{"id":4294741,"url":"https://alion.io/job/nov-ics-networksecurity-engineer","title":"ICS Network/Security Engineer","company":{"id":1814757,"name":"NOV","domain":"nov.com","url":"https://alion.io/company/nov-com","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"A","score":86,"open_postings":82,"ghost_share":0,"stale_share":0.524,"repost_share":0.037,"time_to_fill_p50_days":40,"computed_at":"2026-11-12T10:38:37Z"}},"role":"Security","role_family":"Security","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Houston, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Defense in Depth","optional":false},{"name":"OPC UA","optional":false},{"name":"VLAN","optional":false}],"status":"live","first_seen_at":"2026-11-13T18:03:42Z","employer_posted_date":"2026-11-13","last_verified_at":"2026-11-14T00:42:15Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"NOV is seeking a self-motivated ICS Network and Security Engineer to join the Rig Technologies team. In this role, you will work with technical leaders across the Digital Products group to select, deploy, and validate cybersecurity controls that reduce risk and support security and compliance requirements.\nYou will also assess product network architectures and software implementations against customer requirements. The role has a strong operational technology (OT) networking focus, including secure network design, segmentation, connectivity, and controlled access to rig and industrial systems. You will help ensure that security controls are appropriate for each product, clearly documented, and maintained throughout the product lifecycle.\n Design and implement secure OT network architectures aligned with IEC 62443, NIST 2.0, and Purdue Model standards.\nConfigure, manage, and maintain firewalls, VLANs, and Layer 2/3 switches to achieve defense-in-depth segmentation.\nPerform product risk assessments, develop remediation plans, and track mitigation progress.\nConduct vulnerability assessments, penetration testing, and real-time monitoring of OT environments.\nDevelop, enforce, and maintain security policies, procedures, and change-management documentation.\nCollaborate with engineering, operations, and project teams to embed security controls into new and existing systems.\nMaintain up-to-date network topology diagrams, configuration baselines, and incident-response playbooks.\nProvide technical guidance, training, and mentorship to cross-functional staff on OT security best practices.\nStay current with emerging threats, industry standards, and regulatory requirements affecting industrial networks.\nSupport audit readiness and assist with security-clearance requirements as needed.\n Bachelor’s degree in Computer Science, Electrical Engineering, Computer Engineering or a related Cybersecurity discipline.\n5+ years of hands-on experience securing industrial control system networks.\nDeep knowledge of IEC 62443, NIST Cybersecurity Framework, and Purdue Model security principles.\nProficiency in firewall configuration, VLAN design, and Layer 2/3 switching technologies.\nDemonstrated expertise in network segmentation, zone-based security, and OT protocol security (e.g., Modbus, OPC-UA, Profinet/Profibus).\nFamiliarity with Secure Remote Access and network monitoring architectures.\nExperience conducting product risk assessments and developing remediation plans.\nStrong analytical, problem-solving, and incident-response skills.\nExcellent communication and teamwork abilities across multidisciplinary groups.\nExperience managing and securing OT Environments.\nAbility to obtain and maintain any required security clearance.\nPreferred Qualifications\nRelevant certifications such as CISSP, GICSP, CCNA/CCNP Security, or equivalent preferred.\nExperience managing and securing network used in Rig Drilling industry.","description_format":"text","description_chars":2931,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Information Security","Petroleum & Mining Engineering","Oil & 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