This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Security & Infrastructure Engineer based in the United States. As a Senior Security & Infrastructure Engineer, you will own the security, infrastructure, and compliance posture of a cloud environment supporting critical public-sector and regulated-industry applications. You’ll play a central role in advancing a FedRAMP authorization while strengthening production infrastructure, security controls, and operational resilience. The role combines hands-on engineering with compliance leadership, giving you ownership from technical implementation through evidence and authorization. You’ll work closely with engineering and compliance stakeholders to embed security into infrastructure and developer workflows rather than treating it as a final review step. As one of the first dedicated security engineering hires, you’ll have substantial influence over security architecture, automation, and engineering standards. You’ll join a small, interdisciplinary team tackling complex problems with meaningful real-world impact. This is an opportunity to build scalable security foundations for technology used by organizations working to protect communities and critical infrastructure.