Senior Application Developer

October 7, 2025

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The senior application developer will be responsible for solutioning design, testing, maintenance and implementation of a catalog of RESTful and SOAP web services exposing business functionality of our Subscription Management System in a centralized, secure, standardized and reusable way for external and internal clients.

Job Details

Accountabilities

• Contribute to the design of the next generation architecture, to meet the high growth needs of our company and customers for years to come
• Maintain close collaboration with architects to ensure compliance with architectural decisions and development standards
• Hands-on POCs and development with the technology stack at SiriusXM
• Keep current with the security aspects of the application
• Anticipate and resolve technical problems while instituting best practices and disciplines for software development
• Model system behaviours using best practice methods for communicating design
• Document system components and related interfaces
• Adhere to coding standards, following high-level standards across all levels of design work
• Provide feedback on proposed design solutions of peers; include accurate level-of-effort estimates
• Interpret, understand and explain system-level diagrams and designs
• Communicate to various lines of business at all levels of organization
• Ensure timely and accurate delivery of design and coding assignments
• Address performance issues and uphold performance requirements, ensuring high scalability of all applications as well as support of high traffic volume
• Comprehend compliance issues; demonstrate familiarity with securing web-based applicationsRecommend and promote new technologies and best practices
• Recommend new tools and utilities for design, development, testing and management of web-based applications
• Mentor junior developers and perform code reviews on deliverables, ensuring compliance with design and coding standards
• Provide second-level support.

Knowledge and Skill Requirements

Level of Education

• Completion of university or college program in related computer science discipline

Job Related Experience

• Minimum 8 years of application development experience
• Minimum 6 years development experience in Core Java
• Minimum 4 years development experience in RESTful web services using Spring Boot and SOAP services using Apache CXF
• Strong experience in automation testing using frameworks/libraries like Junit, Mockito, REST Assured and TestNG
• Strong knowledge of XML, XSL, processing and parsing
• Strong understanding of HTML, CSS, JavaScript, JS libraries such as jQuery, Angular JS or Ext JS and browser compatibility issues
• Strong structured methodology experience
• Strong OOO Design Pattern experience; experience implementing common design patterns
• Experience with web service design, including RESTful API design principles, SOAP Request and Response handling, web service security
• Experience with Highly Scalable Systems and working knowledge of performance profiling
• Experience with Financial and subscription management applications
• Experience with modernizing legacy systems
• Demonstrated proficiency in defining and documenting system components and related interfaces
• Use of UML in design conception
• Knowledge of web security standards and methods of application

Skills and Background

• Ability to deliver marginally to largely complex solutions with minimal supervision
• Solid organizational and planning skills
• Excellent time management skills with ability to prioritize and juggle
• Ability to work under shifting deadlines in fast-paced environment
• Excellent problem-solving skills
• Willingness to take initiative and follow through on projects
• Excellent interpersonal, verbal, written and presentation skills
• Ability to work independently as well as in team environment
• Preferred skills include:
• CRM
• SwaggerHub
• SQL and common database knowledge (Oracle)
• Basic Unix experience
• Source code control systems (Git)
• Build processes and Gradle/Maven
• Experience with large-scale, high volume, web-based applications
• Experience with highly scalable solutions on AWS cloud platform using event-driven, NoSQL and serverless technologies

Communications

• This position is frequently called upon to convince, persuade, motivate, or sell to others who typically have diverse and/or opposing viewpoints as well as to advise others on complex matters; requires extensive resourcefulness.

SiriusXM Canada is committed to equity in employment and programming.

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