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UK remote

Assistant Vice President, Cyber & Network Security Engineer

CLS-GroupLondon, England, United KingdomPosted 23 Oct 2026

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About this role

About CLS: CLS is the trusted party at the centre of the global FX ecosystem. Utilized by thousands of counterparties, CLS makes FX safer, smoother and more cost effective. Trillions of dollars’ worth of currency flows through our systems each day. Created by the market for the market, our unrivalled global settlement infrastructure reduces systemic risk and provides standardization for participants in many of the world’s most actively traded currencies.

We deliver huge efficiencies and savings for our clients: in fact, our approach to multilateral netting shrinks funding requirements by over 96% on average, so clients can put their capital and resources to better use. CLS products are designed to enable clients to manage risk most effectively across the full FX lifecycle – whether through more efficient processing tools or market intelligence derived from the largest single source of FX executed data available to the market.

Our ambition to make a positive difference starts with our people. Our values underpin everything that we do at CLS and define our working environment: Pivotal purpose Trusted guardian Targeted innovation Facilitate connections Delivering excellence Inclusive culture Job information: Functional title – Cyber & Network Security Engineer Department - CISO Corporate level – Assistant Vice President Report to – Cyber & Network Security Engineering Lead Location – London, onsite 2 days per week What you will be doing: The Assistant Vice President (AVP), Security Engineering is a junior technical engineering role responsible for assisting with the deployment, automation, and operational support of enterprise security platforms and controls.

Ideally the candidate will have some AWS cloud infrastructure security tooling integration, security automation experience. This role requires a hands-on engineer who can build and deploy AWS-based environments to evaluate, test, and operationalize new security technologies and engineer off the shelf security tools. They need to have an openness and desire to learn and get stuck in and help solve problems. They will be supported and mentored by senior engineers in the team.

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Key Responsibilities: Security Engineering & Tool Deployment Assist with configuring and maintaining enterprise security platforms and services. Be willing to assist and learn the following products with the mentoring of more senior security engineers (experience with any of the below is desirable but not essential) Splunk Enterprise / Splunk Cloud Forcepoint Web Security Forcepoint Email Security & DLP Zscaler DLP and Internet Access Microsoft Purview DLP Qualys VMDR Additional threat detection, monitoring, and data protection technologies.

Troubleshoot platform, infrastructure, and integration issues across security ecosystems. AWS Infrastructure Engineering Help build and manage AWS environments used for proof-of-concepts, product evaluation, security testing, and production deployments. Develop repeatable Infrastructure-as-Code (IaC) capabilities for rapid deployment of security tooling. Engineer secure cloud architectures incorporating: EC2 VPCs Security Groups IAM Route53 S3 Lambda CloudWatch GuardDuty AWS Organizations Support secure cloud adoption initiatives and platform modernization programs.

Security Automation & Development Develop automation solutions using Python to reduce operational overhead and improve security effectiveness. Create and maintain scripts, APIs, orchestration workflows, and automation frameworks for: Security tool deployment Configuration management Monitoring and alerting Compliance validation Asset discovery Data collection and reporting Integrate security tooling with enterprise workflows and operational platforms.

Security Monitoring & Detection Engineering Design and implement security monitoring use cases. On board new log sources. Develop Splunk searches, correlation rules, dashboards, and reporting capabilities. Improve threat detection coverage through security telemetry integration and log onboarding. Partner with Cyber Defense teams to improve detection engineering and incident response capabilities. Data Protection Engineering Deploy and manage enterprise Data Loss Prevention (DLP) solutions.

Configure and optimize: Forcepoint DLP Microsoft Purview DLP Zscaler DLP Work with data owners and security architects to implement controls protecting sensitive information. Technical Leadership Collaborate closely senior engineers and architects to deliver secure-by-design solutions. Support security technology roadmaps and strategic initiatives. Experience 2-3 years of experience in Security Engineering, Cloud Security Engineering, or Infrastructure Security.

Experience building and deploying AWS environments from the ground up. Hands-on experience onboarding, configuring, and operating enterprise security platforms. Strong experience automating security operations using Python. Experience supporting security technology evaluations, proof-of-concepts, and production rollouts. Technical Skills: Cloud & Infrastructure AWS (preferred) Infrastructure-as-Code concepts Linux and Windows administration Networking fundamentals (TCP/IP, DNS, HTTP/S, Routing, Proxies) Desirable Security Technologies (all not essential) Splunk Forcepoint Web Security Forcepoint DLP Forcepoint Email Security Zscaler DLP Microsoft Purview DLP SIEM, Endpoint Detection & Response (EDR), DLP, and Vulnerability Management technologies Ansible SCCM Development & Automation SPL Python REST APIs Automation frameworks Scripting and orchestration CI/CD concepts Desirable Qualifications AWS Solutions Architect, Security Specialty, or equivalent certification.

Splunk Power User, Admin, or Architect certification. CrowdStrike Certified Falcon Administrator. Experience with Terraform or CloudFormation. Key Competencies Troubleshooting and problem-solving skills. Strong engineering mindset with a passion for automation. Strong desire to learn new technologies. Success Measures Engineering and onboarding of security technologies. Increased automation and reduction in manual operational effort.

Improved security monitoring and detection capabilities. Effective implementation of DLP and data protection controls. Stable, scalable, and secure AWS-hosted security infrastructure. Successful delivery of security engineering initiatives aligned with business and security objectives. What we’re looking for: 2-3 years’ experience in security engineering / cyber engineering / engineering Engineering mindset: able to go deep on architecture, automation, telemetry, and operational resilience.

Data-driven and outcome-focused, with a bias toward measurable security improvements. Comfortable operating in fast-paced, evolving environments. Willingness to learn and tackle new challenges. Our commitment to employees: At CLS, we celebrate inclusion and consider this to be one of our strongest assets. We are committed to fostering an environment in which everyone feels comfortable to be who they are, and inclusion is valued.

All employees have access to our inclusive benefits, including: Holiday - UK/Asia: 25 holiday days and 3 ‘life days’ (in addition to bank holidays). US: 23 holiday days. 2 paid volunteer days so that you can actively support causes within your community that are important to you. Generous parental leave policies to ensure you can enjoy valuable time with your family. Parental transition coaching programmes and support services.

Wellbeing and mental health support resources to ensure you are looking after yourself, and able to support others. Employee Networks (including our Women’s Forum, Black Employee Network and Pride Network) in support of our organisational commitment to embrace and always be learning more about inclusivity.

Source listing: greenhouse_clsgroup

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