Note: The job is a remote job and is open to candidates in USA. Vesta is a company that helps wireless providers optimize their payment systems to reduce fraud and enhance transaction success. They are seeking a Senior Network Engineer to lead the design, implementation, and operations of their global enterprise network, focusing on multi-site networking and hybrid cloud infrastructure.
Responsibilities
- 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, pfSense, 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 FireMon; 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 PrivateLink 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 CloudFront and ALB
- Enable and manage AWS CloudTrail across accounts to ensure comprehensive API activity logging; integrate with centralized SIEM for alerting and audit evidence
- Configure and maintain AWS GuardDuty for threat detection; triage findings and drive remediation in coordination with the security team
- Manage AWS Security Hub to aggregate and prioritize findings from GuardDuty, Inspector, Macie, and third-party integrations; produce compliance posture reports for PCI DSS and SOC 1 Type 2 audits
- Administer AWS IAM policies, roles, and permission boundaries as they relate to network resource access; enforce least-privilege principles across VPC, Direct Connect, and Transit Gateway configurations
- Use AWS Config rules and AWS Organizations SCPs to enforce network security standards and detect drift across multi-account environments
- Monitor AWS network health using VPC Flow Logs, CloudWatch metrics and alarms, Transit Gateway Network Manager, and Reachability Analyzer
- Build and maintain CloudWatch dashboards and alarms for network throughput, latency, NAT gateway utilization, VPN tunnel status, and Direct Connect metrics
- Evaluate, deploy, and operationalize FOSS tools as replacements for commercial products where appropriate (e.g., Oxidized, NetBox)
- Contribute to Infrastructure as Code for network resources using automation; enforce configuration consistency across environments
- Maintain comprehensive documentation for network topology, configurations, and operational runbooks; support PCI DSS and SOC 1 Type 2 audit evidence collection
- Participate in on-call rotation and be available for after-hours work including unscheduled incidents
- Travel to domestic data center and office locations as needed to support deployments or incidents
Skills
- 10+ years of hands-on enterprise networking experience in large-scale, multi-site environments
- Expert-level Cisco routing and switching: IOS/NX-OS, BGP, OSPF, EIGRP, VLANs, STP, QoS
- Enterprise firewall administration: Cisco ASA/FTD, pfSense, and Check Point. Rule management, segmentation strategy, and change control
- F5 BIG-IP LTM/GTM: virtual servers, pools, iRules, traffic policies, and GTM topology records
- Cloudflare: DNS management, WAF rulesets, and security policy administration
- FireMon: policy analysis, rule review workflows, and access path validation
- Deep understanding of TCP/IP, DNS, DHCP, routing/switching protocols, and secure remote access
- Experience operating in PCI DSS compliant environments including control implementation and audit evidence collection
- VPC architecture: subnet design and CIDR planning, route tables, internet gateways, NAT gateways, and VPC endpoints
- VPC connectivity: VPC Peering, Transit Gateway, and AWS PrivateLink for inter-VPC and cross-account routing
- Hybrid connectivity: Site-to-Site VPN and Direct Connect configuration, BGP peering, and failover design
- Security controls: Security Groups, Network ACLs, and VPC Flow Logs for traffic visibility and PCI segmentation enforcement
- DNS: Route 53 private hosted zones, resolver endpoints, conditional forwarding rules, and health-check-based failover
- Load balancing and exposure: Application Load Balancer (ALB), Network Load Balancer (NLB), and Elastic IP management
- Monitoring and observability: CloudWatch metrics, alarms, dashboards; VPC Flow Logs analysis; Transit Gateway Network Manager
- Security and compliance services: CloudTrail, GuardDuty, Security Hub, AWS Config, IAM policy review, and ACM
- Multi-account governance: AWS Organizations, SCPs, and Control Tower network guardrails
- 10+ years of enterprise networking experience in complex, multi-site or global environments
- Demonstrated hands-on proficiency with AWS networking and security services in production environments
- Demonstrated ability to work independently and drive projects to completion without heavy oversight
- Strong vendor management skills, able to coordinate service delivery and incident resolution with carriers, ISPs, and hardware vendors
- Proven ability to document infrastructure for audits, incident response, and operational continuity
- Willingness and ability to travel domestically as needed (valid driver's license required)
- Available for on-call rotation and after-hours support windows
- Bachelor's degree in Information Technology, Computer Science, or a related field, or equivalent professional experience
- Cisco CCNP (or higher) Enterprise, Data Center, or Security track
- Proxmox VE: VM/LXC provisioning, cluster management, and software-defined networking
- Infrastructure as Code: Terraform or CloudFormation for network resource provisioning and drift detection
- Experience deploying FOSS tools to replace commercial networking or monitoring products (e.g., Oxidized, NetBox)
- Azure networking: Azure Firewall, NSGs, and Azure DNS private zones
- Zero-trust / overlay VPN concepts and implementation (e.g., Tailscale or Wireguard)
- AWS advanced networking: CloudFront distributions, WAF on ALB/CloudFront, PrivateLink endpoint services, Network Firewall
- Scripting or automation: Python, Bash, or Ansible for network task automation
- Vendor management: circuit provisioning, carrier escalations, and hardware lifecycle coordination
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