Job Description 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. s 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 Full Stack Developer to join the Retail and Digital Channels Development Section at Circle K Global Development. The role sits on the boundary between our cloud-based integration platform and the POS System running in our stores, and covers both sides of that boundary.
On the platform and backend side you will: Design and implement backend services for the global retail sales platform — domain services, REST/SOAP interfaces, message-driven integrations and data access layers Design and implement POS functionality using our proprietary development stack (Spring-based backend, custom DSL) Build and maintain custom extensions, integrations and configurations within the retail platform, avoiding changes to the POS core wherever possible Work with Data Containers, Master Data distribution and the Service API layer for POS integrations Implement and configure business processes: checkout flows, payment handling, barcode processing rules and loyalty engine integrations Contribute to localization and fiscalisation of POS solutions for different European markets Ensure changes follow proper lifecycle management: versioning, environment promotion (DEV → TEST → PROD) On the App Enablement side you will: Develop custom web applications that are launched on the POS and run inside its dedicated embedded browser ( JxBrowser /Chromium), integrated through the App Enablement Framework and its JavaScript API bridge Build the backend endpoints and integration flows those applications depend on, so that a feature is delivered end to end by one team Extend and maintain our enterprise frontend applications (Employee Hub, Launchpad) Work within the constraints of in-store hardware and checkout ergonomics — touch input, limited screen real estate, operator speed You will collaborate with a Technical Product Owner, Solution Architects, QA Engineers, DevOps and numerous skilled developers in an agile, multinational environment.
Requirements Must have: 4+ years' Java development experience (Java 8+, ideally Java 11+), including JUnit, JPA/Hibernate, JAX-RS/JAX-WS Solid Spring Framework experience across both worlds: modern Spring (Boot, Data, Cloud) and legacy Spring with XML/Java-based configuration, annotations and custom extensions Experience with REST and SOAP interfaces, API documentation (Swagger/ OpenAPI ) and microservice communication patterns Experience with relational databases (PostgreSQL, SQL, data modelling) Working knowledge of at least one modern JavaScript framework (React, Angular, Vue.js, SAP UI5 or similar) and TypeScript — enough to build and maintain production frontend applications Practical knowledge of Git, CI/ CD and version control workflows (Jenkins, Sonar, Gr