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Appunite

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Backend Engineer

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Summary

Remote Kotlin/Java backend engineer at Appunite building and maintaining microservices for a major Polish e-commerce platform (~200M MAU across its European versions). Daily work spans Kotlin, Spring Boot, event-driven architecture/DDD and BigQuery, with 1-2 on-site visits per quarter to Poznań or Warsaw.

The cooperation which stayed from startup to full-blown profitable product team!

Be a part of the biggest e‑commerce platform in Poland and one of most recognizable in Europe with almost 200 mln MAU, which exists for over 20 years.

Our mission is to deliver the best possible customer experience across all platforms: web and mobile. From the moment customers visit our site to browsing, searching, comparing listings, purchasing, and post-purchase services, we ensure seamless, fast, and reliable operations.

We are looking for a talented Kotlin Engineers to join our team and take responsibility for the development and maintenance of certain areas of client’s product and its European versions.

As a Java Engineer, you will work in a dynamic environment with a team that aims to continuously improve and develop the platform. Your role will be focused on select areas of the client’s site, which means responsibility will be dispersed across the team, and you will have a real impact on shaping the user experience.


Metrics of the product:

  • ~10 000 000 visits a week

  • 750 000 active sellers a week

  • 1 000 000 + mobile app visits a week

  • 300 000 Monthly Active Users

What we offer

  • Salary: 12 000 - 18 000 PLN net on B2B - depending on your experience

  • Growth in DDD and event-driven architecture, built into how our services work, plus Kotlin, BigQuery, microservices and AI tools in daily work

  • Remote work with office access in Poznań, Warsaw, Kraków and Toruń. We ask for an on-site visit to Poznań or Warsaw 1–2 times per quarter.

We are seeking individuals who:

  • Have commercial experience coding in Kotlin or Java (with an eagerness to master Kotlin for our new services);

  • Possess solid commercial experience with the Spring Boot ecosystem to build scalable microservices and RESTful APIs;

  • Value high-quality code and engineering best practices to solve complex challenges in massive-scale distributed systems;

  • Are open-minded, adaptable, and eager to step outside your comfort zone to explore unfamiliar tech stacks (e.g., frontend is a nice-to-have)

  • Are adept at utilizing AI-powered tools to accelerate coding, debugging, and research in your daily workflow;

  • Communicate effectively in Polish and English (at least a B2 level).


What does the recruitment process look like?

The recruitment process is carried out in collaboration with our client, which might occasionally extend the timeline.

We kindly ask for your understanding and patience in this regard.

  1. Video interview with our Recruitment Team (abt 45 minutes)

  2. Video interview with Engineer from the project (abt 90 minutes)

  3. If any other step of the recruitment process is necessary, we will inform you.

  4. And finally, the decision, after which we can say “welcome on board.”

Skills

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