Randall Chains, Developer in Millsboro, United States
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Randall Chains

Verified Expert  in Engineering

SecOps Developer

Location
Millsboro, United States
Toptal Member Since
January 30, 2023

Randall is a cybersecurity professional with nearly a decade of security operations experience with federal and state governments. He has worked for several commercial clients with great success. Randall previously worked in a network operations capacity for multiple international telecoms.

Availability

Part-time

Preferred Environment

Cybersecurity

The most amazing...

...client network and security issues I've resolved provided great value value to the companies involved.

Work Experience

Security Operations Engineer

2012 - 2021
Verizon
  • Led operational security activities. Planned and organized the daily workload. Delegated work and provided led to accomplish missions on time. Experienced DoD cybersecurity, NIST, and a risk management framework in network information security.
  • Set up firewall rules, configuration changes, network, and VPN creation. Maintained an SoC environment. Led incident monitoring. Investigated and responded utilizing SIEM tools and open-source intelligence (OSINT) for daily reports and updates.
  • Managed SoC ops to provide timely analysis, identification, remediation, escalation, and produce reports of security incidents. Conducted vulnerability scanning and reports, incident response, triage, escalation, and recommendations.
  • Conducted risk assessments and remedial plans. Designed SSL/VPN solutions for the Marine Corps enterprise network to fit into information assurance suites. Provided network and security operations support for garrison and field operations.
  • Provided a change management request and management for software and application, and hardware upgrades. Enhanced network element performance and resource utilization. Ensured daily activities were aligned with company policies and objectives.
  • Performed regular security and risk assessments, analysis of network and systems-related security events, and risk mitigation. Maintained complex security systems according to industry best practices to safeguard data, networks, and systems.
  • Managed incident response utilizing Splunk, ArcSight, Sguill, Kibana, Fidelis Network Command Post, and open-source intelligence (OSINT). Researched and analyzed incidents. Identified significant factors and gathered pertinent data.
  • Set up MSSP operations, firewalls, VPN, TCP/IP, and network troubleshooting. Protected, prevented, and detected threats, risks, vulnerability assessments, and management.
  • Worked with DoD and the Federal government's information security environment. Orchestrated SoC and international telecom network operation centers (NOC) environments. Provided confidentiality, integrity, availability, and best industry practices.
  • Directed tasks and schedules. Ensured timely and proper application of network and security maintenance on assets and infrastructure according to established guidelines and vendor instructions.
Technologies: Network Security, Security Policies & Procedures, Policies & Procedures Compliance, Security, IT Security, Policy Development, IT Management, SIEM, SecOps

Firewall Upgrades

Worked in a managed security service provider's (MSSP) capacity, SoC firewall upgrade project, a firewall firmware upgrade of over 500 firewalls, and rebuilding end-of-life firewalls. These upgrades and rebuilds are continuously ongoing projects as clients come and go.
2016 - 2018

Master's Degree in Cybersecurity Technology

University of Maryland Global Campus - College Park, Maryland

MAY 2013 - PRESENT

ITIL

AXELOS

SEPTEMBER 2012 - PRESENT

CEH

EC-Council

JUNE 2011 - PRESENT

CISSP

(ISC)²

Industry Expertise

Cybersecurity, Network Security

Other

CISSP, Security Policies & Procedures, Policies & Procedures Compliance, Security, IT Security, Policy Development, IT Management, SecOps, Critical Infrastructure, Networking, Incident Response, Incident Management, Firewalls, Risk Analysis, Managed Security Service Providers (MSSP), Cisco, ASA, Business Continuity & Disaster Recovery (BCDR), IT Service Management (ITSM), Certified Ethical Hacker (CEH), SIEM

Paradigms

ITIL

Languages

HTML

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