Senior Network Engineer {DNS {Infoblox}

About the Role: Grade Level (for internal use): 10About the Role: Senior Network Engineer The Team: Global Network Services is seeking a Senior Network Engineer to join our dynamic, multi-disciplinary team. You will design, automate, and operate the DNS, edge delivery, and application delivery services that keep S&P Global’s platforms fast, secure, and available. We value continuous learning, excellence, and a proactive mindset. Responsibilities and Impact DDI, Edge Security, and Application Delivery Own the architecture and operation of enterprise DDI services, including Infoblox (DNS, DHCP, IPAM) and cloud DNS (AWS Route 53, Azure DNS/Private DNS, Google Cloud DNS), with hybrid DNS resolution across on-premises and multi-cloud environments. Integrate IPAM/DDI with the CMDB to keep IP, host, and network records accurate and in sync, using discovery data and API-driven reconciliation to detect and correct drift. Design and operate DNS security controls, including DNSSEC, DNS firewall (e.g., Infoblox BloxOne Threat Defense), protection against DNS attacks Design and manage CDN, WAF, bot management, and DDoS protection using Akamai and Cloudflare, including rule tuning, policy management, and traffic analysis. Design and operate load balancing and traffic management, including F5, cloud-native load balancers (AWS ELB/ALB, Azure Application Gateway, GCP Load Balancing), and global server load balancing. Automation and Infrastructure as Code Write, test, and maintain Terraform modules to provision DNS, edge, and load balancing services across AWS, Azure, and GCP, setting shared-module patterns. Build Python tooling and API integrations (e.g., Infoblox WAPI, Akamai ,Cloudflare APIs) to remove repetitive manual tasks and improve consistency. Build and improve CI/CD pipelines for changes, including automated validation, pre-deployment testing, and policy checks. Develop automated configuration and compliance checks to catch deviations from approved standards (e.g., DNS records, WAF policies, IPAM allocations) early. Follow good engineering practice in shared repositories: version control, peer review, modular code, and clear documentation. Collaboration and Continuous Improvement Serve as subject matter expert and third-line escalation point for complex incidents, leading root cause analysis. Collaborate with application, product, engineering, and security teams to deliver changes meeting enterprise standards and compliance requirements. Plan and execute approved changes within agreed maintenance windows, with documented back-out steps, and join out-of-hours change windows as required. Produce and maintain architecture documentation, automation runbooks, and standard operating procedures. Mentor engineers, share knowledge, and identify ways to reduce risk, improve efficiency, and raise standards. What We’re Looking For Basic Required Qualifications