Network Engineer

Internal Level: Senior Associate Reporting to: Network Manager Job Overview Aquis Exchange is seeking a capable Network Engineer to support, shape, optimise, and scale our infrastructure. You’ll join a small, expert Network team working across a low-latency trading network, cloud environments and on-premises systems—contributing to both strategic projects and hands‑on engineering. We are looking for someone who brings strong network problem‑solving skills, will handle client on‑boarding and can work in a fast‑paced financial environment. The ideal candidate will also refine processes, and deliver reliable, high‑quality solutions that contribute to the continual improvement of the network and security infrastructure. Responsibilities and Duties Perform daily operational checks of the Network and Security infrastructure, identifying and investigating faults or anomalies Troubleshoot Network and Security infrastructure issues, using logs, monitoring tools, packet captures to identify the root cause Manage client onboarding, client access requests and decommissioning requirements Liaise with telecommunication and network service providers to troubleshoot leased lines, circuits and connectivity issues Support and implement planned network and security changes, including validation and post-change checks Monitor and propose capacity plans for the Network and Security infrastructure Monitor and support live exchange platforms during operational hours Create and maintain high-quality documentation of the Network and Security infrastructure Participate in incident investigation and root‑cause analysis, escalating issues where appropriate Support internal teams requirements when requested Contribute to the delivery of network and security projects, with the opportunity to take increasing responsibility for project‑based work as experience develops. Participate in a shift rota from 06:30 – 18:30.Occasional weekend and Bank Holiday work may be required Occasional West and East London Data Centre visits may be required Skills and Experience Essential 4 years or more in a Network and Security support engineering role ideally within a financial environment CCNP/ACE-P or equivalent networking experience Experience working with telecommunication providers and leased lines Strong understanding of TCP/IP, Spanning Tree, Routing, Firewalls Support and configuration experience of RSTP Proven hands‑on experience of OSPF, BGP Support and configuration of a firewall cluster and a centralised firewall manager.Experience with Fortinet would be advantageous. Strong Network Monitoring and troubleshooting experience with the following tools: Wireshark - packet capture and analysis TCPdump - packet capture and analysis Syslog analysis Solarwinds or equivalent network monitoring platforms Firewall logging traffic analysis Ability to investigate network issues methodically, correlate information from monitoring, logs and packet captures and identify probable root cause IPSEC Site‑to‑Site and Remote VPN configuration and troubleshooting experience Strong teamwork and collaboration skills Strong communication skills, with the ability to communicate technical issues in a clear, detailed and pragmatic manner. Experience working with network documentation, including network diagrams and operational procedures A willingness to learn new technologies Desired Understanding of PTP Knowledge and experience of Multicast, PIM and RPs Knowledge and experience of AWS networking Cloud environment Experience working with Arista EOS and/or Fortinet technologies would be advantageous Network Automation scripting knowledge such as Ansible and Python About Aquis Exchange Aquis Exchange (“Aquis”) is Europe’s challenger exchange, creating better markets for a modern economy. Aquis has market‑leading technology and innovative rules for trading, and offers primary listings and secondary trading of equities, along with global licensing of proprietary technology. Aquis consists of four divisions: Aquis Markets operates lit and dark order books, covering 16 European markets. For its lit books, Aquis uses a subscription pricing model which works by charging users according to the message traffic they generate, rather than a percentage of the value of each stock that they trade. Aquis Technologies is the software and technology division of Aquis. It focuses on building better markets via the creation and licensing of cutting‑edge, cost‑effective exchange infrastructure technology and services, including matching engine and trade surveillance solutions. Aquis Stock Exchange (“AQSE”) is a stock market providing primary and secondary markets for equity securities . It is authorised as a Recognised Investment Exchange, which allows it to operate a regulated listings venue. The AQSE Growth Market is divided into two segments ‘Access’ and ‘Apex'; the Access market focuses on earlier stage growth companies, while Apex is the intended market for larger, more established businesses. Aquis Data generates revenue from the sale of data derived from Aquis Markets and Aquis Stock Exchange to non‑Member market participants. Aquis is authorised and regulated by the UK Financial Conduct Authority and France's Autorité de contrôle prudentiel et de résolution and L’Autorité des marchés financiers to operate Multilateral Trading Facility businesses in the UK