Info Sec Engineer III

Entergy Corporation; The Woodlands (TX); On-site; USD 110,000 - 150,000; Full time

Job summary

Entergy is seeking an Info Sec Engineer III to safeguard networks across corporate IS/IT/OT domains. You will support NAC, microsegmentation, and certificate management while building automation and dashboards to drive audit readiness for regulatory frameworks.

The role requires strong collaboration with internal teams and vendors, a focus on security metrics, and a readiness to participate in on-call coverage and travel up to 25% as needed.

Qualifications

• Associate or Bachelor’s degree in computer science, cyber security or related discipline or equivalent work experience.
• 4+ years in information security engineering, with network security, NAC, PKI/certificate management, and security architecture.
• Experience deploying cloud security and segmentation in AWS/Azure/GCP.
• Familiarity with regulatory standards (NERC CIP, NRC Nuclear Cyber, SOX).
• Willingness to travel up to 25% and participate in on-call rotations.

Responsibilities

• Support NAC engineering, deployment, and day-to-day operations for IT/OT environments.
• Manage microsegmentation/macrosegmentation rollout and policy enforcement.
• Administer and automate certificate management and PKI infrastructure.
• Design automation and dashboards to monitor security operations and audit readiness.
• Assist with regulatory compliance and security program development.

Skills

Network security

Microsegmentation

Certificate management

Cloud security

On-call rotation

Data analytics

Education

Associate or Bachelor’s degree

Tools

Cisco ISE

Aruba ClearPass

ForeScout

Venafi

AWS Certificate Manager

Job description

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Location: The Woodlands, Texas, United States

Company: Entergy

Job Title: Info Sec Engineer III

PS Job Title: Info Sec Engineer III

Work Place Flexibility: Hybrid

Legal Entity: Entergy Services, LLC

***This position is based out of The Woodlands, TX and Little Rock, AR This position will be filled as a Info Sec Engineer III. Relocation assitance is not provided.***

JOB SU MMARY/PURPOSE

This position assistsin 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 withthe lifecycle management, expansion, and operational supportof Network Access Control (NAC), Microsegmentation, and Certificate Managementsolutions 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 relationshipswith internal business partners and external vendors. The engineer will assist with the execution of processes, develop automation, and leverage analytical skillsto create metrics and dashboards that maintain audit readiness for NRC Nuclear Cyber, NERC CIP, and Sarbanes-Oxleyregulations.

JOB DUTIES/RESPONSIBILITIES

• Network Access Control: Support the engineering, deployment, and execution of day-to-day operations supporting design and policy decisions for network access control. This incldues identity-based access policies, endpoint profiling rules, and posture assessment criteria, to secure wired, wireless, and VPN access across IT and OT environments. Assist in policy and exception management initiatives.
• Microsegmentation & Macroegmentation: Execute the rollout and management of both hardware and Software-Defined Microsegmentation tools. Focus on providing deep visibility and policy enforcement for East-West trafficwithin 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.
• Artificial Intelligence and Automation: Support the modernization of key operational processes through intelligent automation and AI-driven solutions. Design and implement automation platforms that reduce manual overhead, scale operations efficiently, and enable the team to accelerate delivery on security program goals. Proactively identify opportunities to automate workflows, enhance monitoring and decision-making, and strengthen organizational security and reliability—directly driving business impact and customer trust.
• 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 skillsto design, build, and modify dashboards and reporting toolsthat 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 & macrosegmentation 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.
• Knowledge and experience deploying and managing cloud security infrastructure and segmentation technologies within cloud platforms like AWS, Azure, or Google Cloud.
• Knowledge of cloud security, best practices, and industry standards.
• 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
• 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.
• 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.

Primary Location: Texas-The WoodlandsTexas : Woodlands || Arkansas : Little Rock

Travel Percentage: Up to 25%

An Equal Opportunity Employer, Minority/Female/Disability/Vets. Please click here to view the EEO page, or see statements below.

EEO Statement

The Entergy System of Companies provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, gender, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, marital status, amnesty, or status as a protected veteran in accordance with applicable federal, state and local laws. The Entergy System of Companies complies with applicable state and local laws governing non-discrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment including, but not limited to, recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.

The Entergy System of Companies expressly prohibits any form of unlawful employee harassment based on race, color, religion, sex, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status. Improper interference with the ability of the Entergy System of Company employees to perform their expected job duties is absolutely not tolerated.

Accessibility

Entergy provides reasonable accommodations for online applicants. Requests for a reasonable accommodation may be made orally or in writing by an applicant, employee, or third party on his or her behalf. If you are an individual with a disability and you are in need of an accommodation for the recruiting process please click here and provide your name, contact number, the accommodation requested and the requisition number that you are requesting the accommodation for. Employee Services will contact you regarding your request.

Additional Responsibilities

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.

The non-confidential portions of the affirmative action program for individuals with disabilities and protected veterans shall be available for inspection upon request by any employee or applicant for employment. Please [e-mail] to schedule a time to review the affirmative action plan during regular office hours.

WORKING CONDITIONS

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.

Please note:

Authorization to work in the United States is a precondition to employment in this position. Entergy will not sponsor candidates for work visas for this position.