Senior Application Engineer (Mission Critical) in Bristol

Senior Application Engineer (Mission Critical) in Bristol

Bristol Full-Time 44171 - 61950 £ / year (est.) No working from home possible
Leonardo UK Ltd

At a Glance

  • Tasks: Support and enhance mission-critical applications for national security.
  • Company: Join Leonardo UK, a leader in defence technology with a collaborative culture.
  • Benefits: Generous leave, pension scheme, mental health support, and access to online courses.
  • Other info: Flexible working options and excellent career growth opportunities.
  • Why this job: Make a real impact on critical services while developing your skills in a dynamic environment.
  • Qualifications: Experience with mission-critical applications and strong problem-solving skills.

The predicted salary is between 44171 - 61950 £ per year.

  • Job
  • Description: Salary

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.

Overview

Your impact: 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, and will take a lead role in solving customer problems in an agile and team‑centric manner.

Responsibilities

  • 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.
  • Core Areas (Must Have)
  • 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 ID Connect 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.

Desirable

  • 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, KMS/PKI, and monitoring tools.
  • Exposure to Dev Ops or CI/CD practices.
  • Industry certifications such as Atlassian, ITIL, AWS or Azure.
  • Awareness of 3GPP technical standards.
  • Experience working in secure or defence‐related environments.
  • Security Clearance

This role is subject to pre‑employment screening in line with the UK Government’s Baseline Personnel Security Standard (BPSS).

An additional range of Personnel Security Controls referred to as National Security Vetting (NSV) may apply, which could include meeting the eligibility requirements for The Security Check (SC) or Developed Vetting (DV).

Location

The role can be based at our Bristol site, with hybrid/custom working options where appropriate. Travel will be involved in the role.

Benefits

  • Generous leave with the opportunity to accrue up to 12 additional flexi‑days each year.
  • £1000 pension scheme with up to 15% employer contribution.
  • Free access to mental health support, financial advice and employee‑led networks.
  • Free access to over 4000 online courses via Coursera and Linked In Learning.
  • Spend up to £500 annually on flexible benefits such as private healthcare, lifestyle discounts and gym memberships.
  • Flexible hours with hybrid working options.
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Leonardo UK Ltd

Contact Details:

Leonardo UK Ltd Recruitment Team

We think you need these skills to ace Senior Application Engineer (Mission Critical) in Bristol

Problem-Solving Skills
SQL
Communication Skills
Python
Automation
Data Engineering
Data Pipeline Development