Senior Kotlin Developer (Banking Platform)

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