Senior System Engineer

Job Title: Senior System Engineer

Employment Type: Full-Time Permanent

Location: Hybrid 3 days on-site in lower Manhattan, 2 days remote

Description: Senior Sr. Systems Engineer supporting a hybrid environment with heavy on-prem expertise and AWS exposure. Ensures the stability, integrity, and efficient operation of in-house and cloud-based information systems that support core organizational functions. This individual applies proven communication, analytical, and problem-solving skills to lead the design, deployment, and troubleshooting of complex Windows server environments.

Key Responsibilities & Duties:

• Infrastructure Management: Own and maintain Windows Server environments (2016, 2019, 2022+) with a focus on uptime, security, and performance optimization.
• Storage Administration: Support diverse on-prem storage solutions including Dell PowerScale and vSAN.
• Messaging Systems: Manage and optimize Exchange infrastructure to ensure reliability and performance.
• Cloud & Virtualization: Support hybrid environments across VMware vSphere, Hyper-V, Azure, and AWS.
• Directory Services: Administer Active Directory, Entra ID, GPOs, DNS, and DHCP. Ensure stability and proper access controls.
• Automation & Scripting: Build and maintain PowerShell automation to streamline operations and reduce manual effort.
• Project Delivery: Lead system upgrades, migrations, and new deployments. Partner with cross-functional teams to execute.
• Security & Compliance: Enforce security standards, monitor systems, and support audit and disaster recovery efforts.
• Escalation Support: Act as Tier 3 or 4 escalation for complex issues. Perform root cause analysis and drive long-term fixes.
• Documentation & Mentorship: Maintain technical documentation and SOPs. Support and mentor junior admins.
• Vendor & Stakeholder Collaboration: Work with vendors and internal teams to align solutions with business needs.

Required Skills:

• Domain: Financial Services or Legal Services / Corporate Law
• Previous on-prem to AWS migration experience
• 10+ years of professional experience in a Systems Administrator or Systems Engineer role within an enterprise environment.
• Expert knowledge of Windows Server operating systems and related Microsoft technologies (Exchange, SharePoint, SQL Server).
• Strong proficiency in virtualization technologies (VMware, Hyper-V)
• Comprehensive understanding of PowerShell scripting and automation best practices.
• Knowledge of network protocols, firewalls, and security principles.
• Certifications: Relevant certifications such as Microsoft Certified Solutions Expert (MCSE), Microsoft Certified: Azure Solutions Architect, or VMware Certified Professional (VCP) are highly valued.