Senior IT Administrator

CesiumAstro; Melbourne (FL); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Stock options

Comprehensive benefits (health, dental

Job summary

CesiumAstro is seeking a Senior IT Administrator to own enterprise IT initiatives, including system migrations, integrations, and companywide upgrades. You will manage Active Directory, Azure AD/Entra ID, MDM via Intune, and cloud environments, while guiding junior staff and documenting workflows.

Applicants should have 5–8 years in IT support or systems administration, a relevant IT degree, and strong security practices such as MFA and endpoint compliance.

Qualifications

• 5–8 years of IT support or systems administration experience required (3–6 years with a relevant MS).
• Bachelor’s degree in Information Technology, Computer Science, or related field preferred; equivalent experience considered.
• Strong understanding and broad application of IT support and systems administration principles.

Responsibilities

• Lead and execute system migrations, tests, cutover, and post-migration support.
• Drive system integrations across enterprise platforms to reduce manual workflows.
• Coordinate and implement companywide software/hardware upgrades with minimal disruption.
• Mentor junior helpdesk staff and provide guidance on escalated issues.
• Develop and maintain technical documentation including SOPs and troubleshooting guides.

Skills

Microsoft 365

Active Directory/Entra ID

AWS

MFA & endpoint security

IT troubleshooting

Documentation/SOPs

Customer service

Networking

VPN/Remote access

Cloud environments

Education

B.S. in Information Technology/Computer Science

M.S. in IT-related field (optional)

Tools

Intune

Azure AD/Entra ID

Purview

M365 Admin Center

VPN tools

Job description

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

We are looking to add a Senior Information Technology (IT) Administrator to our team. This role is a project-focused role responsible for planning and executing enterprise IT initiatives at CesiumAstro. In this position, you will own the delivery of system migrations, integrations, companywide upgrades, and new application rollouts that support a growing aerospace and defense organization. The Senior IT Administrator operates with general supervision and exercises independent judgment in diagnosing, prioritizing, and resolving a wide range of technical issues affecting end users and enterprise systems.

Job Duties And Responsibilities

• Lead and execute system migration projects including planning, testing, cutover, and post-migration support.
• Drive system integrations across enterprise platforms to improve interoperability and reduce manual workflows.
• Coordinate and implement companywide software and hardware upgrades with minimal disruption to operations.
• Manage Active Directory cleanup efforts including account audits, group policy reviews, and directory hygiene.
• Plan and execute new application rollouts including stakeholder coordination, testing, and end user enablement.
• Administer and maintain user accounts, groups, and permissions in Active Directory and/or Azure AD/Entra ID.
• Manage endpoint configuration, imaging, patching, and software deployment via MDM platforms (e.g., Intune).
• Monitor system health and assist in administration of servers, cloud environments, network infrastructure, M365 advanced skills, including Purview, Security, and Entra ID.
• Support IT security practices including access reviews, MFA enforcement, and endpoint compliance.
• Mentor junior helpdesk staff and provide guidance on escalated technical issues.
• Develop and maintain technical documentation including SOPs, knowledge base articles, and troubleshooting guides.
• Identify recurring issues, contribute to root-cause analysis, and implement process improvements.
• Participate in IT projects including system migrations, office expansions, and tool evaluations.

Job Requirements And Minimum Qualifications

• 5–8 years of IT support or systems administration experience required (3–6 years with a relevant M.S.).
• B.S. in Information Technology, Computer Science, or related field preferred; equivalent experience considered.
• Complete understanding and wide application of IT support and systems administration principles.
• Advanced troubleshooting skills across hardware, software, networking, and cloud-connected environments.
• Working knowledge of IT security practices including endpoint compliance, access management, and MFA.
• Ability to develop technical documentation and SOPs to support knowledge sharing and process consistency.
• Proficiency in Microsoft 365 (Outlook, Teams, SharePoint, OneDrive).
• Experience with AWS cloud configuration and support.
• Expertise in Active Directory Azure AD/Entra ID, and VPN and remote access tools.
• Knowledge of IT ticketing systems.
• Strong oral and written communication skills.
• Solid troubleshooting and problem-solving skills.
• Strong customer service orientation.

Preferred Experience

• Experience in a manufacturing, aerospace, or defense environment.
• CompTIA A+, Network+, Security+, Microsoft 365 Certified, or ITIL Foundation.
• Familiarity with ITAR/export compliance requirements in an IT context.

Full-time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans.

CesiumAstro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.