This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for an Application Security Engineer based in the United States. This is an opportunity to take ownership of application security across a modern, cloud-native technology environment. You will lead vulnerability management from discovery and prioritization through remediation, reporting, and continuous improvement. The role combines hands-on security engineering with strategic influence across software development and infrastructure teams. You will strengthen operating system images, open-source dependencies, and the broader software supply chain against emerging threats. You will also embed security validation directly into CI/CD workflows through automation, testing, and modern security tooling. Working cross-functionally, you will establish secure-coding practices and help engineering teams adopt security as part of everyday development. This role is ideal for a pragmatic security professional who enjoys solving complex problems and balancing strong protection with usability and delivery speed.