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Matt Wallaert
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Principal Software Engineer

Microsoft

Microsoft

Software Engineering
Posted on Oct 28, 2025

Principal Software Engineer

Multiple Locations, Australia

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Date posted
Oct 28, 2025
Job number
1900054
Work site
2 days / week in-office
Travel
None
Role type
Individual Contributor
Profession
Software Engineering
Discipline
Software Engineering
Employment type
Full-Time

Overview

Office Data Loader team is hiring a Principal Software Engineer to build one of the most largest hyper-scale data ingestion service in the world for Office365 services.


With hundreds of millions of users using Office365 services, huge amount of data are generated every day. Data is mission critical for Office365 services. It helps engineering teams to understand the quality of live services, generate insights of feature usage and user behavior, troubleshoot bugs and issues. It also offers better visibility to product and management teams on business impacts, empowers product and scientist teams to build intelligence features.

To support the continuously growth of business needs from Office365, Office Data Loader team builds the hyper-scale distributed data ingestion service. We directly manages the ingestion service on more than 300,000 Exchange Online machines, which upload more than 30,000 TB data to our hyper-scale distributed storage every day. We also support the ingestion service running on even more machines for other Office365 products.

As the fundamental data ingestion service, we play an incredibly important role to make sure data uploading meet the privacy and compliance requirements. Sensitive data needs to be transformed to prevent privacy leaks or ne. Moreover, privacy leak detection and resolution are also built by us as the safeguard. User data that empowers Machine Learning scenarios has even higher requirements on the design of our service. Privacy and compliance are always our top priority, because Microsoft runs on Trust!

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.

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.
  • 6+ years of software engineering experience with a track record in building distributed systems or cloud services.
  • 1+ years expertise in designing and delivering scalable, reliable services in large, complex environments.
  • 1+ years hands-on experience with C#/.NET, C++, or similar languages; proficiency in RESTful API design and SDK development is highly desirable.

Preferred Qualifications (Ideal Candidate):

  • 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.
  • Understanding of cloud architecture, microservices, and asynchronous workflows.
  • Passion for developer experience, API design, and customer empathy.
  • Excellent problem-solving skills and ability to decompose complex problems into actionable solutions.
  • A growth mindset with demonstrated ability to lead through influence, collaborate across org boundaries, and deliver results.

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.

#M365Core

Responsibilities

  • Partners with appropriate stakeholders to determine user requirements for a set of scenarios.
  • Leads identification of dependencies and the development of design documents for a product, application, service, or platform.
  • Leads by example and mentors others to produce extensible and maintainable code used across products.
  • Leverages subject-matter knowledge of cross-product features with appropriate stakeholders (e.g., project managers) to drive multiple groups' project plans, release plans, and work items.
  • Holds accountability as a Designated Responsible Individual (DRI), mentoring engineers across products/solutions, working on-call to monitor system/product/service for degradation, downtime, or interruptions.
  • Proactively seeks new knowledge and adapts to new trends, technical solutions, and patterns that will improve the availability, reliability, efficiency, observability, and performance of products while also driving consistency in monitoring and operations at scale and shares knowledge with other engineers.

Benefits/perks listed below may vary depending on the nature of your employment with Microsoft and the country where you work.
Industry leading healthcare
Educational resources
Discounts on products and services
Savings and investments
Maternity and paternity leave
Generous time away
Giving programs
Opportunities to network and connect

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 and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.