Java Backend Developer

Join to apply for the Java Backend Developer role at J&M Group Join to apply for the Java Backend Developer role at J&M Group Get AI-powered advice on this job and more exclusive features. Job DescriptionWe are seeking a proficient Backend Developer with experience in Java, Spring Boot, and Oracle ATG Web Commerce to join our engineering team. The role demands hands-on backend development experience, strong architectural understanding of scalable microservices, and Oracle ATG knowledge for enterprise-grade e-commerce platforms. Job DescriptionWe are seeking a proficient Backend Developer with experience in Java, Spring Boot, and Oracle ATG Web Commerce to join our engineering team. The role demands hands-on backend development experience, strong architectural understanding of scalable microservices, and Oracle ATG knowledge for enterprise-grade e-commerce platforms.Key ResponsibilitiesDesign and develop backend services using Spring Boot, Java 8-21, and Oracle ATG Web Commerce framework. Create scalable, maintainable RESTful and SOAP APIs integrated with ATG-based commerce systems. Extend and customize ATG components like Repositories, Droplets, Form Handlers, and Commerce Pipelines. Implement SOLID principles, clean code practices, and domain-driven design across services. Build data persistence layers using Spring Data JPA, Hibernate, and ATG's Nucleus framework. Handle transaction management, deadlocks, and concurrency using Java Concurrency and Spring patterns. Integrate messaging queues using Kafka, with enterprise security protocols (e.g., Kerberos). Containerize applications with Docker, deploy on Kubernetes, and automate builds with Azure DevOps Pipelines. Secure APIs and services using OAuth 2.0, JWT, TLS Certificates, and implement role-based access control. Optimize backend performance through Redis caching, database tuning, and async/thread pool tuning. Leverage Azure Blob Storage, Managed Identity, and other cloud services for scalable file handling and observability. Collaborate with frontend, QA, and DevOps teams in Agile/Scrum environments. Technical Skills & ProficienciesLanguages & Frameworks: Java 8-21, Spring Boot, Lombok E-Commerce Platform: Oracle ATG Web Commerce (Nucleus, Droplets, Repositories, BCC, Form Handlers) API Development: REST, SOAP (JAX-WS), Swagger/OpenAPI ORM & Databases: Spring Data JPA, Hibernate, Stored Procedures Architecture: Microservices, API Gateway, OAuth 2.0, JWT Concurrency & Async: Executor Service, Completable Future, @Async, @Scheduled Messaging: Kafka, Retry Strategies, Offset Handling Containerization: Docker, Kubernetes, Helm Caching & Performance: Redis, JVM Optimization, @Cacheable DevOps: Git, Azure Pipelines, SonarQube, CI/CD with YAML Cloud & Azure: Blob Storage, AKS, Managed Identity Security: OAuth 2.0, Kerberos, JWT, Base64, TLS/SSL Soft SkillsStrong debugging and problem-solving skills Ability to work independently on Oracle ATG customizations Excellent communication, stakeholder management Commitment to code quality, documentation, and testing Preferred SkillsExperience integrating ATG with third-party APIs and payment systems Exposure to ATG Commerce modules like Cart, Checkout, Promotions, Personalization Knowledge of ATG deployment and configuration in Docker/K8s Familiarity with ATG and headless commerce approaches Seniority level Seniority level Entry level Employment type Employment type Contract Job function Job function Information Technology Industries IT Services and IT Consulting Referrals increase your chances of interviewing at J&M Group by 2x Sign in to set job alerts for “Java Software Engineer” roles. Software Engineer, Backend (All Levels / All Teams) Software Engineer I, Entry Level (Fall 2024-Spring 2025) - Toronto Software Developer Full Stack (Junior) Frontend Software Engineer (Remote - Canada) We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. #J-18808-Ljbffr