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Joseph Seyfried Email & Phone Number

Senior Systems Architect | Expert in Networking, Cloud, Zero Trust, and Cybersecurity | Transforming Security Postures for Modern Enterprises at Hamilton Barnes 🌳
Location: Mclean, Virginia, United States 5 work roles 1 school
1 work email found @xorsecurity.com LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

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Role
Senior Systems Architect | Expert in Networking, Cloud, Zero Trust, and Cybersecurity | Transforming Security Postures for Modern Enterprises
Location
Mclean, Virginia, United States

Who is Joseph Seyfried? Overview

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Quick answer

Joseph Seyfried is listed as Senior Systems Architect | Expert in Networking, Cloud, Zero Trust, and Cybersecurity | Transforming Security Postures for Modern Enterprises at Hamilton Barnes 🌳, based in Mclean, Virginia, United States. AeroLeads shows a work email signal at xorsecurity.com and a matched LinkedIn profile for Joseph Seyfried.

Joseph Seyfried previously worked as Solutions Architect at Hamilton Barnes 🌳 and Security Architect at Xor Security. Joseph Seyfried holds Bachelor Of Applied Science (Basc), Biology, General from Stony Brook University.

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Email format at Hamilton Barnes 🌳

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{first}.{last}@xorsecurity.com
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Profile bio

About Joseph Seyfried

My passion is to help businesses meet their business needs and requirements. Some of the areas which I regularly help architect are:Threat modelingZero Trust ArchitecturePrivileged Access ManagementIdentity Access ManagementNetwork Security Secure authentication FIDO2, MFA, SAMLPKI SIEM integrations for security event logging and SOAR capabilitiesVulnerability management Qualys and CrowdstrikeMacro/micro segmentation

Listed skills include Cisco Technologies, Data Center, Windows, Troubleshooting, and 11 others.

Current workplace

Joseph Seyfried's current company

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Hamilton Barnes 🌳
Hamilton Barnes 🌳
Senior Systems Architect | Expert in Networking, Cloud, Zero Trust, and Cybersecurity | Transforming Security Postures for Modern Enterprises
AeroLeads page
5 roles

Joseph Seyfried work experience

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

Solutions Architect

Current

London, London, Gb

• Designed and implemented Privileged Access Management solutions enhancing security measures.• Developed Azure/AWS architecture and security protocols to ensure data protection and compliance.• Implemented Zero-trust architecture to strengthen network security and prevent unauthorized access.• Managed PKI, end-user device security, and asset management to safeguard sensitive information.Managed relationships with multiple vendors and held regular architecure design sessions to ensure integration with all systems in the design.Held regular peer reviews across teams to provide implementation guidance and to ensure DevSecOps flows

Jul 2023 - Present

Security Architect

Falls Church, Va, Us

• Increased application security by implementing DevSecOps methods, including DAST/SAST analysis• Reduced the time and resources needed for repetitive tasks by automating security and network functions using Python, Ansible, and Terraform.• Closed security gaps by creating threat models and working cross-functionally to implement controls• Monitored security tools across the environment, conducting log review and analysis, and continuously tuning and enhancing security parameters.• Led incident response management, developing and enforcing strategies for incident communications, IR exercises, and drills.• Led collaboration with cross-functional teams and business units effectively to ensure alignment with security policies and procedures.• Improved cloud security by implementing AWS and Azure best-practices and leveraging security tools• Implemented and maintained enforceable Information Security policies aligned to industry best practices, NIST-CSF, and ISO 27001.• Leveraged Threat Vulnerability Management tools to conduct automated scheduled scans and reports, working with IT and Engineering on remediation actions.• Ensured full transparency and awareness by maintaining strict security baselines and change logs• Maintain and enhance GRC tools and processes within information security to enhance visibility and transparency.• Optimized firewall and IAM policies

Jul 2020 - Jul 2023

Security Architect

Mclean, Va, Us

• Improved application security by implementing zero trust architecture• Collaborated with cloud engineering teams to optimize security configurations and policies in AWS and Azure.• Conducted cloud security assessments and provided recommendations for improvement.• Conducted vulnerability assessments and penetration testing to identify and remediate security weaknesses and vulnerabilities.• Supported the maintenance and management of firewalls, intrusion detection, and prevention systems.• Utilized SIEM/SOAR systems to monitor security events and respond to potential threats.• Managed access control and identity management solutions to protect sensitive data and resources.• Assisted in the implementation of encryption technologies to secure data in transit and at rest.• Conducted security audits and compliance assessments to ensure adherence to regulatory requirements.• Led incident response activities for firewall-related security incidents, quickly resolving and mitigating threats to minimize potential impact.• Closed security gaps by optimizing security policies including firewalls and NAC

Jun 2019 - Jul 2020

Senior Security Engineer

New York, Ny, Us

Network and Security Architect for the largest public health care system in the United States. During my tenure here I was the primary point of contact and SME for a wide array of both network and security technologies. Manage relationships with client technology & business managers and provide guidance where required within IT strategy, architecture & design.♦ Primary contact for Cisco Prime Infrastructure environment♦ RADIUS and TACACS migration from Cisco ACS to Cisco ISE.♦ Primary contact for operations and maintenance of Splunk environment.♦ Lead engineer for deploying and configuring Cisco ASA and Cisco FTD firewalls.♦ Design of deployment of F5 LTM/GTM environment, which led to successful migration to EPIC (electronic medical record system) and migration from Cisco GSS and Cisco ACE.♦ Primary contact for managing InfoBlox DNS and DHCP♦ Achieved kudos by discovering a fault in older access points causing 500+ to go down within a short frame, resulting in courtesy replacement of all defective APs by the vendor.♦ Successfully implemented greenfield deployment of Cisco Wireless to all hospitals and clinics, including 20,000+ access points.♦ Re-designed internet proxy policies for BlueCoat environment, resulting in a higher level of security for the organization.♦ Designed and implemented WAN architecture and data center technologies♦ Implement site-to-site VPN solutions for encrypted communication between customer and vendors.♦ Primary point of contact for Pulse Secure VPN environment.♦ Supported 1000+ router and switches.♦ Collaborated with Cisco to build SDA (Software Defined Access) pilot for a major hospital.♦ Provided both low level and high-level documentation of network infrastructure♦ Achieved successful consolidation of support hierarchy by offloading Tier 1 support from Central Engineering Team to Network Operations Center.♦ Provided troubleshooting support for complex issues requiring Tier 3 escalation.

Aug 2013 - Jun 2019

Network Solutions Consultant

Self-Employed

♦ Helped drive businesses forward by uncovering business challenges & recommending solutions to solve those challenges.♦ Provide highest level of technical consultancy to ensure problem resolution is achieved in the shortest possible time-frame♦ Setup up networks for various small businesses, including hardware installation and configuration, documentation♦ Develop processes and procedures for use by the Network team and third parties in the management of network environments

Aug 2010 - Aug 2013
1 education record

Joseph Seyfried education

  • Stony Brook University
    Stony Brook University
    General
FAQ

Frequently asked questions about Joseph Seyfried

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

What company does Joseph Seyfried work for?

Joseph Seyfried works for Hamilton Barnes 🌳.

What is Joseph Seyfried's role at Hamilton Barnes 🌳?

Joseph Seyfried is listed as Senior Systems Architect | Expert in Networking, Cloud, Zero Trust, and Cybersecurity | Transforming Security Postures for Modern Enterprises at Hamilton Barnes 🌳.

What is Joseph Seyfried's email address?

AeroLeads has found 1 work email signal at @xorsecurity.com for Joseph Seyfried at Hamilton Barnes 🌳.

Where is Joseph Seyfried based?

Joseph Seyfried is based in Mclean, Virginia, United States while working with Hamilton Barnes 🌳.

What companies has Joseph Seyfried worked for?

Joseph Seyfried has worked for Hamilton Barnes 🌳, Xor Security, Booz Allen Hamilton, Nyc Health + Hospitals, and Self-Employed.

How can I contact Joseph Seyfried?

You can use AeroLeads to view verified contact signals for Joseph Seyfried at Hamilton Barnes 🌳, including work email, phone, and LinkedIn data when available.

What schools did Joseph Seyfried attend?

Joseph Seyfried holds Bachelor Of Applied Science (Basc), Biology, General from Stony Brook University.

What skills is Joseph Seyfried known for?

Joseph Seyfried is listed with skills including Cisco Technologies, Data Center, Windows, Troubleshooting, Windows Server, Telecommunications, Security, and Switches.

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