Evergreen: Senior Network/Security Engineer

Evergreen: Senior Network/Security Engineer Ad Hoc is a technology company that empowers organizations to deliver scalable, impactful digital services. Using modern, agile methods, our team creates products that meet people’s needs and transform their experience of government. Primary Responsibilities Experience with Palo Alto, Panorama OS (PAN-OS), Firewalls, SIEM, Security Configuration Management (SCM), migration, security and compliance, RBAC and access models, Data Loss Prevention (DLP), Strata Cloud Manager Operate and engineer enterprise web proxy, deliver reliable policy changes, and diagnose issues down to packet level. Configuring Network ACLs, firewalls, and security groups to enforce policy and isolate sensitive workloads. Design secure network infrastructure enforcing Zero Trust principles for the DXP. Ensure 100% compliance with IRS/NIST boundary protection standards. Forward/reverse proxy modes; explicit vs transparent; PAC/WPAD design and distribution. Safe bypass strategies (domain/SNI/IP/risk-based) without degrading coverage. Layer 3 & Internet Fundamentals Routing & addressing (CIDR, MTU/fragmentation/PMTUD, NAT44/66, VRFs), basic BGP/OSPF, DNS recursion/forwarding and failure modes. Ports & Protocols TCP/UDP behavior, ephemeral ranges, TLS handshake/SNI, and middlebox interactions (no QUIC/ requirement). PCRE Writes and reviews complex PCRE (lookarounds, backreferences, atomic groups) with an eye for performance (avoid catastrophic backtracking). Troubleshooting: Packets + Analytics tcpdump/Wireshark proficiency (TLS/ analysis, TCP dynamics). Log correlation at scale (e.g., Splunk/ELK) to isolate issues off-box (client, network, IdP, upstream). Can distinguish origin responses vs proxy-generated errors and document root cause. Clear stakeholder comms; triage correctly under load—doesn’t treat every noisy issue as P1. Goals Normalize firewall / Panorama versions Get Panorama 12.x integrated with Strata Cloud Manager as the “real” central manager Upgrade the DLP plug-in so it works cleanly in SCM Preferred Qualifications Current or previous Federal Government Clearance Company‑subsidized health, dental, and vision insurance Flexible PTO 401(k) with employer match Paid parental leave after one year of service Employee Assistance Program Ad Hoc LLC is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, national origin, ancestry, sex, sexual orientation, gender identity or expression, religion, age, pregnancy, disability, work‑related injury, covered veteran status, political ideology, marital status, or any other factor that the law protects from employment discrimination. We value the unique skills gained through military service and encourage veterans and transitioning service members to apply. In support of various state and city equal pay transparency laws, Ad Hoc job descriptions feature the starting range we reasonably expect to pay to candidates who would join our team with little to no need for training on the responsibilities we've outlined above. Actual compensation is influenced by a wide range of factors including but not limited to skill set, level of experience, and responsibility. The range of starting pay for this role is $153,000-187,000. Our recruiters will be happy to answer any questions you may have, and we look forward to learning more about your salary requirements. #J-18808-Ljbffr Ad Hoc LLC