Senior Platform Engineer (Cross Domain Gateway)

Overview

As a Senior Platform Engineer at Leonardo UK, you will operate and improve secure gateway platforms that enable controlled information flow between security domains. You work in an agile, team-centric environment to solve complex security-focused problems and keep critical missions running. You will collaborate with security, service management, engineering and customers to ensure compliance, availability and resilience. This role offers hybrid working and a meaningful opportunity to shape cross-domain data transfer while advancing security and operational efficiency.

Pay / Benefits

• Generous leave with up to 12 flexi-days
• Pension scheme with up to 15% employer contribution
• Mental health support and financial advice
• Free access to 4,000+ online courses
• Private healthcare and lifestyle discounts
• Hybrid working options

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
• Maintain secure configurations, transfer policies, rule sets and 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 (build records, runbooks, configuration baselines)
• Collaborate with security, service management, engineering and customers to ensure services remain compliant and fit for purpose
• Identify and deliver continuous service improvements to enhance reliability, security and efficiency

Key requirements

• Strong technical ability operating and supporting secure platforms or gateway services in controlled environments
• Disciplined service mindset balancing hands-on support, assurance, and continuous improvement
• Ability to engage across technical, security, service management and customer stakeholders

• Cross-team collaboration
• Problem-solving under pressure
• Communication with diverse stakeholders
• Cross-domain data transfer operation and controlled configuration
• Windows and Linux operating systems
• Virtualisation platforms (VMware, Hyper-V)

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