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# Senior Security Engineer

- **Company:** F5 Networks, Inc.
- **Location:** UK
- **Experience:** Expert
- **Salary:** £37,157.0
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, Amazon Web Services, Software System Penetration Testing, Microsoft Azure, CentOS, Code Review, Cyber Security, Continuous Integration, Linux, Identity and Access Management, Intrusion Detection and Prevention, Python (Programming Language), Network Security, Network Architecture, Wireless Security, Network Protocols, Open Source Technology, Program Analysis, Reliability Engineering, Ansible, Ruby, Zero Trust Network Access, Rust (Programming Language), Circleci, Google Cloud, DevOps Tools - Open-source, Git, Kubernetes, Information Technology, Palo Alto Networks, Tenable Nessus, Hashicorp, Puppet, Terraform, Big Ip, Cisco, Qualys, Docker, Jenkins, Artifactory
- **Published:** October 24, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5940272879

## About the Role

* Experience working with high-availability enterprise production environments

 * Ability to script in multiples languages (Go, Rust, Python, Ruby, etc.) and experience building scripts for process improvements and automation

 * Baseline competency in administration of Microsoft Azure Cloud, Amazon Web Services (AWS), Google Cloud Platform (GCP) or equivalent public cloud infrastructure.

 * Technical knowledge and extensive hands-on experience with security and networking architecture, networking protocols, network security design, wireless security, intrusion prevention/detection, and firewall architecture.

 * Experience automating security testing and reporting outputs

 * Knowledge or familiarity with technological stack (Big-IP, Azure, AWS, GCP, CentOS, Linux, Kubernetes, Docker Hashicorp Vault, Palo Alto, Cisco, Qualys).

 * Experience assessing and implementing technical security controls

 * Exposure to DevOps tooling, CI/CD pipelines, container orchestration, and infrastructure as code approach (e.g. Puppet, Chef, Ansible, Terraform, Jenkins, CircleCI, Artifactory, Git)

 * Strong written and verbal communication skills.

 * Experience with network and application vulnerability and penetration testing tools

 * Willingness to innovate and learn new technologies

 * Excellent interpersonal and relationship skills with a collaborative mindset

 * Strong written and verbal communication skills.

 * Strong self-directed work habits, exhibiting initiative, drive, creativity, maturity, self-assurance and professionalism.

 * Agile, tactful, and proactive attitude that can manage prioritization and know when to escalate.

Qualifications

 * B.S. or M.S. in Computer Science, Engineering, or related field, or equivalent experience

 * 5 years of progressive responsibility in a security organization

 * 2-6 years of relevant security engineering or network security experience

## Description

* Identify organizational risks to confidentiality, integrity, and availability, and determine appropriate mitigations.

 * Leverage native Azure, GCP, and AWS cloud services to automate and improve existing security and control activities.

 * Develop or implement open-source/third-party tools to assist in detection, prevention and analysis of security threats

 * Perform technical security assessments against F5aaS product and enterprise cloud hosted, virtual, and on-premise systems including static and dynamic analysis, and threat modeling.

 * Review and test changes to services, applications, and networks for potential security impacts.

 * Manage penetration and segmentation testing of F5 applications and networks.

 * Review changes to and ongoing operations of enterpise environments and supporting systems for security and compliance impacts.

 * Assist in detection and response efforts as a product line subject matter expert.

 * Propose new controls to Security Architecture and GRC.

 * Build and implement new security controls, processes and tools.

 * Implement zero-trust and IAM security patterns with cloud agnostic tooling

 * Collaborate with Architecture, Site Reliability Engineering and Operations teams to develop and implement technical solutions and security standards.

 * Configure industry standard security testing/scanning tools (network scanning, code scanning, posture management).

 * Advise enterprise stakeholders on security best practices and secure design principles.

 * Implement, design, develop, administer, and manage enterprise security tooling.