Sergio G. Email & Phone Number

Bozeman, Montana, US

• Primary responsibility is to safeguard the company's digital assets, data, and network infrastructure. Leveraging a range of advanced cybersecurity tools and technologies.Key Tools and Technologies:
• Zscaler ZIA: Ensures secure internet access by inspecting web traffic for threats and enforcing security policies.
• Zscaler ZPA: Provides secure, seamless access to internal applications without exposing the network to the internet.
• Imperva WAF: Protects web applications from various attacks such as SQL injection, cross-site scripting (XSS), and DDoS.
• Netography: Monitors network traffic for anomalies and potential threats, enabling proactive threat detection and response.
• Firemon: Automates and manages network security policies across multiple firewalls, ensuring consistent enforcement and compliance.

Bozeman, Montana, US

• Engineer assigned to all Cyber Security projects
• Ensure the stability, integrity, and operation of the network infrastructure
• Assist in the Design and Manage of security solutions
• Participate in the planning and execution of security audits
• Assisted in deploying and supporting the following: Splunk, Zscaler ZIA/ZPA, Netography, Plixer Scrutinizer, CyberArk
• Removal of unused security rules

San Diego, CA, US

• Provide technical expertise and project management for wide & local area networking, security infrastructure, business continuity
• Provide operational, technical, and analytical support for network infrastructure
• Support a LAN/WAN environment consisting of MPLS and VPN technologies for ~12 Corporate sites and 2 Data Centers
• Configure and Administer Cisco switches, routers, firewalls, load balancers, WAP devices
• Deploy Meraki Telecommuter solution
• Routing protocols including EIGRP and BGP

Mountain View, California, US

• Assist in the build/maintain/operation of multiple high availability Data Centers
• Data centers consist of multiple tier layers, security zones, partner and corporate access.
• Data centers contain production, pre-production as well as developer areas/zones
• Implement/recommend network solutions according to company’s requirements
• Install and configure routers, firewalls, switches and load balancers.
• Implement network security/code upgrades/troubleshooting/documentation/

• Various companies (Argent Mortgage, VueTechnology, CoreObjects, others), Southern California
• Design/Implement/Recommend network solutions according to customer's requirements
• Install and configure Cisco routers, firewalls, switches and VPN solutions.
• Design/Implement network security
• Work closely with vendors and providers to complete/provision projects
• Create documentation; train IT members on new procedures and hardware installations

US

• Oversee day-to-day 24x7 network operations for Questerra LLC.
• It includes 2 Corp Offices (Aliso Viejo, CA and Charlottesville, VA), Staging and a Production environment (Irvine, CA).
• The locations involve a total of 40-45 network devices, which include Cisco Routers (7200s, 3640s, 2610s), Cisco 6509s with Multilayer Switch Feature (fiber gig, copper gig and 10/100 blades), Cisco Pixs (525s, 515s).
• Assisted in the design and implementation of Production Data Center, Staging, and Corporate areas from ground zero. Duties included network gear installations, network design and implementations (routers, routing.
• Duties include new network designs/configurations/implementations for all sites, Corp/Staging/Production network security, troubleshooting, debugging and solve any problems, which might arise in the WAN, and/or LAN for.

El Segundo, CA, US

Maintain/build two staging areas. Each which consist of about 24Compaq NT4.0 Servers (1600s, 6400s, 8500Rs, DL380s and DL360s) including 3 complete Clusters and a Catalyst 6500 Cisco switch. Each staging area contains its own domain and has fiber network connectivity. Program VLANs on Cisco switches, build disk arrays, test and validate new hardware.

Seattle, WA, US

Administer and maintain five Novell Servers (two Novell file servers, one Novell server running backup software, one Novell server with Border Manager serving as a Proxy server). Three Windows NT 4.0 Servers (two Windows NT 4.0 servers, 1 mail server with Microsoft Exchange Server 5.5). One UNIX SGI server, five Baystack 450 switches in a cascade.

Provide technical support to customers and Distributors (VARs), by providing solutions to installations and usage issues of company flagship CAD systems. The platform coverage includes stand-alone Windows stations as well as networked, and UNIX.Validate customer reported trouble tickets and write defect report to the tracking system for further development.

Assist customers with deployment and integration issues regarding PC hardware and CAD/CAM systems (Microcadam, AutoCAD, AutoSurf & AutoCAD Designer).Arrange and give Technical seminars to promote CAD/CAM systems in local business environment and demonstrate the usability of CAD applications to companies with specific needs.Manage and maintain company’s PC.