Senior Systems Engineer (Training)

Prattwhitney; Warminster; Hybrid; GBP 55,000 - 75,000; Full time

Job summary

OMNIA Training, part of the RTX defence training alliance, seeks a Senior Training Systems Engineer in a hybrid UK role. You will define system requirements, develop designs, and work with cross-functional teams to deliver complex training capabilities for the British Army.

You will lead requirements, participate in system development, testing, and deployment, and ensure interoperability across live, virtual, and constructive environments.

Qualifications

• Experience in a systems engineering environment and writing system requirements.
• Knowledge of System Engineering V-model lifecycles and processes.
• Ability to translate operational requirements into practical architectures and designs.
• Experience with technical documentation and interface control documents (ICDs).

Responsibilities

• Define work packages and technical requirements across multiple services to meet specs.
• Produce designs and write system requirements for complex training solutions.
• Liaise with engineering teams and supply chain partners to communicate specifications.
• Contribute to production, validation, and deployment activities in agile or hybrid delivery.
• Support audits, documentation, and continuous improvement in EHS culture.

Skills

Systems engineering

Requirements writing

ISO 15288

Jira

Confluence

Security clearance

Multidisciplinary collaboration

Education

Engineering degree

Tools

Jira

Confluence

AWS

Azure

Job description

Date Posted: 2026-10-02 Country: United Kingdom Location: Warminster, Wiltshire Position Role Type: Hybrid

At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

Senior Training Systems Engineer 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.
• Defining 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.
• Undertake, leading where required 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.
• 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 Senior Training 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 with Jira, Confluence.
• Engineering background with a degree in a relevant discipline or equivalent professional experience.
• Ability to translate operational and technical requirements into practical system architectures, designs and implementation plans.
• Experience supporting technical deployments within structured delivery environments (e.g. Agile or SAFe).
• Experience supporting system testing, validation, and troubleshooting during deployment and operational phases.
• Experience of Cloud Service and hosting with AWS or Azure.
• Holds, or is eligible to obtain, UK Security Clearance (SC).

Desirable Skills and Experience:

• Experience of writing training system requirements and designs across the Live Virtual and Constructive environments.
• Engineering, (mechanical, electrical, software, systems).
• Awareness of TOGAF and/or NAFv4.
• Experience delivering multi-system integration projects within defence, government, or highly regulated environments.
• Working knowledge of Training Systems standards and frameworks (DIS/HLA/SISO).
• Experience implementing and configuring training solution technologies across Live, Virtual, and Constructive (LVC) environments.
• Experience working with external suppliers and vendors to deliver integrated technical solutions, including reviewing technical documentation to ensure alignment with system/architecture requirements and standards.
• Experience supporting procurement or supply chain teams by translating technical specifications and integration requirements.
• Understanding of interoperability standards or integration frameworks used within enterprise or defence systems.
• Experience or knowledge of Combined Arms Virtual Simulations (CAVS) or Tactical Engagement Systems (TES).

What we offer:

Be Part of a Ground breaking Mission Join the UK’s most advanced defence training alliance, where industry experts converge to push boundaries and deliver excellence.

A Culture Built on Collaboration Work in an inclusive, high-performing team that celebrates ideas, supports growth, and is laser-focused on delivering results.

Team dynamics

You will be part of a team that works together, across multiple organisations united in one mission.

Work Across Borders, United in Purpose

Operate across organisations with one shared goal - improving capability across all domains.

Drive Innovation

Your voice matters. We champion new ideas, welcome change, and believe in continuous improvement with a growth mind-set.

Shape the Future

Play a crucial role in a long-term, future-facing programme with real-world impact on national defence.

Career Growth & Benefits

Enjoy a strong benefits package, ongoing development opportunities, and clear pathways to progress within a trusted defence industry partner.

OMNIA® Training and its partners are proud to be an equal opportunity employer. We welcome applicants of all backgrounds and identities — what matters is your passion, your expertise, and your dedication to the mission.

Hybrid:

Employees who are working in Hybrid roles will work regularly both onsite and offsite. Ratio of time working onsite will be determined in partnership with your leader. Candidates will learn more about role type and current site status throughout the recruiting process. For onsite and hybrid roles, commuting to and from the assigned site is the employee’s personal responsibility. Requires advanced knowledge of work area typically obtained through advanced education combined with experience. May have practical knowledge of project management. Practical to substantial knowledge of RTX projects, programs or systems with the ability to make enhancements and leverage in daily work.

#LI-SH1 RTX adheres to the principles of equal employment. All qualified applications will be given careful consideration without regard to ethnicity, color, religion, gender, sexual orientation or identity, national origin, age, disability, protected veteran status or any other characteristic protected by law.

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.