OT Security Engineer (Hybrid/Remote)

Job Description OT Cybersecurity EngineerLocation: Bethesda, MD (Hybrid – 3 days onsite)Employment Type: Long-term contract or contract-to-hireClearance: Must be able to pass a standard background check and obtain a Public Trust ClearanceWork Authorization: U.S. Citizenship requiredMacro Pros has an immediate opening for an OT Cybersecurity Engineer to support the security of Operational Technology (OT) environments, including building automation, utilities, and other critical facilities systems. This role supports a client in Bethesda, Maryland.Candidates must currently live in the Washington, DC metro area and be willing to work onsite in Bethesda three days per week.What You'll Do:Assist with inventory and documentation of OT/ICS assets and networksMaintain OT network and data flow diagrams, including segmented zonesSupport monitoring of OT network segments for unusual or suspicious activityHelp triage OT-related security alerts and coordinate with cybersecurity and facilities teamsAssist with vulnerability tracking, patching/firmware planning, and basic system hardeningContribute to OT risk assessments, security documentation, and compliance efforts (e.g., NIST-based controls)Work with facilities, biomedical/clinical engineering teams, and vendors to plan secure changes and maintenance activitiesHands-On Experience With:OT, controls, or building/facility systems (BAS/BMS, HVAC, utilities, PLCs)IT and cybersecurity fundamentals (networking, firewalls, monitoring, vulnerability management)Core networking and security concepts (TCP/IP, segmentation, least privilege, logging)Clear technical documentation and communication with both technical and non-technical teamsPreferred Qualifications:Minimum of 6 years of federal government experienceExperience with OT or industrial systems (building automation, power/backup systems, lab or facility controls)Experience with OT/industrial protocols (BACnet, Modbus)Knowledge of security frameworks (NIST SP 800-82, NIST SP 800-53, CIS Controls)Entry-level certifications such as Security+, Network+, CySA+, or OT/ICS-focused trainingExperience with OT security platforms (Nozomi, Dragos, Claroty)Familiarity with federal security frameworks (FedRAMP, FISMA, RMF, NIST CSF, NIST SP 800-series)Basic Qualifications:Bachelor's degree in cybersecurity, computer science, engineering (mechanical, electrical, controls, systems), IT, or a related fieldor an equivalent combination of education, training, and experienceWork Environment:Onsite in Bethesda three days per week (flexible on days) and two days remoteOccasional off-hours work to support maintenance windows or incident responseRegular access to mechanical rooms, plants, labs, and clinical areas (PPE and safety procedures required)