Windows Security Engineer

Our client is seeking a Windows Security Engineer in Quincy, MA. This is a 6+month contract and onsite 2-3 days per week. As a Windows File Share Security Engineer, you will be a member of our highly technical production support team, who support security for the unstructured data environment. You will be responsible for the ongoing management of secure enterprise file sharing environments. This role ensures the confidentiality, integrity, and availability of shared data by managing permissions, enforcing access controls, monitoring usage, and protecting file systems against unauthorized access, data loss, and cyber threats.Maintain secure file sharing platforms including Windows file servers and NAS storage devices.Administer and manage share-level and NTFS permissions using role-based and least-privilege access models.Conduct regular access reviews and audits to ensure appropriate user and group permissions.Monitor file share activity for anomalies, unauthorized access, or potential data exfiltration using logging and security tools.Education & Preferred Qualifications:Associate's/Bachelor's degree in Information Technology, Cybersecurity, or related field (or equivalent experience).5+ years' experience administering Windows file servers or enterprise storage environments.Security or infrastructure certifications (Security+, CISSP, Microsoft, or similar) a plus.Additional requirements:- Experience with NTFS and share permissions.- Strong understanding of security principles including least privilege, RBAC, and auditing.