CBTC Signal Engineer

WSP • Seattle, WA

5d • $115,000 - $200,500

About The Position

WSP is currently initiating a search for a CBTC Signal Engineer to join our Transit and Rail/Systems Engineering in our Seattle, WA Office.
The CBTC Signal Engineer provides specialized technical support and oversight of both CBTC and fixed-block signaling systems for the program. This position ensures that signal designs, interlocking logic, and mixed-mode block configurations are reviewed, validated, and approved in compliance with operational principles and safety standards.
The ideal candidate possesses a deep understanding of both traditional relay-based signaling and CBTC software-based interlocking logic, with hands-on experience supporting Sound Transit projects. This role serves as a vital liaison between the supplier, designer, and the agency to facilitate design acceptance, support test readiness, and ensure system safety and operational continuity throughout the migration to CBTC.

Requirements

• Bachelor’s degree in electrical, systems, or railway engineering; a minimum of 7 years of progressive experience in fixed-block and CBTC signaling system maintenance and/or design may be considered in lieu of a degree.
• Proven record of reviewing, approving, and coordinating block design packages for mixed-mode signaling operation.
• Experience developing or reviewing interlocking logic test procedures and software state machine implementations.
• Strong understanding of signal principles, operational practices, and legacy control systems.
• Prior involvement in at least one major CBTC deployment or migration project.
• Ability to work during off-hour testing or commissioning as needed.
• Ability to support field reviews, test witnessing, and agency coordination meetings.
• Flexibility to perform additional responsibilities as assigned to ensure program success.
• Full understanding of vital and non-vital signal logic, relay-based control circuits, and their translation into CBTC subsystem software.
• Working knowledge of interlocking design, block layouts, overlap logic, and control line functions.
• Understanding of test sequencing, verification, and validation of signaling systems within mixed-mode operation.
• Full understanding of vital and non-vital signal logic, relay-based control circuits, and their translation into CBTC subsystem software.
• Working knowledge of interlocking design, block layouts, overlap logic, and control line functions.
• Understanding of test sequencing, verification, and validation of signaling systems within mixed-mode operation.

Nice To Haves

• Exceptional analytical and diagnostic skills for reviewing detailed circuit and software logic.
• Effective communicator able to represent technical findings and recommendations to operations and design teams.

Responsibilities

• Provide technical review and approval of block design drawings and documentation for mixed-mode (CBTC and fixed-block) operation.
• Serve as the primary liaison between the CBTC supplier, designer, and agency operations for all matters related to signal design coordination and block approval.
• Review and assess interlocking logic implementation within both the relay-based fixed-block design and CBTC subsystem software, ensuring operational and safety compliance.
• Review and approve test procedures related to interlocking logic, signal aspects, and control sequences to confirm compliance with authority requirements.
• Evaluate software state machine logic used to implement interlocking functions in CBTC subsystems and ensure proper alignment with agency signaling principles and operational rules.
• Provide assurance that signal design changes maintain interoperability, safety integrity, and system maintainability during migration from fixed-block to CBTC control.
• Support interface alignment between CBTC zone controller logic, relay interlockings, and field signal equipment.
• Participate in design and field review meetings with Engineering, Operations Planning, and Maintenance teams to address design, testing, and configuration issues.
• Track and report on signal design deliverables, test progress, and open design comments requiring agency review or resolution.
• Perform additional responsibilities as required to support the successful integration, validation, and acceptance of the CBTC and fixed-block signaling systems.

Benefits

• WSP provides a comprehensive suite of benefits focused on providing health and financial stability throughout the employee’s career. These benefits include coverage related to medical, dental, vision, disability, and life; retirement savings; paid sick leave; paid vacation (or other personal time); paid parental leave; and paid time off for purposes of bereavement, voting, and/or attendance at naturalization proceedings.
• Employees are also afforded a comprehensive suite of benefits including medical, dental, vision, disability, life, and retirement savings focused on providing health and financial stability throughout the employee’s career.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level