The RTC (Real-Time Communications) Runtime Infrastructure within IC3 (Intelligent Conversation and Communication Cloud) serves as the foundational layer that powers real-time communication services across Microsoft Teams and Azure Communication Services. **Software Engineer** responsibilities span across service orchestration, reliability, modernization, security and operational excellence. The RTC Infra team is spearheading a comprehensive modernization effort to enhance platform reliability, scalability, compliance, and developer productivity across IC3. A cornerstone of this transformation is the Linux ARM initiative; a major modernization and cost-efficiency program focused on reshaping Microsoft’s real-time communications infrastructure. This initiative is designed to #1 Migrate IC3 services from Windows containers to Linux, unlocking gains in performance, reliability, and cost efficiency, #2 Transition from x64 to ARM64 architecture to reduce compute costs and diversify silicon dependencies and #3 Enable services to run seamlessly on both x64 and ARM64 architectures with minimal manual intervention, leveraging AI-assisted tooling. In addition to Linux ARM, the team is driving several other critical initiatives, including but not limited to resiliency engineering, chaos engineering and observability improvements, authentication stack standardization, .NET Core migration, developer productivity enhancements, and compliance and security modernization. These efforts collectively support IC3’s broader goals of infrastructure simplification, cost optimization, and operational excellence. Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond. **Responsibilities** + Works with appropriate stakeholders to determine user requirements for a set of features. + Contributes to the identification of dependencies, and the development of design documents for a product area with little oversight. + Creates and implements code for a product, service, or feature, reusing code as applicable. + Contributes to efforts to break down larger work items into smaller work items and provides estimation. + Acts as a Designated Responsible Individual (DRI) working on-call to monitor system/product feature/service for degradation, downtime, or interruptions and gains approval to restore system/product/service for simple problems. + Remains current in skills by investing time and effort into staying abreast of current developments that will improve the availability, reliability, efficiency, observability, and performance of products while also driving consistency in monitoring and operations at scale. + Drive modernization initiatives, including migration to Linux and ARM architectures, and adoption of AI-assisted tooling. + Collaborate with partner teams to ensure seamless integration and high availability of RTC services. + Implement and maintain best practices for service orchestration, monitoring, incident response, and continuous improvement. + Ensure compliance with Microsoft’s security, privacy, and operational standards. **Qualifications** **Required Qualifications:** + Bachelor's Degree in Computer Science or related technical field AND 2+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python + OR equivalent experience. + 2 years experience with technical fundamentals in distributed systems, databases, or cloud-native architecture. **Other Requirements:** Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings: + **Microsoft Cloud Background Check** : This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter. **Preferred Qualifications:** + Proficient experience in distributed systems, cloud infrastructure, or real-time communications. + Proficiency in C#, C++, Go, or similar languages; experience with Linux and containerization (Docker, Kubernetes) is a plus. + Familiarity with ARM64 architecture and cloud platforms (Azure preferred). + Demonstrated ability to drive modernization and automation initiatives. Software Engineering IC3 - The typical base pay range for this role across Canada is CAD $85,000 - CAD $166,800 per year. Find additional pay information here: https://careers.microsoft.com/v2/global/en/canada-pay-information.html Microsoft will accept applications and processes offers for these roles on an ongoing basis. Microsoft is an equal opportunity employer. Consistent with applicable law, all qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations (https://careers.microsoft.com/v2/global/en/accessibility.html) .