TL;DR

Senior Kotlin Developer (Banking Platform): Design, develop, and maintain high-quality backend services for a UK-based digital bank with an accent on Kotlin, microservices architecture, and test-driven development. Focus on building robust, scalable banking platform features and optimizing application performance in an agile, cross-functional team.

Location: Hybrid across multiple European cities including Belgrade, Cluj-Napoca, Krakow, Lodz, Lublin, Riga, Sofia, Varna, Warsaw, Wroclaw, and remote options in Bulgaria and Poland

Company

UK-based digital bank delivering innovative and accessible financial solutions with a user-friendly platform and customer-centered approach.

What you will do

Design, develop, and maintain backend services using Kotlin
Collaborate with cross-functional teams to define and ship new features
Optimize performance, quality, and responsiveness of applications
Conduct code reviews and ensure robust code quality with TDD using Kotest or JUnit
Participate in full software development lifecycle from design to deployment
Use Git for version control and engage in continuous improvement and agile practices

Requirements

5+ years of backend software development experience
Proficient in Kotlin and Kotlin-specific frameworks like Ktor and Coroutines
Experience with microservices architecture and PostgreSQL
Strong knowledge of testing methodologies including TDD and testing frameworks
Experience with Docker, Kubernetes, Gradle or Maven, and Git
Strong English communication skills

Nice to have

Experience with Kafka

Culture & Benefits

Vacation as per local laws with encouragement to rest properly
Health insurance support for employees and families
Sick pay including 10 days without doctor's note
Time off for state holidays regardless of client schedule
Corporate parties and social events
Technical and everyday problem-solving support at work