Senior Windows Systems Engineer, Admin

Bit by Bit Computer Consulting

Senior Windows Systems Engineer administering Microsoft infrastructure for Bit By Bit, a managed IT services firm. Supporting Windows Server, Active Directory, Microsoft 365, Azure, Exchange, and virtualization environments.

Posted 8/11/2026full-timeCentral NJ • New Jersey • 🇺🇸 United StatesSenior💰 $75 - $85 per hourWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates extensive expertise in administering and supporting Windows Server environments, including advanced skills in Active Directory, Microsoft 365, and Azure administration. Proven ability to manage complex technical issues, provide senior-level support, and coordinate technical activities within a team.

Highest-signal resume keywords

Windows Server AdministrationActive Directory ManagementMicrosoft 365 AdministrationMicrosoft Azure AdministrationVirtualization with Hyper-V

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Windows Server Lifecycle ManagementGroup Policy AdministrationDNS ConfigurationDHCP ManagementPrint Server AdministrationIIS ConfigurationSFTP AdministrationTroubleshooting and Problem SolvingPerformance TuningTechnical Documentation

Soft Skills

Strong Communication SkillsAnalytical SkillsAttention to DetailTeam LeadershipOwnership of Technical Problems

Tools & Technologies

ServiceNowMicrosoft Entra IDExchange OnlineVMwareMicrosoft Hyper-V

Certifications & Qualifications

Infrastructure CertificationsRelevant Technical Certifications

Industry Keywords

Hybrid Microsoft EnvironmentTechnical DirectionChange ManagementOperational StandardsIncident Management

Tech Stack

Tools & technologies

AzureDNSServiceNowVMware

About the role

Key responsibilities & impact

Administer, maintain, and support Windows Server environments across versions 2012 R2 through 2025.
Manage the full Windows Server lifecycle, including installation, configuration, upgrades, patching, performance tuning, troubleshooting, and decommissioning.
Monitor server health, performance, capacity, and availability and proactively address infrastructure issues.
Plan and execute server upgrades, migrations, maintenance, and infrastructure changes.
Administer enterprise Active Directory and Microsoft Entra ID/Azure Active Directory.
Manage users, groups, permissions, organizational units, authentication, Group Policy, DNS, DHCP, file systems, and print servers.
Administer Microsoft 365, Microsoft Exchange, and Exchange Online.
Support Microsoft 365 and Exchange users, licensing, permissions, mailboxes, groups, migrations, upgrades, and service-impacting incidents.
Administer Microsoft Azure environments and support identity, access, security, configuration, and on-premises integration.
Administer Microsoft Hyper-V and support VMware environments, including potential VMware-to-Hyper-V migrations.
Configure, administer, and troubleshoot Microsoft IIS and SFTP environments.
Participate in infrastructure upgrades, migrations, deployments, and technical projects.
Apply security, patching, and system-management standards.
Provide senior-level technical support, guidance, and mentoring.
Coordinate technical activities across a small team when required.
Prioritize incidents, service requests, maintenance activities, and project requirements.
Maintain technical documentation, configurations, procedures, and change records.
Use ServiceNow or other service-management platforms to manage incidents, requests, changes, and technical work.

Requirements

What you’ll need

Minimum 10 years of hands-on experience supporting Windows Server environments.
Advanced experience administering Windows Server across physical and virtual infrastructure.
Strong experience with Active Directory and Microsoft Entra ID/Azure Active Directory.
Advanced Microsoft 365 and Exchange/Exchange Online administration experience.
Strong Microsoft Azure administration experience.
Hands-on experience with Group Policy (GPO), DNS, DHCP, Print Servers, and Windows File Systems.
Experience configuring and administering IIS.
Experience with SFTP setup and administration.
Strong virtualization experience, particularly Microsoft Hyper-V.
Experience administering VMware environments.
Strong troubleshooting, analytical, and problem-solving capabilities.
Ability to manage complex technical issues through resolution.
Experience providing technical direction or coordinating engineers and administrators.
Ability to work independently and take ownership of complex technical problems.
Strong written and verbal communication skills.
Ability to communicate technical issues clearly to technical and non-technical stakeholders.
Strong attention to documentation, security, operational standards, and change management.
Bachelor’s degree in Computer Science, Engineering, Information Technology, or related technical field, or equivalent relevant professional experience.
Occasional after-hours responsibilities may be required.
Master’s degree is preferred, not required.
ServiceNow, VMware-to-Hyper-V migration, hybrid Microsoft environment, team leadership, and relevant infrastructure certifications are preferred or assets.

Benefits

Comp & perks

Medical
Dental
Paid vacation
Retirement plan
Hybrid work arrangement
Monday to Friday schedule