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Senior Systems Administrator
Boston, Massachusetts  |  Hybrid
Direct Hire Position
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Applied on March 22, 2023
Job Id #61488 Posted February 8, 2023

This Boston based Senior System Administrator role provides an exciting opportunity to be part of an IT infrastructure team responsible for supporting a wide range of technologies including core business systems such as Microsoft Dynamics 365 and SharePoint Online and systems administration tasks around disaster recovery and business continuity for the on-premises and cloud technology infrastructure. Responsibilities cover areas such as active directory, back-ups, recovery, file permissions and maintenance, system OS and software upgrades, software configuration, software licensing, and support maintenance agreements.

  • Maintain, monitor, and troubleshoot the availability, integrity, and performance of core business systems and applications and supporting infrastructure IT infrastructure: physical and virtual, on-premises, hosted, and in the cloud
  • Maintain, monitor, and troubleshoot system backups, preventing data loss for critical business systems and data
  • Create, test, and manage documentation, policies, procedures, and training plans for disaster recovery, high availability, and business continuity systems
  • Build new Windows servers and virtual servers on premise and in PaaS
  • Maintain server rooms and assist with network and server equipment upgrades and installations as well as environmental monitoring and office security systems
  • Identify, research, and resolve technical problems, working with infrastructure support resources and vendors—escalating infrastructure issues as needed
  • Perform updates, security patches, hardware and software firmware and packages, and security vulnerability mitigation tasks
  • Support IS Team business systems support requests and business system upgrades, including QA and testing of new system functionality
  • Manage and update licenses, support contracts, and hardware warranty expirations
  • Conduct research on emerging products, services, protocols, and standards in support of business priorities
  • Liaise with external IT infrastructure providers, vendors, and contractors
  • Provide coaching to develop IT Infrastructure staff
  • Provide escalated end-user support for general technical issues
  • Provide shared after-hours escalation coverage for occasional, unexpected issues with critical production systems
  • Other duties as assigned
Qualifications and Skills:
  • Bachelor's degree in a related field or equivalent experience
  • 5+ years of related IT experience and various systems administration, including Microsoft on-premises and Azure technologies
  • Experience supporting physical servers and Hyper-V based virtual environments
  • Experience supporting firewalls, DNS, SANs, and IP based networks
  • Experience supporting infrastructure needs of business applications including Dynamics 365 and SharePoint
  • Ability to work independently and remain flexible in a changing environment
  • Ability to prioritize and manage multiple projects with strong attention to detail
  • Self-directed, proactive, and collaborative team player
  • Positive, at-cause, solutions-orientation
  • Strong customer-service orientation, with several years of front-line user support a plus
  • Strong communication and documentation skills
  • Enthusiasm organizational values and commitment to racial equity, diversity, and inclusion
  • Ability to lift 30 lbs. and work in server rooms
  • Available during off-hours for infrastructure related support
  • Home internet with adequate reliability and bandwidth if work-at-home options are desired

Horizontal is proud to be an Equal Opportunity and Affirmative Action Employer. We seek to provide employment opportunities to talented, qualified candidates regardless of race, color, sex/gender including gender identity and/or expression, national origin, religion, sexual orientation, disability, marital status, citizen status, veteran status, or any other protected classification under federal, state or local law.

In addition, Horizontal will provide reasonable accommodations for qualified individuals with disabilities. If you need to request a reasonable accommodation in order to complete the application or interview process, please contact

All applicants applying must be legally authorized to work in the country of employment.


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Horizontal is proud to be an Equal Employment Opportunity/Affirmative Action Employer providing a drug-free workplace.


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