Senior Abacus Network Architect / OT Network Architect

Job Description:
Advanced Network Architect is responsible for leading the design, strategy, and support of network infrastructure with a primary emphasis on Operational Technology (OT) systems—including core, distribution and edge devices modelling for all systems including CCTV, PA systems, CBTC, Bus Radio, power, cyber security, other train and bus operations system and applications. This role is OT focused architect, ensuring robust, secure, and compliant operational systems.

Key Responsibilities:

Lead the design, modeling, and long-term planning of OT network components, including core, distribution, and edge devices.
Architect and support highly available, resilient network infrastructure for 24x7 operational environments.
Support OT systems including CCTV, PA systems, CBTC, Bus Radio, power, cybersecurity, and transportation operational systems.
Provide technical leadership and guidance to operations teams on OT network projects.
Design solutions addressing OT cybersecurity, operational continuity, reliability, and regulatory compliance.
Collaborate with IT teams to integrate OT and IT environments while maintaining strict network segmentation and security controls.
Develop and maintain network standards, architecture patterns, reference models, and technical documentation.
Lead network modernization initiatives, including upgrades and replacement of legacy systems.
Evaluate innovative networking technologies and solutions with a focus on ROI, performance, scalability, and operational efficiency.
Capture and analyze maintenance and network performance information to support continuous improvement.
Lead and coordinate OT network solutions and present architecture strategies and recommendations to management.
Work collaboratively with Networking, Cybersecurity, Infrastructure, Operations, and Procurement teams.
Participate in strategic planning sessions, network strategy discussions, and solution design workshops.