Senior OT Cybersecurity Engineer

job summary:

Randstad is seeking a Senior Operational Technology (OT) Cybersecurity Engineer to support a critical infrastructure modernization initiative for a premier transportation client based in Washington, DC. In this role, you will work within a SAFe/Agile delivery framework to enhance network visibility, asset discovery, and security controls across complex Operational Technology (OT), Industrial Control Systems (ICS), and SCADA environments. Operating in accordance with TSA Rail Security Directives and NIST standards, you will collaborate with cross-functional teams to design, implement, and maintain robust security architectures that safeguard vital transit and wayside infrastructure against emerging cyber threats.

location: Washington, Washington, D.C.

job type: Contract

salary: $50 - 60 per hour

work hours: 9am to 5pm

education: Bachelors



responsibilities:

Architect, deploy, and manage security controls for Operational Technology (OT), SCADA, and Industrial Control Systems (ICS).

Execute network segmentation strategies and enforce boundary controls between enterprise IT and field-level OT networks using the Purdue Model.

Implement and configure OT security tools for asset discovery, continuous threat monitoring, and vulnerability management (e.g., Claroty, Nozomi Networks, Dragos, Tenable.ot).

Collaborate within a SAFe/Agile team structure, actively participating in sprint planning, backlog grooming, and daily standups to deliver priority security deliverables on schedule.

Conduct technical risk assessments and ensure alignment with TSA Security Directives, NIST SP 800-82, and IEC 62443 compliance frameworks.

Assist in establishing secure remote access mechanisms, centralized patching workflows, and incident response playbooks for critical infrastructure devices.

qualifications:

7+ years of experience in Cybersecurity, with a primary focus on OT, ICS, SCADA, or critical infrastructure environments (e.g., transit, utilities, energy).

Hands-on experience with OT network protocols (e.g., Modbus, DNP3, Ethernet/IP, PROFINET) and industrial network security configurations.

Proven background working in Agile delivery frameworks (SAFe Agile, Scrum, or Kanban).

Strong understanding of network architecture, firewalls, and industrial network segmentation strategies.

Relevant industry certifications are highly preferred (e.g., GICSP, GRID, CISSP, CISM).

Excellent communication skills with the ability to translate technical security requirements into actionable sprint user stories.

skills:

Agile,Cybersecurity,emerging cyber threats,Ethernet,firewalls,Modbus,network architecture,network protocols,network security,network segmentation,Operational Technology (OT),Industrial Control Systems,sprint planning,Scrum,vulnerability management,SCADA,Excellent communication skills,backlog grooming,CISM,CISSP,DNP3,Agile delivery,IEC 62443,NIST standards,infrastructure,Kanban,NIST,PROFINET,risk assessments,Security,safeguard,security controls,threat monitoring,user stories,workflows

Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.

At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact

Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility).

This posting is open for thirty (30) days.