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Job Details
Posted date: Dec 02, 2025
There have been 1947 jobs posted with the title of Senior Software Engineer all time at Microsoft.There have been 1947 Senior Software Engineer jobs posted in the last month.
Category: Software Engineering
Location: Warsaw, Mazowieckie
Employment type: Full-Time
Work location type: 0 days / week in-office – remote
Role: Individual Contributor
Description
OverviewCoreAI is at the forefront of Microsoft’s mission to redefine how software is built and experienced. We are responsible for building the foundational platforms, services, programming models, and developer experiences that power the next generation of applications using Generative AI. Our work enables developers and enterprises to harness the full potential of AI to create intelligent, adaptive, and transformative software.
The 1ES (One Engineering System) team is responsible for enabling the world's best engineering teams with world-class tools and systems that help them ship products their customers love.
Developers rely on many components to build software, including open-source packages, container images and infrastructure-as-code configuration files. Keeping those components up to date is paramount to every modern application’s security and imposes a big cost on development teams. Moreover, the evolving environment of cybersecurity is such that new threat vectors are discovered often and require developers to quickly update their code to keep it protected.
We are seeking a Senior Software Engineer to join our advanced security team. You’ll build tools that integrate into developer workflows—using secret scanning, dependency analysis, and CodeQL-based static analysis—to help engineers ship secure, high-quality code without slowing down.
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.
#CoreAI, #1ES
Responsibilities
Design, develop, test and support features, experiences. Lead and provide technical direction for the design and development of features, experiences, and solutions for end-to-end business scenarios. Support highly available services used by top companies and millions of developers on a daily basis.
Troubleshooting of complex issues through the entire tech stack including frontend and database layers. Participate in on-call rotations with your team. Triage and respond to issues and advocate for opportunities to improve service health. Mentor, pair, participate in code reviews, and delegate work to encourage the professional and technical growth of those around you.
Qualifications
Required Qualifications
You’ve done this before – Extensive software development experience. You can code - Demonstrable experience with C#, C++, Java or any other OOP language. You have good collaboration skills – Excellent analytical skills as well as communication skills both verbal and written. We are a distributed team, so we are extra mindful about communication. You’re a professional engineer – you understand that it’s not enough to write code that works; it also must be well-designed, easy to test, and easy to add to over time. You want to learn to get things done - Ability to understand unfamiliar code bases, debug client and service side applications (including database stored procedures). You're already experimenting - with the latest LLM-powered tools and excited to explore uncharted territory in developer productivity
Preferred Qualifications
Knowledge and experience with Microsoft Azure, AWS or similar cloud computing platforms is preferred. Experience with SQL performance tuning (preferably Microsoft SQL Server). Solid understanding of testing principles. Ability to prioritize and handle multiple tasks completely and independently and generate clarity in ambiguous situations. Troubleshooting skills across network, application, caching, queuing, load-balancing storage and distributed services layers.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.
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.
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