Senior Network Engineer

Senior Network Engineer

Vesta Corporation Atlanta, Georgia, United States

About Vesta

Vestahelps wireless providers make more money byimprovinga part of theirbusinessmostdon’tthink about — payments. Vesta works with major names likeAT&T, Rogers, Telcel, and Vodafone, helping them stop fraud, reduce failed transactions, and make sure moretransactions are successful. ForMNOs,MVNOs and prepaid carriers, this can mean fewer lost customers and more revenue — all without adding friction to the checkout experience. With over 100 million transactions processed every year in 40+ countries, Vestahelpswireless providers turn their payment systems into a competitive advantage.

Note:
This is a 6-12 month Contract Position.

Vesta Corporation is seeking a Senior Network Engineer to lead the design, implementation, and ongoing operations of our global enterprise network. This is a senior individual-contributor role operating at the intersection of complex multi-site networking, hybrid cloud infrastructure, and PCI compliance. The ideal candidate brings 10+ years of hands-on enterprise networking experience, deep fluency with AWS network architecture and security services, strong familiarity with both commercial and open-source tooling, and the ability to drive infrastructure modernization initiatives with limited oversight.

• Design, implement, and maintain scalable, secure network infrastructure across data centers, remote sites, and AWS/Azure cloud environments.
• Architect and operate routing and switching infrastructure including BGP, NAT, VLANs, Spanning Tree, IPsec VPNs and HSRP.
• Manage and tune enterprise firewall platforms (Cisco, pf Sense, Check Point) in alignment with PCI DSS segmentation and access control requirements.
• Administer and optimize F5 BIG-IP LTM/GTM for application delivery, load balancing, and traffic steering across production environments.
• Manage Cloudflare DNS, WAF, and network security policies for internet-facing properties.
• Maintain network security policy management via Fire Mon; contribute to access path analysis and rule lifecycle management.
• Manage Proxmox-based virtualization as it relates to network-adjacent workloads and VM/LXC networking.
• Coordinate with vendors and carriers to manage WAN circuits, resolve outages, and drive cost optimization.

• Design, deploy, and maintain AWS Virtual Private Clouds (VPCs) including subnet design, CIDR allocation, route tables, internet gateways, and NAT gateways across multi-account and multi-region environments.
• Architect and manage VPC-to-VPC connectivity via VPC Peering, AWS Transit Gateway, and Private Link to support secure, scalable inter-service communication.
• Configure and maintain AWS Site-to-Site VPN and Direct Connect circuits for hybrid connectivity between on-premises data centers and AWS environments.
• Design and enforce AWS Security Group and Network ACL policies as network-layer access controls, aligned with PCI DSS segmentation requirements.
• Manage DNS architecture within AWS using Route 53 for private hosted zones, resolver endpoints, conditional forwarding, and DNS failover across hybrid environments.
• Configure and manage AWS NAT Gateways, Elastic IPs, and Elastic Load Balancers (ALB/NLB) for workload exposure and traffic routing.
• Maintain AWS network connectivity for partner data and compute workloads migrated into cloud environments, including GDPR and data sovereignty considerations.

• Implement and maintain AWS security controls at the network layer including Security Groups, NACLs, VPC Flow Logs, and WAF rulesets on Cloud Front and ALB.
• Enable and manage AWS Cloud Trail across accounts to ensure comprehensive API activity logging; integrate with centralized SIEM for alerting and audit evidence.
• Configure and maintain AWS Guard Duty for threat detection; triage findings and drive remediation in coordination with the security team.
• Manage AWS Security Hub to aggregate and prioritize findings from Guard Duty, Inspector, Macie, and third-party integrations; produce compliance posture reports…