We work across the full lifecycle of capability development to ensure that systems are safe, intuitive and operationally effective.
Our HFI expertise includes:

• User needs analysis & persona development

• Workload, usability, ergonomics & cognitive performance assessment

• Human–machine teaming optimisation

• Risk analysis and safety case integration

• Trials design, evaluation and user testing

• Integration with Defence HFI policies, standards and governance

Whether supporting programme assurance or shaping early concept development, we ensure that human considerations are not an afterthought—but a strategic advantage.

We deliver system-level design support grounded in real-world military understanding.
Our services include:

• Concept design and evaluation

• System architecture & integration support

• Interface and interaction design

• Requirements definition & traceability

• Operational analysis & mission task decomposition

• Design sprints, prototyping and iterative testing

We help organisations progress from concept to capability by ensuring systems are designed for the mission, for the environment, and for the human operator.

Decades of Defence Experience

Our team has significant experience across soldier modernisation programmes, dismounted close combat capability development, and digital integration across land forces. This includes:

• Soldier-borne technology integration

• Load carriage & ergonomics studies

• Cognitive and physical burden assessment

• Wearable technology design

• Human–data interaction and digital soldier concepts

• Trials, field experimentation and operational feedback loops

We understand the complexity of soldier systems—kit, sensors, software, data flows, physical load, cognitive demands—and the need to integrate these into a cohesive, survivable, and operationally effective capability.

What unites Definex consultants is a shared commitment to the human element of capability.

We recognise that technology, systems, and policy only succeed when they empower people.

That ethos drives how we design strategies, lead change, and guide clients — ensuring every solution we support enhances performance, cohesion, and mission effectiveness.

1. Human insight: A deep understanding of human capability, cognition, physiology and behaviour.

2. System design thinking: A structured, user-centred engineering approach that turns insight into solutions.

3. Defence domain mastery: Years of experience in UK and allied soldier integration programmes, trials, training and operational environments.

This combination allows us to help clients reduce risk, enhance performance, and deliver systems that genuinely work for the people who depend on them.