nice to have:

• Experience with AWS and Kubernetes (e.g., Amazon EKS).
• Experience with event-driven architectures in production environments.
• Familiarity with observability tools and monitoring practices.

• Develop and maintain backend services, APIs, and integrations using Kotlin and Spring Boot.
• Translate business and product data requirements into scalable and maintainable backend solutions.
• Contribute to event-driven architectures and asynchronous processing using Kafka.
• Support integration of backend systems within cloud-native and containerized environments.
• Design and maintain data models and persistence layers using PostgreSQL.
• Collaborate with product, business, and engineering teams to refine requirements and deliver features.
• Contribute to code quality, testing, observability, and system reliability.