Senior Systems Administrator
Job Description
Job description 5 Flatirons Solutions is seeking a highly skilled Senior Systems Administrator with advanced expertise supporting Defense workloads and operating within highly compliant, security-driven environments.
This is a critical role within our organization, responsible for taking primary ownership of infrastructure in a CMMC Level 2 certified environment designed to securely host Controlled Unclassified Information (CUI).
If you thrive in secure, compliance-focused environments and bring deep experience in defense, CMMC, FedRAMP, or similar regulatory frameworks, we want to hear from you.Key Responsibilities In this role, you will play a vital part in managing and maintaining our customer-facing IT infrastructure.
You will oversee the design, implementation, optimization, and security of systems to ensure reliability, performance, and compliance.
This role requires a proactive, security-first mindset and the initiative to drive continuous improvement across infrastructure, processes, and compliance controls.
Assist with design of long-term strategic vision for the IT environments.
Participate in product evaluations given by vendors for potential implementation.
Participate and provide expert guidance/response for all audits such as ISO27001, ISO9001, ISO 27701, CMMC, NIST etc.
Advise management on hosting budget for all infrastructure-related expenditures.
Design, deploy, and maintain the company's Hosting IT infrastructure, including servers, networks, storage, and virtualization environments.
Manage and monitor system performance, capacity, and availability to ensure optimal performance and uptime.
Implement and enforce security best practices to protect company and/or customer data and systems from potential threats and vulnerabilities.
Troubleshoot and resolve technical issues related to servers, networks, and applications in a timely manner.
Collaborate with other IT teams and departments to support business initiatives and projects.
Plan and execute system upgrades, patches, and migrations with minimal disruption to operations.
Design backup strategies for all systems.
Develop and maintain documentation, standard operating procedures, and policies related to system administration.
Mentor and provide oversight to other system administrators, sharing knowledge and best practices.
Serve as a point of escalation for other systems administrators.
Perform planning, configuration, deployment, and maintenance-work associated with the Flatirons Solutions production and development Hosting environments.
Perform systems administration tasks associated with implementation, migration and deployments utilizing remote hands.
Quickly and efficiently troubleshoot simple and complex issues to provide outstanding support for customer and internal needs.
Identify areas for process and efficiency improvement within systems operations; recommend solutions and assist in overseeing implementation.
Actively facilitate continuous improvement with a focus towards efficiency, value, and improved stability, security and privacy Ensure all necessary operational processes and procedures are carried out with a high level of attention to detail, expediency and on-time delivery.
Create and maintain system information diagrams and detailed documentation.
Monitor various systems capacity and provide analytics & forecasts for added or reduced capacity as required.
Use strong communication skills (both written and verbal) to direct with precision and clarity remote-hands technicians over the phone to execute deployment, break-fix, and upgrade plans accurately.
Understands and adheres to all requirements of the Integrated Management Systems (IMS), which includes Quality, Information Security, and Privacy.
Other duties as may be assigned.
Skills, Knowledge & Expertise Proficiency in virtualization technologies such as VMware or Hyper-V.
Strong understanding of networking principles and protocols (TCP/IP, DNS, DHCP, VLANs, etc.) Experience with cloud platforms such as AWS and Azure Familiarity with configuration management tools (e.g., Puppet, Chef, Ansible) Excellent problem-solving skills and the ability to troubleshoot complex technical issues.
Solid communication and interpersonal skills, with the ability to work effectively in a team environment.
Industry certifications such as MCSE, RHCE, CCNA, or AWS Certified SysOps Administrator preferred.
Experience with containerization technologies (Docker, Kubernetes) is a plus.
Knowledge of scripting languages (PowerShell, Bash, Python) for automation is a plus.
Experience with cybersecurity practices and tools preferred.
Preferred location is the Denver/Boulder area.
This is a critical role within our organization, responsible for taking primary ownership of infrastructure in a CMMC Level 2 certified environment designed to securely host Controlled Unclassified Information (CUI).
If you thrive in secure, compliance-focused environments and bring deep experience in defense, CMMC, FedRAMP, or similar regulatory frameworks, we want to hear from you.Key Responsibilities In this role, you will play a vital part in managing and maintaining our customer-facing IT infrastructure.
You will oversee the design, implementation, optimization, and security of systems to ensure reliability, performance, and compliance.
This role requires a proactive, security-first mindset and the initiative to drive continuous improvement across infrastructure, processes, and compliance controls.
Assist with design of long-term strategic vision for the IT environments.
Participate in product evaluations given by vendors for potential implementation.
Participate and provide expert guidance/response for all audits such as ISO27001, ISO9001, ISO 27701, CMMC, NIST etc.
Advise management on hosting budget for all infrastructure-related expenditures.
Design, deploy, and maintain the company's Hosting IT infrastructure, including servers, networks, storage, and virtualization environments.
Manage and monitor system performance, capacity, and availability to ensure optimal performance and uptime.
Implement and enforce security best practices to protect company and/or customer data and systems from potential threats and vulnerabilities.
Troubleshoot and resolve technical issues related to servers, networks, and applications in a timely manner.
Collaborate with other IT teams and departments to support business initiatives and projects.
Plan and execute system upgrades, patches, and migrations with minimal disruption to operations.
Design backup strategies for all systems.
Develop and maintain documentation, standard operating procedures, and policies related to system administration.
Mentor and provide oversight to other system administrators, sharing knowledge and best practices.
Serve as a point of escalation for other systems administrators.
Perform planning, configuration, deployment, and maintenance-work associated with the Flatirons Solutions production and development Hosting environments.
Perform systems administration tasks associated with implementation, migration and deployments utilizing remote hands.
Quickly and efficiently troubleshoot simple and complex issues to provide outstanding support for customer and internal needs.
Identify areas for process and efficiency improvement within systems operations; recommend solutions and assist in overseeing implementation.
Actively facilitate continuous improvement with a focus towards efficiency, value, and improved stability, security and privacy Ensure all necessary operational processes and procedures are carried out with a high level of attention to detail, expediency and on-time delivery.
Create and maintain system information diagrams and detailed documentation.
Monitor various systems capacity and provide analytics & forecasts for added or reduced capacity as required.
Use strong communication skills (both written and verbal) to direct with precision and clarity remote-hands technicians over the phone to execute deployment, break-fix, and upgrade plans accurately.
Understands and adheres to all requirements of the Integrated Management Systems (IMS), which includes Quality, Information Security, and Privacy.
Other duties as may be assigned.
Skills, Knowledge & Expertise Proficiency in virtualization technologies such as VMware or Hyper-V.
Strong understanding of networking principles and protocols (TCP/IP, DNS, DHCP, VLANs, etc.) Experience with cloud platforms such as AWS and Azure Familiarity with configuration management tools (e.g., Puppet, Chef, Ansible) Excellent problem-solving skills and the ability to troubleshoot complex technical issues.
Solid communication and interpersonal skills, with the ability to work effectively in a team environment.
Industry certifications such as MCSE, RHCE, CCNA, or AWS Certified SysOps Administrator preferred.
Experience with containerization technologies (Docker, Kubernetes) is a plus.
Knowledge of scripting languages (PowerShell, Bash, Python) for automation is a plus.
Experience with cybersecurity practices and tools preferred.
Preferred location is the Denver/Boulder area.
