DAVID SESAY
Hyattsville,MD
Summary
Safety-focused Automatic Train Control (ATC) Technician with extensive experience in installing, troubleshooting, and maintaining ATC and signaling systems. Demonstrates expertise in diagnosing complex electrical issues, executing preventative maintenance, and ensuring strict adherence to regulatory standards to enhance system reliability and minimize downtime.
Overview
15
15
years of professional experience
Work History
Supervisor ATC
Washington Metropolitan Area Transit Authority
10.2011 - Current
- Inspect, test, and maintain Automatic Train Control (ATC) and wayside equipment, including switch machines, track circuits, and signals to ensure adequate system reliability.
- Diagnose and repair complex electro-mechanical failures on train control systems by interpreting electrical schematics, wiring diagrams, and engineering drawings.
- Troubleshot ATC system faults, identified root causes, and deployed corrective actions to minimize delays.
- Scheduled and executed preventative and corrective maintenance (PM/CM) actions ensuring compliance with Federal Railroad Administration (FRA) and transit authority regulations.
- Collaborated with train dispatchers and engineering teams to test system upgrades, restoring operational capacity after signal disruptions.
- Utilize Maximo platforms to document hardware replacements, time logs, and troubleshooting steps.
- Conducted routine inspections and diagnostic tests on interlocking and cab signaling equipment.
- Adhered strictly to safety protocols, including LOTO and roadway worker protection (RWP) procedures.
Education
Associate of Applied Science - Electronic and Computer Technology
DeVry University
Arlington, VASkills
- Train control systems: ATC
- ATC performance monitoring
- Train control systems: cab signaling
- Train control systems: wayside equipment
- Train control systems: track circuits
- Safety and compliance: FRA standards
- Safety and compliance: lockout/tagout (LOTO)
- Power electronics
- PLC troubleshooting
- Tools and software: PLCs
- Root-cause analysis
- Schematic interpretation
Timeline
Supervisor ATC
Washington Metropolitan Area Transit Authority
10.2011 - Current
Associate of Applied Science - Electronic and Computer Technology
DeVry University