Job Title: Info Sec Engineer III Work Place Flexibility: Hybrid Legal Entity: Entergy Services, Inc.-ESI (OLD)

*This is a hybrid position that can be filled in The Woodlands, TX, Little Rock, AR, Jackson, MS, New Orleans, LA.*

JOB SUMMARY/PURPOSE

This position assists in securing Entergy’s networks from internal and external threats across corporate Information Security (IS), Information Technology (IT), and Operational Technology (OT). The engineer will assist with the lifecycle management, expansion, and operational support of Network Access Control (NAC), Microsegmentation, and Certificate Management solutions across data centers, office buildings, and critical infrastructure. This role requires a high degree of attention to detail, strong troubleshooting capabilities, and the ability to build strong relationships with internal business partners and external vendors. The engineer will assist with the execution of processes, develop automation, and leverage analytical skills to create metrics and dashboards that maintain audit readiness for NRC Nuclear Cyber, NERC CIP, and Sarbanes-Oxley regulations.

JOB DUTIES/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.

MINIMUM REQUIREMENTS

Minimum education required of the position. Associate or Bachelor’s degree strongly preferred in computer science, cyber security or a related discipline or equivalent work experience.

Minimum experience required of the position

• Information Security Engineer III: 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

Minimum knowledge, skills and abilities required of the position

• 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%)

Any certificates, licenses, etc. required for the position None required, but technical or InfoSec certifications are a plus (e.g., CompTIA, ISACA, or ISC2).

Relevant vendor credentials or experience with the following is highly preferred:

• NAC: Cisco ISE, Aruba ClearPass, or ForeScout.
• Microsegmentation: Akamai Guardicore, Illumio, or Cisco Secure Workload.
• Certificate Management: Venafi, AWS Certificate Manager, Microsoft CA, or Keyfactor.

Work Conditions

Office environment with minimal physical requirements. As a provider of essential services, Entergy expects its employees to be available to work additional hours, to work in alternate locations, and/or to perform additional duties in connection with storms, outages, emergencies, or other situations as deemed necessary by the company. Exempt employees may not be paid overtime associated with such duties.

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As a provider of essential services, Entergy expects its employees to be available to work additional hours, to work in alternate locations, and/or to perform additional duties in connection with storms, outages, emergencies, or other situations as deemed necessary by the company. Exempt employees may not be paid overtime associated with such duties.