Senior Firewall & Vulnerability Engineer — Hybrid (DC)

Peraton; Washington (District of Columbia); Hybrid; USD 135,000 - 216,000; Full time

Benefits offered by this job

Medical benefits

Dental benefits

Vision benefits

401(k)

PTO

Job summary

Peraton is hiring an experienced Network Security Engineer (Firewall & Vulnerability Management) to drive security improvements across federal programs. Hybrid work in Washington, DC with on-site Mon-Wed and up to two remote days weekly.

The role requires hands-on engineering across vulnerability management, patching, firewall security, IAM, and cloud security, aligned with NIST RMF and IRS Pub 1075. Strong documentation skills and independent delivery are essential.

Qualifications

• Bachelor's degree and 12 years of relevant experience; 4 years can substitute.
• Minimum 5 years hands-on enterprise cybersecurity experience.
• Experience configuring, implementing, and validating security controls.
• Ability to independently drive technical security improvements in production.

Responsibilities

• Lead vulnerability remediation governance, SLA targets, and escalation workflows.
• Configure Nessus; close coverage gaps across on-prem, cloud, and VDI.
• Correlate findings with SIEM tools (Sentinel, Varonis, Splunk).
• Implement security hardening, patching plans, and change controls.
• Deliver runbooks, SOPs, and technical documentation; report weekly.
• Support firewall, IAM, endpoint, and cloud security engineering activities.

Skills

Firewall engineering

Vulnerability management

Endpoint security

IAM / PIM / MFA

Cloud security (AWS/Azure)

SIEM (Microsoft Sentinel/Splunk)

Scripting (Python/PowerShell)

Patch management

Change management

Technical documentation

Education

Bachelor's degree in IT / CS / Cybersecurity

CISSP

OSCP

GIAC

CEH

Security+ or equivalent

AZ-500 / Azure Security Engineer

AWS Certified Security - Specialty

CISM

Tools

Tenable Nessus

MECM

Ivanti

Jamf

Microsoft Defender

Microsoft Entra ID / AD

Check Point

Palo Alto / Cisco

Microsoft Sentinel

Splunk

Varonis

Job description

Peraton is hiring an experienced Network Security Engineer (Firewall & Vulnerability Management) to drive security improvements across federal programs. Hybrid work in Washington, DC with on-site Mon-Wed and up to two remote days weekly.

The role requires hands-on engineering across vulnerability management, patching, firewall security, IAM, and cloud security, aligned with NIST RMF and IRS Pub 1075. Strong documentation skills and independent delivery are essential.