Senior Infrastructure Architect: OT/Enterprise Networking & Cloud

Tetra Tech Digital Systems

The Woodlands (TX)

On-site

USD 110,000 - 150,000

Full time

2 days ago

Be an early applicant

Application generator

An application made for this job — a tailored resume and cover letter that speak straight to the posting.

Get past ATS filters

Benefits offered by this job

401(k) and Roth 401(k)

Dental Insurance

Health Insurance

Life Insurance

Vision Insurance

Employee Stock Purchase Plan (ESPP)

Paid time off

Performance Bonus

Career Growth Opportunities and TRAIN

Job summary

Tetra Tech is seeking a Senior Infrastructure Specialist to design, implement, troubleshoot, and support enterprise and industrial infrastructure across client projects. You will lead architecture, design, and ongoing support of network environments, with a focus on OT and critical infrastructure.

The role requires independent work in a fast-paced consulting setting, cross-functional collaboration, and strong documentation.

Qualifications

Bachelor's degree in Engineering, Computer, Information Technology, or related field.
7+ years of technical experience or equivalent education/certifications.
Advanced knowledge of routing protocols including BGP, OSPF, HSRP, and VRRP.
Proficiency in switching technologies including VLANs, STP, RSTP, RPVST+, and VPC.
Strong understanding of IPsec, VPN, and secure remote access technologies.
Experience with LTE/cellular connectivity solutions.
Strong packet analysis and troubleshooting using captures, routing validation, and protocol diagnostics.
Strong technical documentation and diagramming skills, including Microsoft Visio.
Ability to manage and prioritize work across multiple active projects.
Effective communication skills for technical teams and clients.
Strong ownership, follow-through, and attention to detail.

Responsibilities

Lead the architecture, design, implementation, and ongoing support of infrastructure solutions across multiple concurrent client projects.
Design, deploy, and troubleshoot routed and switched network environments for enterprise, industrial, and critical infrastructure systems.
Perform advanced troubleshooting across routing, switching, firewall, wireless, LTE/cellular, cloud, remote access, and general infrastructure connectivity issues.
Support infrastructure modernization, upgrades, expansions, migrations, and cutovers with a focus on reliability, maintainability, and operational continuity.
Build and maintain standardized configurations, templates, and support processes to improve consistency across projects and client environments.
Collaborate with internal team members, project managers, cybersecurity personnel, field teams, and client stakeholders to deliver high-quality technical outcomes.
Support environments requiring resilient and secure communications, including high-availability designs, WAN connectivity, VPNs, and remote site connectivity.
Support LAN, WAN, and wireless infrastructure design, implementation, and troubleshooting.
Support Azure and/or AWS infrastructure and networking environments.
Develop network designs including IP addressing schemes, segmentation strategies, and resilient architecture patterns.
Develop and maintain technical documentation, including diagrams, implementation plans, cut sheets, and as-built documentation.