Senior Network Engineer - High-Availability Payments Infra

Euronet; United States; On-site; USD 110,000 - 140,000; Full time

Benefits offered by this job

401(k) Plan with matching

Health Insurance

Employee Stock Purchase Plan

Life Insurance

Disability Insurance

Tuition Reimbursement

Paid Time Off

Paid Holidays

Casual Office Attire

Job summary

CoreCard seeks a Senior Network Engineer to support 24x7 payment processing in the Norcross (Atlanta) office. You will be the go-to expert for production networks, ensuring uptime targets of 99.999% and leading strategy, deployment, and optimization across critical systems.

The role focuses on troubleshooting LAN/WAN/VPN, security policy development, and project provisioning in a PCI environment, with on-call rotation and on-site collaboration as a core requirement.

Qualifications

• 5-10 years of network engineering experience, or a Bachelor's degree plus relevant experience.
• SonicWall and/or Fortinet firewall administration.
• Strong VPN design and configuration, both site-to-site and client-to-site.
• Cisco/Dell switch and router configuration, plus solid IP subnetting skills.
• Active Directory, Windows Server (2012+), DNS, DHCP, and GPO.
• VMware/ESXi administration (snapshots, storage, vSAN).
• PCI environment and audit experience, vulnerability scanning, and patching.
• Microsoft Defender, endpoint security, and O365 administration.

Responsibilities

• Troubleshoot complex LAN, WAN, and VPN connectivity issues.
• Maintain secure, high-availability payment processing and corporate infrastructure.
• Serve as subject matter expert and provisioning engineer on key projects.
• Analyze client networks and document physical and logical network diagrams.
• Build and improve network policies, procedures, and security standards.
• Provision and install hardware and software across end-user, corporate, and processing environments.
• Take part in on-call rotation and emergency response.

Skills

SonicWall

Fortinet

VPN Design

Cisco/Dell Switches

IP Subnetting

Active Directory

Windows Server

DNS/DHCP/GPO

VMware/ESXi

PCI/Vulnerability

Microsoft Defender/O365

Education

Bachelor's degree or equivalent

Tools

VMware/ESXi

Active Directory

GPO

Job description

CoreCard seeks a Senior Network Engineer to support 24x7 payment processing in the Norcross (Atlanta) office. You will be the go-to expert for production networks, ensuring uptime targets of 99.999% and leading strategy, deployment, and optimization across critical systems.

The role focuses on troubleshooting LAN/WAN/VPN, security policy development, and project provisioning in a PCI environment, with on-call rotation and on-site collaboration as a core requirement.