Principal Systems Engineer

RTX (Raytheon); Warminster; Hybrid; GBP 70,000 - 110,000; Full time

Job summary

OMNIA Training in the United Kingdom is seeking a Principal Systems Engineer in Warminster to lead multidisciplinary systems engineering activities for the Army’s collective training programmes. You will define requirements, designs, and interfaces, and mentor junior engineers in a fast-moving, hybrid-work environment.

You will work under the Systems Solutions Lead, collaborating with suppliers and partners, ensuring adherence to lifecycle processes while delivering integrated training systems

Qualifications

• Experience in multidisciplinary system engineering environments.
• Experience writing system requirements and design documentation.
• Knowledge of System Engineering V-model lifecycles and processes.
• Experience drafting interface control documents (ICDs).
• Familiarity with technical standards and best practices.
• Experience with Atlassian Suite (Jira/Confluence) preferred.

Responsibilities

• Define work packages and technical requirements across multiple services to meet specifications.
• Lead definition of requirements and producing designs.
• Log, delegate and quality assure operational procedures.
• Act as technical liaison between engineering teams and supply chain partners.
• Maintain records and lead audits; contribute to key work packages.
• Lead activities related to systems engineering, product development and qualification.
• Assist review and delivery of advanced training environments and concepts.

Skills

Systems Engineering

Systems Engineering Process

Requirements Writing

V-Model Lifecycle

Interface Control Documents

Technical Standards

Atlassian Suite

Tools

ISO 15288

Job description

Principal Systems Engineer

Date Posted: 2026-10-02

Country: United Kingdom

Location: Warminster, Wiltshire

Position Role Type: Hybrid

Be at the forefront of transforming British Army training.

About us:

At OMNIA® Training, we've brought together some of the UK's most innovative defence training organisations under one powerful mission: to transform the British Army's training system and create the best-trained Army in the world. OMNIA are redefining the British Army's collective training. To do that, we are looking for the best and brightest minds from across the UK. We are backed by British innovation and powered by world-class experts, like you. OMNIA is at the heart of the UK's bold Land Industrial Strategy.

The role:

This is more than a job - it's a mission. You will be part of a high-impact, collaborative environment, where we expect everyone to live the values and standards of the British Army. Every person in our team plays a critical role in delivering OMNIA's vision; designing, delivering, and transforming collective training so the British Army is ready to fight and win.

You’ll work in a matrix organisation and report operationally through OMNIA Training and functionally through the Systems Solutions Lead. Ultimately, you’ll work for the British Army, championing innovation, and helping shape the future of military collective training.

Key Responsibilities:

• Working with a multidisciplined team to define work packages and technical requirements across multiple complex services and capabilities to meet required technical and operational specifications
• Lead definition of requirements and producing designs.
• Carries out agreed operational procedures of a routine nature, logging, delegating and quality assuring
• Act as the technical liaison between engineering teams and supply chain partners, ensuring technical specifications, standards, and integration requirements are clearly communicated and understood.
• Maintains relevant records and documentation, leads audits
• Individually contribute to the execution and delivery of key work packages
• Lead and undertaking activities associated with Systems Engineering, including product development and qualification
• Work with the OMNIA Training team to assist in the review, analysis, implementation and delivery of advanced training environments and concepts
• Contributes to maintenance, installation and problem resolution
• Contributes to and helps improve system operation
• Deputise for the Systems Solutions Lead
• Provide guidance and mentoring to more junior engineers.
• Be 'Responsible for championing and fostering a culture of Environmental, Health, and Safety (EHS) compliance and continuous improvement'.
• Any other duties required to meet the needs of the programme.

Who we are looking for:

We're after individuals who want to serve. You'll have a mission focus, and the enthusiasm and drive to 'get things done'. You'll want to work in collaboration with other defence training organisations, and the British Army. You won't let bureaucracy get in the way of what needs to be done, you'll learn lessons and share these lessons across the team. You won't necessarily have a military background, but you'll understand what it means to serve and to put the mission first. The OMNIA Principal Systems Engineer will be part of the team responsible for the delivery of complex bespoke training systems capabilities, technology and solutions for the Army Collective Training Service (ACTS). Responsible to the Systems Solutions Lead, this position will be critical to the successful technology and interoperability of the entire solution. The position is suited to a Training Technologist or Systems Engineer who has the appetite to develop further into Systems Engineering or Training Solution Systems and thrives on the challenge of tackling requirements definition, design, integration and delivery of a wide range of solutions across a broad spectrum of technologies, including simulation systems and synthetic environments. This will be done following the System Engineering process through the lifecycles through waterfall and agile methodologies. A key part of the role will be liaising across third parties and subcontractors to ensure their technical deliveries are aligned through the supply chain. This position requires a customer first mindset, strong stakeholder engagement skills, and the ability work in a multidisciplinary engineering team in a complex and evolving environment.

Essential Skills and Experience:

• Working in multi-disciplinary teams within a system engineering environment.
• Knowledge of Systems Engineering Process (ISO 15288)
• Experience of writing system requirements and producing design documentation.
• Knowledge in the System Engineering V-model lifecycles and processes.
• Writing technical specifications and Interface Control Documents (ICDs)
• Systems Engineering technical standards, principles, theories, concepts and techniques
• Experience with the Atlassian Suite, working wit