Entergy · 1 day ago
Info Sec Engineer III
The Woodlands, TX
Full-time
Hybrid
Mid Level
4+ years expEntergy is a provider of essential services, and they are seeking an Info Sec Engineer III to assist in securing their networks from internal and external threats. The role involves lifecycle management, operational support of security solutions, and compliance with regulatory requirements.
Electrical DistributionEnergyMarketingPower GridRetail TechnologyTrading Platform
Responsibilities
Network Access Control: Assist with the engineering, deployment, and execution of day-to-day operations of Network Access Control (NAC) technologies. This includes the management of authentication policies (802.1X/MAB), endpoint profiling, and posture assessment to secure wired, wireless, and VPN access across IT and OT environments
Microsegmentation: Execute the rollout and management of Software-Defined Microsegmentation tools. Focus on providing deep visibility and policy enforcement for East-West traffic within data centers and cloud environments, ensuring granular security that prevents lateral movement without disrupting critical services
Certificate Management: Administer and automate the lifecycle of digital certificates using enterprise certificate management platforms. Maintain Certificate Authorities (CA) and certificate validation infrastructures to ensure secure encryption across the enterprise
Strategy & Trend Analysis: Provide input to the development and implementation of the strategy, roadmap, and project delivery for network security in coordination with the Security Architecture and Enterprise Architecture functions. Monitor network security trends for their area of support and suggest improvements to policy, procedures, tools and technologies to enhance the security of Entergy’s network
Continuous Improvement: Support continuous improvement processes, operational excellence and deliver world-class network security solutions for all corporate and operational technology needs, including business operations, power generation units, electric substations, system control and data acquisition (SCADA) systems, distribution automation (DA), and advanced metering infrastructure (AMI)
Troubleshooting & Root Cause Analysis: Serve as an escalation point for complex network security issues. Lead efforts to identify, diagnose, and resolve technical friction between security controls and business applications, ensuring optimal performance and minimal operational impact
Data Analytics & Metrics: Utilize analytical skills to design, build, and modify dashboards and reporting tools (e.g., PowerBI or Splunk) that provide visibility into the effectiveness, maturity, and health of network security operations
Compliance & Regulatory: Assist with compliance efforts for network security, specifically requirements in support of North American Electric Reliability Corporation Critical Infrastructure Protection (NERC CIP), Nuclear Regulatory Commission (NRC) Nuclear Cyber (10 CFR 73.54), and Sarbanes-Oxley
On-Call & Operational Coverage : Participate in a 24/7, 365-day rotational on-call schedule to support critical infrastructure. Available to respond to urgent production issues outside of standard business hours, including nights, weekends, and holidays
Other duties as required
Qualification
Required
Associate or Bachelor's degree strongly preferred in computer science, cyber security or a related discipline or equivalent work experience
4+ years of demonstrated experience in network security administration including microsegmentation technologies, network access control, VPN solutions (client and site-to-site), PKI/certificate management, and enterprise security architecture
Strong interpersonal skills with demonstrated ability to coordinate effectively between internal teams, external vendors, and cross-functional stakeholders
Strong organizational and time management skills
Experience working in an on-call team rotation
Strong understanding of general networking and design, operating system platforms, security operations, cyber security monitoring, intrusion detection, secured networks and scripting languages
Strong understanding of regulatory and compliance requirements; (SOX, NERC CIP, and NRC Nuclear Cyber (10 CFR 73.54)
Understanding of security and attack frameworks such as Nation institute of Standards and Technologies (NIST) Cyber Security Framework (CSF), Cyber Kill Chain and MITRE ATT&CK
Self-directed and with the ability to operate with significant discretion and manage multiple tasks simultaneously
Excellent communication skills
Strong problem-solving skills
Available to travel (Up to 10%)
Preferred
Technical or InfoSec certifications are a plus (e.g., CompTIA, ISACA, or ISC2)
Relevant vendor credentials or experience with NAC: Cisco ISE, Aruba ClearPass, or ForeScout
Relevant vendor credentials or experience with Microsegmentation: Akamai Guardicore, Illumio, or Cisco Secure Workload
Relevant vendor credentials or experience with Certificate Management: Venafi, AWS Certificate Manager, Microsoft CA, or Keyfactor
Company
Entergy
At Entergy (NYSE: ETR), we power life.
10001+ employees
H1B Sponsorship
Entergy has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (22)
2024 (24)
2023 (30)
2022 (25)
2021 (10)
2020 (25)
Funding
Current Stage
Public CompanyTotal Funding
$1.3B2025-03-17Post Ipo Equity· $1.3B
1985-05-03IPO
Leadership Team
Drew Marsh
Chair and Chief Executive Officer
John O. Hudson III
SVP, federal policy, regulatory and government affairs
Recent News
2025-11-08
2025-11-06
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