Contractor Software Engineer (Java / Kotlin)

Java

-, Warszawa+1 Location

OpenNet.pl

14 200 - 30 240PLN

Net per month - B2B

Full-time

B2B

Mid

Hybrid

Tech stack

English

B2

Java

regular

Kotlin

regular

Scala

regular

Job description

The salary range envisaged for the supplier depending on the skill set is: 14 200 - 30 240 PLN net +VAT

We are part of Allegro and we are specialists in providing advanced IT systems for logistics management.

We practice Code Review, Continuous Integration, Scrum/Kanban, Domain Driven Design, Test Driven Development, Pair Programming, depending on the team.

To match the scale, we also focus on building entire Platforms of tools and technologies that accelerate and facilitate day-to-day development, and we ensure the best Developer Experience to our teams.

We are looking for suppliers who

• Engage in coding using Java and/or Kotlin/Scala.
• Desire work that holds deeper significance beyond mere tasks assigned by management and seek enjoyment in the outcomes.
• Take pride in the code they produce, welcoming feedback and actively participating in knowledge-sharing during code reviews.
• Demonstrate proficiency in seeking efficient solutions to user requirements.
• Strive for continuous learning and updating of skills.
• Possess English language proficiency at the B2 level.

What we offer

• Cooperating with people a you can always count on — we have on board top-class specialists and experts in their areas of expertise
• A high degree of autonomy in terms of organizing your team’s work; we encourage you to develop continuously and try out new things
• Opportunities for professional development through involvement in advanced technological projects and collaboration with experienced specialists.

Why is it worth cooperating with us

• We use, among others, Java 17, Kotlin, Coroutines, Scala, Spring, Reactive Programming, Spark, Dataproc, Microservices architecture supporting high request rates on our business data bus. Utilizing extensive Big Data resources on GCP and incorporating Machine Learning into our operational workflows.
• We practice Code Review, Continuous Integration, Scrum/Kanban, Domain Driven Design, Test Driven Development, Pair Programming, depending on the team
• Our internal ecosystem is based on self-service and widely used tools, such as Kubernetes, Docker, Consul, GitHub or GitHub Actions. This will allow you, from day one, to develop software using any language, architecture and scale, restricted only by your creativity and imagination.
• Technological autonomy: you get to choose which technology solves the problem at hand (no need for management’s consent). You are responsible for what you create
• Operating in a deployment ecosystem that encompasses private Data Centers with a substantial server infrastructure, as well as Public Cloud platforms like Google Cloud and Microsoft Azure. Active participation in the development of original open-source projects, fostering significant community engagement on GitHub.

Published: 25.08.2025

Meet the company

OpenNet.pl

At Allegro, we build and maintain some of the most distributed and scalable applications in Central Europe. Work with us on e-commerce solutions to be used (and loved) by your friends, family and millions of our customers.

Company profile

Office location