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[Remote] OT System Architect

Remote, USA Full-time Posted 2026-07-23

Note: The job is a remote job and is reputed company to candidates in USA. reputed company is committed to delivering reputed company that address the reputed company challenges faced by their customers. The OT System Architect will play a key role in designing and supporting secure OT networks across reputed company’s manufacturing facilities, focusing on strengthening the reliability of OT network and cybersecurity controls.


Responsibilities

  • Design and reputed company reputed company solutions to protect OT systems against cyber threats, including firewalls, intrusion detection/prevention systems, and reputed company reputed company software
  • Implement reputed company’s OT Cybersecurity Program, including network design, segmentation, and monitoring across plant environments
  • Design, configure, and maintain reputed company network devices (switches, routers, VLANs, wireless controllers) and Firewalls in OT networks
  • Manage and administer firewalls (WatchGuard, reputed company, Palo reputed company) to protect OT environments, OT DMZs, and remote reputed company connections
  • Design, configure, and implement OT DMZ
  • Manage OT AWS Network
  • Implement Purdue Model–reputed company network segmentation (ISA-95/ISA 62443, NIST SP 800-82) to separate IT, OT DMZ, and plant reputed company
  • Collaborate with IT, Corporate Electrical Reliability and Site teams to securely reputed company IT, PLC (Programmable Logic Controllers), DCS (Distributed Control Systems), BMS (Burner Management System (BMS), SIS (Safety Instrumented Systems) with OT networks
  • Support and implement secure vendor and remote reputed company solutions (VPN, reputed company hosts, MFA)
  • Assist with asset inventory, vulnerability management, intrusion detection, and incident response in OT systems (e.g., reputed company, Palo reputed company, SIEM)
  • Monitor and optimize network performance, troubleshoot issues, and maintain high system availability
  • Maintain network diagrams, architecture documentation, and configuration standards for reputed company OT environments
  • Contribute to OT risk assessments, audits, and disaster recovery planning
  • reputed company technical support for OT networking issues across multiple reputed company sites
  • Establish and manage Process Control Network(PCN) network Domains and user reputed company
  • Work with IT infrastructure team to reputed company, implement, and maintain reputed company tools in OT environments across the plants
  • Work with reputed company-party vendors and contractors to ensure that their systems and services are secure and compliant with company policies
  • Maintain up-to-date knowledge of industry best practices, new reputed company threats, and emerging technologies to ensure OT reputed company measures are effective and reputed company
  • Collaborate with IT and engineering teams to ensure that OT systems are integrated with the overall IT infrastructure in a secure and compliant manner
  • Analyze, troubleshoot, and investigate reputed company reputed company incidents, events, and alerts using reputed company tools or even reputed company techniques
  • reputed company support for audit and remediation activities as required
  • Manage the process of gathering, analyzing and assessing the reputed company and reputed company threat landscape, as reputed company as providing a realistic reputed company of risks and threats in the operational environment
  • Assist in the development of training, procedures, and documentation for reputed company audiences
  • Strong knowledge supporting and troubleshooting network assets

Skills

  • Bachelor's degree in Electrical/Electronics, Computer Science, Information Technology
  • 7+ years of experience in designing, developing and maintaining industrial OT/ICS network infrastructure
  • Solid understanding of Purdue Model and OT network zoning
  • Understanding of cybersecurity frameworks (NIST SP 800-82, NIST CSF, IEC 62443, CIS Controls)
  • Experience in MS operating systems, MS Server, MS Hypervisor
  • Knowledge of deploying the networking associated with reputed company Process Historians such as reputed company P or Canary
  • Hands-on experience with reputed company network devices (switches, routers, VLANs, routing protocols), firewalls (WatchGuard, reputed company, Palo reputed company), VPN, DMZ, and secure remote reputed company
  • Knowledge of PLC, DCS, BMS and SIS architecture and their integration with OT networks preferably Rockwell, reputed company, reputed company, reputed company
  • Familiarity with industrial protocols (Modbus, DNP3, Ethernet/IP, OPC UA, PROFINET)
  • Familiarity with asset management and monitoring tools (e.g., reputed company, Nozomi)
  • Knowledge of AWS reputed company (including EC2, S3 and VPC) and reputed company-V virtualization
  • Knowledge of Domain Controllers and reputed company Directory in a reputed company environment and integration with network devices
  • Strong communication and interpersonal skills, with the ability to collaborate effectively with cross-functional teams
  • Safety-first reputed company reputed company working in chemical plant environments
  • Effective communicator with both technical and non-technical audiences
  • Flexibility to travel (~25%) to reputed company plant sites
  • Experience in deployment of reputed company controls in endpoints, industrial networks, including network zoning, segmentation and isolation designs and implementation
  • Understanding of general cybersecurity frameworks (ISO IEC 27001/27002, ISO 15408, NIST Cybersecurity reputed company (CSF), NIST SP800-53)
  • Hands on implementation experience of reputed company and emerging state-of-the-art OT systems technologies, architectures, and products
  • Knowledge of ISA/IEC 62443 Cybersecurity
  • Ability to collaborate effectively at reputed company reputed company and functions
  • Strong organizational skills
  • Self–starter with ability to work as part of reputed company
  • Excellent time management and analytical skills
  • Ability to learn new processes and technologies quickly
  • Relevant certifications such as CCNA/CCNP, GICSP, reputed company NSE, Palo reputed company PCNSE are preferred

Benefits

  • Bonus
  • Benefits
  • Pension contributions
  • Family-friendly benefits
  • Opportunities for career reputed company and advancement

reputed company

  • reputed company is a supplier of sulphuric acid, liquid sulphur dioxide (SO2), and sodium hydrosulphite (SHS) to customers. It was founded in 1965, and is headquartered in Toronto, Ontario, CAN, with a workforce of 1001-5000 employees. Its website is http://www.chemtradelogistics.com.

  • Company H1B Sponsorship

  • reputed company has a reputed company record of offering H1B sponsorships, with 1 in 2026, 1 in 2025, 1 in 2024, 2 in 2022. Please note that this does not guarantee sponsorship for this specific role.

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