Network Engineer jobs in United States
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Hallmark Global Solutions Ltd · 9 hours ago

Network Engineer

positionAtlanta, GA
timeContract
remoteOnsite
seniorityMid Level

Hallmark Global Solutions Ltd is seeking experienced Network Security Engineers to join a specialized OT Security team. This role focuses on enhancing cybersecurity across multiple Operational Technology sites by implementing robust security controls aligned with IEC 62443 and NIST standards.

Cloud ComputingIT InfrastructureIT ManagementManagement Consulting
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H1B Sponsor Likelynote
Hiring Manager
Naveen HGS
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Responsibilities

Travel to multiple OT sites across the U.S. to perform hands-on security implementations
Implement and configure Cisco Firepower appliances (transparent and routed modes) to achieve OT network segmentation and system isolation
Replace unmanaged OT switches identified during site walk-throughs with Meraki switches, and configure them for logical VLAN segmentation
Configure and troubleshoot OT traffic flows to ensure secure and efficient communication across segmented networks
Assist with rack-and-stack activities, supporting Client field services personnel during hardware deployment
In some cases, assist with the replacement of Access Points (APs) as part of site upgrades
Collaborate with site personnel and internal teams to ensure smooth deployment and minimal operational disruption
Document configurations, site findings, and implementation details in technical reports
Validate failover using SD-WAN and Cisco Firepower

Qualification

Cisco FirepowerMeraki switchesVeloCloud SD-WANIEC 62443NIST Cybersecurity FrameworkOT environments experienceTroubleshooting skillsWireless infrastructure experiencePhysical security controlsRelevant certificationsDocumentation skillsCommunication skillsIndependent workTeam collaboration

Required

Strong hands-on experience with Cisco Firepower appliances (transparent and routed modes)
Strong hands-on experience with Meraki switches for VLAN segmentation
Strong hands-on experience with VeloCloud SD-WAN integration
Familiarity with IEC 62443 and NIST Cybersecurity Framework for OT environments
Experience in OT environments such as manufacturing, utilities, or critical infrastructure
Ability to travel extensively across the U.S. (up to 90%)
Excellent troubleshooting, documentation, and communication skills
Ability to work independently and as part of a distributed team

Preferred

Relevant certifications: CISSP, GICSP, Cisco Security, or ISA/IEC 62443
Experience with wireless infrastructure and AP deployments
Familiarity with physical security controls in industrial environments

Company

Hallmark Global Solutions Ltd

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Hallmark Global Solutions is established in the year 2002, Hallmark Global Solutions has an exceptional track record of transcending the core operations of its clients and helping them meet their ever-evolving market needs.
dateFounded in 2002
location
Hauppauge, New York, USA
people-size501-1000 employees
web-link
https://www.hgtechinc.net

H1B Sponsorship

Hallmark Global Solutions Ltd has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (35)
2024 (35)
2023 (47)
2022 (51)
2021 (84)
2020 (100)

Funding

Current Stage
Late Stage
Company data provided by crunchbase