Senior OT Cybersecurity Engineer

Randstad USA; Washington (District of Columbia); On-site; USD 76,000 - 83,000; Part time

Benefits offered by this job

medical

prescription

dental

vision

AD&D

life insurance offerings

short-term disability

401K plan (all benefits are based on-)

HReimbursement?

Job summary

Randstad is seeking a Senior OT Cybersecurity Engineer to support critical infrastructure modernization and fleet monitoring initiatives. The role emphasizes hands-on deployment, DMZ creation, and securing OT/SCADA networks compliant with TSA directives.

The position involves working on secure DMZs, firewall deployments, boundary controls, and collaboration with cross-functional teams to meet milestones for transit and fleet security across the Northeast Corridor, with occasional in-person PI

Qualifications

• 8+ years of experience in cybersecurity or network engineering focused on OT/SCADA/critical infrastructure.
• Hands-on experience designing network segmentation, firewalls, and DMZs in operational networks.
• Deep knowledge of OT network protocols and industrial networking standards.
• Strong familiarity with TSA Security Directives, NIST SP 800-82 and IEC 62443.
• Excellent technical communication and ability to work in a remote team.
• SAFe Agile or Scrum experience is a plus.

Responsibilities

• Execute hands-on network segmentation and secure DMZs for OT/SCADA/ICS environments.
• Deploy and configure security architecture, firewalls, and boundary controls across transit and fleet systems.
• Remediate vulnerabilities and ensure compliance with TSA Rail Directives, NIST SP 800-82, IEC 62443.
• Secure and integrate network connectivity for fleet monitoring across assets.
• Collaborate with cross-functional teams to meet security milestones on schedule.
• Attend quarterly PI planning sessions in the Northeast Corridor (Philadelphia/Baltimore).

Skills

OT cybersecurity

Network segmentation

Firewalls

DMZ architectures

SCADA

ICS

NIST SP 800-82

IEC 62443

TSA directives

Remote teamwork

SAFe/ Scrum

Education

Bachelor's degree

Tools

Palo Alto

Cisco

Job description

Job Summary

Randstad is seeking a Senior Operational Technology (OT) Cybersecurity Engineer to support a critical infrastructure modernization and fleet monitoring initiative for a premier transportation client. Reporting to the Director of Enterprise Network Critical Infrastructure Services, this role focuses on hands-on deployment, network segmentation, and hardening physical infrastructure in accordance with TSA Security Directives. The ideal candidate will bring strong network engineering expertise to build DMZs, isolate operational technology networks, and secure wayside and onboard transportation assets.

Location

Washington, Washington, D.C.

Job type

Contract

Salary

$55 - 60 per hour

Work Hours

9am to 5pm

Education

Bachelors

Responsibilities

• Execute hands-on network segmentation and establish secure DMZs to isolate Operational Technology (OT), SCADA, and Industrial Control System (ICS) environments from enterprise IT networks.
• Deploy and configure network security architecture, firewalls, and boundary controls across critical transit and fleet monitoring infrastructure.
• Remediate security vulnerabilities and implement controls to ensure full compliance with TSA Rail Security Directives, NIST SP 800-82, and IEC 62443 standards.
• Secure and integrate network connectivity for fleet monitoring systems across transit assets and wayside infrastructure.
• Collaborate with cross-functional network engineering and deployment teams to deliver critical infrastructure security milestones on schedule.
• Attend quarterly in-person Program Increment (PI) planning sessions in the Northeast Corridor (e.g., Philadelphia / Baltimore area).

Qualifications

• 8+ years of experience in Cybersecurity or Network Engineering, with a direct focus on OT, SCADA, or critical infrastructure environments (transit, utilities, energy, or heavy industry).
• Proven, hands-on experience designing and deploying network segmentation, firewalls (e.g., Palo Alto, Cisco), and DMZ architectures within operational networks.
• Deep knowledge of OT network protocols and industrial networking standards.
• Solid understanding of TSA Security Directives and NIST SP 800-82 / IEC 62443 compliance frameworks.
• Strong technical communication skills and the ability to work effectively in a remote team environment.
• Prior experience in SAFe Agile or Scrum frameworks is a plus, but not required.

Skills

Cisco,Enterprise Network,Cybersecurity,firewalls,monitoring systems,network connectivity,network protocols,network security,network segmentation,Operational Technology (OT),Industrial Control System,Scrum,SCADA,work effectively,architecture,industrial networking,heavy industry,IEC 62443,infrastructure,NIST,network engineering,Security,technical communication skills,security vulnerabilities

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.

Contact

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 [e-mail].

Benefits

• medical
• prescription
• dental
• vision
• AD&D
• life insurance offerings
• short-term disability
• 401K plan (all benefits are based on eligibility)

Posting length

This posting is open for thirty (30) days.