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Circle K

Senior Java Developer

Circle K
Poland · Full-time · Not Applicable
Opis stanowiska pracy

Circle K Business Centre Warsaw is a shared service center supporting Circle K Europe across IT, Finance, Human Resources, Customer Service and other business areas. Circle K is part of Alimentation Couche-Tard Inc., one of the world’s largest convenience retail companies, operating globally across North America, Europe, Asia and the Middle East, with over 12,300 locations worldwide.

Our continuously growing development organization (300+ IT professionals) delivers large‑scale software solutions used daily by millions of customers across Europe and North America.

About The Team

Loyalty Crafters is a backend engineering team responsible for key components of Circle K’s loyalty platform, including EXTRA 2.0. The team develops scalable backend services powering loyalty programs, personalized offers, campaigns, and rewards across multiple European markets.

Key Responsibilities

  • Design and develop backend services within Circle K’s loyalty ecosystem
  • Build and maintain scalable, highly available microservices
  • Develop and evolve REST APIs used by mobile and web applications
  • Contribute to architectural and technical decisions
  • Ensure high code quality through reviews and best engineering practices
  • Mentor and support less experienced developers
  • Collaborate with Product Owners, QA Engineers, Architects and other teams

Required Skills And Experience

  • At least 5 years of commercial experience in Java backend development
  • Strong knowledge of Java (17+) and Spring ecosystem (Spring Boot, Spring Data, Security, Web/WebFlux, Integration)
  • Experience in designing and implementing RESTful APIs
  • Hands-on experience with microservices architecture
  • Experience with relational databases, especially PostgreSQL
  • Experience with non-relational/NoSql databases like Azure CosmosDB
  • Experience with asynchronous communication patterns (queues/topics),
  • Experience with CI/CD pipelines like GitHub Actions, Azure Pipelines or Jenkins
  • Experience with Docker and Kubernetes
  • Strong knowledge of Gradle 8+
  • Experience working in cloud environments (Microsoft Azure)
  • Knowledge of clean code principles and software design patterns
  • Experience working in Agile environments (Scrum)
  • Fluent English (B2/C1)

Nice to Have

  • Experience with event-driven architectures (e.g. Kafka)
  • Understanding of how AI‑based tools and solutions can support software development and product features
  • Knowledge of Domain-Driven Design (DDD)
  • Knowledge of Test-Driven-Develop (TDD)
  • Experience with observability and monitoring tools
  • Experience in loyalty, e-commerce or large-scale consumer platforms
  • Technical leadership or mentoring experience

What Do We Offer

  • Contract of employment
  • Annual bonus
  • Private medical care
  • Cafeteria Platform/Multisport
  • English lessons subsidized by the company
  • Group insurance
  • Attractive discounts for products and services at our stations
  • Employee stock purchase plan
  • Employee Assistance Program (Lyra)
  • Modern and convenient office that you can virtually visit here - https://goo.gl/maps/CLteHfYcdYMbdESq6
  • Trainings & possibility to develop skills in a wide international environment

When working with us you can depend upon it that you will not be judged on the grounds of race, national origin, gender, sexual orientation, disability, age, or other legally protected status. Oppositely – we believe that our diverse and inclusive culture helps us create an amazing atmosphere where everybody feels welcome.

Check who we are here: https://youtu.be/td-QGnNnvW0

Want to know even more about us? Take a look at our career page: https://workwithus.circlek.com/global/en/businesscentrewarsaw

Interested?

We encourage you to apply.

We know great companies are built from within, by great people like you. Come grow with us!We´re looking forward to your application.

We hereby inform that in the company Circle K Business Centre Poland sp. z o.o. with registered office in Warsaw an Internal Notification and Follow-up Actions Procedures applies.

The document describes rules for reporting violations of law by whistleblowers. Full content of the above-mentioned Procedure is available here: https://www.circlek.pl/o-nas/procedury-zgloszen

Key Skills

Ranked by relevance

microservices java restful apis spring boot kubernetes postgresql jenkins docker gradle kafka cloud scrum cicd tdd ddd
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Country Guide

Poland

Fast-growing Central European IT hub

Posted
May 09, 2026
Type
Full-time
Level
Not Applicable
Location
Warsaw
Company
Circle K

Industries

Retail

Categories

Engineering Information Technology

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