> Markdown version of [/jobs/ext/2488478-senior-platform-engineer-cross-domain-gateway](https://www.wearedevelopers.com/jobs/ext/2488478-senior-platform-engineer-cross-domain-gateway). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Platform Engineer (Cross Domain Gateway) - **Company:** Leonardo UK - **Location:** Yeovil, UK (Remote available) - **Experience:** Expert - **Salary:** £44,171.0 - £61,950.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Amazon Web Services, Systems Engineering, Microsoft Azure, Bash Shell, Configuration Management, Computer Networks, Data Transmissions, Data Security, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), Hyper-V, Python (Programming Language), Windows PowerShell, Ansible, Runbook, Security Information and Event Management, TCP/IP, Virtualization Technology, Software Vulnerability Management, DevOps Tools - Open-source, Firewalls (Computer Science), Containerization, Kubernetes, Terraform, Docker, Vmware - **Published:** August 3, 2026 - **Apply:** https://uk.indeed.com/viewjob?jk=88e08ff941b28cf1 ## About the Role * 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. Core areas (must have): * Cross-domain solutions: operation, support and controlled configuration of data transfer between security domains (e.g. high-to-low, restricted-to-enterprise) * Windows and Linux operating systems * Virtualisation platforms (VMware, Hyper-V) * Secure data handling and policy enforcement (sanitisation, validation, filtering) * Implementation of controlled and auditable data transfer mechanisms * Networking concepts (TCP/IP, DNS, DHCP, firewalls) * Automation and scripting (PowerShell, Bash, Python, Ansible, Terraform) * Knowledge of cyber security controls and accreditation requirements * Experience across the systems engineering lifecycle * Design and assurance of secure data flows across trust boundaries * Delivery within highly controlled / secure environments (e.g. cross-domain, air-gapped, defence) * Incident, problem and change management * Monitoring, patching, vulnerability remediation and service continuity Desirable: * Experience with specific cross-domain or secure transfer products, such as Opswat or similar * Data diode or one-way transfer architectures * Integration with security tooling, such as SOC, SIEM or monitoring platforms * Performance and throughput optimisation for secure data transfer systems * Experience supporting service management processes, including incident, problem, change and configuration management * Experience with cloud platforms, such as AWS or Azure, and Infrastructure as Code * Hands-on use of DevSecOps tools, CI/CD pipelines or automation tooling * Containerisation platforms, such as Kubernetes or Docker ## Description * 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. ## Related Videos - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Remote Driving on Plant Grounds with State-of-the-Art Cloud Technologies](https://www.wearedevelopers.com/videos/251-remote-driving-on-plant-grounds-with-state-of-the-art-cloud-technologies) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)