Circle K Business Centre is a shared service center which supports Circle K Europe operations through a wide range of services within Finance & Control, Information Technologies, Human Resources, Transport Fuel and Customer Service. 

Circle K is part of the Canadian company Alimentation Couche Tard Inc. (Couche-Tard), one of the world's largest joint-stock convenience retail companies, listed on the Toronto Stock Exchange (TSE). It has operations in North America, Europe, Asia and the Middle East. It has approximately 12,300 sites across its network in North America (U.S. and Canada), Europe (Norway, Sweden, Denmark, Ireland, Poland, the Baltics), Asia and the Middle East. We are a family of more than 100,000 merchants making it easy for our customers around the world. 

In the last few years, our continuously growing development teams (currently over 200 skilled IT professionals) have successfully implemented and deployed various software solutions to Circle K customers across Europe and North America. Among the solutions you will find web applications, native mobile applications and technical components. 

What you will be working on 

We are looking for a Retail/POS Developer to join Retail and Digital Channels Development Section at Circle K Global Development, responsible for developing, extending, and maintaining the software point-of-sale platform deployed across Circle K's European store network. 

As a Retail/POS Developer, you will work within the POS Core team to: 

• Design and implement POS functionality using proprietary development stack (Spring-based backend, SAP UI5 microfrontend, custom DSL)

• Build and maintain custom extensions, integrations, and configurations within the retail platform without modifying the core POS where possible

• Develop custom frontend applications integrated into POS via the App Enablement Framework (JxBrowser/Chromium)

• Implement and configure business processes: checkout flows, payment handling, barcode processing rules, and loyalty engine integrations 

• Work with Data Containers, Master Data distribution, and Service API layer for POS integrations 

• Contribute to localization and fiscalisation of POS solutions for different European markets 

• Collaborate with Technical Product Owner, Solution Architects, QA Engineers and DevOps in an agile, multinational environment 

• Ensure configuration changes follow proper lifecycle management: versioning, environment promotion (DEV → TEST → PROD) 

You will work with us using the specialized proprietary environment, collaborating with Technical Product Owner, numerous skilled Developers, Testers, DevOps and Architects as new colleagues, working in an agile, multinational environment. 

Requirements 

Must have: 

• 3+ years' experience in Java development (Java 11+), including Spring Framework (XML/Java config, annotations, custom extensions) 

• Hands-on experience with SAP UI5 or comparable enterprise frontend frameworks (OpenUI5, SAP Fiori) or similar frontend framework 

• Solid understanding of POS systems, retail checkout flows, and payment processing concepts 

• Experience with REST API integration and microservice communication patterns 

• Proficiency with Eclipse IDE (2020 or compatible) — required by the POS development toolchain 

• Ability to read, maintain, and extend code generated by proprietary DSLs 

• Strong configuration management skills: XML-based Spring config, property files, and environment-specific deployments 

• Experience working with relational databases (SQL, data modelling) 

• Practical knowledge of Git, CI/CD basics and version control workflows 

• Fluent English — level B2/C1 minimum 

Nice to have:   

• Prior experience with POS software OmniPOS / CLOUD4RETAIL platform 

• Knowledge of fiscalisation requirements in European markets (Poland, Baltic states, Nordics) 

• Experience with JxBrowser / Chromium-based embedded browser engines 

• Frontend development skills: React, Angular, Vue.js, or any modern JavaScript framework (for Custom App development via App Enablement Framework) 

• Familiarity with SAP Storemanager, POS systems, or similar retail configuration tooling 

• Experience in loyalty systems integration, mobile payment flows, or self-checkout solutions 

• Knowledge of TDD / BDD approaches (JUnit, Mockito, Cucumber) 

• Understanding of edge computing architectures (central ↔ edge ↔ checkout) 

Technology Stack 

Working as a Developer at Circle K, you will operate within the following technology environment: