Greene Tweed
Overview
Senior Systems Administrator role at Greene Tweed. Join to apply for the Senior Systems Administrator role at Greene Tweed. If you enjoy continuous learning and are excited about working with and creating technological solutions, explore career opportunities with Greene, Tweed. At Greene Tweed, you'll find cutting-edge technology, world-class polymer expertise and advancement opportunities in a diverse environment that emphasizes impact and success. Essential Duties / Responsibilities
Support the development and administration by acting as an SME for Entra ID to support account creation and maintenance, Conditional Access policies, SAML Enterprise Apps for SSO integration, and the rest of the M365 stack (Microsoft Teams, OneDrive, SharePoint, Exchange Online, Intune/Endpoint Manager, etc.) Globally administer Active Directory, Group Policy, DNS, DHCP, DFS, Print and File Servers, and other core services and supporting infrastructure. Administer and maintain Windows and Linux servers in a mixed hybrid (AWS, Azure) enterprise environment consisting of multiple technologies and roles of VMware, Hyper-V, DNS, DHCP, SQL, Terminal Server, FTP, etc. Administration and security management of Office 365 hybrid messaging technologies. Work with outside vendors to perform maintenance of server and datacenter technologies in remote offices. Automate recurring tasks using PowerShell and other scripting languages. Monitor systems performance, availability, and logs using enterprise monitoring tools. Collaborate with Greene Tweed cybersecurity, networking, and application teams to maintain secure and efficient operations for the business. Provide Tier 3 support for escalated technical issues and incidents. Minimum Qualifications
Education / Certifications: Bachelor’s Degree preferred, or equivalent work experience; Microsoft Certifications a plus Skills and Experience
5+ years of related experience installing, maintaining, upgrading and migrating Windows and Linux server environments, preferably global. Proficiency in: Windows Server (2016/2019/2022/2025) Active Directory & Entra ID (Azure AD) PowerShell scripting and automation Microsoft 365 administration (Exchange, Teams, SharePoint, etc.) Virtualization (VMware vSphere and Microsoft Hyper-V) Experience with security best practices for identity, endpoint, and infrastructure hardening. Familiarity with Intune or other MDM solutions. Strong problem-solving and troubleshooting skills. Experience scripting languages for automation Job Environment
Physical Requirements
Standing Occasionally (16-45%) Sitting Frequently (46-100%) Lifting Up to 15lbs without assistance Carrying Up to 15lbs without assistance Walking Occasionally (16-45%) Hearing Ability to detect noises with or without corrective device(s) Vision Clarity of vision, with or without corrective lenses Mental Requirements
Problem Solving Occasionally (16-45%) Making Decisions Ability to make decisions that have a moderate impact Supervise Rarely (0-15%) Interpret Data Frequently (46-100%) Organize Occasionally (16-45%) Read/Write Frequently (46-100%) Communication Frequently (46-100%) Work Environment
High Temperatures Rarely (0-15%) Low Temperatures Rarely (0-15%) Noises Moderate (business office with computers, printers and light office noises) Fumes Exposure Rarely (0-15%) Required Minimum Qualifications
This position requires U.S. Person status as defined by ITAR for access to data controlled under ITAR. A U.S. Person includes U.S. Citizens, U.S. Nationals, lawful permanent residents, and workers granted refugee or asylum status in the United States. Note: This Job Description does not state or imply that these are the only duties performed by the employee. All requirements are subject to change. Equal Opportunity Employer: Greene, Tweed is an Equal Opportunity Employer, and employment decisions are made without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other federally protected class. Drug Free Workplace: Employment is contingent upon successful completion of a pre-employment drug screening and background investigation in accordance with applicable laws. Greene, Tweed is not seeking unsolicited resumes from search firms without a written agreement. Referrals may increase interview chances.
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Senior Systems Administrator role at Greene Tweed. Join to apply for the Senior Systems Administrator role at Greene Tweed. If you enjoy continuous learning and are excited about working with and creating technological solutions, explore career opportunities with Greene, Tweed. At Greene Tweed, you'll find cutting-edge technology, world-class polymer expertise and advancement opportunities in a diverse environment that emphasizes impact and success. Essential Duties / Responsibilities
Support the development and administration by acting as an SME for Entra ID to support account creation and maintenance, Conditional Access policies, SAML Enterprise Apps for SSO integration, and the rest of the M365 stack (Microsoft Teams, OneDrive, SharePoint, Exchange Online, Intune/Endpoint Manager, etc.) Globally administer Active Directory, Group Policy, DNS, DHCP, DFS, Print and File Servers, and other core services and supporting infrastructure. Administer and maintain Windows and Linux servers in a mixed hybrid (AWS, Azure) enterprise environment consisting of multiple technologies and roles of VMware, Hyper-V, DNS, DHCP, SQL, Terminal Server, FTP, etc. Administration and security management of Office 365 hybrid messaging technologies. Work with outside vendors to perform maintenance of server and datacenter technologies in remote offices. Automate recurring tasks using PowerShell and other scripting languages. Monitor systems performance, availability, and logs using enterprise monitoring tools. Collaborate with Greene Tweed cybersecurity, networking, and application teams to maintain secure and efficient operations for the business. Provide Tier 3 support for escalated technical issues and incidents. Minimum Qualifications
Education / Certifications: Bachelor’s Degree preferred, or equivalent work experience; Microsoft Certifications a plus Skills and Experience
5+ years of related experience installing, maintaining, upgrading and migrating Windows and Linux server environments, preferably global. Proficiency in: Windows Server (2016/2019/2022/2025) Active Directory & Entra ID (Azure AD) PowerShell scripting and automation Microsoft 365 administration (Exchange, Teams, SharePoint, etc.) Virtualization (VMware vSphere and Microsoft Hyper-V) Experience with security best practices for identity, endpoint, and infrastructure hardening. Familiarity with Intune or other MDM solutions. Strong problem-solving and troubleshooting skills. Experience scripting languages for automation Job Environment
Physical Requirements
Standing Occasionally (16-45%) Sitting Frequently (46-100%) Lifting Up to 15lbs without assistance Carrying Up to 15lbs without assistance Walking Occasionally (16-45%) Hearing Ability to detect noises with or without corrective device(s) Vision Clarity of vision, with or without corrective lenses Mental Requirements
Problem Solving Occasionally (16-45%) Making Decisions Ability to make decisions that have a moderate impact Supervise Rarely (0-15%) Interpret Data Frequently (46-100%) Organize Occasionally (16-45%) Read/Write Frequently (46-100%) Communication Frequently (46-100%) Work Environment
High Temperatures Rarely (0-15%) Low Temperatures Rarely (0-15%) Noises Moderate (business office with computers, printers and light office noises) Fumes Exposure Rarely (0-15%) Required Minimum Qualifications
This position requires U.S. Person status as defined by ITAR for access to data controlled under ITAR. A U.S. Person includes U.S. Citizens, U.S. Nationals, lawful permanent residents, and workers granted refugee or asylum status in the United States. Note: This Job Description does not state or imply that these are the only duties performed by the employee. All requirements are subject to change. Equal Opportunity Employer: Greene, Tweed is an Equal Opportunity Employer, and employment decisions are made without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other federally protected class. Drug Free Workplace: Employment is contingent upon successful completion of a pre-employment drug screening and background investigation in accordance with applicable laws. Greene, Tweed is not seeking unsolicited resumes from search firms without a written agreement. Referrals may increase interview chances.
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