Senior Systems Engineer - Network - Loadbalancing

At Moody's, we unite the brightest minds to turn today’s risks into tomorrow’s opportunities. We do this by striving to create an inclusive environment where everyone feels welcome to be who they are-with the freedom to exchange ideas, think innovatively, and listen to each other and customers in meaningful ways. 

If you are excited about this opportunity but do not meet every single requirement, please apply! You still may be a great fit for this role or other open roles. We are seeking candidates who model our values: invest in every relationship, lead with curiosity, champion diverse perspectives, turn inputs into actions, and uphold trust through integrity. 

At Moody's, we unite the brightest minds to turn today’s risks into tomorrow’s opportunities. We do this by striving to create an inclusive environment where everyone feels welcome to be who they are -with the freedom to exchange ideas, think innovatively, and listen to each other and customers in meaningful ways.  

If you are excited about this opportunity but do not meet every single requirement, please apply! You still may be a great fit for this role or other open roles. We are seeking candidates who model our values: invest in every relationship, lead with curiosity, champion diverse perspectives, turn inputs into actions, and uphold trust through integrity.  

Skills and Competencies 

• 7+ years’ experience in global network support team   

• Strong knowledge on Load Balancing / Application Delivery (F5 LTM/GTM/Enterprise Manager) 

• Proficiency in writing and debugging F5 iRules. 

• Strong understanding of application traffic flows and troubleshooting techniques. 

• Proficiency in network troubleshooting tools (Wireshark, Azure Network Watcher, Log Analytics). 

• Knowledge of network security principles, SSL certificates, and encryption methodologies. 

• Familiarity with other load balancers, firewalls, and web proxies is a plus. 

• Familiarity with cloud-based load balancing solutions (AWS, Azure, GCP). 

• Knowledge on Python, Ansible, Stackstorm is a plus 

• Experience investigating complex issues and performing corrective actions, proven track record in leading major incident recovery. 

• Highly impactful problem-solving skills and attention to detail. 

• Experience working with ITSM systems such as ServiceNow. 

• Customer focused & solutions driven 

• Participate in rotational weekend shifts OR on-call and provide after-hours support. 

• Exceptional written and verbal communication skills. 

Education  

• Proven hands-on network engineering experience 

• F5 Certified BIG-IP Administrator (F5-CA) or higher certification is preferred 

• CCNP or higher (CCIE and/or CISSP highly valued) 

• Deep understanding of networking protocols (e.g., IPSEC, HSRP, BGP, OSPF, 802.11, QoS) 

• Solid understanding of the OSI or TCP/IP model 

• Hands-on experience with monitoring, network diagnostic and network analytics tools 

Responsibilities 

• Configure and maintain F5 Load Balancers: Implement and manage F5 load balancers (LTM, GTM, ASM, APM modules), develop and implement profiles, rules, and policies to meet business requirements, and ensure uptime and reliability. 

• Collaborate with network and engineering teams: Work together on load balancing infrastructure for cloud and data center environments. 

• Network architecture analysis and implementation: Understand and apply network architecture principles. 

• Daily administration of network load balancer environment: Oversee the daily operations and maintenance of the network load balancer environment. 

• Monitor and analyze performance: Continuously monitor load balancer performance, analyze logs and performance data, and implement health checks and failover strategies to ensure high availability of applications. 

• Troubleshoot and resolve issues: Address connectivity, traffic flow, and application performance issues involving F5 products. 

• Proficiency in Switching: Knowledge of LACP, vPC, STP, VLAN, ARP, IP, etc. 

• Network monitoring and alerting: Utilize tools like SolarWinds, Orion, Netflow, Grafana for monitoring and dashboarding. 

• Troubleshoot data packet capture and analysis: Experienced in TCP/IP packet capture and analysis. 

• Configure and install network devices and services: Set up routers, switches, firewalls, load balancers, VPN, QoS. 

• Perform network maintenance and upgrades: Apply service packs, patches, hot fixes, and security configurations. 

• Monitor system performance and reliability: Ensure system availability and reliability, monitor resource utilization, and plan capacity. 

• Provide Level-2/3 support: Offer advanced support and troubleshooting to resolve issues. 

• Configuration and change management: Work within established policies to ensure successful changes to the network infrastructure. 

• Security tools and policies: Select and implement security tools, policies, and procedures in collaboration with the security team. 

• Implement global risk controls: Apply security measures and best practices to manage risk. 

• On-call rotation and after-hours support: Participate in on-call rotation, weekend changes, and provide after-hours support. 

• Service recovery and mitigation: Lead service recovery from major incidents, identify root causes, and implement permanent solutions. 

• Documentation: Develop and maintain documentation for application configurations, processes, and procedures including SoPs. 

About the team 

The Technology Services Group (TSG) are seeking a highly skilled and motivated Juniper Network Support Engineer with a focus on BGP peering, routing/switching, MPLS, ISIS, and OSPF. As a key member of our global network support team, you will play a crucial role in maintaining and optimizing our network infrastructure to ensure seamless connectivity, high performance, and reliability. 

Moody’s is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected veteran status, sexual orientation, gender expression, gender identity or any other characteristic protected by law.

Candidates for Moody's Corporation may be asked to disclose securities holdings pursuant to Moody’s Policy for Securities Trading and the requirements of the position. Employment is contingent upon compliance with the Policy, including remediation of positions in those holdings as necessary.