QA Engineer in London

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. We work at the forefront of defence innovation, collaborating with global partners to deliver next‑generation capabilities that unlock operational advantage.

As a Quality Assurance Engineer at Hadean, you will play a pivotal role in ensuring the quality and reliability of our cutting‑edge dominAI platform. You will be the primary QA resource for the dominAI product team, responsible for embedding quality practices throughout the development lifecycle, from initial story refinement to final deployment. This role is perfect for a QA generalist who excels in the early stages of development, helping to define and clarify acceptance criteria and crafting comprehensive test plans. You will work in close collaboration with the QA engineer in our other product team. While you will each be responsible for the end‑to‑end quality for your respective teams, you will collaborate on cross‑team initiatives, review each other's work and provide mutual advice. While you will bring a strong focus on test planning and analysis, you will also need a solid foundation in test automation and infrastructure to contribute to our fast‑paced, automation‑first environment. Looking ahead, as our engineering team grows, there is a clear opportunity for this role to evolve into a leadership position, shaping the future of our QA team and practices. Applicants should be prepared to attend our office in Shoreditch once a week.

Key Responsibilities:

• Champion and implement QA best practices within the dominAI product team.
• Collaborate with product managers and developers during story refinement to define clear and testable acceptance criteria.
• Develop and execute comprehensive test plans and test cases.
• Design, develop, and maintain automated test suites for our distributed systems.
• Contribute to the testing of our machine learning and LLM‑based technologies.
• Work closely with the development team to identify, triage, and resolve defects.
• Manage and maintain testing environments and infrastructure, leveraging Kubernetes.
• Drive the continuous improvement of our QA processes and automation frameworks.
• Collaborate with other QA engineers to build a cohesive QA function.
• Contribute to release planning and risk assessment.

Skills required:

• A minimum of 5 years experience as a QA engineer/analyst.
• Proven experience in a QA role with a strong emphasis on test planning and requirements analysis.
• Solid experience in test automation for complex, distributed systems.
• Demonstrable knowledge of testing front‑end applications (React, TypeScript) and back‑end services (Node.js).
• Experience in setting up and managing test environments, particularly with containerization and orchestration (Kubernetes).
• Experience with QA for machine learning projects, including automated testing for LLM‑based technology.
• A deep understanding of the software development lifecycle and agile methodologies.
• Good understanding of the role of quality in an LLM assisted team.
• Must be able to obtain and maintain Security Vetted status to at least SC level.

Skills desired:

• Experience with performance‑critical systems.
• Previous experience in a leadership or mentoring role.
• Familiarity with CI/CD pipelines and DevOps practices.
• A passion for working with cutting‑edge AI and simulation technologies.
• Experience working in the defence sector.

Job Benefits:

• Hybrid working with 1 day per week in our fantastic office in Shoreditch, London.
• Private Health Insurance.
• Enhanced pension scheme.
• Enhanced parental leave.
• 3 extra days off at Christmas (on top of our standard 25).
• L&D budget.
• Regularly scheduled socials.
• Share options.

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.