Sr Cybersecurity Engineer - Tenabloe One (IT & OT/IoT)

Job Title: Senior Cybersecurity Engineer — Tenable One

Location: Remote – Need to be based in the Greater Dallas/Fort Worth area

Duration: 9 Months

• Design the end-to-end Tenable One architecture: scanner/sensor placement, network segmentation considerations, data flow, and integration points across a distributed global footprint.
• Produce a target-state architecture and phased deployment roadmap covering IT and OT/IoT scopes.
• Define asset discovery, tagging, and grouping strategy to support accurate exposure scoring and business-context reporting.
• Advise on passive vs. active collection methods in sensitive OT environments where active scanning carries operational risk.

• Deploy and configure Tenable One and its component modules — Tenable Vulnerability Management, Tenable Security Center, Tenable OT Security, Nessus scanners, Nessus Agents, and Tenable Identity Exposure / Attack Surface Management as scoped.
• Stand up scan policies, credentialed scanning, agent deployment at scale, and scan scheduling aligned to customer change windows.
• Build integrations with adjacent systems: CMDB/ITSM (ServiceNow), SIEM, ticketing, identity, and cloud provider accounts.
• Validate coverage and data quality; remediate scan gaps, credential failures, and false positives.

• Establish the vulnerability and exposure management operating model: SLAs, risk-based prioritization, remediation workflows, exception handling, and escalation paths.
• Build dashboards and executive-level reporting on exposure posture, remediation velocity, and coverage.
• Automate recurring workflows (ticket creation, asset reconciliation, reporting) via API and scripting.
• Document runbooks, standard operating procedures, and knowledge transfer materials; train customer analysts and engineers.
• Partner with IT, OT/facilities, and application owners to drive adoption and remediation accountability.