Senior Kotlin Developer (Multiplatform)

Java

-, Warszawa+4 Locations

Upvanta sp. z o.o.

Full-time

B2B

Senior

Remote

Tech stack

Kotlin

advanced

Kotlin multiplatform

advanced

Microservices

regular

SQL

regular

Agile

regular

Job description

💼 Join an international team developing modern backend applications!

We are looking for an experienced Backend Developer with strong Kotlin skills to join a team working on distributed systems based on a microservices architecture.

We are seeking someone passionate about modern technologies, eager to grow, and ready to collaborate in an international environment.

Requirements:

• Excellent knowledge of Kotlin, backed by at least 3 years of commercial experience

• Knowledge of Kotlin Multiplatform (KMP) - required

• Practical experience with microservices

• Good command of SQL and experience with at least one database engine

• Ability to work in Agile / Scrum methodologies

• Good to have: experience with Quarkus, OpenAPI

• Nice to have: experience with AWS or Azure cloud platforms

• Very good command of English (spoken and written)

Your Responsibilities:

• Developing and maintaining backend applications using Kotlin and microservices architecture

• Collaborating with the team on designing and delivering scalable solutions

• Creating and documenting APIs ( OpenAPI knowledge is a plus)

• Deploying and monitoring applications in cloud environments

• Actively participating in Agile planning and process improvements

Published: 13.08.2025

Office location