Senior .NET Developer

Aristocrat Gaming; Kraków; On-site; PLN 180,000 - 260,000; Full time

Job summary

Aristocrat Gaming in Kraków is seeking a Senior .NET Developer to join a multi-functional agile team building the core architecture of our next-generation platform. You will design and develop scalable microservices for a cloud-ready system that runs across Windows, Linux, and macOS environments.

You’ll work with .NET Core, Docker, Kubernetes, Kafka, Redis, and Ably, helping evolve toward a distributed microservices architecture while practicing TDD, code reviews, and strong collaboration with

Qualifications

• 6+ years of backend development with .NET/.NET Core.
• Experience building large-scale web-based systems.
• Strong knowledge of microservices architecture.
• Relational databases experience.
• Proficient in English communication.
• Familiarity with AI agents/workflows is a plus.

Responsibilities

• Design scalable microservices from the ground up.
• Contribute to a cloud-native, platform-independent system.
• Integrate legacy components into modern architecture.
• Reverse-engineer and migrate monolithic parts to microservices.
• Write clean, testable code with emphasis on quality (TDD).
• Participate in code reviews and establish engineering guidelines.
• Collaborate with product, QA and DevOps teams.

Skills

NET/.NET Core

Microservices architecture

Relational databases

Web-based systems

English communication

Tools

Docker

Kubernetes

Kafka

Redis

Ably

Job description

We are an entertainment and content creation company powered by technology and pushing the boundaries of innovation and creativity to create world-leading gaming content.

An ASX Listed company, headquartered in Sydney, Australia, we’ve grown from humble beginnings to boast more than 8,000 employees across 20 locations around the world, united by the common mission to Bring Joy to Life Through the Power of Play. Through our three operating units: Aristocrat Gaming, Product Madness, and Aristocrat Interactive (online RMG), we provide world-leading mobile and casino games which entertain millions of players across the globe every day.

Connection and integrity are at the heart of everything we do. We put the wellbeing of our people first by giving employees the tools they need to grow, be inspired, and be the best they can be every day. We also strive to lead the way in responsible gameplay and set new standards in company governance and sustainability to support a better, brighter future – full of play.

Summary

We are looking for a Senior .NET Developer to join a multi-functional agile team committed to building the core architecture and infrastructure of our next-generation platform.

This is not just another feature team role. You will be chipping in to the foundation of a scalable, cloud-ready system, designed to operate acrossWindows, Linux, and macOS environments.

You’ll work in a modern engineering ecosystem, using technologies such as.NET Core, Docker, Kubernetes, Kafka, Redis, and Ably, while actively shaping how the system evolves toward a fully distributed microservices architecture.

What You’ll Do

• Designing and developing scalable microservices from the ground up
• Contributing to the evolution of a cloud-native, platform-independent system
• Integrating legacy components into modern architecture
• Reverse-engineering and gradually migrating monolithic parts into microservices
• Writing clean, maintainable code with strong focus on quality and testability (TDD)
• Participating in code reviews and driving engineering guidelines
• Collaborating closely with multi-functional teams across product, QA, and DevOps

What We’re Looking For

• 6+ years of experience in backend development using .NET / .NET Core
• Hands-on experience building large-scale web-based systems
• Solid understanding of microservices architecture
• Strong knowledge of relational databases
• Analytical attitude with strong problem-solving skills
• Ability to work independently while being a reliable teammate
• Continuous learning approach and adaptability to new technologies
• Good written and verbal English communication skills
• Familiarity with AI agents and workflows

Nice to Have

• Experience with Docker and Kubernetes
• Familiarity with TDD and automated testing approaches
• Understanding of event-driven architecture (Kafka, pub/sub patterns)
• Experience with database development and optimization

Compensation Philosophy

We offer a comprehensive pay and benefits package designed to stay competitive in the market, support your wellbeing, and recognise your contribution to our success. Our approach is underpinned by a pay-for-performance belief in rewarding individual impact. Your specific compensation package will be determined by factors such as your skills, experience, qualifications, and location.

Depending on your role and location, you may be eligible for annual bonuses and incentives, health and wellbeing benefits, paid time off, retirement plans, insurance coverage, and other local or statutory benefits.

Specific details about compensation and benefits for this position will be discussed during the recruitment process.