Senior Application Engineer

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.

Are you ready to support and enhance enterprise applications that underpin national security and critical services? At Leonardo UK, our Senior Application Engineers play a key role in maintaining and improving business-critical platforms—ensuring they are secure, scalable, and aligned with operational needs. You’ll work collaboratively across engineering and service teams, contributing to technical delivery and continuous improvement.

The role may involve a blended hybrid working model, with a mixture of working from home and working on site at one of our Leonardo offices to ensure close collaboration with the wider team and with our customers.

• Support, configure, and enhance the Leonardo
  MCX suite of applications
  , ensuring reliable operation within mission‑critical communication environments.
• Deliver engineering tasks within defined work packages, ensuring alignment with user needs, operational communication requirements, security requirements, and service‑level objectives.
• Contribute to application architecture, configuration, integration, and lifecycle activities under the guidance of senior engineers.
• Collaborate with stakeholders across engineering, service management, and product 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.

• Solid experience in supporting, configuring, and enhancing
  enterprise or mission‑critical applications
  , ideally within telecoms, control rooms, or public‑safety communications environments.
• Ability to solve moderately complex application‑related issues and contribute to secure, scalable solutions in high‑availability operational settings.
• Understanding of application lifecycle management, integration patterns, and secure‑by‑design principles.
• Strong communication and collaboration skills across engineering, service management and product teams.
• A proactive mindset with a passion for continuous improvement and knowledge sharing.

• Mission‑Critical Application Experience
  :
  Hands‑on experience supporting or configuring operational telecoms systems
  , public‑safety applications, control room tools, or enterprise‑grade software.
• Application Lifecycle Knowledge
  :
  Understanding of deployment, maintenance, upgrades, and decommissioning phases.
• Integration & Identity Management
  :
  Familiarity with integration patterns and identity systems such as Open  and OAuth.
• Secure-by-Design Principles
  :
  Awareness of cyber security practices and secure configuration.
• Service Management Alignment
  :
  Understanding of ITIL or similar frameworks.
• Technical Problem Solving
  :
  Ability to resolve moderately complex issues and contribute to service improvement.
• Collaboration & Communication
  :
  Strong communication skills across engineering, service, and product teams.

• Experience with mission‑critical communication platforms, public‑safety dispatch systems, TETRA technologies, or telecoms signalling protocols.
• Experience supporting applications across on‑premise, hybrid, and cloud environments (e.g. AWS).
• Exposure to MCX / MCPTT, control‑room platforms, or emergency services communication systems.
• Familiarity with Jira Service Management or other ITSM tooling.
• Knowledge of enterprise IT services such as Active Directory, KMSPKI, and monitoring tools.
• Exposure to Dev Ops or CI/CD practices.
• Industry certifications (e.g. Atlassian, , ITIL, AWS, Azure).
• Awareness of 3
  
  GPP technical standards.
• Experience working in secure or defence‑related environments.