Kotlin Developer (f/m/x)
Join a team working on a modern fintech platform that supports company expense management. The project focuses on developing a finance solution that enables seamless integration of financial tools (including payment cards, expense management, and invoice handling) directly into partner systems such as banks, accounting platforms, and HR solutions. The product being developed allows companies to simplify financial processes, automate settlements, and gain full real-time control over their spending.
Your tasks
Leading initiatives to design, build, and maintain scalable microservices primarily using Kotlin
Collaborating with cross-functional teams to develop innovative solutions across Platform, Services, SMB, and other domains
Analyzing system performance and implementing optimizations to ensure high reliability and scalability
Participating in code reviews, post-mortems, and providing mentorship to other engineers
Proactively improving the architecture and quality of solutions, and leading the team through technical challenges and migrations
Requirements
Minimum 5 years of professional experience in software development
Expertise in server-side languages, especially Kotlin, and experience with distributed systems, microservices, and cloud environments (e.g., AWS, Kubernetes)
Proficiency with relational databases like PostgreSQL, testing frameworks (e.g., JUnit, Testcontainers), and observability tools like Grafana
Strong problem-solving skills and a collaborative mindset to mentor and upskill your teammates
Very good knowledge of English - min. B2 level
Residing in Poland required
Nice-to-have requirements
Previous work in the fintech industry or with financial products
Knowledge of topics related to payments, cards, or accounting
Experience working in a scale-up environment
Proficiency in one of the following front-end technologies: React or TypeScript