Cybersecurity Specialist & IT Support

Sellmark Corporation • Mansfield, TX

16h • Onsite

About The Position

The cybersecurity specialist will own all cybersecurity operations and compliance while serving as Level 2 Helpdesk escalation respondent. Primarily will be responsible for Zscaler, SentinelOne, Darktrace, and Wazuh platforms, audit readiness (CMMC), policy development, and AI governance.

Requirements

• Bachelor’s degree preferred or equivalent experience
• 4–6+ years IT support
• 2–4+ years cybersecurity
• Hands-on with Zscaler, SentinelOne, Darktrace, Wazuh
• Knowledge of CMMC/NIST
• Microsoft 365 / Azure AD
• Networking fundamentals
• Strong communication, problem-solving, and relationship-building skills

Responsibilities

• Own security operations across endpoints and systems
• Administer Zscaler (ZIA/ZPA), SentinelOne, Darktrace, and Wazuh
• Monitor alerts, investigate threats, and respond to incidents
• Configure EDR/XDR policies, anomaly detection, and SIEM rules
• Lead vulnerability remediation and endpoint hardening
• Troubleshoot identity, endpoint, and access issues
• Maintain documentation and evidence required for:
• Government audits
• Third-party assessments
• Internal security reviews
• Lead audits and align with CMMC/NIST 800-171
• Map controls across Zscaler, SentinelOne, Darktrace, and Wazuh
• Provide audit evidence and logging reports
• Escalation support for IT issues
• Troubleshoot endpoints, M365, Azure AD
• Support onboarding/offboarding
• Lead the development and enforcement of AI governance policies across Sellmark, ensuring safe and compliant use of AI technologies (e.g., Claude, ChatGPT, Microsoft Copilot, third-party AI tools).
• Define and enforce acceptable use policies for AI, including Prohibition of sensitive data input, approved vs non-approved AI tools
• Identify and mitigate AI-related risks, including: data leakage and exfiltration, intellectual property exposure, prompt injection and malicious AI manipulation, shadow AI usage across departments
• Implement technical controls to enforce AI policies using: Zscaler, endpoint protection tools, logging and monitoring via Wazuh / SIEM
• Collaborate with IT and leadership to: define secure AI adoption strategy, evaluate and approve new AI tools and vendors, establish governance frameworks for AI usage
• Monitor and audit AI usage across the organization and: detect unauthorized or risky usage patterns, provide reporting and recommendations
• Stay current with emerging AI threats, regulatory requirements, and best practices.

Benefits

• 401k with company match.
• Excellent Medical, Dental, and Vision Insurance (effective first of the month following 30 days).
• Generous paid time off
• Access to company wellness amenities: gym, sauna, chiropractor, cafeteria, and event space.
• Intensive training program with ongoing professional development and career growth opportunities.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 11-50 employees