Network Operations Engineer, AWS & Core Infrastructure

Who We Are Our client is a global quantitative hedge fund operating across major liquid asset classes worldwide. The firm combines technology, data, research, and trading expertise to drive investment decisions, with infrastructure teams playing a critical role in supporting global trading, market data, cloud networking, and connectivity platforms. The Network Operations function is responsible for ensuring the reliability, scalability, and observability of both cloud and on-premises network infrastructure across a complex global environment. We welcome applicants from across the globe. Relocation support will be provided for suitable candidates. We Are Hiring Across Two Tracks We are currently hiring for both: AWS Network Operations Engineer (AWS)Network Operations Engineer (Core Network Infrastructure)These roles focus on network operations, production support, troubleshooting, automation, observability, and reliability engineering across cloud and on-premises environments. Whether your background is primarily focused on AWS networking and cloud automation or network operations, low-latency infrastructure, and network reliability, we encourage you to apply. Candidates from buy-side firms, hedge funds, proprietary trading firms, exchanges, market infrastructure providers, or other performance-sensitive environments are highly valued. Key Responsibilities Monitor and support production network environmentsTroubleshoot connectivity, configuration, and performance-related issuesDeliver operational changes through automation and controlled deployment processesBuild and improve observability, monitoring, and alerting capabilitiesSupport network reliability, scalability, and operational excellenceContribute to automation tooling, CI/CD workflows, and operational processesPartner with engineering, infrastructure, security, and trading teamsMaintain operational documentation, runbooks, and support procedures Requirements Experience in network operations, cloud networking, infrastructure operations, or related rolesStrong understanding of networking fundamentals including:TCP/IPDNSIPv4Routing conceptsStrong troubleshooting and incident management capabilitiesExperience working within production or high-availability environmentsExperience with automation, scripting, or Infrastructure-as-Code toolsStrong communication skills and a collaborative mindsetComfortable operating in fast-paced environments with changing priorities Highly Relevant Experience AWS Network Operations Track AWS networking services including VPC, Transit Gateway, and Route53Infrastructure-as-Code using Terraform or similar toolsPython and/or Bash automationCI/CD deployment pipelinesAWS networking operations across multiple environments or regionsIPAM solutions such as AWS VPC IPAM or InfobloxLoad balancing technologies (ALB, NLB)CloudWatch, Grafana, or similar observability toolingCore Network Operations Track Monitoring and resolving incidents across:Low-latency LAN environmentsWAN networksData centre and HPC environmentsBGP, Multicast, MPLS, EVPN, VXLAN, or related technologiesNetwork automation, GitOps, Ansible, CI/CD, and orchestration toolingSplunk, Prometheus, Grafana, or similar observability platformsCisco CCNP-level networking knowledge through experience or certificationExperience supporting highly available global network infrastructure What We're Looking For Strong troubleshooting and analytical mindsetPassion for automation and operational improvementMethodical approach to incident response and root-cause analysisComfortable taking ownership of production environmentsTeam player who enjoys working across multiple engineering disciplines Why Join Us Support infrastructure critical to global trading operationsWork across both cloud networking and large-scale network operationsExposure to automation, observability, and reliability engineeringCollaborate with highly technical engineering teams in a performance-driven environmentStrong opportunities to develop expertise across networking, cloud, and platform operations Selby Jennings is a Trading Style of Phaidon International (License Number 16S8194)