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CDM Smith

Full-service engineering and construction firm

Operational Technology Cybersecurity and Network Specialist

Security Engineering & ArchitectureConfirmed live in the last 24 hours
Full-timeDenver, CO, USA

About the Job

Requirements

  • U.S. citizenship is required due to federal contract requirements and/or eligibility for a U.S. government security clearance.
  • Intermediate knowledge of network technologies, including VLANs, routing, and next-generation firewalls.
  • Intermediate knowledge of Windows systems in OT environments, including domain membership strategies, patching constraints, antivirus/endpoint detection and response considerations, and change control.
  • Intermediate knowledge of virtualization environments such as VMware or Hyper-V.
  • Intermediate knowledge of cybersecurity principles relevant to OT industrial settings.
  • Fundamental understanding of SCADA and DCS configuration and implementation.
  • Familiarity with network protocols, architecture, and configuration, including Modbus, DNP3, EtherNet/IP, and OPC, as well as industrial network design considerations including availability, determinism, multicast traffic such as IGMP, and maintenance constraints.
  • Familiarity with industry regulations, standards, and frameworks such as NIST CSF, NIST 800-82, and ISA 62443.
  • Understanding of cloud-based or edge computing solutions as they relate to OT systems.
  • Awareness of disaster recovery, business continuity, and system resilience planning in OT settings.
  • Strong verbal and written communication skills for communicating with geographically diverse teams and clients with varying levels of knowledge.
  • Strong time management skills and ability to multitask and prioritize assignments to meet schedules and budgets.
  • Client-facing experience and comfort presenting or leading discussions with multidisciplinary teams.
  • Ability to mentor junior staff and adapt to different learning styles.
  • Bachelor’s degree in engineering, information systems, computer science, or a related field; equivalent experience may substitute for a degree.
  • Five years of related experience.
  • An appropriate and valid driver’s license is required.

Responsibilities

  • Independently develop OT networks with senior-level oversight and guidance.
  • Create basic to moderately complex control system architectures, network segmentation diagrams, detailed drawings, and specifications with general direction.
  • Design OT infrastructure, including SCADA servers, historians, virtualization hosts, domain services, patching architectures, secure remote access platforms, endpoint protection, data backup solutions, and industrial intrusion detection systems.
  • Develop IT/OT convergence solutions such as Microsoft Active Directory, virtualization server clusters, next-generation firewalls, multifactor authentication, and demilitarized zones.
  • Implement industry regulations, standards, and frameworks such as NIST CSF, NIST 800-82, and ISA 62443 to ensure adherence.
  • Apply risk-based engineering judgment to balance cybersecurity, operability, maintainability, and lifecycle cost in OT system designs.
  • Apply best practices for managing and securing Windows-based environments.
  • Evaluate legacy OT systems and provide strategic recommendations for improvements, migrations, or replacements based on criticality and risk.
  • Prepare design reports under limited supervision.
  • Review basic to moderately complex shop drawings, including cybersecurity project plans, network segmentation plans, firewall policies, control system components, and server or network rack layout diagrams.
  • Prepare OT cybersecurity and automation project budgets and construction cost estimates.
  • Prepare proposal sections and client presentations under general supervision.
  • Travel nationally or internationally as required to project sites, client meetings, factory tests, and system start-ups.
  • Perform other duties as required.

Desired Qualifications

  • Experience implementing or supporting the configuration of cybersecurity and network OT solutions.
  • CompTIA Security+, GIAC GICSP, ISC2 CISSP, or ISA/IEC 62443 certification, or ability to obtain one within six months.
  • Sector-specific experience in water/wastewater, facilities, or transportation.
  • Familiarity with SCADA/ICS cybersecurity assessments and mitigation strategies.

About the Company

CDM Smith

Full-service engineering and construction firm

CDM Smith is a full-service engineering and construction firm that serves public and private clients worldwide with solutions in water, environment, transportation, and energy. Its work covers the entire project life cycle—from planning and design to construction and ongoing management—through integrated teams of engineers, scientists, and construction professionals. The company distinguishes itself by delivering multi-disciplinary, end-to-end projects across major infrastructure sectors and focusing on long-lasting impacts and enduring value for clients. Its goal is to shape the present by meeting evolving needs with practical, reliable infrastructure solutions that stand the test of time.

Company size
5,001-10,000
Company stage
Not listed
Total funding
Not listed
Headquarters
Cambridge, MA
Founded
1947

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