Mohammad Q.

OAuth 2.X expert. Have the proven experience to help building your system authorization & authentication flows. Why? Because I'm a member of the Platform IAM, Account Security, and Compliance engineering team at Upwork ($UPWK), a publicly traded marketplace where more than $3.8 billion of work is transacted annually. Design, develop, and maintain backend services across Upwork's authentication, identity, and access management (IAM), authorization, and account security domains — systems that handle a significant share of all platform backend traffic. Develop and optimize RESTful APIs and GraphQL endpoints with a focus on security, scalability, and performance under high traffic loads. Apply secure coding practices across all services to mitigate vulnerabilities and meet compliance requirements in a platform that processes billions in annual transaction volume. Collaborate with Product, Trust and Safety, and Security teams to align backend solutions with business objectives and evolving security standards.