Associate Field Engineer in London

Location: London

Travel: Travel required several times per year (UK and international), sometimes at short notice and occasionally for up to 2 weeks.

Security: Must be eligible to obtain UK security clearance (e.g., SC / DV depending on project needs).

Hadean is an award-winning software company building software that enables real-time decision support, simulation, mission rehearsal and digital environments for the defence industry. Hadean is a deep-tech company building cutting-edge distributed computing technology that powers scalable, secure, and interoperable digital environments. Our platform enables real-time simulation and training, mission rehearsal, command & control and digital twin capabilities—transforming the way defence, government agencies and enterprises plan, train, and make decisions. Hadean's solutions have helped organisations including the UK MoD, US DoW, BAE, Leidos, and more, and we work with these customers at the forefront of defence innovation, collaborating with global partners to deliver next-generation capabilities that unlock operational advantage.

The Role: We are looking for an Associate Field Engineer to join our expanding UK team. This is an ideal opportunity for a recent graduate with 1-2 years of commercial experience, or someone transitioning from the Armed Forces who wants to build hands-on technical experience working directly with customers, supporting deployments, and showcasing cutting-edge simulation and distributed computing capabilities. You'll work alongside Field Engineers and Solutions Consultants across pre-sales and post-sales work—helping to build and deliver demonstrations, support customer deployments, run training exercises, and contribute to bids and technical documentation. Over time, you'll develop the skills and confidence to take on greater ownership of customer-facing technical delivery.

Key Responsibilities:

• Contribute to customer engagements across pre-sales and post-sales activities, helping ensure technical workstreams run smoothly.
• Support solution design work, helping translate requirements into usable, mission-relevant capabilities and documenting recommended approaches.
• Deliver product demonstrations, tailored to customer needs, including running and supporting hands-on demos in Hadean's lab environment and at customer/prospect meetings and events.
• Provide deployment support of a highly technical product set, including installation, configuration and troubleshooting in customer environments—both on-site and remotely.
• Execute proof-of-concept activities by setting up environments, running scenarios, collecting results and documenting outcomes.
• Produce and maintain technical documentation, including tender responses, RFIs/RFQs, statements of work, evaluation documentation, and supporting technical enquiries.
• Capture and communicate feedback from customer activity back into the business, supporting the improvement of product direction and field readiness.
• Participate in team planning and delivery activities—helping maintain high standards across demos, deployments, and customer support.

Skills Knowledge and Expertise:

We're looking for someone early in their career who is technically curious, hands-on, and comfortable working with customers.

• Essential:
• Degree (or equivalent experience) in a technical subject such as Computer Science, Software Engineering, Maths, Physics, or similar.
• Familiarity with programming fundamentals (e.g., writing scripts/tools, reading and understanding code, and using version control such as Git), gained through university work, projects, or equivalent experience.
• Strong working knowledge of the Linux command line and Bash scripting.
• Strong communication skills—able to explain technical concepts clearly to both technical and non-technical audiences.
• Confidence working in a fast-paced, collaborative environment.
• Problem-solving mindset and willingness to learn quickly when troubleshooting technical issues.
• Willingness to travel up to 50% to support customer deployments, demonstrations, and events.
• Interest in defence tech, simulation systems, or generative AI (academic or personal projects are great).

• Nice to have:
• Experience (professional, academic, or personal) with distributed and/or federated systems, simulation platforms, or high-performance computing concepts.
• Experience using C/C++ and/or JavaScript.
• Exposure to modelling & simulation in defence, training, or operational contexts.
• Background in (or strong interest in) defence, national security, or government customers.
• Ex-Forces applicants are welcome (especially where there is experience supporting training systems, mission rehearsal, or operational technology environments).

Security Requirements:

This role will require you to be eligible to obtain UK security clearance. Specific clearance level will depend on project and customer requirements.

Job Benefits:

We make Hadean an awesome place to work with competitive benefits:

• The option to work from home or from our fantastic office in Shoreditch, London.
• Private Health Insurance.
• Enhanced pension scheme.
• Flexible working.
• Enhanced parental leave.
• 3 extra days off at Christmas (on top of our standard 25).
• L&D budget.
• Quarterly business reviews with team dinners and events (including global virtual social events).
• Regularly scheduled socials.
• Share options.
• Quarterly awards with cash prizes.

A Place For Everyone:

We believe diversity drives innovation and for that reason we strongly encourage those from all backgrounds to apply for roles at Hadean. We are an equal opportunity employer and aim to build a workforce that is truly representative of the communities in which we operate and our clients. If you need reasonable adjustments at any point in the application or interview process, please speak with the People team who will be happy to support you. If you have a preferred pronoun, please feel free to highlight this during the process (e.g. she/her, he/him, they/them, etc.).