Senior Application Engineer (SIEM)

Salary: £61,000 - 101,000 per year

Requirements:

• Solid experience supporting, configuring, and enhancing security tooling platforms such as 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.
• Experience in log and event management, including ingestion, parsing, and correlation of system and security logs.
• Experience integrating security tooling with platform, network, and identity services.
• Experience providing operational support and tuning of security tooling in live environments.
• Experience with application lifecycle management, including deployment, maintenance, upgrades, and decommissioning.
• Experience with integration patterns and identity management such as SSO, RBAC, and API integration.
• Experience working within security and ITIL-aligned environments.
• Experience delivering within secure, enterprise, or defence environments.
• Experience with SIEM, EDR, or vulnerability management tools such as Splunk, Trellix, or Tenable, or similar.
• Experience with SOAR platforms and automation of security response workflows.
• Experience integrating with monitoring, alerting, and incident response systems.
• Experience with threat detection, analytics, and use case development.
• Experience integrating with enterprise services such as Active Directory and identity platforms.
• Exposure to DevOps and CI-CD practices.
• Experience working in secure or regulated environments.
• Developed Vetting (DV) clearance required prior to starting.

Responsibilities:

• Support, configure, and enhance security tooling platforms 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.

Technologies:

• API
• Active Directory
• DevOps
• Support
• ITIL
• ITSM
• Network
• RBAC
• Security
• Splunk

More:

We are partnering directly with Leonardo to hire a Senior Application Engineer for our Cyber & Security Solutions Division team. We support and enhance enterprise applications that underpin national security and critical services, and this role focuses on delivering, maintaining, and improving platform and systems engineering solutions for defence, government, and public sector services. The role may involve a blended hybrid working model with a mixture of working from home and on site at one of our Leonardo offices, and the position is based at our UK site in Yeovil. We offer a comprehensive, company-funded benefits package that supports wellbeing, career development, and work-life balance, including generous leave with the opportunity to accrue up to 12 additional flexi-days each year, an award-winning pension scheme with up to 15% employer contribution, free access to mental health support and financial advice, access to 4,000 online courses via Coursera and LinkedIn Learning, flexible benefits worth up to £500 annually, and flexible hours with hybrid working options. We are a global leader in Aerospace, Defence, and Security, headquartered in Italy, employing over 53,000 people worldwide including 8,500 across 9 UK sites. We are committed to building an inclusive, accessible, and welcoming workplace where diverse perspectives drive innovation and better outcomes.

last updated 37 week of 2026