Principal Software Engineer

Are you interested in building real-time communication technologies that enable voice, video, and AI-powered experiences across Microsoft products?

The RTC Client & Core Media team develops foundational Real-Time Communications (RTC) technologies across mobile, web, desktop, and virtual desktop environments. Our team builds secure, reliable, and high-performance client platforms and software development kits (SDKs) that enable communication experiences across Microsoft products.

We are looking for a Principal Software Engineer to help architect and build the next generation of real-time communication technologies, including platforms that support AI-powered and agentic communication experiences. In this role, you will provide technical leadership across complex engineering initiatives involving native mobile and client platforms, real-time communications, developer infrastructure, automation, and AI-assisted engineering.

You will work across organizational boundaries to define technical direction, develop extensible architectures, improve engineering systems and practices, and deliver reliable solutions across Windows, iOS, and Android ecosystems. You will collaborate with engineering, product, security, privacy, and compliance teams to translate complex requirements into scalable technical solutions.

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

• Lead the architecture, design, development, and delivery of complex software systems and client platform capabilities supporting real-time communications across mobile, desktop, web, and virtual desktop environments.
• Design and build secure, reliable, diagnosable, maintainable, and reusable native client libraries and SDK capabilities across Windows, iOS, and Android ecosystems.
• Define and drive technical solutions across multiple components and teams, identifying dependencies, evaluating architectural tradeoffs, and building alignment with engineering and partner organizations.
• Develop and improve AI-assisted and agentic engineering capabilities that support software development activities such as investigation, testing, validation, code review, reliability, and incident response.
• Improve engineering infrastructure, documentation, build and test automation, validation mechanisms, and development workflows to enable reliable and efficient AI-assisted engineering.
• Develop reusable engineering patterns, tools, and capabilities that can be adopted across teams while balancing common platform requirements with domain-specific needs.
• Establish engineering practices and validation mechanisms to evaluate the quality, reliability, security, and effectiveness of AI-assisted or automated engineering workflows, including appropriate human review.
• Collaborate with engineers, product managers, and partner teams to understand requirements, document technical designs, implement features, develop testing strategies, manage feature rollouts, and establish monitoring and telemetry.
• Use telemetry, diagnostics, experimentation, and production data to understand system behavior, evaluate engineering tradeoffs, and identify opportunities to improve performance, reliability, security, and customer experiences.
• Participate in design and code reviews and provide technical leadership and mentoring to engineers across the organization.
• Participate in on-call and site reliability activities, including investigating and responding to live-site issues and identifying engineering improvements that increase reliability and supportability.
• Collaborate across Microsoft with engineering, security, privacy, compliance, and product teams to deliver solutions that meet technical and business requirements.
• Make data-informed technical tradeoffs across competing requirements, balancing short-term needs with longer-term architecture, maintainability, and engineering quality.
• Embody our culture and values.

Qualifications

Required Qualifications

• Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python

OR equivalent experience.

Other Requirements

Ability to meet Microsoft, customer, and/or government security screening requirements is 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

• Master's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelor's Degree in Computer Science or related technical field AND 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience.
• Experience designing and developing production software for native mobile or client platforms, including Android, iOS, or Windows.
• Experience architecting and delivering native mobile or desktop SDKs, libraries, or platform components from design through production.
• Experience designing complex software architectures spanning multiple components, platforms, or engineering teams.
• Experience with real-time communications, media, networking, or related high-performance client technologies.
• Experience with software development lifecycle automation, developer infrastructure, or AI-assisted engineering workflows.
• Experience improving the reliability, performance, security, maintainability, or operational excellence of production software.
• Experience providing technical leadership through architecture and design reviews, cross-team collaboration, and mentoring.

Software Engineering IC5 - The typical base pay range for this role across Canada is CAD $142,400 - CAD $257,500 per year.

Find additional pay information here:

https://careers.microsoft.com/v2/global/en/canada-pay-information.html

Software Engineering IC5 - L'échelle salariale de base typique pour ce rôle dans l'ensemble du Canada est de 142,400 $ CAD à 257,500 $ CAD par année.

Pour plus d'information au sujet de la rémunération, veuillez cliquer ici:

https://careers.microsoft.com/v2/global/en/canada-pay-information.html

Ce poste sera ouvert pendant au moins cinq jours et les candidatures seront acceptées de façon continue jusqu’à ce que le poste soit pourvu.

This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.

Microsoft est un employeur offrant l’égalité d’accès à l’emploi. Tous les candidats qualifiés seront pris en considération pour l’emploi, sans égard à l’âge, à l’ascendance, à la citoyenneté, à la couleur, aux congés médicaux ou familiaux, à l’identité ou à l’expression de genre, aux renseignements génétiques, à l’état d’immigration, à l’état matrimonial, à l’état de santé, à l’origine nationale, à un éventuel handicap physique ou mental, à l’affiliation politique, au statut de vétéran protégé ou au statut militaire, à la race, à l’ethnie, à la religion, au sexe (y compris la grossesse), à l’orientation sexuelle ou à toute autre caractéristique protégée par les lois, ordonnances et règlements locaux applicables. Si vous avez besoin d’aide avec des accommodements religieux et/ou d’un accommodement raisonnable en raison d’un handicap pendant le processus de candidature, apprenez-en plus sur la demande d’accommodement.

Microsoft is an equal opportunity employer. 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 with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.