Senior IT Systems & Security Administrator

EnduroSat; Denver (CO); On-site; USD 100,000 - 130,000; Full time

Benefits offered by this job

Health insurance

401k plan

Performance-based bonus

Travel budget and conferences

Job summary

EnduroSat is seeking a hands-on Senior IT Systems and Security Administrator to join the Denver, CO team. You will be the primary IT resource for the U.S. office, ensuring security, reliability, and compliance of local and cloud environments.

Daily tasks include end-user support, infrastructure management, cybersecurity controls, government cloud platforms, and compliance activities while collaborating with US teams.

Qualifications

• 5+ years in systems administration, infra engineering, IT operations, or cyber security.
• Bachelor-level degree in IT, CS, cybersecurity, or equivalent experience.
• Strong experience with Windows-based enterprise environments and MFA.
• Experience in government/regulated cloud environments (GCC High, GovCloud).
• Solid networking, identity, endpoint protection, and incident response knowledge.
• Familiarity with security frameworks, compliance, and documentation practices.

Responsibilities

• Provide user support and manage end-user devices, servers, and networks.
• Administer GCC High and Azure Government resources; manage IAM and security controls.
• Support AWS GovCloud environments and cloud resource management.
• Maintain security posture across on-prem and cloud, with patching and hardening.
• Investigate security incidents and maintain audit-ready documentation.
• Coordinate with global teams and vendors on security initiatives.

Skills

Windows Server

Microsoft 365

GCC High

Azure Government

AWS GovCloud

Identity management

Networking basics

Endpoint security

Security incident response

Encryption/key mgmt

Documentation

Communication skills

Education

Bachelor's degree in IT or related

Tools

Intune

Defender

Sentinel

Security Center

Entra ID / Azure AD

Job description

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-regulated cloud environments
• Experience managing Azure Government resources, networking, security, and identity services
• Experience supporting AWS GovCloud environments, including IAM, networking, logging, and security controls
• Strong knowledge of Microsoft Entra ID (Azure AD), Active Directory, Group Policy, DNS, DHCP, and identity lifecycle management
• Solid networking expertise including TCP/IP, VLANs, routing, VPNs, wireless networking, firewalls, and network troubleshooting
• Experience implementing and managing endpoint security technologies, including EDR, device management, encryption, patch management, and vulnerability remediation
• Understanding of security frameworks, compliance requirements, and best practices applicable to government or regulated environments
• Experience with system monitoring, logging, incident response, and security event investigation
• Experience with Microsoft Intune, Microsoft Defender, Sentinel, Security Center, or comparable security platforms
• Experience supporting CMMC, NIST 800-171, FedRAMP, ITAR, DFARS, or similar compliance frameworks
• Demonstrated ability to detect, investigate, contain, and remediate security incidents, including documentation, root-cause analysis, and coordination with internal stakeholders
• Strong troubleshooting, analytical, and documentation skills
• Excellent communication skills with a customer-service-oriented mindset

What do we offer?

• Health insurance coverage
• Matching 401k plan
• Generous team performance-based bonus
• Aggressive, uncapped commission structure
• Full autonomy over your territory-no micromanagement; direct line to leadership for fast decisions
• Travel budget, conference attendance, and the tools to win
• Collaboration with the EnduroSat offices with occasional international travel

Salary range 100.000- 130.000 $. The salary will likely be within this range although it may differ based on experience level or other factors.

Why EnduroSat?

• Fast-paced and delivery-focused culture

We work with well-defined quarterly based objectives, that allow us to fast-track the progression of our work and improve as we go

• Tough engineering challenges & hard-core R&D

You will be able to work on unique space technology and build next-gen innovations, while mentored by world-recognized space experts

• Constant learning and progression

Own your personal growth by navigating through our career progression framework and educational programs