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Matt Wallaert
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Senior Software Engineer- Identity

Microsoft

Microsoft

Software Engineering
Dublin, Ireland
Posted on Feb 13, 2026
Overview

Security represents the most critical priorities for our customers in a world awash in digital threats, regulatory scrutiny, and estate complexity. Microsoft Security aspires to make the world a safer place for all. We want to reshape security and empower every user, customer, and developer with a security cloud that protects them with end to end, simplified solutions. The Microsoft Security organization accelerates Microsoft’s mission and bold ambitions to ensure that our company and industry is securing digital technology platforms, devices, and clouds in our customers’ heterogeneous environments, as well as ensuring the security of our own internal estate. Our culture is centered on embracing a growth mindset, a theme of inspiring excellence, and encouraging teams and leaders to bring their best each day. In doing so, we create life-changing innovations that impact billions of lives around the world.

EEID DevEx team focuses on delivering secure, scalable, and developer‑friendly identity experiences within Microsoft Entra External ID. We build and evolve native authentication capabilities, APIs, SDKs, and platform integrations that enable customers and partners to securely onboard, authenticate, and manage external users across modern applications. By partnering closely with platform, security, and customer‑facing teams, we translate complex identity and security requirements into simplified, high‑quality solutions that accelerate developer adoption while upholding Microsoft Security’s standards for trust, compliance, and resilience. Our work empowers developers to integrate identity securely and confidently, helping protect end users while enabling innovation at global scale.

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.

#MSFTSecurity, #IDNA



Responsibilities

Design and deliver highly reliable, multi‑tenant identity services that operate at scale, balancing performance, security, and extensibility to meet the needs of diverse enterprise and consumer workloads. Own complex service components end‑to‑end, from API and data model design through implementation, testing, deployment, and live‑site operations, with a strong emphasis on correctness, resilience, and diagnosability. Drive technical quality and engineering excellence, setting a high bar for clean architecture, well‑factored code, automated testing, and long‑term maintainability across the team. Partner closely with product management, design, and adjacent engineering teams to translate customer and platform requirements into pragmatic, scalable technical solutions. Influence platform and API direction by identifying architectural gaps, proposing improvements, and helping shape the long‑term evolution of our authentication and developer experience stack. Contribute to a strong engineering culture through design reviews, mentoring, and technical leadership, enabling others to deliver with confidence and operate effectively at scale.



Qualifications

Required qualifications

  • Bachelor’s degree in Computer Science, Engineering, or a related technical field
  • Solid professional software engineering experience is essential.
  • Proven hands-on experience designing, building, and operating production services, with strong coding skills in one or more modern languages such as C#, Java, JavaScript/TypeScript, or similar.
  • Extensive experience designing scalable, reliable, multi-tenant services, including API design, data modelling, and distributed system fundamentals.
  • Strong understanding of service reliability, security, performance, and maintainability, with experience owning systems through deployment and live-site operations.
  • Demonstrated ability to collaborate across engineering, product, and design to translate customer and platform requirements into practical technical solutions.

    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 background and 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.