Senior Application Engineer (SIEM)

Responsibilities

• Leonardo UK is seeking a Senior Application Engineer to join the Cyber & Security Solutions Division team. This role is focused on delivering, maintaining, and improving platform and systems engineering solutions that underpin critical defence, government and public sector services.
• What you will do as a Senior Application Engineer
• Support, configure, and enhance security tooling platforms (e.g. SIEM, EDR) that underpin threat detection and response
• Deliver engineering tasks within defined work packages, ensuring alignment with user needs, security requirements, and service-level objectives.
• Contribute to application architecture, integration, and lifecycle activities under the guidance of senior engineers.
• Collaborate with stakeholders across engineering, service management, and business teams to resolve technical issues.
• Mentor junior engineers and specialists, supporting their development and promoting best practices.
• Participate in continuous improvement initiatives, including automation, documentation, and knowledge sharing.
• Ensure compliance with engineering governance, ITSM processes, and cyber security policies.

Requirements

• Solid experience in supporting, configuring, and enhancing security tooling platforms (e.g. SIEM, EDR, or similar)
• Ability to solve moderately complex application-related issues and contribute to secure, scalable solutions.
• Understanding of application lifecycle management, integration patterns, and secure-by-design principles.
• Strong communication and collaboration skills across engineering and business teams.
• A proactive mindset with a passion for continuous improvement and knowledge sharing.
• Core areas (must have):
• Support, configuration, and enhancement of security tooling platforms (SIEM, EDR, vulnerability management)
• Log and event management including ingestion, parsing, and correlation of system and security logs
• Integration of security tooling with platform, network, and identity services
• Operational support and tuning of security tooling in live environments
• Application lifecycle management (deployment, maintenance, upgrades, decommissioning)
• Integration patterns and identity management (e.g. SSO, RBAC, API integration)
• Secure-by-design principles and application security practices
• Technical problem solving and resolution of application-related issues
• Collaboration with engineering, SOC, and service management teams
• Experience working within security and ITIL-aligned environments
• Delivery within secure / enterprise / defence environments
• Desirable:
• Experience with SIEM / EDR / vulnerability management tools (e.g. Splunk, Trellix, Tenable, or similar)
• SOAR platforms and automation of security response workflows
• Integration with monitoring, alerting, and incident response systems
• Threat detection, analytics, and use case development
• Experience integrating with enterprise services (Active Directory, identity platforms)
• Exposure to DevOps / CI-CD practices
• Experience working in secure or regulated environments
• Security Clearance
• Location
• This role will be based at one of our UK sites - Yeovil.
• Why join us
• At Leonardo, our people are at the heart of everything we do. We offer a comprehensive, company-funded benefits package that supports your wellbeing, career development, and work-life balance.
• Time to Recharge: Generous leave with the opportunity to accr

Benefits

Additional Information

Job Description: Salary Range: £44,171 - £61,950 Leonardo UK operates a grade-based salary framework with broad bands. The salary range shown reflects the approved grade band for this role, or a narrower hiring range published within that band, and is benchmarked against the external market. Exceptions above the standard range are managed through governance controls to protect internal equity.

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