Network Administrator

Profile

Network Administrator
The candidate will play a key role with network and security daily operations, including network troubleshooting, firewall changes, security auditing, and vulnerability management. Work with senior network and security engineers to implement large-scale improvement projects, including the deployment of new tools and services. Assist with onboarding new clients, including environment provisioning, customer connectivity, service integration, and security configuration. Provide production infrastructure support for our large and complex base of live clients. Manage, monitor, and troubleshooting systems with strong focus on continuous improvement. Write basic SQL queries to perform light database administrative tasks. Support third party infrastructure applications and services, such as Citrix XenApp, file transfer, and job scheduling. Adhere to CRD technical standards, policies, and procedures. Collaborate with business and software teams to create/streamline/automate support processes. Have a deep appreciation of why IT security is important to our company and our customers. Participate in incident response and troubleshooting efforts as issues arise. Participate in periodic weekend maintenance rotation. Bachelor’s degree in a technical or analytical discipline such as Computer Science, IT, MIS/CIS, Engineering, Financial Engineering, Science, Economics, Mathematics or Statistics. Should have 5+ years of working with various core infrastructure and web technologies, 3+ years with MS Windows Server system administration or application server support with experience patching and testing systems, 2+ years of experience working in critical production environments and 2+ years exposure (work or academic) to networking or security systems and concepts. Operational experience on an infrastructure/systems administration team supporting mission critical production systems in a Hybrid Windows and Linux environment is required. Experience with Amazon AWS Network services is required. Experience with VMWare vSphere is required. Experience with Cisco ASA, Palo Alto Checkpoint, or Juniper NetScreen firewalls is a plus. Experience with PowerShell is desired, and experience programming using APIs and version control systems is a plus. Practical experience working with DevOps tools like Rundeck, Ansible, Chef, Puppet is a plus. Competency with SAN operations is required. Knowledge of basic network architecture concepts (zones/DMZ, VLANs, segmentation, subnetting. LAN/WAN) is required. Strong understanding of network services (ex: DNS, DHCP, ARP, TCP/IP stack) is required. Good working knowledge of basic firewall configuration concepts (ACL, NAT/PAT, routing statements, ports, protocols, VPNs) is required. Basic understanding of dynamic routing protocols is a plus. Some experience collecting and analyzing packet captures using tools like Wireshark is required. Experience working with various security, identity management, and vulnerability management tools, such as SIEMs, IDS/IPS, DLP, anti-virus and access control systems is required. Practical experience working with SSL/TLS certificates and basic understanding of cryptography concepts is required. Experience with some web / application server technologies (ex: Apache HTTPD, IIS, Tomcat, JBoss, Java Virtual Machine, Weblogic, and WebSphere) is required. Good understanding of various Microsoft technologies – Active Directory, Group Policies, IIS, WSUS, SQL Server, DFS, NTFS etc. is required. Professional IT certifications are a plus.

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