Network Engineer

iSAM is an innovative, financial technology firm specialising in quantitative trading, comprised of iSAM Funds and iSAM Securities.

iSAM Securities regulated by the FCA, SFC, and CIMA registered, is a leading algorithmic trading firm and trusted electronic market maker, providing liquidity, technology and prime services to institutional clients and trading venues globally. The firm offers full-service prime brokerage and execution via its cutting-edge proprietary technology, as well as market leading analytics, cleared through the group’s bank Prime Brokers.

iSAM Funds is an alternative asset manager specialising in systematic investing. Each strategy is unique, provides a specialist quantitative approach and is designed to deliver highly diversifying absolute returns for institutional portfolios.

Summary:
We are seeking a skilled Network Engineer with a strong background in Wi-Fi, switching, routing, firewall technologies, and network automation principles. The ideal candidate should possess in-depth knowledge of network protocols, network security, and automation frameworks to enhance network performance and reliability.

Responsibilities

• Design, implement, and maintain network infrastructure across datacentre, cloud, and office environments


• Design and implement firewall policies and VPN connectivity


• Install, configure, and cable network hardware in a datacenter


• Collaborate closely with infrastructure and development teams to ensure network solutions align with business requirements and engineering best practices


• Develop and implement network automation tools to improve operational efficiency and reduce manual intervention


• Provide BAU support for network infrastructure, participate in an on-call rotation


• Produce and maintain technical documentation

Required Skills & Experience

• Strong enterprise and datacentre networking experience with expertise equivalent to CCNP/CCIE level


• Excellent understanding of networking fundamentals, including the OSI model, TCP/IP, routing, switching, and network design principles


• Experience with BGP, MP-BGP, VRF, and route leaking


• Experience with Internet and private peering connectivity


• Experience with Multicast technologies (IGMP/PIM)


• Good understanding of firewall policies, IPSEC VPNs, SSL technologies, and network security best practices


• Experience implementing and supporting Network Access Control (NAC) platforms such as Cisco ISE, Arista AGNI, or similar 802.1x solutions


• Experience with Python scripting and network automation frameworks


• Operational level in Linux


• Hands-on experience with tools such as Ansible, Terraform, Jinja2, NetBox, Git, and GitLab CI/CD

Bonus Qualifications:

• Experience with overlay networks (EVPN / VXLAN)


• Experience with cloud networking technologies across AWS, Azure, or GCP


• Experience operating in low-latency, high-performance, or financial services environments


• Experience with observability and monitoring platforms including Prometheus, Alert Manager, and Grafana