(Senior) Backend Kotlin Engineer - Freelance

Currently we are looking for a Backend Kotlin Engineer.

Salary range (Regular): from 70 PLN/h

Engagement: fulltime

Working Hours: CET

Start date: around mid July 2026

Project duration: minimum 6 months

• Good command of written and spoken English.
• Located in European Union.
• Kotlin.
• Kubernetes.
• Event-driven systems (Kafka).
• CI/CD for mobile and backend applications.
• DevOps collaboration.
• Certification and compliance processes.

In return, we offer:

• 100% remote, flexible work.
• Work with an experienced team of developers and continuous development of your hard and soft skills.
• Dev-friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes.
• Long-term collaboration on challenging products (FinTech, B2B software, E-commerce and...