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Application Security Consultant

Estuate Inc.Houston, TX🇺🇸United StatesPosted 31 Aug 2026

Why This Role Stands Out

This Application Security Consultant role at Estuate Inc. offers a fantastic opportunity to lead critical security initiatives for a diverse web application portfolio, driving secure development practices and safeguarding vital infrastructure. If you are a seasoned cybersecurity professional with a passion for application and web security, eager to make a significant impact in a collaborative environment, this on-site Houston position is an excellent next step in your career.

Quick Overview

Seniority
Mid Senior
Work mode
On Site
Location
Houston, TX, United States
Posted
Yesterday
PythonPowerShellBash.NETAWSAzurePenetration TestingWAFZero Trust

Job Description

Job Title: Senior Cybersecurity Consultant - Application Security / Web Security

Location: Houston, TX (Onsite)

Contract

Key Responsibilities:

  • Lead security assessments and vulnerability management across the full portfolio of ~90 .NET-based web applications (customer-facing and internal)
  • Design and implement Web Application Firewall (WAF) policies and DDoS mitigation for customer-facing platforms
  • Perform application security reviews of .NET/full-stack codebases; embed SAST/DAST tooling into CI/CD pipelines
  • Drive secure Software Development Lifecycle (SDLC) and DevSecOps practices in partnership with .NET engineering teams
  • Monitor, detect, and respond to cyber threats targeting public-facing infrastructure
  • Conduct penetration testing and coordinate remediation across both customer-facing and internal applications, prioritized by risk
  • Ensure compliance with NERC CIP and other utility-sector regulatory requirements, including access management and incident response obligations
  • Evaluate and harden cloud infrastructure security (AWS/Azure) supporting the application portfolio
  • Apply Zero Trust principles across internal and customer-facing environments
  • Partner with IT, application, and infrastructure teams to embed security best practices
  • Prepare security reports and risk assessments for leadership

Required Skills & Experience:

  • 8+ years of experience in cybersecurity, with a strong focus on application and web security
  • Hands-on application security experience with .NET/full-stack environments (secure coding review, SAST/DAST integration)
  • Strong hands-on experience with WAF, DDoS mitigation, and vulnerability management tools
  • Solid understanding of secure SDLC and DevSecOps practices
  • Experience with cloud security (AWS and/or Azure)
  • Working knowledge of NERC CIP or other energy/utility sector compliance frameworks
  • Scripting ability (Python, PowerShell, or Bash) for automation of security tasks
  • Relevant certifications preferred: CISSP, CEH, OSCP, or equivalent
  • Strong communication skills to work with both technical teams and leadership

Preferred Qualifications:

  • Prior experience in the energy/utility sector, particularly with OT/IT convergence awareness
  • Experience securing high-traffic, customer-facing digital platforms alongside internal business applications
  • Familiarity with SIEM tools and incident response processes
  • Zero Trust architecture implementation experience

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