Sr Software Engineer

About the Team The API Authentication team within Platform Security Engineering builds the security foundation that ensures every application, integration, mobile device, and AI agent connecting to ServiceNow can securely establish its identity. The team owns critical authentication capabilities including OAuth, OpenID Connect, API access policies, and mobile sign-in. As ServiceNow expands its AI capabilities, a key focus is enabling secure and trusted access for AI agents, making authentication seamless for users while keeping the platform protected. What you get to do in this role : • Design and develop scalable, maintainable, and reusable software components with a strong emphasis on performance and reliability. • Collaborate with product managers to translate requirements into well-architected solutions, owning features from design through delivery • Build intuitive and extensible user experiences using modern UI frameworks, ensuring flexibility for customer-specific needs. • Contribute to the design and implementation of new products and features while enhancing existing product capabilities. • Integrate automated testing into development workflows to ensure consistent quality across releases. • Participate in design and code reviews ensuring best practices in performance, maintainability, and testability. • Develop comprehensive test strategies covering functional, regression, integration and performance aspects • Foster a culture of continuous learning and improvement by sharing best practices in engineering and quality. • Promote a culture of engineering craftsmanship, knowledge-sharing, and thoughtful quality practices across the team. To be successful in this role you have : • Experience in leveraging critical thinking about how to integrate AI into work processes, decision-making, or problem-solving. This may include using AI-powered tools, automating workflows, analyzing AI-driven insights, or exploring AI’s potential impact on the function or industry. • 5 to 8 years of experience in software engineering, with a track record of delivering high-quality products. • Proficiency in Java, or similar object-oriented languages. • Experience with modern front-end frameworks such as Angular, React, or Vue. • Strong knowledge of data structures, algorithms, object-oriented design, design patterns, and performance optimization • Familiarity with automated testing frameworks (e.g., JUnit, Selenium, TestNG) and integrating tests into CI/CD pipelines • Understanding software quality principles including reliability, observability, and production readiness. • Ability to troubleshoot complex systems and optimize performance across the stack. • Experience with AI-powered tools or workflows, including validation of datasets, model predictions, and inference consistency. • Comfort with development tools such as IDEs, debuggers, profilers, source control, and Unix-based systems Why Join Us • Build and deliver high-impact software that powers digital experiences for millions of users. • Collaborate in a culture that values craftsmanship, quality, and innovation. • Work symbiotically with AI and automation tools that enhance engineering excellence and drive product reliability. • Be part of a culture that encourages innovation, continuous learning, and shared success. Work Personas We approach our distributed world of work with flexibility and trust. Work personas (flexible, remote, or required in office) are categories that are assigned to ServiceNow employees depending on the nature of their work and their assigned work location. Learn more here . To determine eligibility for a work persona, ServiceNow may confirm the distance between your primary residence and the closest ServiceNow office using a third-party s