Kotlin Backend Engineer — Remote & Impactful

Appunite; Poznań; Hybrid; PLN 156,000 - 223,000; Full time

Benefits offered by this job

Remote work with Poznań/Warsaw/Kraków/

Office access in Poznań, Warsaw, Krak

Quarterly on-site visits (Poznań or W

Job summary

Appunite in Poland is seeking Kotlin Engineers to join our expanding team and take responsibility for end-to-end development of client sites across Europe. You will shape the user experience by delivering features in Kotlin and Java, backed by a strong Spring Boot, microservices, and APIs foundation.

Work across the stack with a collaborative cross-functional group, documenting decisions with KPIs and business value, and applying DDD and event-driven patterns to scale services.

Qualifications

• Commercial experience coding in Kotlin or Java.
• Solid Spring Boot experience to build scalable microservices and RESTful APIs.
• Willingness to learn Kotlin for new services and work with AI-assisted tools.

Responsibilities

• Own a project end to end, driving design, production and beyond.
• Collaborate across teams for listings, product pages and APIs, documenting value and KPIs.
• Work across the stack: frontend, backend, and some networking as an engineer.
• Learn and apply DDD and event-driven architecture in practice.

Skills

Kotlin

Java

Spring Boot

REST APIs

Microservices

DDD

AI tools

Polish & English

Job description

Appunite in Poland is seeking Kotlin Engineers to join our expanding team and take responsibility for end-to-end development of client sites across Europe. You will shape the user experience by delivering features in Kotlin and Java, backed by a strong Spring Boot, microservices, and APIs foundation.

Work across the stack with a collaborative cross-functional group, documenting decisions with KPIs and business value, and applying DDD and event-driven patterns to scale services.