Senior System Administrator

abra professional services is seeking a Senior System Administrator! We are looking for an experienced Senior System & Infrastructure Engineer to lead the design, implementation, and maintenance of scalable enterprise IT environments. You will take end-to-end ownership of Linux systems, Active Directory, NetApp storage, and cloud/virtualization infrastructure, while collaborating closely with R&D/DevOps teams and leveraging AI tools to drive automation and optimization. Key Responsibilities Hands-on design, deployment, and maintenance of Linux (Ubuntu / RedHat / CentOS) and Windows Server systems. Management of virtualization environments (VMware/KVM) and cloud platforms (AWS / Azure). Full responsibility for the architecture, configuration, management, and ongoing maintenance of NetApp storage systems (ONTAP / FAS / AFF), including Volumes, Snapshots, Qtrees, and performance optimization. Management of Active Directory, identity management, backups, DRP, and data replication. Writing automation scripts (PowerShell, Bash, Python, Ansible). Close collaboration with development teams (R&D / DevOps). Integration of AI technologies into infrastructure operations. Mandatory Experience: At least 5 years of experience as a Lead System/Infrastructure Engineer in medium to large enterprises. Proven and deep experience ( 3+ years ) in managing, configuring, and maintaining NetApp ONTAP systems. Deep experience ( 3+ years ) in managing and maintaining Linux environments (Ubuntu / RedHat / CentOS). Hands-on experience with VMware/KVM, cloud environments (AWS / Azure), and scripting (PowerShell / Bash / Python / Ansible). Proven, deep experience in managing Active Directory, Entra ID (Azure AD), GPO planning, and complex permissions management. Proven experience working closely with R&D / DevOps teams. Advantages: Practical experience using AI tools (Generative AI / AIOps) for automation, data analysis, scripting/coding, and troubleshooting.