Kotlin Backend Engineer for Fintech Microservices

Sii Poland; Poznań; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Profit sharing

Medical care

Open and accessible management team

Many experts you can learn from

Regular integration events and trips

Comfortable and well-equipped offices

Job summary

Join Sii Poland in Poznań to work on a fintech platform that supports company expense management and integrates with banks, accounting tools, and HR solutions. You will design, build and maintain Kotlin-based microservices and collaborate across Platform, Services, and SMB domains.

You'll help improve reliability, monitoring, and scalability while participating in code reviews and upholding high code quality standards.

Qualifications

• Minimum 3 years of professional software development experience.
• Hands-on Kotlin experience in commercial projects.
• Experience with backend systems and microservices architecture.
• Good command of English and residing in Poland.

Responsibilities

• Designing, building, and maintaining microservices using Kotlin.
• Collaborating with cross-functional teams to deliver solutions across Platform, Services, SMB, and other domains
• Supporting system performance monitoring and contributing to improvements in reliability and scalability
• Participating in code reviews and maintaining high code quality standards
• Contributing to the continuous improvement of code quality and system architecture
• Troubleshooting and resolving technical issues

Skills

Kotlin

Microservices

Backend development

Cloud environments

Observability tools

Tools

AWS

Kubernetes

PostgreSQL

JUnit

Grafana

Job description

Join Sii Poland in Poznań to work on a fintech platform that supports company expense management and integrates with banks, accounting tools, and HR solutions. You will design, build and maintain Kotlin-based microservices and collaborate across Platform, Services, and SMB domains.

You'll help improve reliability, monitoring, and scalability while participating in code reviews and upholding high code quality standards.