Senior Software Developer - Authentication Team

Your work days are brighter here. We’re obsessed with making hard work pay off, for our people, our customers, and the world around us. As a Fortune 500 company and a leading AI platform for managing people, money, and agents, we’re shaping the future of work so teams can reach their potential and focus on what matters most. The minute you join, you’ll feel it. Not just in the products we build, but in how we show up for each other. Our culture is rooted in integrity, empathy, and shared enthusiasm. We’re in this together, tackling big challenges with bold ideas and genuine care. We look for curious minds and courageous collaborators who bring sun-drenched optimism and drive. Whether you're building smarter solutions, supporting customers, or creating a space where everyone belongs, you’ll do meaningful work with Workmates who’ve got your back. In return, we’ll give you the trust to take risks, the tools to grow, the skills to develop and the support of a company invested in you for the long haul. So, if you want to inspire a brighter work day for everyone, including yourself, you’ve found a match in Workday, and we hope to be a match for you too. About the Team At Workday, the Authentication Security team is the cornerstone of our user trust and safety. We build and maintain the critical services that act as the front door to our entire ecosystem. Our mission is to provide secure, scalable, and seamless access for millions of users, protecting their data while enabling a frictionless experience. We are a team of passionate engineers dedicated to solving complex challenges in the authentication and identity space! About the Role Join our Authentication Security team as an experienced Software Developer to design and build highly resilient authentication systems for our platform. We’re looking for a hands-on technical leader who loves building highly scalable, distributed security infrastructure.You will work closely with the team to architect and implement critical authentication standards (OIDC, SSO, SAML, FIDO), while ensuring our services remain resilient under heavy load. As a technical leader you will thrive in ambiguity, turning abstract security requirements into concrete, robust solutions. If you are a problem-solver who enjoys navigating complex security architecture, and mentoring others to do the same, this is your opportunity to shape the future of our platform. What You'll Do Define the vision, strategy, and roadmap for the security platform in partnership with engineering and product leadership. Design and build robust, high-performance services, libraries, and APIs to ensure secure and reliable authentication. Develop tools to improve code reliability and streamline the adoption of our security services. Leverage and champion good software design patterns and principles. Collaborate closely with support and engineering teams to resolve customer issues, fix bugs, and implement new features. Contribute to a collaborative team culture that fosters iteration and innovation. Demonstrate excellence when working autonomously, with an understanding of when to seek support from team members. Participate in on-call rotation and lead incident response for services to ensure quick service restoration during events. Possess the ability to work effectively with both technical and non-technical stakeholders to deliver high-value results. About You About You Basic Qualification 7+ years of software development experience, leading technical initiatives, designing complex systems, and ensuring the scalability and maintainability of software products 7+ years of experience in object oriented programming such as Java, Scala, Kotlin Deep understanding of patterns for resilient services such as backpressure, idempotency, timeouts, and circuit-breaking strategies. Deep expertise and experience in API Development (REST) and designing and building microservices Bachelor's degree in a computer related field or equivalent work experience Strong understanding of IAM Concepts. Knowledge/ experience with developing security, identity, authentication, authorization solutions and open standards such as SAML and OIDC Other Qualification Expert knowledge of identity protocols and standards, including OAuth 2.0, OpenID Connect (OIDC), and SAML. Knowledge of different data storage technologies, such as Redis and MySQL. Working experience with source control and CI/CD tools such as Git, BitBucket, Jenkins. Knowledge of Docker and container orchestration frameworks such as Kubernetes. Experience with observability and monitoring tools such as Prometheus, Grafana, or OpenTelemetry. Proven ability in writing technical design documents and collaborating within a software development team Experience with relational database technologies (e.g. PostgreSQL, MySQL, or SQL Server) Workday Pay Transparency Statement (For EU Locations Only) Listed below is the base salary range applicable to this position. Workday pay ranges (and the precise pay offered to the successful candidate) are based on a number of objective criteria such as relevant experience and skills, and educational qualifications, level of responsibility, demands of the role, work location and business need. As a part of the total compensation package, this role may be eligible for the Workday Bonus Plan or a role-specific commission/bonus, as well as annual refresh stock grants awarded by Workday Inc. For more information regarding Workday’s comprehensive benefits, please click here . Primary Location Base Pay Range: €86,400 EUR - €129,600 EUR Ireland Our Approach to Flexible Work With Flex Work, we’re combining the best of both worlds: in-person time and remote. Our approach enables our teams to deepen connections, maintain a strong community, and do their best work. We know that flexibility can take shape in many ways, so rather than a number of required days in-office each week, we simply spend at least half (50%) of our time each quarter in the office or in the field with our customers, prospects, and partners (depending on role). This means you'll have the freedom to create a flexible schedule that caters to your business, team, and personal needs, while being intentional to make the most of time spent together. Those in our remote "home office" roles also have the opportunity to come together in our offices for important moments that matter. Pursuant to applicable Fair Chance law, Workday will consider for employment qualified applicants with arrest and conviction records. Workday is an Equal Opportunity Employer including individuals with disabilities and protected veterans. Workday is committed to providing reasonable accommodations for qualified individuals during our application process, in order to perform one or more essential functions of their job, as well as regarding the use of AI tools for employment decision-making to any degree. Please see below for more details including how to request an accommodation as a qualified veteran, due to a disability or for religious reasons, or as otherwise provided under applicable law. Workday prohibits taking adverse action against any candidate or employee for reporting a possible violation of this policy, requesting one or more work accommodations, exercising a privacy right, or cooperating in an investigation in accordance with applicable law. Any employee who retaliates against a candidate or employee for doing so may be subject to disciplinary action, up to and including termination of employment, to the fullest extent allowable under applicable law. If you require a reasonable accommodation, you may email accommodations@workday.com , as far in advance as possible. Are you being referred to one of our roles? If so, ask your connection at Workday about our Employee Referral process! At Workday, we value our candidates’ privacy and data security. 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