Kotlin Developer

Infakt Sp. z o.o. is an innovative technology-accounting company located in Kraków, Poland, offering a product-focused development environment.

• Minimum 3 years of commercial backend development experience using Java or Kotlin
• Strong proficiency in Kotlin
• Experience with frameworks: Spring Boot or Ktor
• Experience with Spring Security
• Good knowledge of Gradle (with Kotlin DSL)
• Experience working with relational databases (PostgreSQL)
• Practical knowledge of architecture patterns including microservices, asynchronous communication (e.g., RabbitMQ, Kafka), and design patterns
• Standard use of testing tools: JUnit, Kotest
• Familiarity with AI tools

Nice to have:

• Understanding of modern architecture like microservices, REST API, RPC
• Proactive approach and finding smart solutions to ease team workflow
• Openness to use the latest technologies including AI tools
• Appreciation for a supportive culture and knowledge sharing

• Build services from the ground up with a real impact on technology without technical debt
• Ensure performance and scalability of systems serving tens of thousands of customers
• Utilize AI tools such as Claude Code, GitHub Copilot, and Cursor in daily development workflows