Senior Security Platform Engineer — On-Call 24/7

Galveston County Human Resources; Galveston (TX); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Health benefits

Family coverage

Retirement security (TCDRS)

Life insurance

Disability

Paid time off

Holidays

Wellness programs

Employee assistance

Job summary

The County of Galveston is seeking a Senior Security Platform Engineer to serve as the county's top cybersecurity technologist, responsible for configuring, integrating, and optimizing enterprise security platforms. The role leads security engineering efforts and provides advanced technical support during cybersecurity incidents.

You will ensure security controls operate effectively, produce actionable detection signals, and align with risk management.

Qualifications

• Requires Bachelor's degree in cyber security, computer science, information management or related field, or equivalent combination of education and experience.
• Requires four years of progressive experience in installation, maintenance, and operation of cybersecurity systems and applications or related technical role.
• Requires experience configuring and managing enterprise security platforms, including firewalls, endpoint protection, and detection systems.
• Requires strong understanding of secure network architecture, including DNS, DHCP, packet inspection, and firewall policy management.
• Experience with Cisco or Palo Alto firewalls, XDR or endpoint detection platforms, DNS-layer security solutions, and MFA systems.

Responsibilities

• Configures, maintains, and optimizes enterprise security platforms across endpoint, network, email, cloud, and identity environments.
• Tunes detection policies and controls to reduce false positives and improve signal quality.
• Ensures telemetry and logging integration across security systems.
• Implements security platform upgrades and configuration improvements.
• Performs advanced technical analysis during escalated security incidents.
• Identifies scope, root cause, and containment strategies during complex events.
• Implements containment and control adjustments as directed by Information Security Officer.
• Leads post-incident hardening and detection improvement efforts.
• Oversees vulnerability scanning processes and prioritizes remediation with infrastructure teams.
• Supports penetration testing activities and implements corrective actions.
• Recommends security control enhancements and platform improvements.

Skills

Enterprise security platforms

Firewalls

Endpoint protection

Detection systems

XDR

DNS-layer security

MFA systems

Education

Bachelor's degree in cyber security / computer science / information management or related field

Equivalent combination of education and experience

Tools

PowerShell

Python

SIEM integration

Job description

The County of Galveston is seeking a Senior Security Platform Engineer to serve as the county's top cybersecurity technologist, responsible for configuring, integrating, and optimizing enterprise security platforms. The role leads security engineering efforts and provides advanced technical support during cybersecurity incidents.

You will ensure security controls operate effectively, produce actionable detection signals, and align with risk management.