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Sr Backend Developer

Job in Brampton, Ontario, Canada
Listing for: TechDoQuest
Full Time position
Listed on 2026-06-12
Job specializations:
  • Software Development
    Backend Developer, Java Developer, Software Engineer, Cloud Engineer - Software
Job Description & How to Apply Below
We are seeking a proficient 6-to-12-year Java Backend Senior Developer in Java Spring Boot and Oracle ATG Web Commerce to join our engineering team.
The role requires hands-on backend development expertise a strong understanding of scalable microservices architecture and in-depth knowledge of Oracle ATG for enterprise grade ecommerce platforms.
Responsibilities include designing and developing backend services using Spring Boot and Java versions 8 to 21 and working within the Oracle ATG framework.
The role involves creating maintainable REST and SOAP APIs extending and customizing ATG components like Repositories Droplets Form Handlers and Commerce Pipelines and following clean code practices SOLID principles and domain driven design.
The developer will build data persistence layers using Spring Data JPA Hibernate and the ATG Nucleus framework manage concurrency transaction handling and performance tuning and integrate messaging queues using Kafka with enterprise security such as Kerberos.
Additional duties include containerizing applications with Docker deploying to Kubernetes automating builds with Azure Dev Ops securing APIs using OAuth JWT and TLS implementing access control optimizing performance with Redis and async processing and using Azure services like Blob Storage and Managed Identity.
The candidate will collaborate with frontend QA and Dev Ops teams in an Agile Scrum environment.
Strong technical, analytical and problem-solving skills
Excellent verbal and written communication skills
Ambitious with an ability to take initiative
You should be passionate about quality and writing clean, reusable, readable code that scales and performs well

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