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Senior Engineer (OAuth2)

Company

CoStar Group

Location

Australia, New South Wales

Posted

May 29, 2026

Position Overview

Responsibilities
Bachelor’s Degree in a relevant technical specialisation
Strong experience in C# / .NET 8+ and ASP.NET Core for distributed backend services 
Strong understanding of OAuth2, OpenID Connect, and token lifecycle management (PKCE, federation, refresh tokens, assertion grants)
Experience designing software solutions for scale 
Experience with high traffic customer-facing services
Experience working with Tech leads to optimise engineering practices and processes 
Experience working with one of the common Cloud Platforms such as AWS, Azure, and/or GCP 
Experience with microservices and event-driven architectures 
Experience with SQL data stores (PostgreSQL, MySQL/Aurora) and NoSQL (DynamoDB, Redis)
DevOps practices, CI/CD, and infrastructure-as-code
Understanding of shift-left testing and how to implement it in practice 
Experience working in Agile environments 
Experie...
        

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Senior Engineer (OAuth2)

Position Overview

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