Nate Rathjen Email & Phone Number

Leesburg, Va, Us

Leesburg, Virginia, Us

Part of two-person team responsible for all technology and most physical infrastructure of small government contractor and data science consulting firm. Responsible for administration of cloud services (AWS and G Suite), hypervisors (ESXi and XenServer), Linux servers, Windows servers and laptops, Active Directory, public websites, firewalls (Cisco ASA and Palo Alto), storage devices and storage area networks, databases (MySQL/MariaDB, PostgreSQL), phone systems and self-hosted PBXes, security applications (Nessus), and monitoring systems (Zabbix). Responsible for user support and occasional physical infrastructure work.Additional experience working with network equipment (switches, Wi-Fi access points, and routers), DevOps automation technologies (Ansible, Puppet, Jenkins, Nexus, and Docker), and Atlassian software products including Jira and Confluence.

System administrator responsible for the entire infrastructure of the SOC. Administers an internal Active Directory domain and associated Windows workstations and servers, internal Red Hat and CentOS servers, CentOS log collection appliances deployed to customer sites, ESXi hosts and a vCenter environment, network equipment including Cisco L3 switches and Palo Alto firewalls, and Dell Compellent and EqualLogic storage systems. Responsible for maintaining physical infrastructure, including cabling and hardware repair. Works on-call as necessary to ensure 24/7 uptime.Continued responsibility for developing new open source and threat intelligence gathering tools, as well as modifying existing ones to better integrate with an Arcsight ESM environment. Supports SIEM manager in deploying services to new customers and tuning log collection processes. Supports SOC analysis operations as needed.

Developed and leveraged existing open source intelligence gathering tools in aremote capacity.

Charlottesville, Va, Us

Assistant for Python-based third-year class in software design and engineering.Responsible for managing two laboratory sessions a week, answering studentquestions, and grading assignments

Falls Church, Virginia, Us

Assisted with a variety of internal and contracted security efforts, including draftingsections of contract proposals. Designed and stood up a network of honeypots toprovide threat intelligence to internal security operation centers. Assisted with thedevelopment of a new internal penetration testing process and practice range.

Manassas, Va, Us

Intern for a small business providing high-tech systems, services, & products to DoD,civilian agencies & commercial clients. Designed/developed a variety of C, C++ andJava programs for internal use & deployment onto submarines. Projects ranged fromwriting internal test tools from scratch to entire redesigns of existing components.