Currency

Kotlin Developer

Java

Kotlin Developer

Java

-, Poznań +4 Locations

Upvanta sp. z o.o.

Full-time
B2B
Senior
Remote

Tech stack

    Kotlin

    advanced

    Quarkus

    regular

    OpenAPI

    regular

    REST

    regular

    PostgreSQL

    regular

    MySQL

    regular

    Hibernate

    regular

    Panache

    regular

    Docker

    regular

    Kubernetes

    regular

Job description

Position: Kotlin Developer

Location: remote 

Employment type: B2B


About the role:We are looking for an experienced Kotlin Developer to join team and contribute to building high-performance, scalable, and secure backend services. In this role, you will design and develop RESTful APIs and microservices, ensuring code quality, comprehensive testing, and compliance with industry best practices.


Key Responsibilities:

  • Develop and maintain RESTful APIs and microservices using Kotlin and Quarkus.

  • Lead OpenAPI-first design, maintaining accurate API specifications and documentation.

  • Optimize system performance, scalability, and reliability.

  • Implement robust end-to-end integration testing strategies.

  • Ensure application security (OAuth2/OIDC, JWT) and adherence to industry standards.

  • Collaborate with cross-functional teams on design, data modeling, and system integration.

  • Conduct code reviews, mentor junior developers, and promote engineering excellence.


Required Skills and Experience:

  • Strong proficiency in Kotlin and JVM-based backend development.

  • Hands-on experience with Quarkus and OpenAPI specification design.

  • Solid understanding of REST principles, database design (PostgreSQL/MySQL), and ORM (Hibernate/Panache).

  • Expertise in containerization (Docker) and deployment on Kubernetes.

  • Knowledge of observability and monitoring tools (OpenTelemetry, Prometheus, Grafana).

  • Familiarity with CI/CD workflows and secure coding practices.


What We Offer:

  • Work in a dynamic team using modern technologies.

  • Opportunities for professional growth and technical mentoring.

  • Flexible working arrangements and support for skill development.

  • Access to cutting-edge tools and technologies in a modern backend ecosystem.

Tech stack

    Kotlin

    advanced

    Quarkus

    regular

    OpenAPI

    regular

    REST

    regular

    PostgreSQL

    regular

    MySQL

    regular

    Hibernate

    regular

    Panache

    regular

    Docker

    regular

    Kubernetes

    regular

Office location

Published: 04.12.2025

Kotlin Developer

Summary of the offer

Kotlin Developer

-, Poznań

Upvanta sp. z o.o.

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