Senior Engineer

Senior Engineer – Identity Platform Job Description CoStar Group is a leading global provider of commercial and residential real‑estate information, analytics and online marketplaces. Domain is a leading property marketplace reaching 7 million Australians each month. About the Role Enables secure innovation by building and maintaining robust authentication and authorisation systems. Enhances operational security through the implementation of best practices in identity and access management (IAM). Ensures scalability and reliability of identity systems, supporting our commitment to customer trust and business continuity. Drives digital transformation by championing the adoption of modern identity solutions and secure‑by‑design principles. Improves time‑to‑market by developing efficient and reusable identity solutions. Technical Skills Deep expertise in identity platforms (e.g., Okta, Auth0, WorkOS) and developing custom authentication systems. Advanced knowledge of OAuth2, OpenID Connect, SAML, RBAC, ABAC, and REBAC for secure access management. Proficiency in languages such as C#, TypeScript, or Python with experience implementing secure coding practices. Mastery of Infrastructure as Code (IaC) tools (e.g., Terraform, AWS CDK) for deploying identity solutions. Expertise in deploying identity services on containerised platforms like Kubernetes, ensuring scalability and reliability. Advanced knowledge of CI/CD tools and practices, focusing on integrating security checks and shift‑left testing principles. Extensive experience with RESTful APIs, GraphQL, and secure API management for Authentication and Authorisation services. Strong understanding of identity‑system architectures, including microservices, serverless computing, and event‑driven designs. Comprehensive knowledge of cloud security, OWASP guidelines, DevSecOps, and advanced cryptographic practices. Proficiency with monitoring tools such as Elastic and OpenTelemetry for identity‑system health monitoring and proactive threat detection. Experience with major cloud platforms (AWS, Azure, GCP), focusing on implementing cloud‑native identity and access‑management solutions. Experience in creating and managing developer portals, API gateways, and identity self‑service platforms for streamlined integration. Soft Skills Excellent problem‑solving and analytical skills. Strong communication skills, with the ability to explain complex security and identity concepts to both technical and non‑technical stakeholders. Proven ability to work effectively in cross‑functional teams. Self‑motivated with a passion for continuous learning and staying updated with the latest identity, security, and cloud trends. Qualifications Bachelor’s degree or higher in Computer Science, Software Engineering, Cybersecurity, or an equivalent professional background. Advanced cloud certifications (e.g., AWS Certified Security – Specialty, Google Professional Cloud Security Engineer). 5+ years of experience in identity engineering, security engineering, or related roles, with a strong focus on authentication and authorisation systems. What’s Next We’ll give your application the thoughtful attention it deserves and get back to you as soon as possible. If there’s a match, one of our recruitment consultants will reach out—so keep your phone handy We’re genuinely excited about the chance to work together and make a meaningful impact. Diversity, Equity & Inclusion We are devoted to fostering a diverse and supportive work environment and warmly welcome applications from Aboriginal and Torres Strait Islander peoples, people with disability, and people of all ages, ethnicities, cultures, faiths, sexual orientations, and gender identities. If you have accessibility needs or require accommodations during the application process, please let us know, and we’ll ensure you receive the support you need. Equal Employment Opportunity CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug‑free workplace and perform pre‑employment substance abuse testing. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status. #J-18808-Ljbffr