Network Security Engineer

Client is seeking a detail-oriented Cybersecurity Engineer to support a leading energy provider at nuclear generation facilities in Pennsylvania. This role is responsible for supporting, building, and administering cyber defensive infrastructure that protects vital plant operational systems and dedicated lab testing environments. Working alongside experienced subject matter experts, you will focus on firewall traffic control, SIEM dashboard and alert engineering, and supporting critical OT infrastructure upgrades., Support and administer cyber defensive infrastructure across plant systems and lab environments.

Maintain and update Cisco Firepower firewall rule sets to manage and control traffic on plant networks.

Perform Splunk SIEM engineering, including alert tuning, detection engineering, and dashboard updates.

Utilize detailed technical documentation to run tests, verify system updates, and execute patch maintenance.

Collaborate with Senior Cyber SMEs to troubleshoot lab issues and implement verified changes in plant environments.

Strictly adhere to nuclear work management, change control, and configuration control processes.

Minimum 5+ years of hands-on experience in cybersecurity engineering or network security.

Demonstrated hands-on experience with Cisco Firepower firewalls (rule set modification, traffic filtering).

Hands-on experience with Splunk SIEM engineering (alert creation, tuning, and dashboard updates).

Solid technical understanding of server systems and industrial network architecture.

Ability to pass full nuclear critical group security processing, including background checks, fitness-for-duty screening, drug/alcohol tests, and psychological assessments.

Bachelor s degree in Cybersecurity, Computer Science, Engineering, or a related field.

Preferred Qualifications

Previous experience in nuclear power operations or utility sector work management processes.

Background in Operational Technology (OT), SCADA, or industrial control system (ICS) security.

Active Cisco certifications (e.g., CCNA) or Splunk certifications.