Christopher Barnum
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Christopher Barnum Email & Phone Number

Cyber Security Engineer at Visa
Location: Ashburn, Virginia, United States 12 work roles 2 schools
1 work email found @rackspace.com 3 phones found area 518 LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 3 phones

Work email c****@rackspace.com
Direct phone (518) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Cyber Security Engineer
Location
Ashburn, Virginia, United States
Company size

Who is Christopher Barnum? Overview

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Quick answer

Christopher Barnum is listed as Cyber Security Engineer at Visa, a with 28536 employees, based in Ashburn, Virginia, United States. AeroLeads shows a work email signal at rackspace.com, phone signal with area code 518, and a matched LinkedIn profile for Christopher Barnum.

Christopher Barnum previously worked as Engineer III at Crowdstrike and Site Reliability Engineer at Vmware. Christopher Barnum holds Bachelors Of Science, Computer Engineering Technology from Suny Polytechnic Institute.

Company email context

Email format at Visa

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{first}.{last}@rackspace.com
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AeroLeads found 1 current-domain work email signal for Christopher Barnum. Compare company email patterns before reaching out.

Profile bio

About Christopher Barnum

Geek, Father, Rebel.Geek - My career follows my enthusiastic geeking out on innovation in hardware, software, workflow, both old and new. Father - Married with children and extremely grateful. Having a family reinforces the need to be efficient with time and priorities. I'm more critical of quality review to keep people from having to work late or get paged at 3am. I'm also more patient to mentor and present to a wider audience. Rebel - Originally "Rebel Scum", quoting Star Wars, I'm more than willing to question complacency. The term "That's how we always do it" can be an alarm. Bad code is not job security, its laziness. Poor documentation and non standardized procedures is a catastrophe waiting to happen. Let's be industries leaders in innovations and changing the game. My goal is to always optimize and automate myself out of a job.

Listed skills include Linux, Apache, System Administration, Troubleshooting, and 24 others.

Current workplace

Christopher Barnum's current company

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Visa
Visa
Cyber Security Engineer
Ashburn, Virginia, United States
Website
Employees
28536
AeroLeads page
12 roles

Christopher Barnum work experience

A career timeline built from the work history available for this profile.

Role listed

Ashburn, Virginia, United States

Engineer Iii

Current

Remote, Us

Jun 2024 - Present

Site Reliability Engineer

Palo Alto, Ca, Us

Experience working in FedRAMP NIST 800-53 EnvironmentSetup Azure Sentinel to achieve CMMC NIST 800-171 RequirementsUtilized Splunk and Solarwinds for proactive log and alert operationsIndependent Developer creating Active Automation of Manual Tasks with PipelinesUtilizes Concourse-Ci, Jenkins, Gitlab & ArtifactoryLanguages/Syntax used include bash, python, perl, yamlBinary Scanning for Malware and Vulnerabilities/CVE ViolationsGit merge triggered Terraform code scanning for linting, security, and errors.Automation eliminates wasted code reviews by issuing a pass/fail immediately. Creation of SBOM for shipping approved artifacts in-boundary to GovCloudMetrics & Alerts proactively track for issues before customers are affected.All Secrets Management Used Hashicorp VaultDeveloped an adapter solution for external secret manager use with concourse-ci

Oct 2021 - May 2024

Systems Engineer Ii

Seattle, Wa, Us

Served as a Amazon Linux SME across multiple teams. Developed automated Amazon Linux kernel management solution for Bare Metal HA MySQL Cluster. Tested, Benchmarked, and Qualified new hardware for fleet migrations.Prevented entire region wide service outages in EC2. Debugged and resolved software and hardware issues quickly. (GDB, strace )Developed Full CI/CD DNS backup serviceProactively monitor service metrics to investigate and solve potential problems. Create and manage Full CI/CD pipelines via CodeChange Management Bar Raiser - Check and Raise Quality of Change RequestsDocument run-books, service architecture, and package documentation.Primary languages: Bash / Ruby

May 2017 - Oct 2021

Customer Data Engineer

San Antonio, Texas, Us

Data Stores Support TeamSupport Customers with DbaaS Products that include:-Mysql (MariaDB, Percona, Oracle-MySQL)-Hadoop (Hortonworks)-RedisWith infrastructure support for:DebianRedhat/CentosOpenVZHAProxyArchitect Datastore Solutions for Customers.Troubleshoot and Resolve product interruptions.Document internal and external articles. Script tools to automate regular processes.Debug and report product issues.Brainstorm proactive product features.

Sep 2015 - May 2017

Linux Systems Administrator Ii

San Antonio, Texas, Us

Managed Cloud SupportManaged and advise customers on protocol for security and best practice.Work in a team environment to exchange support and knowledge. Create and maintain and troubleshoot solutions for various customers. Educate co workers and provide an escalation point for resolutions. Apache & Nginx Web Servers - Setup and Tuning for multiple hosts and routes.Varnish front end HTTP caching and configurationMemcache, Redis, MongoDB installation configuration and troubleshooting.Postfix - Setup mail relay and routing rulesMySQL - Maintenance, Tuning, and ReplicationSFTP/FTP/SSH - Configure secure jailed access for customersDNS - Rackspace Cloud DNS configuration and troubleshootingWeb Applications - Wordpress, Joomla, Magento, Drupal troubleshootingRackspace/Openstack Cloud Product API - to script deployments and modifications with BASH and Curl and Python

May 2013 - Sep 2015

Websphere-Support Systems Administrator

Albany, Ny, Us

As a systems administrator for WebSphere-Support at NYS Finance Regulation and Gaming (formerly NYS Taxation and Finance). My duties included;- the installation, maintenance and troubleshooting of the software listed below. - working with people across departments to accomplish agency goals. - learning and understanding new software independently. - after hours support and remote access administration.- documented and maintained standard work and procedures in a shared wikiSoftware worked with:IBM WebSphere Application ServerIBM HTTP ServerIBM Edge Load BalancingIBM AIXIBM CognosIBM WebSphere Commerce ServerIBM WebSphere Process ServerF5 Load Balancing ApplianceCA SiteMinderLanguages worked with:PHP, MySQL, Python/Jython, Perl, KSH, BASH.

Aug 2009 - Apr 2013

Help Desk

Resolve technical problems students had with equipment or accessing campus resources such as network login or wireless activation.

Aug 2008 - May 2009

Student Assistant

New York State Office Of The State Comptroller

Installed & AdministratedWindows Server 2003/R2/2008VMware ESX 3.0.2/3.5VMware VirtualCenter 2/2.5SQL Server 2005IIS 6/7DSM/APM Desktop Monitoring & ReportsEPO ePolicy Orechstrator / McAfeeResponsibilitiesAdministration with 300 Windows servers across 250 VMware Servers, with 2500 Users. Created policies & procedures to adhere to Security RequirementsVBScript/ SQL Scripts to automate common tasksResearched Vendor Hardware and Support AgreementsDocumented technical reports with Office and VisioBackup Imaging and Ghosting of Microsoft Servers

Jun 2008 - Aug 2008

It Consultant / Pc Technician / Programmer

Tech Valley Networking

On call status with the responsibility to travel to clients and provide them with technical support, and solutions toproblems reported. My position had me doing everything from hardware to software troubleshooting and repair. Thisincluded desktops, servers, and printer repair. With every upgrade, came the challenge of compatibility withproprietary software. All problems were solved, no matter what, with customer satisfaction in mind. When not onassignment, I also worked with Visual Basic.NET with SQL Server 2000 and Access to write interfaces to userdatabases.

Feb 2005 - Feb 2008

Co-Founder / Webmaster

Thewac.Net

Developed and maintained a community website with forums to service 500+ users on daily basis. Our websitereceived nearly 1000 hits a day on average. This website was written in PHP with MySQL for storage. An interfacewas written for end users to be used with browsers, while a second interface was written for a modified computergame to synchronize information. This project ended as college became more demanding.

Feb 2005 - Jan 2007

Computer Laboratory / Technical Support

Schenectady, Ny, Us

I monitored the lab, and assisted students with their work, tutored Visual Basic.NET, and fixed PC's. I built a Linux Computer Lab with Ubuntu 6.06 with Linux High-Availability for clustering.

Aug 2004 - May 2006
Team & coworkers

Colleagues at Visa

Other employees you can reach at visa.com. View company contacts for 28536 employees →

2 education records

Christopher Barnum education

Bachelors Of Science, Computer Engineering Technology

Suny Polytechnic Institute

Associates In Applied Science, Computer Networks & Systems

Schenectady County Community College
FAQ

Frequently asked questions about Christopher Barnum

Quick answers generated from the profile data available on this page.

What company does Christopher Barnum work for?

Christopher Barnum works for Visa.

What is Christopher Barnum's role at Visa?

Christopher Barnum is listed as Cyber Security Engineer at Visa.

What is Christopher Barnum's email address?

AeroLeads has found 1 work email signal at @rackspace.com for Christopher Barnum at Visa.

What is Christopher Barnum's phone number?

AeroLeads has found 3 phone signal(s) with area code 518 for Christopher Barnum at Visa.

Where is Christopher Barnum based?

Christopher Barnum is based in Ashburn, Virginia, United States while working with Visa.

What companies has Christopher Barnum worked for?

Christopher Barnum has worked for Visa, Crowdstrike, Vmware, Amazon Web Services (Aws), and Rackspace, The #1 Managed Cloud Company.

Who are Christopher Barnum's colleagues at Visa?

Christopher Barnum's colleagues at Visa include Edgar Ramos, Wassim Matar, Steven Whitmyer, Jackie Tang, and Sohaib Ahmad.

How can I contact Christopher Barnum?

You can use AeroLeads to view verified contact signals for Christopher Barnum at Visa, including work email, phone, and LinkedIn data when available.

What schools did Christopher Barnum attend?

Christopher Barnum holds Bachelors Of Science, Computer Engineering Technology from Suny Polytechnic Institute.

What skills is Christopher Barnum known for?

Christopher Barnum is listed with skills including Linux, Apache, System Administration, Troubleshooting, Servers, Dns, Mysql, and Linux System Administration.

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