OT Communications Architect/Lead Engineer

Apex Systems; San Antonio (TX); On-site; USD 96,000 - 117,000; Full time

Job summary

Everforth Apex Systems seeks an OT Communications Architect/Lead Engineer to drive design, reliability, and evolution of OT network services on onsite basis in San Antonio, TX. You will lead architecture, set standards, and guide implementation for uptime-critical environments.

Required: 7+ years in enterprise networks, strong BGP/OSPF, SD-WAN, and IaC tooling. You will oversee hands-on builds, runbooks, and cross-team collaboration to ensure security and resiliency.

Qualifications

• Extensive enterprise network design experience, with large-scale WAN and datacenter focus.
• Strong routing protocol knowledge (BGP/OSPF) and network fundamentals.
• Experience with network automation and scripting (Python, PowerShell).
• Hands-on OT/industrial networking exposure and security awareness.
• Familiarity with SD-WAN platforms and modern WAN architectures.
• IaC tooling experience (Ansible, Terraform) preferred.

Responsibilities

• Develop HLDs and LLDs for enterprise and OT networks.
• Design large-scale WAN, datacenter, cloud, and hybrid topologies.
• Lead routing, failover, and resiliency strategies for uptime and safety.
• Deploy and configure routers, switches, firewalls, load balancers, and related services.
• Lead hands-on builds, upgrades, and remediation of network Infrastructure.
• Monitor performance, latency, and throughput in OT and enterprise environments.
• Implement segmentation, VPNs, and secure access aligned to OT security.
• Develop runbooks, SOPs, and documentation for network services.

Skills

Enterprise network design

WAN/LAN routing

BGP

OSPF

Python

PowerShell

SD-WAN

IaC

Automation

OT/Industrial networking

Cybersecurity basics

Tools

Ansible

Terraform

Job description

# OT Communications Architect/Lead EngineerApply**Job#: 3055369****Job Description:**OT Communications Architect/Lead Engineer**Location:** San Antonio, Texas (Onsite)Role OverviewThis position supports the OT Infrastructure and Operations teams with responsibility for the design, reliability, and evolution of OT network services. This role requires expertise in large-scale network architecture, focusing on availability, security, and operational stability. The individual will serve as the senior technical lead and subject matter expert for the OT Communications domain, setting design standards and leading solution development. The role requires both strategic design and hands-on execution in an environment where uptime and safety are critical.Key Responsibilities* Develop High-Level Designs (HLD) and Low-Level Designs (LLD) for enterprise and OT network environments.* Design large-scale network topologies across WAN, datacenter, cloud, and hybrid environments.* Lead design of advanced routing, failover, and resiliency strategies aligned to uptime and safety requirements.* Deploy and configure routers, switches, firewalls, load balancers, and related network services.* Lead hands-on execution of enterprise and OT network builds, upgrades, and remediation efforts.* Monitor network performance, latency, and throughput across critical OT and enterprise environments.* Implement network segmentation, VPNs, and secure access architectures aligned to OT cybersecurity requirements.* Develop and maintain runbooks, SOPs, and support documentation for network services.Required Qualifications**Experience:** 7+ years of enterprise network engineering experience, including design, implementation, and support of large-scale environments. Strong experience designing enterprise WAN and datacenter networks, including highly available and resilient architectures.**Technical Skills:** Deep expertise in core networking fundamentals, including TCP/IP, OSI model, and routing protocols (BGP, OSPF). Experience with network automation, including scripting (Python, PowerShell, or similar) and exposure to automation frameworks. Experience with SD-WAN or modern WAN architectures.**Abilities:** Proven ability to design, build, and support large-scale, production-critical network environments. Advanced troubleshooting and root cause analysis skills, including the ability to diagnose complex, multi-domain issues. Ability to translate high-level designs into implementable solutions and guide others in execution.Preferred Qualifications* CCNP (minimum), CCIE strongly preferred.* Experience with SD-WAN platforms and modern WAN architectures.* Familiarity with Infrastructure-as-Code (IaC) tools and practices (e.g., Ansible, Terraform).* Exposure to cellular and wireless networking technologies, including LTE/5G and eSIM-based connectivity.* Understanding of cloud networking concepts (Azure or similar), including hybrid connectivity patterns.* Exposure to OT or industrial networking environments (SCADA, control systems, etc.).Compensation & BenefitsA comprehensive benefits package is available to eligible employees. *Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth 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 ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.**Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy**Everforth Apex Benefits Overview: Everforth 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. Everforth 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, Everforth 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. Everforth 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 Everforth Apex team member can provide.**Everforth 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. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.**If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [e-mail] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.**UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.***Employee Type:** Contract**Location:** San Antonio, TX, US**Job Type:****Date Posted:** October 12, 2026**Pay Range:** $70 - $85 per hour