About this role
Salary: £61,000 - 101,000 per year
Requirements: Strong technical ability with experience operating and supporting secure platforms or gateway services in controlled environments.A disciplined service mindset, with the ability to balance hands-on technical support, assurance, documentation and continuous improvement.Confidence working across technical, security, service management and customer stakeholders to resolve issues and maintain service integrity.Experience with cross-domain solutions, including controlled configuration of data transfer between security domains.Experience with Windows and Linux operating systems.Experience with virtualisation platforms such as VMware and Hyper-V.Experience with secure data handling and policy enforcement, including sanitisation, validation and filtering.Experience implementing controlled and auditable data transfer mechanisms.Knowledge of networking concepts, including TCP/IP, DNS, DHCP and firewalls.Experience with automation and scripting tools such as PowerShell, Bash, Python, Ansible and Terraform.Knowledge of cyber security controls and accreditation requirements.Experience across the systems engineering lifecycle.Experience designing and assuring secure data flows across trust boundaries.Experience delivering within highly controlled or secure environments such as cross-domain, air-gapped or defence.Experience with incident, problem and change management.Experience with monitoring, patching, vulnerability remediation and service continuity.Desirable: experience with specific cross-domain or secure transfer products such as Opswat or similar.Desirable: experience with data diode or one-way transfer architectures.Desirable: integration experience with security tooling such as SOC, SIEM or monitoring platforms.Desirable: performance and throughput optimisation for secure data transfer systems.Desirable: experience supporting service management processes, including incident, problem, change and configuration management.Desirable: experience with cloud platforms such as AWS or Azure, and Infrastructure as Code.Desirable: hands-on use of DevSecOps tools, CI/CD pipelines or automation tooling.Desirable: experience with containerisation platforms such as Kubernetes or Docker.This role is subject to pre-employment screening in line with the UK Governments Baseline Personnel Security Standard (BPSS).An additional range of Personnel Security Controls referred to as National Security Vetting (NSV) will apply.This role requires Developed Vetting (DV) clearance prior to starting. Responsibilities: Operate, maintain and support secure cross-domain gateway services across highly controlled environments.Monitor service health, investigate issues and support incident, problem and change activity in line with agreed service processes.Maintain secure configurations, transfer policies, rule sets and supporting documentation.Support patching, upgrades, vulnerability remediation and service continuity activities.Troubleshoot gateway, platform, network and data transfer issues across security boundaries.Produce and maintain operational documentation, including build records, support guides, runbooks and configuration baselines.Work with security, service management, engineering and customer stakeholders to ensure cross-domain services remain compliant, available and fit for purpose.Identify and deliver continuous service improvements to improve reliability, security and operational efficiency. Technologies: AWSAnsibleAzureBashCI/CDCloudDevSecOpsDockerHyper-VSupportKubernetesLinuxNetworkPowerShellPythonSecurityTCP/IPTerraformVMwareWindowsDevOpsFlow More:
We are partnering with hackajob to hire a Senior Platform Engineer for our Cyber & Security Solutions Division. The role is based at our Yeovil site (Lysander Rd) on a permanent, onsite-hybrid basis, supporting secure cross-domain gateway services that underpin critical defence, government and public sector operations. We offer a company-funded benefits package including generous leave with up to 12 additional flexi-days, an award-winning pension scheme with up to 15% employer contribution, access to mental health support and financial advice, free learning through Coursera and LinkedIn Learning, flexible benefits worth up to £500 annually, and flexible hours with hybrid working options. We are Leonardo, a global leader in Aerospace, Defence, and Security with over 53,000 people worldwide and 8,500 across 9 UK sites. We are committed to an inclusive, accessible and welcoming workplace and encourage candidates to let us know if they need accessibility support during recruitment.
last updated 37 week of 2026