Overview
On Site
Full Time
Skills
High Availability
Network Design
Documentation
Mentorship
Siemens
Allen-Bradley
Wireless Communication
Routing
Collaboration
Computer Networking
Border Gateway Protocol
OSPF
EIGRP
Routing Protocols
Switches
Firewall
ASA
Cisco PIX
NextGen
F5
Network
SCADA
Communication
Modbus
Adobe AIR
Internet
Wireless Networking
Cisco Certifications
Enterprise Networks
Job Details
Job#: 2073551
Job Description:
Senior Network Engineer - Operational Technology (OT)
About the Role:
Key Responsibilities:
Technical Skills & Qualifications:
Operational Technology (OT): Experience working with industrial control systems, including SCADA and PLCs Knowledge of OT-specific devices and communication protocols (e.g., Modbus) Understanding of air-gapped or non-internet-connected wireless networks Certifications & Experience: Minimum of CCNA-level knowledge; CCNP-level experience strongly preferred (certification preferred but not required) Several years of hands-on experience in both enterprise networking and OT environments
**If interested and think you qualify, email your resume to Zoe at **
EEO Employer
Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at or .
Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.
Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide.
Job Description:
Senior Network Engineer - Operational Technology (OT)
- Location: San Antonio, TX
- Contract duration: 12+ months
- Project: OT Network Modernization Initiative
About the Role:
- We're looking for a Senior Network Engineer to lead the design and support of secure, scalable network infrastructure for a major initiative focused on modernizing Operational Technology (OT) environments.
- This role requires a strong foundation in enterprise networking, a solid understanding of OT systems, and the ability to ensure high availability and security of industrial networks.
Key Responsibilities:
- Lead network design and implementation, focusing on segmentation, documentation, and secure connectivity.
- Provide technical mentorship to junior engineers and serve as the escalation point for complex network issues.
- Support OT environments with technologies like SCADA systems, PLCs (e.g., Siemens, Allen-Bradley), and industrial protocols (e.g., Modbus).
- Ensure secure wireless communications that are isolated from the internet.
- Troubleshoot and maintain enterprise-level infrastructure, including routing, switching, and firewall rule analysis.
- Collaborate with cross-functional teams to standardize and document network configurations.
Technical Skills & Qualifications:
- Networking:
- Strong understanding of BGP, OSPF, and EIGRP, and other standard routing protocols
- Experience with basic route/switch work
- Familiarity with firewall rules and network segmentation
- Hands-on experience with Cisco ASA NextGen, F5 load balancers, and large-scale network environments
**If interested and think you qualify, email your resume to Zoe at **
EEO Employer
Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at or .
Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.
Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide.
Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.