Senior Full-Stack Kotlin Engineer (Freelance/Service Agreement)

Open to B2B contractors based in Poland.

Rate: 136—179 PLN/hour.

We are looking for a skilled Senior (Full-Stack) Kotlin Engineer as service agreement collaborator. Flix customers worldwide expect a comfortable and seamless experience at our stations as part of their travel experience. Our self-organized, cross-functional and distributed team builds products to enable Flix station managers to scale management of the station inventory, which a wide range of internal tech teams across Flix depend on, and overall serves to improve the experience at our stations for millions of passengers.

Scope of services

• Independent management of roadmap epics as topic driver, aligning technical requirements and solutions across the Flix teams together with the product owner
• Close interaction with business stakeholders on continuously developing and improving the product vision with business driven mindset
• Supporting the development process using an agile environment
• Pair and ensemble programming, code reviews, testing, and operations
• Delivery of new versions of the product, using continuous integration and delivery

Relevant experience

• 5+ years of software engineering experience, primarily backend development with a JVM language, including some commercial experience with Kotlin
• Solid front-end skills with modern front-end stack
• Experience with event-driven architectures; exposure to event sourcing, CQRS, and domain-driven design (DDD) is a plus
• Hands-on experience with automation and deployment of applications into cloud infrastructure (e.g., AWS, Azure) using CI/CD pipelines and DevOps best practices
• Proficiency in system design and architecture
• Solid written and spoken English communication skills