Principal Software Engineer - Excel Web (IDC)

Overview Microsoft Excel is the surface for World’s information, used by millions of people across the planet every day as their go-to decision making tool. The Excel team in India is working on key enhancements to Microsoft Excel in having the best performance, reliability, features and ease of use.

We are looking for a seasoned
Principal Software Engineer to join the Excel Web team at IDC. This role is pivotal in driving performance, reliability, and architectural excellence across Excel Web. As Excel continues to scale globally, we need strong technical leaders who can identify systemic bottlenecks, lead cross-functional initiatives, and deliver measurable improvements to user experience and operational efficiency.

If you are excited about working on challenges around fundamentals, scale, cloud services and user experience in a fast paced but fun environment, then we would love to talk to you!

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

• Architect and implement scalable, performant, and reliable systems for Excel Web, with a focus on fundamentals.

• Lead deep technical investigations into performance regressions, reliability gaps, and architectural debt.

• Drive cross-team initiatives that span multiple components and disciplines, influencing partner teams across Microsoft.

• Champion AI-driven engineering practices, including AI-assisted bug triage, code generation, and live site mitigation strategies.

• Collaborate with PMs and EMs to shape product direction, ensuring alignment with customer needs and business goals.

• Mentor and grow other engineers, fostering a culture of technical excellence and continuous learning.

Qualifications Required Qualifications:

• Bachelor's Degree in Computer Science or related technical field AND 10. years technical engineering experience with coding in languages including, but not limited to, C, C.., C., Java, JavaScript, or Python

+ OR equivalent experience.

• Deep expertise in web technologies, distributed systems, and performance optimization.

• Proven ability to drive architectural decisions and influence at org-wide scale.

• Experience with AI/ML in engineering workflows is a strong plus.

• Solid communication skills and ability to work across disciplines and geographies.

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.

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

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.