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Sr. Java Developer

Job in Mississauga, Ontario, Canada
Listing for: MacDonald Search Group
Full Time position
Listed on 2026-01-13
Job specializations:
  • Software Development
    Cloud Engineer - Software, Senior Developer, Software Engineer, DevOps
Salary/Wage Range or Industry Benchmark: 100000 - 120000 CAD Yearly CAD 100000.00 120000.00 YEAR
Job Description & How to Apply Below
Mac Donald Search Group has been asked by our telecommunications / advanced network technology client to find a first-class Senior Software Engineer to join their team in the Greater Toronto Area
. The primary responsibility of this role will be to design and develop cloud-native, microservices-based software that enables next-generation applications on advanced 5G networks.
Some of what you will do in this role includes:
  • Design, develop, and enhance core software modules using Java and modern enterprise frameworks
  • Build scalable, microservices-based applications using Spring Boot
  • Develop and integrate messaging systems such as Kafka, Rabbit

    MQ, or cloud-based pub/sub services
  • Work with both relational and non-relational databases, including data modeling for enterprise-scale products
  • Deploy and manage applications using cloud and containerization technologies (AWS, GCP, Docker, Kubernetes)
  • Participate in CI/CD, TDD, and paired programming practices
  • Collaborate closely with Product Owners and business stakeholders to understand and refine requirements
  • Participate in Agile ceremonies and maintain clear status reporting
  • Troubleshoot complex issues by analyzing logs, metrics, and system behavior to identify root causes
  • Research new technologies and contribute to architectural decisions across all stages of development
  • You should have the following in your background to apply:
  • 5+ years of hands-on experience in Java and J2EE development, with strong knowledge of design patterns and frameworks
  • Proven experience building server-side applications and microservices-based architectures
  • Experience with messaging platforms such as Kafka, Google Pub/Sub, or RabbitMQ
  • Strong background working with cloud platforms and containerized environments
  • Experience with CI/CD pipelines, test-driven development, and modern development workflows
  • Familiarity with Agile/Scrum methodologies and tools such as Jira, Confluence, and Git
  • Strong debugging and problem-solving skills with the ability to investigate complex system issues
  • Self-starter mindset with the ability to work independently and communicate effectively
  • Domain experience considered a strong asset:
  • Telecommunications domain knowledge, particularly related to 5G
  • Experience designing or implementing Telecom OSS/BSS systems
  • Hands-on experience with network management systems (OSS, NMS, EMS) and protocols such as SNMP, NETCONF, YANG, FCAPS, and CFM
  • Pay band - $100,000-$120,000
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