Senior Network Systems Engineer – Train Control & SCADA Operations

Global Business Ser. 4u; Philadelphia (Philadelphia County); On-site; USD 110,000 - 170,000; Full time

Job summary

Global Business Ser. 4u in Philadelphia, PA is seeking a senior systems engineer to lead and maintain Train Control and SCADA infrastructure onsite.

The role emphasizes 24/7 availability, high-availability servers, and security, with heavy collaboration across internal and external technical teams. You will administer RedHat Enterprise Linux and Windows Server environments, configure network devices, implement security policies, document procedures, and participate in on-call rotations to

Qualifications

• 7+ years supporting SCADA or real-time control systems.
• 7+ years RedHat and Windows system administration.
• Experience configuring routers, switches, and firewalls.
• Strong network security knowledge and practices.
• Lifecycle management of hardware and software projects.

Responsibilities

• Lead efforts to maintain and enhance Train Control and SCADA infrastructure.
• Ensure 24/7 availability of four Train Control System facilities and networks.
• Administer RedHat and Windows-based systems for high availability and security.
• Manage routers, switches, and firewalls for fault-tolerant networks.
• Plan and execute upgrades for servers, workstations, and network gear.
• Develop and monitor network security policies and practices.
• Interface with internal/external specialists to resolve issues and plan improvements.
• Create and maintain system docs and network diagrams.
• Support emergency technical response and on-call rotations.
• Help develop procedures to improve operations readiness and response.

Skills

SCADA systems

Real-time control

Network security

Technical documentation

On-call support

24/7 operations

Troubleshooting

Team collaboration

Education

Bachelor's degree in CS/Engineering

Equivalent experience

Master's degree in CS

Tools

RedHat Enterprise Linux

Windows Server

Routers and switches

Firewalls

Cisco CCNA/CCNP

Job description

Philadelphia, PA || Onsite

Job Description

Key Responsibilities

• Lead technical efforts to maintain and enhance Train Control and SCADA system infrastructure.
• Ensure 24/7 availability of four critical Train Control System facilities and their supporting network infrastructure.
• Administer and configure RedHat and Windows-based systems for high availability and security.
• Manage, maintain, and troubleshoot routers, switches, and firewalls in support of a fault-tolerant communications network.
• Plan and execute software and hardware upgrades for servers, workstations, and network equipment.
• Develop, implement, and monitor network security policies and practices.
• Interface with internal and external technical specialists to resolve system issues and plan enhancements.
• Create and maintain system documentation, network diagrams, and troubleshooting procedures.
• Support emergency technical response and rotating on-call responsibilities.
• Assist with developing procedures and documentation to improve operational readiness and response.

Qualifications

• Minimum 7 years of experience supporting SCADA or real-time control systems
• Minimum 7 years of experience with RedHat and Windows systems administration
• Experience configuring and maintaining routers, switches, and firewalls
• Strong understanding of network security practices and protocols
• Proven experience in full lifecycle management of hardware/software projects
• Expertise in RedHat Enterprise Linux and Windows Server platforms
• Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience)
• Industry certifications such as CompTIA Network+, Security+, or equivalent
• Cisco certifications such as CCNA or CCNP (preferred)
• Experience with high-availability, fault-tolerant network design
• Strong technical documentation and troubleshooting skills
• Experience working in 24/7 operational environments with on-call responsibilities
• Familiarity with railroad operations, signaling, or transportation systems (preferred)
• Master’s degree in Computer Science or related field (preferred)