CommerceTools Developer

CommerceTools Developer Miejsce pracy: Toruń Technologies we use Expected CommerceTools Java REST GraphQL Spring Boot About the project We are looking for an experienced CommerceTools Developer to join our eCommerce / Digital Customer Experience Competency Center. You will have the opportunity to build scalable headless commerce solutions focusing on innovative platforms for international clients. Your responsibilities Design, develop, and maintain CommerceTools-based backend services using Java / Spring Boot Extend CommerceTools functionalities through custom extensions, webhooks, and event-driven services Implement scalable APIs and microservices to integrate CommerceTools with other systems Optimize backend communication via GraphQL and REST APIs, ensuring high performance and security Ensure robust system architecture with a focus on scalability, high-performance, and maintainability Set up and manage CI/CD pipelines for Java-based microservices Promote best engineering practices: code reviews, unit/integration testing automated testing, documentation, and monitoring Our requirements Minimum 5 years of experience in developing Java-based applications, preferably in eCommerce domain Strong hands-on experience with CommerceTools (APIs, Merchant Center, product and catalog modeling) Solid understanding of microservices architecture, event-driven patterns, and serverless solutions Proven track record in headless commerce or composable commerce projects Experience with GraphQL and REST API development and integrations Proficiency in SQL & NoSQL databases Familiarity with Docker, Kubernetes, CI/CD pipelines, and cloud services Fluency in English (written and spoken) Residing in Poland required Optional CommerceTools certifications or previous enterprise-level implementations Experience with other eCommerce platforms This is how we work on a project Continuous Deployment Continuous Integration What we offer Great Place to Work since 2015 - it's thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People Recruitment stages Send your CV Talk to us about your expectations Learn more about our projects and choose the best Start your adventure with Sii Sii Sp. z o.o. Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 500 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii we create a friendly work environment.