Demo

Network Security Engineer

PTR Global
Irving, TX Contractor
POSTED ON 7/25/2026
AVAILABLE BEFORE 8/23/2026

W2 Only

Job Description:

Must-Haves / Core Skillset:

Micro-Segmentation and Zero Trust:

  • Hands-on experience with workload-level segmentation and lateral-movement prevention.
  • Demonstrated ability to move from visibility to enforcement safely in production environments.

Illumio or Equivalent Platform Experience:

  • Strong understanding of VEN agents, SaaS policy engines, enforcement modes, and migration considerations.
  • Comfort working directly with vendor engineering teams during live operational issues.

Traffic and Telemetry Analysis:

  • Strong proficiency with SIEM tools (especially time-based analysis, distributions, and baselining).
  • Ability to reason about event ingestion pipelines and end-to-end telemetry delivery.

Operating Systems and Infrastructure:

  • Solid Linux and Windows server fundamentals.
  • Understanding of application communication patterns, service dependencies, and network flows.

Operational Maturity:

  • Experience with production change management and incident response.
  • Ability to halt or delay enforcement when telemetry or validation is insufficient.

Communication and Influence:

  • Ability to clearly communicate technical risk, impact, and recommendations to engineers, leadership, and vendors.
  • Comfortable translating telemetry and failures into executive-level summaries.

Mission (Overarching Goal):

  • Advance the enterprise Zero Trust micro-segmentation program, delivering safe, auditable, and scalable traffic visibility and policy enforcement across hybrid environments (on-prem and cloud). This role ensures operational reliability, policy confidence, and vendor accountability for Illumio SaaS–based segmentation at enterprise scale.

Day-to-Day Responsibilities:

  • Operate and mature the Illumio micro-segmentation platform (SaaS with limited on-prem presence), including VEN agent lifecycle management across Windows, Linux, and future AIX workloads.
  • Design, validate, and deploy least-privilege segmentation policies, ensuring policy changes can be safely verified via traffic telemetry before and after enforcement.
  • Analyze traffic flow telemetry and delay metrics across ingestion pipelines and SIEM tooling to validate platform health, identify regressions, and distinguish policy issues from platform or vendor constraints.
  • Lead incident response and vendor escalation with Illumio engineering, including capacity constraints, SaaS scaling events, maintenance windows, and potential data integrity risks.
  • Partner with Network Engineering, NOC/NMC, application teams, and platform owners to coordinate production changes, policy deployments, and change-management activities.
  • Maintain and evolve security standards, baselines, and deployment guidance for enterprise micro-segmentation, aligning to internal governance, audit, and risk requirements.
  • Support large-scale onboarding and migration efforts, including SaaS cutovers, phased policy enforcement, and certification of segmentation controls for high-risk and payment applications.

Nice-to-Haves (Certifications / Extras):

Security and Architecture:

  • CISSP, CCSP, or comparable security architecture certification
  • Zero Trust–focused training or vendor micro-segmentation certifications

Cloud and Identity:

  • Familiarity with Azure and enterprise IAM concepts (SaaS authentication, RBAC, API access)

Advanced Platform Integration:

  • Experience integrating segmentation telemetry into SIEM, data lakes, or automation pipelines
  • Exposure to policy certification, audit traceability, or regulatory reporting.


Additional Skills:

  • Micro-Segmentation
  • Network Macro-Segmentation

In this contingent resource assignment, candidate may:

  • Consult on or participate in moderately complex initiatives and deliverables within Information Security Engineering and contribute to large-scale planning related to Information Security Engineering deliverables.
  • Review and analyze moderately complex Information Security Engineering challenges that require an in-depth evaluation of variable factors.
  • Contribute to the resolution of moderately complex issues and consult with others to meet Information Security Engineering deliverables while leveraging solid understanding of the function, policies, procedures, and compliance requirements.
  • Collaborate with client personnel in Information Security Engineering.

Required Qualifications:

  • 4 plus years of Information Security Engineering experience, or equivalent demonstrated through one or a combination of the following: work or consulting experience, training, military experience, education.

Salary : $50 - $60

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