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Microsoft Ireland employs over 3,500 people across our Dublin and Belfast offices, representing over 90 different nationalities across a variety of roles including operations, sales, engineering, and product development. Embracing a hybrid working model the company encourages employees to be curious, to experiment, and to share the things they learn. Microsoft’s mission is to empower every person and every organisation on the planet to achieve more and the company lives out this mission every day through its engagement with businesses, government, partners, non-profit organisations, the start-up ecosystem, and society as a whole.

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Regional Technical Director - DC Operations

2026-04-05

Ireland, Dublin, Dublin +3 more

2 days / week in-office

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Software Engineering Intern

2026-04-03

Ireland, Dublin, Dublin

3 days / week in-office

Overview Come build community, explore your passions and do your best work at Microsoft with thousands of University interns from every corner of the world. This opportunity will allow you to bring your aspirations, talent, potential—and excitement for the journey ahead.As a Software Engineering Intern in the Identity and Network Access (IDNA) division, you will be at the forefront of preparing the most critical of our services for the era of Agentic AI. Our division serves over 100 million customers around the globe, building the authentication, authorization, and network security solutions that power some of the world’s most critical digital experiences. This is where you can make an impact on a truly global scale.You will work alongside talented engineers to help build the strong and secure foundation that Microsoft needs for the upcoming wave of AI. From enabling AI agents to authenticate and act on behalf of users, to ensuring that every identity and network interaction is protected, your work will directly shape how the world engages with intelligent systems. If you’re looking for a place where cutting-edge AI meets security at a massive scale, IDNA is the place to be. Responsibilities <div><div>Program Start Date: June 2026 (Internship duration is 12 weeks)</div><div style="text-align: justify;"><ul><li>Apply engineering principles to solve complex problems through sound and creative engineering. </li><li>Work with appropriate stakeholders to determine user requirements for a feature. </li><li>Quickly learns new engineering methods and incorporates them into work processes. </li><li>Seek feedback and apply internal or industry best practices to improve technical solutions. </li><li>Demonstrate skill in time management and completing software projects in a cooperative team environment. </li><li>Review current developments and proactively seek new knowledge that will improve the availability, reliability, efficiency, observability, and performance of products while also driving consistency in monitoring and operations at scale. </li></ul></div><div> #EIP </div></div> Qualifications <div>Required Qualifications: </div><div style="text-align: justify;"><ul><li>Currently pursuing Bachelor’s or Master’s degree in Computer Science, Engineering, or related field. <ul><li>Must have at least 1 semester/term remaining following the completion of the internship. </li></ul></li><li>You must be legally authorised to work in Ireland to be eligible for this role. <ul><li> (Legally authorised = Has citizenship or has been granted a valid visa or work permit) </li></ul></li><li>One year of programming experience in an object-oriented language. </li></ul></div><div><div>Preferred Qualifications: <ul><li style="text-align: justify;">Ability to demonstrate an understanding of computer science fundamentals, including data structures and algorithms </li></ul></div></div> This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled. <hr> 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 <a href="https://careers.microsoft.com/v2/global/en/accessibility.html">requesting accommodations.</a>

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Senior Software Engineer

2026-04-02

Ireland, Dublin, Dublin

3 days / week in-office

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.As a part of this role, as a Senior Software Engineer, you will be a part of the Identity for Services (ID4S) Team, part of Microsoft Entra. The mission of this team is to make it hard to get authentication and authorization wrong. We believe the tasks to get authentication and authorization right, actively preventing security incidents, and always being updated for a service should be straightforward and at the same time provide operational insights as part of the platform. As a team, we take meaningful steps daily to achieve our mission supporting developers, security operations, and administrators. Our solution is used across thousands of internal Microsoft services, and several of our components are available as open source on GitHub. Our main authentication SDK is written in .NET, and we focus on building robust, extensible APIs that minimize resource usage while maximizing security and resilience. We also embrace AI-powered workflows to accelerate development and improve efficiency. Our team is enthusiastic about exploring new ways to co-create with AI and leverage it for better engineering outcomes. There are still many challenges for us to solve to deliver on our mission, and to help us we are looking for an experienced Senior Software Engineer who thrives on building seamlessly integrated components running in high-scale services where security, resilience, memory, and performance are daily motivators. You work effectively across a large set of organizations and teams company-wide and operate with a customer-first mindset. As a team, we ensure our solution utilizes minimal resources, scrutinizes allocations, designs APIs to be configuration-driven and extensible, and collects telemetry to provide key insights for effective operations.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, #OAuth, #Authentication, #Authorization Responsibilities <ul><li>Develop and maintain authentication and authorization components for various platforms, including .NET (experience with Rust, Java, Golang, Python, Node.JS is a plus).</li><li>Collaborate with cross-functional teams such as leadership teams, product managers, service owners, and platform teams.</li><li>Make data-driven decisions using quantitative and qualitative insights.</li><li>Support service owners to ensure seamless integration and operational excellence.</li><li>Participate in code reviews, design discussions, and contribute to the overall improvement of our authentication libraries.</li><li>Explore and apply AI-assisted development practices to improve velocity and quality.</li></ul> Qualifications Required Qualifications: <ul><li>Bachelor's Degree in Computer Science or related technical field AND technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. </li><li>experience with Distributed Services</li></ul>Preffered Qualifications: <ul><li>experience with SDK and/or experience high scale services </li></ul>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 background and Microsoft Cloud background check upon hire/transfer and every two years thereafter. Understanding of authentication and authorization protocols, including OAuth, OpenID Connect, and SAML • Experience with .NET This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled. This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled. <hr> 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 <a href="https://careers.microsoft.com/v2/global/en/accessibility.html">requesting accommodations.</a>

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