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The Office Growth and Experiences team (OGX) is an experienced and highly passionate group at Microsoft that builds and maintains end-to-end ownership of Office across all platforms. Empowering developers with exceptional opportunities for ownership, autonomy, and professional growth as we tackle complex problems across Windows, Mac, iOS, and Android. OGX is responsible for a wide breadth of areas including best-in-class UX, next-gen collaboration, business-critical fundamentals, and driving user engagement for millions of users across our multiple ecosystems.

Within OGX we are specifically looking for a **Senior Software Engineer** with a strong focus on driving top-tier performance for iOS (and iPadOS) platforms. You will collaborate with teams across Office, lead architectural discussions to improve performance, and mentor other engineers as we continue to elevate Office’s capabilities on Apple’s mobile devices.

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

+ **Performance Ownership** : Lead end-to-end efforts to improve performance on iOS, including design, coding, and extensive instrumentation. Identify hotspots, architect solutions, and drive these improvements into production.

+ **Technical Leadership** : Serve as a technical leader and influencer within the team, shaping strategy for performance optimization. Proactively drive alignment on best practices, patterns, and technology choices to meet stringent performance goals.

+ **Mentorship & Collaboration** : As a senior member of the team, mentor other engineers (from new graduates to mid-level) in areas such as profiling, debugging, multithreading, and memory optimization. Collaborate across disciplines (e.g., PM, Design, Test) and geographies, ensuring we deliver end-to-end solutions efficiently.

+ **Mobile-Centric Mindset** : Advocate for the unique needs of mobile devices—network constraints, battery life, memory usage, and platform-specific capabilities—helping shape product direction and user experience on iOS.

+ **Data-Driven Development** : Rely on telemetry and analytics to identify top performance bottlenecks. Continuously measure success by gathering and interpreting performance metrics, using the data to inform ongoing improvements and future designs.

+ **Quality & Stability** : Contribute to designing robust test coverage for performance scenarios. Ensure that new and existing features maintain and improve user experience without regressions.

Qualifications

Required Qualifications:

+ Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java or Python OR equivalent experience.

+ Proven track record of analyzing and delivering performance improvements on commercial-scale applications, ideally for iOS or other mobile platforms.

+ Deep expertise in performance profiling, optimization techniques, concurrency models, debugging, and memory management.

+ Solid leadership and communication skills, with the ability to influence cross-functional stakeholders and articulate complex technical concepts effectively.

Preferred Qualifications:

+ Master'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 Bachelor'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 equivalent experience.

+ Experience using Objective-C, Swift, SwiftUI, or cross-platform frameworks, and comfortable with Apple’s performance tools (Instruments, Xcode Profiler, etc.).

+ Familiarity with shipping high-visibility, multi-million-user applications and working in large codebases.

+ Knowledge of areas like graphics engines, network protocols, compilers, sandboxing/security, or telemetry analytics is beneficial.

+ Experience working closely with geographically distributed teams and ability to manage communication in different time zones.

+ Passion for delivering best-in-class user experiences, with particular focus on the challenges and opportunities unique to mobile devices.

Software Engineering IC4 - The typical base pay range for this role across the U.S. is USD $119,800 - $234,700 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $158,400 - $258,000 per year. Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here: https://careers.microsoft.com/us/en/us-corporate-pay

Microsoft will accept applications for the role until July 10th, 2025.

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) .