Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible and innovative solutions. Through our people and technology, we connect clients to superior liquidity and data solutions. The Group is home to a stable of premium brands. Collectively, TP ICAP is the largest interdealer broker in the world by revenue, the number one Energy & Commodities broker in the world, the world's leading provider of OTC data, and an award winning all-to-all trading platform. We work as one to achieve our vision of being the world's most trusted, innovative, liquidity and data solutions specialist. Role OverviewThe Senior Network Security Infrastructure Engineer is a key technical leader responsible for the design, implementation, and operation of secure, scalable, and highly resilient network security platforms across both cloud and on-premises environments. Working closely with Cyber Security, Cloud Engineering, Architecture, and Operations teams, you will help define and deliver the organisation's network security strategy, ensuring critical enterprise services are protected, reliable, and compliant. Role ResponsibilitiesLead the design, engineering, deployment, and optimisation of enterprise network security platforms across cloud and on-premises environments. Serve as the technical authority for network security infrastructure, providing guidance on solution design, architecture reviews, and engineering best practices. Design and implement Infrastructure as Code (IaC) solutions using Terraform and related technologies to support scalable, repeatable deployments. Develop and maintain automation capabilities using Python, Ansible, and similar tools to improve operational efficiency and platform reliability. Integrate infrastructure automation and security controls into CI/CD pipelines to enable secure and reliable software and infrastructure delivery. Troubleshoot and resolve complex network and security infrastructure issues across development, test, and production environments. Drive continuous improvement initiatives focused on performance, resilience, security, and cost optimisation. Collaborate with Architecture, Cyber Security, and Cloud teams to define and evolve the organisation's network security strategy and standards. Produce and maintain high-quality technical documentation, operational procedures, and design artefacts. Support governance, compliance, risk management, and audit requirements, ensuring adherence to organisational and regulatory standards. Proven experience designing and operating AWS network security and connectivity services, including: AWS Cloud WANAWS WAFAWS Firewall ManagerAWS Transit GatewayAWS Direct ConnectStrong expertise in Terraform and Infrastructure as Code (IaC) methodologies. Strong understanding of AWS networking services and architectures, including VPNs, DNS, load balancing, routing, and security controls. Deep understanding of networking protocols and technologies, including TCP/IP, BGP, OSPF, routing, switching, and network segmentation. A deep and demonstrable understanding of digital certificates along with modern cryptography. Proven experience implementing network security controls, security best practices, and cloud-native security solutions. Experience developing infrastructure and security automation using Python, Ansible, or equivalent technologies. DesiredDegree in Computer Science, Information Technology, Cyber Security, Engineering, or a related discipline, or equivalent industry experience. AWS certifications, such as AWS Certified Advanced Networking – Specialty or AWS Certified Security – Specialty. Experience with network observability, monitoring, and telemetry platforms. Experience implementing DevOps practices and CI/CD pipelines within infrastructure environments. Knowledge of Site Reliability Engineering (SRE) principles and operational excellence frameworks. Working knowledge of information security frameworks and compliance standards, including ISO/IEC 27001 and SOC 2, with an understanding of their application within enterprise environments. Experience working within financial services or other highly regulated environments. Familiarity with Zero Trust networking concepts and modern cloud security architectures. Role Band & LevelManager / 6 Not The Perfect Fit? Our dedicated Talent Acquisition team is here to assist you in recognising how your unique skills and abilities can be a valuable contribution. That's why we're building a culture where everyone plays a part in making people feel welcome, ready and willing to contribute. TP ICAP Accord - our Employee Network - is a central to this. As well as representing specific groups, TP ICAP Accord helps increase awareness, collaboration, shares best practice, and holds our firm to account for driving continuous cultural improvement. LocationUK - 135 Bishopsgate - LondonSummaryLocation: LondonType: Full time
Senior Network & Security Engineer Hybrid in London employer: Liquidnet
At TP ICAP, we pride ourselves on being a leading employer in the financial services sector, offering a dynamic work environment that fosters innovation and collaboration. Our commitment to employee growth is evident through comprehensive training programmes and opportunities for career advancement, all while promoting a culture of inclusivity and diversity. Located in London, our global presence allows employees to engage with a wide range of markets and clients, making every day at TP ICAP both meaningful and rewarding.
