Description Join a team where innovation meets mission. Our AI, cloud, cyber, and modernization solutions save agencies thousands of hours, safeguard national security, and strengthen health and humanitarian missions worldwide. With 1,700+ team members, 1,500+ AI/data experts, and 100+ prime contracts, we deliver at scale and with purpose. We've been recognized as a Top Workplace by the Washington Post for six straight years and named to the Inc. 5000 Fastest Growing Private Companies 13 of the past 14 years. Credence is a welcoming home for those looking to grow and contribute to positive change. We encourage all employees to expand beyond their boundaries, dive into important world-changing Federal challenges. Credence has an immediate openiing for a highly skilled Senior Cloud Systems Administrator to support the Enterprise Sourcing, Medical and Contingency (ESMC) Portfolio Hosting Support Contract. The successful candidate will be responsible for the administration, maintenance, security, automation, and optimization of enterprise hosting environments supporting mission-critical applications and services. This role requires a professional who is equally comfortable managing Windows-based infrastructure, supporting Linux systems, and implementing modern DevOps practices to improve system reliability, scalability, and operational efficiency. The position is a hybrid role, requiring on-site support at Credence Headquarters in McLean, Virginia, three days per week. Responsibilities include but are not limited to … Administer, maintain, and troubleshoot Windows Server environments, including Active Directory, Group Policy, DNS, DHCP, IIS, and related services Support and manage Linux servers (Red Hat, Rocky Linux, Ubuntu, or similar distributions) in enterprise environments Monitor system performance, availability, and capacity to ensure optimal operation of hosted applications and services Implement, maintain, and improve infrastructure automation using scripting and configuration management tools Support DevOps initiatives, including CI/CD pipelines, infrastructure-as-code, automated deployments, and system monitoring Collaborate with developers, cybersecurity personnel, network engineers, and program stakeholders to support hosting requirements Perform routine system patching, upgrades, vulnerability remediation, and security hardening activities Manage virtualized environments utilizing VMware, Hyper-V, or cloud-based platforms Develop and maintain technical documentation, standard operating procedures, and system diagrams Support backup, recovery, continuity of operations, and disaster recovery activities Participate in incident response, root cause analysis, and corrective action implementation Ensure compliance with organizational security policies, government regulations, and applicable standards