Sr Systems Administrator

Peraton•Boston, MA

5d•Hybrid

About The Position

Peraton has an opening for a Sr Systems Administrator with a comprehensive skill set in E-Mail systems, virtualization technologies and Windows Active Directory. The person who takes this role will spend their first 6 weeks (orientation) onsite, 5 days a week, in our Boston office at 1 Ashburton Place. Candidates will ONLY be considered if they live local to Boston. Candidates who live more than 2 hours from downtown Boston will not be considered. After the orientation period, the person in this role will be on a hybrid onsite schedule with a minimum of 3 days per week, at the same Boston location. The role could revert to full time onsite in Boston 5 days per week at any time. The System Administrator is responsible for management of all Windows / Active Directory environments. This includes both physical and virtual systems and the services running on them. We are looking for a System Administrator with a strong background in on premise E-Mail system support. They should have extensive experience supporting Microsoft Exchange E-Mail servers, Proofpoint E-Mail security appliances and be able to implement and manage newer DNS based E-Mail authentication protocols such as DKIM, SPF, DMARC and others in this rapidly evolving space. Monitor the health and analyze/maintain the performance of our on prem Microsoft Exchange environments. Keep Exchange patched and up to date with latest supported versions. Work with our backup administrators to maintain valid, tested and secure backups of the E-Mail system including participation in our monthly restore testing process. Manage E-Mail retention and archiving policies to keep E-Mail data according to legal requirements and maintain healthy Exchange mailboxes. Manage E-Mail security devices like Proofpoint along with DNS based E-Mail authentication requirements to help secure our communications. Assist in searches of E-Mail related to public record requests. Monitor the health and analyze/maintain the performance of our Microsoft Windows/Active Directory environment. Monitor the health and analyze/maintain the performance of our VMware virtualization environment. Make recommendations and implement changes to improve the overall performance and resiliency of MS Exchange. Manage hardware buildouts to expand and refresh available physical resources. Manage Active Directory core services: DHCP and DNS services. Group policy design and management OU structure and AD replication Test, upgrade, and migrate virtual environments as new versions of software and hardware become available. Participate in rotation for after-hours support. Monitor the health and analyze performance of the VMware environment. Keep ESXi and vCenter patched and updated to latest supported levels. Make recommendations and implement changes to improve the overall performance of the various VMware host clusters. Hardware build-out to expand and refresh available physical resources. Create a strategy that right sizes guest machines to ensure our production environment is free from contention. Architect an environment that optimizes ESXi host performance, reliability and availability. Test, upgrade, and migrate old host servers/clusters to new and align the resources with the requirements of the business. Work with our Cyber Security Team to harden our VMware environment guided by CISA recommendations. Create and document procedures regarding virtualization standards within the organization. Set up layers of protection against ransomware and other modern-day threats to data.

Requirements

Bachelor’s degree and 5 years of experience or an Associate’s degree and 7 years of experience or a High School diploma and 9 years of experience.
Must be a U.S. Citizen or Green card holder and can pass a background check.
Demonstrated hands on experience performing administration, troubleshooting, patching, and support of MS Exchange, VMware virtual infrastructures and Windows AD.
Experience and in-depth understanding of Active Directory, DNS and other Windows core services.
Experience managing private cloud environments as well as developing highly available virtualized environments including defining monitoring standards, operational procedures and growth plans.
Knowledge and experience with HPE ProLiant servers.
Proven experience designing and implementing an enterprise-wide virtual infrastructure using ESXi v8/v9.
Demonstrated experience working with vendors and end users on system troubleshooting.
Ability to automate processes through the effective application of scripts (PowerShell, Pearl, VBS).
Ability to handle multiple tasks while prioritizing and delivering results on time.
Excellent verbal and written communication skills.
Must have strong analytical skills.
Ability to think strategically with technical vision.
Attention to detail and strong organizational skills.

Nice To Haves

Microsoft/VMware certifications preferred.
ITIL certification preferred.

Responsibilities

Management of all Windows / Active Directory environments, including both physical and virtual systems and the services running on them.
Extensive experience supporting Microsoft Exchange E-Mail servers, Proofpoint E-Mail security appliances.
Implement and manage newer DNS based E-Mail authentication protocols such as DKIM, SPF, DMARC and others.
Monitor the health and analyze/maintain the performance of on prem Microsoft Exchange environments.
Keep Exchange patched and up to date with latest supported versions.
Work with backup administrators to maintain valid, tested and secure backups of the E-Mail system, including participation in monthly restore testing.
Manage E-Mail retention and archiving policies.
Manage E-Mail security devices like Proofpoint along with DNS based E-Mail authentication requirements.
Assist in searches of E-Mail related to public record requests.
Monitor the health and analyze/maintain the performance of Microsoft Windows/Active Directory environment.
Monitor the health and analyze/maintain the performance of VMware virtualization environment.
Make recommendations and implement changes to improve the overall performance and resiliency of MS Exchange.
Manage hardware buildouts to expand and refresh available physical resources.
Manage Active Directory core services: DHCP and DNS services.
Group policy design and management, OU structure and AD replication.
Test, upgrade, and migrate virtual environments as new versions of software and hardware become available.
Participate in rotation for after-hours support.
Monitor the health and analyze performance of the VMware environment.
Keep ESXi and vCenter patched and updated to latest supported levels.
Make recommendations and implement changes to improve the overall performance of the various VMware host clusters.
Hardware build-out to expand and refresh available physical resources.
Create a strategy that right sizes guest machines to ensure production environment is free from contention.
Architect an environment that optimizes ESXi host performance, reliability and availability.
Test, upgrade, and migrate old host servers/clusters to new and align resources with business requirements.
Work with Cyber Security Team to harden VMware environment guided by CISA recommendations.
Create and document procedures regarding virtualization standards within the organization.
Set up layers of protection against ransomware and other modern-day threats to data.