Senior IT Systems & Security Administrator

About us 

We are EnduroSat! A fast-growing space scale-up at the forefront of satellite innovation, specializing in advanced software-flexible satellites for commercial, governmental, and scientific endeavors. 

• This is more than a job, it's a mission 

We are making space universally accessible and redefining what's possible. 

• We get things done 

We take ownership of what we do and we work hard to make a difference. 

• We are fearless 

Transparency is our only way forward. We dare to address and resolve issues head-on. 

• We learn from our mistakes 

We deliver, take informed risks, and evolve to achieve our goals. 

What is the role?  

We are looking for a hands-on Senior IT Systems and Security Administrator to join our Denver, CO team. As the administrator, you will be the primary IT resource for our U.S. office, while ensuring the security, reliability, and compliance of our local and cloud-based technology environments. You will manage end-user support, infrastructure, cybersecurity, government cloud platforms, and compliance-related activities while working closely with US teams. 

Some of your daily tasks will include: 

• Provide first- and second-line technical support for employees, resolving hardware, software, network, and security-related issues
• Install, configure, maintain, and troubleshoot workstations, laptops, servers, printers, mobile devices, and office IT equipment
• Administer and support local infrastructure, including servers, storage, switches, routers, firewalls, VPNs, wireless networks, and internet connectivity
• Manage Microsoft GCC High services, including Exchange Online, SharePoint Online, Teams, OneDrive, Intune, Entra ID (Azure Active Directory), Conditional Access, and related security controls
• Administer Azure Government resources, including identity services, virtual machines, networking, storage, monitoring, security services, and access management
• Support AWS GovCloud environments, including account administration, IAM, networking, security controls, monitoring, and cloud resource management
• Manage user identity and access across on-premises and cloud environments, including provisioning, deprovisioning, privileged access management, MFA, and role-based access controls
• Monitor, maintain, and improve cybersecurity controls across endpoints, infrastructure, cloud platforms, and user accounts
• Investigate, respond to, and document security incidents, vulnerabilities, threats, and suspicious activity in coordination with internal stakeholders
• Perform vulnerability management activities, including security patching, remediation tracking, configuration reviews, and system hardening
• Administer endpoint management and security solutions, including device enrollment, compliance policies, endpoint detection and response (EDR), disk encryption, and software deployment
• Conduct regular system backups, restore testing, disaster recovery exercises, and business continuity readiness activities
• Monitor system, network, and cloud performance, proactively identifying and resolving operational issues
• Support compliance initiatives by maintaining security documentation, system inventories, audit evidence, access reviews, logs, and control records
•  Manage employee onboarding and offboarding processes, including account creation, permissions assignment, hardware deployment, and asset recovery
• Maintain accurate documentation for infrastructure, network diagrams, cloud environments, standard operating procedures, and security processes
• Coordinate with external vendors, managed service providers, cloud providers, and internal global teams to support infrastructure and security initiatives
• Evaluate and recommend improvements to infrastructure, security controls, cloud architecture, and operational processes
• Evaluate and make recommendations regarding modern encryption algorithms and protocols (e.g., AES, RSA, ECC, TLS/SSL) and their application to data-at-rest and data-in-transit, including disk encryption, key management, and certificate handling in line with FIPS 140-2/140-3 requirements.

What do we look for? 

• 5+ years of experience in systems administration, infrastructure engineering, IT operations, cybersecurity, or a similar role
• Bachelor's degree in Information Technology, Computer Science, Cybersecurity, or equivalent practical experience
• Strong experience supporting Windows-based enterprise environments, including Windows Server and Microsoft 365
• Experience administering Microsoft GCC High environments and understanding of government-regulat