IT Network Administrator

GreenWaste Recovery LLC•San Jose, CA

15h•$145,000 - $155,000•Onsite

About The Position

GreenWaste is seeking an experienced, service-oriented IT Network Administrator to implement, administer, monitor, secure, and support enterprise network infrastructure across the company’s locations. This hands-on, in-office role is based at the San Jose office and reports to the Director of Infrastructure & Cyber Security. Limited job-related travel to company locations may be required. The role supports LAN, WAN, wireless, internet, VPN, firewall, SD-WAN, voice, and related network services in on-premises and cloud-connected environments. It maintains reliable and secure connectivity, resolves incidents and service requests, performs preventive maintenance and lifecycle upgrades, supports infrastructure and cybersecurity initiatives, and maintains accurate configurations, inventories, diagrams, procedures, and recovery documentation. The position works with internal IT teams, business stakeholders, telecommunications carriers, managed service providers, and security partners, and participates in after-hours support for critical events. The posting also describes broad infrastructure and cybersecurity leadership duties, including leading security operations, risk-based cybersecurity programs, incident response, vulnerability management, identity and access management, and business continuity and disaster recovery. The role provides escalation support and participates in an on-call rotation for critical infrastructure, cybersecurity, and business continuity events.

Requirements

Bachelor’s degree in Information Technology, Cybersecurity, Computer Science, or a related field, or an equivalent combination of education and relevant experience.
At least 7 years of progressively responsible experience in enterprise infrastructure, cloud services, networking, and cybersecurity.
Strong customer-service orientation and ability to communicate complex infrastructure and cybersecurity matters clearly to technical teams, business leaders, executives, and external partners.
Demonstrated ability to lead, develop, coach, and hold accountable infrastructure and cybersecurity professionals in a service-oriented, high-availability environment.
Experience developing infrastructure and cybersecurity strategies, roadmaps, budgets, staffing plans, service levels, performance metrics, and key risk indicators.
Strong vendor and contract management skills, including oversight of managed service providers, cloud and telecommunications providers, and SOC/MDR partners.
Knowledge of risk-based cybersecurity programs and frameworks and standards such as NIST Cybersecurity Framework and ISO/IEC 27001.
Experience with security operations, managed detection and response, security monitoring, threat intelligence, endpoint detection and response, alert escalation, threat hunting, containment, and remediation.
Strong knowledge of network security architecture and operations, including LAN, WAN, wireless, SD-WAN, firewalls, segmentation, internet connectivity, secure remote access, and voice services.
Experience building, operating, securing, modernizing, and troubleshooting complex hybrid technology environments, including Microsoft Azure, Microsoft 365, Windows Server, SQL Server, Active Directory, Microsoft Entra ID, Exchange, and SharePoint.
Knowledge of identity and access management, including multifactor authentication, privileged access, least-privilege principles, access reviews, and secure provisioning and deprovisioning.
Experience establishing and overseeing vulnerability, patch, configuration, and exposure management programs, including risk-based prioritization and verification of remediation.
Knowledge of cybersecurity incident response, including preparation, detection, triage, containment, eradication, recovery, evidence preservation, communications, and post-incident review.
Experience with business continuity and disaster recovery planning, including business impact analysis, backup integrity, recovery time and recovery point objectives, recovery runbooks, and testing exercises.
Knowledge of cybersecurity risk assessments, penetration testing, audit remediation, third-party risk management, privacy obligations, applicable regulatory and contractual requirements, and cyber insurance considerations.
Strong analytical, decision-making, and problem-solving skills, including the ability to lead during high-impact infrastructure, cybersecurity, and business continuity events.
Ability to develop and maintain policies, standards, procedures, inventories, architecture diagrams, and operational runbooks and incorporate security and resilience requirements into projects and technology acquisitions.
Experience working within an IT service management environment and applying disciplined incident, problem resolution, change, asset, and service-level management practices.
Valid Class C driver’s license.
Proficiency in English.

Nice To Haves

Experience leading infrastructure and cybersecurity operations in a multi-site, hybrid-cloud environment.
CISSP or CISM certification.
Additional relevant certifications, such as CCSP, CRISC, Microsoft Certified: Cybersecurity Architect Expert, Microsoft Certified: Azure Solutions Architect Expert, GIAC incident response certifications, ITIL, or a recognized business continuity or disaster recovery certification.
Spanish language skills.

Responsibilities

Administer, monitor, maintain, and troubleshoot enterprise LAN, WAN, wireless, internet, VPN, SD-WAN, firewall, and voice services across company offices, facilities, cloud environments, and third-party connections.
Configure and support routers, switches, wireless access points and controllers, firewalls, network appliances, circuits, and related management platforms in accordance with approved standards.
Monitor network availability, performance, capacity, and security; investigate alerts and incidents; restore service; document root causes; and implement corrective and preventive actions.
Maintain network services and configurations, including IP addressing, DNS, DHCP, routing, switching, VLANs, segmentation, quality of service, secure remote access, and connectivity to cloud and hosted services.
Lead selection, implementation, integration, and lifecycle management of third-party infrastructure and cybersecurity platforms, including identity and multifactor authentication, backup and recovery, endpoint and systems management, email security, endpoint detection and response, firewalls, and vulnerability management.
Manage external service providers and strategic vendors, defining service-level requirements, monitoring performance, managing contracts and costs, and ensuring timely remediation of service or control gaps.
Provide governance and operational oversight of Security Operations Center and Managed Detection and Response services, including alert quality, escalation paths, threat hunting, incident coordination, reporting, service reviews, and continuous improvement.
Lead design, implementation, monitoring, and reliable operation of enterprise networks across company facilities, cloud environments, and third-party connections.
Protect the enterprise network, systems, cloud services, applications, and data through layered security architecture, segmentation, secure configuration, continuous monitoring, threat intelligence, containment, and remediation.
Serve as the organization’s cybersecurity lead and maintain a risk-based security program aligned with recognized frameworks and applicable legal, regulatory, contractual, privacy, and insurance requirements.
Establish and oversee vulnerability, patch, configuration, and exposure management programs; prioritize remediation based on risk and verify completion within defined timeframes.
Oversee identity and access management, including privileged access, least-privilege controls, access reviews, secure authentication, and timely provisioning and deprovisioning.
Develop, maintain, and exercise the cybersecurity incident response plan, leading preparation, detection, triage, containment, eradication, recovery, evidence preservation, communications, and post-incident reviews with relevant parties.
Lead IT components of business continuity and disaster recovery, including business impact analysis, recovery strategies, backup integrity, recovery objectives, runbooks, alternate communications, and scheduled recovery tests.
Coordinate security assessments, penetration testing, audits, cyber insurance reviews, and third-party risk evaluations; track findings and report remediation status to leadership.
Create, maintain, communicate, and enforce infrastructure and cybersecurity policies, standards, procedures, inventories, architecture diagrams, and operational runbooks.
Partner with business and IT stakeholders to incorporate security and resilience requirements into projects, technology acquisitions, cloud services, and system changes.
Provide executive-level reporting on infrastructure health, cybersecurity risk, incidents, vulnerabilities, vendor performance, service availability, recovery readiness, and improvement priorities.
Provide escalation support and participate in an on-call rotation for critical infrastructure, cybersecurity, and business continuity events.
Perform other job-related duties as assigned.