Senior Backend Engineer - Healthcare API Integrations Kotlin

voize GmbH; Warszawa; Hybrid; PLN 150,000 - 210,000; Full time

Benefits offered by this job

Stock options

Flexible hours

Hybrid setup

Job summary

voize GmbH in Warsaw, Poland is seeking a Backend Engineer to ensure data flows between voize and partner healthcare software. You will build and maintain integrations that connect our products with hospital systems.

The role emphasizes Kotlin and Coroutines, REST/GraphQL API design, and end-to-end ownership of integrations. Occasional travel to Germany every two months is required. We offer flexible hours and a hybrid setup.

Qualifications

• Several years of backend development and API integration experience.
• Proficiency in Kotlin and Coroutines.
• API design and development with REST or GraphQL.
• Business fluent in English (C1).

Responsibilities

• Shape the future of integrations between voize and care/hospital software.
• Build scalable API solutions and set industry standards.
• Own end-to-end delivery from idea to deployment.
• Design thoughtful data models for complex systems.
• Improve documentation and save care providers time.

Skills

Backend development

API integration

Kotlin

Coroutines

REST API

GraphQL

English (C1)

Travel to Germany

Job description

voize GmbH in Warsaw, Poland is seeking a Backend Engineer to ensure data flows between voize and partner healthcare software. You will build and maintain integrations that connect our products with hospital systems.

The role emphasizes Kotlin and Coroutines, REST/GraphQL API design, and end-to-end ownership of integrations. Occasional travel to Germany every two months is required. We offer flexible hours and a hybrid setup.