Jobs in the United States

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Added 11 mins ago
Engineer I-III (SCADA Engineer)
TXNM Energy
Albuquerque, NM
The position will be filled at the Engineer I, II, or III level based on the selected candidate¿s qualifications and experience. Assignments, independence, and technical responsibility will…
Added 11 mins ago
Engineer I-III (OMS Analyst)
TXNM Energy
Albuquerque, NM
The position will be filled at the Engineer I, II, or III level based on the selected candidate¿s qualifications and experience. Assignments, independence, and technical responsibility will…
Added 1 hour ago
FinOps Cloud Engineer | Active Secret clearance
GD Information Technology, Inc.
Remote, United States
Transform technology into opportunity as a FinOps Cloud Engineer at GDIT. Shape what’s next for mission-critical government projects while shaping what’s next for your engineering career.
Added 1 hour ago
Cybersecurity Information Security Assessor
GD Information Technology, Inc.
United States
Support responses to DISA/DoW data calls, audits, inspections, and technical reviews related to DEOS cybersecurity and system integrity.
Added 1 hour ago
Circuit Activation Engineer - TS/SCI clearance
GD Information Technology, Inc.
United States
We’re seeking a Circuit Activation Engineer to design, deploy, and support secure, high‑performance network solutions that keep our mission moving. If you enjoy solving complex technical…
Added 1 hour ago
Circuit Activation Engineer - TS/SCI clearance
GD Information Technology, Inc.
United States
We’re seeking a Circuit Activation Engineer to design, deploy, and support secure, high‑performance network solutions that keep our mission moving. If you enjoy solving complex technical…
Added 5 hours ago
Facility Operations Center (FOC) Engineer, Facility Operations Center
Amazon Data Services, Inc.
Herndon, VA
The Facility Operations Center (FOC) is a singular support team which proactively monitor the life-safety systems and the infrastructure equipment alarms (e.g., chillers, temperature…
Added 8 hours ago
DISTINGUISHED SCIENTIST/ENGINEER FOR USW ENTERPRISE SOS INTEGRATION
Naval Sea Systems Command
Naval Base Newport, RI
Added 9 hours ago
ME
Field Application Engineer II
Mitsubishi Electric US, Inc.
Dallas, TX
- $85,600 to $117,700 USD / year
Serve on a rotating basis as telephone support engineer per the Technical Call Center (TCC) schedule (approximately two weeks per year).
Added 10 hours ago
OT Network Engineer, Mission Systems
SpaceX
Memphis, TN
Design and maintain mission data center and site networks in accordance with company network standards. Collaborating with adjacent infrastructure and enterprise teams.
Added 10 hours ago
Engineer, Asset Operations
FirstEnergy
Akron, OH
…use within the engineering groups as well as the Asset Health Center application and supporting the transmission capital portfolio development as…
Added 10 hours ago
Engineer In Training II
Woolpert, Inc.
Dayton, OH
Added 11 hours ago
Robotics Technical Support Engineer II
Auris Health Inc. Legal Entity
Remote, United States
Johnson & Johnson MedTech is recruiting for a Robotic Technical Support Engineer II within the Robotic Technical Support organization, located in the Eastern Timezone. Remote work may be…
Added 11 hours ago
Sr. Network Engineer
CACI, INC.-FEDERAL
Remote, United States
CACI’s Enterprise IT (EIT) Sector is seeking a Sr Network Engineer in support of a Global Enterprise Network Modernization (GENMOD) contract.
Added 11 hours ago
Data Center Chief Engineer
Amazon Data Services, Inc.
Boardman, OR
The Data Center Chief Engineer (CE) is responsible for ensuring that all electrical, mechanical, and fire/life safety equipment within the data center is operating at peak efficiency. This…
Added 12 hours ago
HFN: Manufacturing Engineer II
Hanger, Inc.
Phoenix, AZ
The Manufacturing Engineer will develop and improve a wide range of manufacturing or system processes by understanding required outcomes and applying best practices. This entails working…
Added 12 hours ago
Sr. Network Engineer
CACI
Remote, United States
CACI’s Enterprise IT (EIT) Sector is seeking a Sr Network Engineer in support of a Global Enterprise Network Modernization (GENMOD) contract.
Added 12 hours ago
Cyber Operations Engineer (IR) - Global Industrial
USA MOT Motion Industries, Inc.
Birmingham, AL · Atlanta, GA
Under general supervision the Cyber Defense Engineer II will work across cloud security, Identity and Access Management (IAM), infrastructure protection, cyber recovery, Disaster Recovery…
Added 12 hours ago
Cyber Operations Engineer (IR) - Global Industrial
USA MOT Motion Industries, Inc.
Birmingham, AL · Atlanta, GA
Under general supervision the Cyber Defense Engineer II will work across cloud security, Identity and Access Management (IAM), infrastructure protection, cyber recovery, Disaster Recovery…
Added 13 hours ago
Senior PostgreSQL Database Engineer
Abile Group, Inc.
St. Louis, MO
Abile Group has an exciting and challenging opportunity for a Senior PostgreSQL Database Engineer on a 10 year contract providing User Facing and Data Center Services supporting an…
Added 14 hours ago
Program Specialist II
Texas A&M Engineering
College Station, TX
…the events management system and supporting departmental and center related events as necessary. Position will require attendance at weekend and evening…
Added 14 hours ago
Quality Engineer II (SSD519)
Mitsubishi Electric Power Products, Inc.
Warrendale, PA
Mitsubishi Electric Power Products, Inc. (MEPPI) is seeking a Quality Engineer II to plan, implement and maintain the quality assurance/control programs for the Substation Division (SSD)
Added 14 hours ago
SITEC - Network Engineer - MacDill AFB
Peraton
MacDill AFB, FL
Engineer and collaborate on enterprise/dev data, voice and video networks
Added 14 hours ago
Security Architect - TS/SCI
Xcelerate Solutions
Bethesda, MD
Xcelerate Solutions has an exciting opening for you as our next TS/SCI Security Engineer Architect working across several Task Orders under the DOMEX Technology Platform (DTP) contract…
Added 14 hours ago
Staff Security Engineer- Security and Compliance
Veeam Software
San Jose, CA
Veeam is the Data and AI Trust Company, specializing in helping organizations ensure their data and AI are fully understood, secured, and resilient to enable the acceleration of safe AI at…

Robert Half

Network Security Engineer

San Antonio, TX, United States

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Job details

Posting language: English
Posted: Sep 28, 2026

Original job description

Description We are looking for a Network Security Engineer to support and strengthen enterprise network operations in San Antonio, Texas. This role focuses on securing and optimizing both on-premises and Azure-based environments while helping maintain reliable connectivity across critical infrastructure. The ideal candidate brings deep hands-on experience with network security technologies, strong troubleshooting ability, and a practical approach to designing scalable, resilient solutions.

Responsibilities:

Manage and support network infrastructure across Cisco-based on-premises environments and Microsoft Azure networking services to ensure secure, stable performance.
Diagnose complex network and hardware problems, perform root cause analysis, and restore service for high-impact incidents affecting business operations.
Evaluate existing network architecture and recommend improvements that align with future capacity, security, and operational requirements.
Oversee intrusion monitoring activities, investigate suspicious network events, and coordinate timely response actions to reduce security risk.
Maintain current security signatures, protection features, and related configurations so defensive systems remain effective against emerging threats.
Design secure network solutions for local data center and Azure Government cloud deployments in accordance with project goals and architectural standards.
Track and report network performance indicators to support operational reviews, service visibility, and ongoing infrastructure planning.
Implement firewall policy updates, web filtering adjustments, and other network security changes in accordance with approved requirements.
Perform lifecycle maintenance activities, including hardware and software upgrades for Cisco switches, Check Point firewalls, and F5 load balancing platforms. Requirements • At least 10 years of overall IT experience, including 5 or more years focused on network design, deployment, and operational support.
Minimum 5 years of hands-on experience with Check Point security technologies, including firewall administration and intrusion prevention capabilities.
Minimum 5 years of practical experience with Cisco networking platforms such as Nexus, Catalyst, routers, ASA, and VPN technologies.
Strong knowledge of Azure networking services, including virtual networks, routing, subnets, ExpressRoute, and network security controls.
Solid understanding of core networking concepts such as TCP/IP, BGP, subnetting, routing, load balancing, and IPsec.
Experience working with F5 load balancers and related traffic management solutions in enterprise environments.
Scripting ability in PowerShell, Python, Bash, or similar languages is preferred.
Bachelor’s degree in Information Technology, Information Security, or a related field, or four additional years of equivalent network security engineering experience; CCNA required, Azure Network Engineer Associate preferred, and must be a U.S. citizen eligible to obtain and maintain Tier 3 / Level II IT Security Clearance. Technology Doesn't Change the World, People Do.®

Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https://www.roberthalf.com/us/en/mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more.

All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

© 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use (https://www.roberthalf.com/us/en/terms) and Privacy Notice (https://www.roberthalf.com/us/en/privacy) .

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