Machine Learning Engineer | Defence Start-up

Company: Switch Tech Talent
Apply for the Machine Learning Engineer | Defence Start-up
Location: Newcastle upon Tyne
Job Description:

Machine Learning Engineer (Defence – hiring mid to senior levels | 2yrs+)

Newcastle (on-site)

Defence Tech Start-up

Machine Learning Engineer (Defence Tech)

A growing defence‑tech consultancy is seeking Machine Learning Engineers of various levels and disciplines to work on advanced AI solutions and/or design and implement machine learning systems, including LLM applications within secure environments.

You’ll genuinely be working alongside some of the best engineers/teams in the country, solving problems no one else has before.

They are deliberately setting a very high bar, hiring engineers from top universities who are among the strongest technically in their field. The work is very problem-solving focused, small teams tackling complex systems, often working on completely new challenges every few months.

People we’re hiring for and value

  • Enjoy working on challenging systems
  • Are friendly
  • Truly understand problem-solving principles
  • Are adaptable and articulate

Machine Learning Engineer Responsibilities may include

  • Applying machine learning fundamentals and statistical techniques
  • Working with LLMs and transformer architectures
  • Evaluating model performance and optimising inference
  • Developing solutions for constrained or secure environments
  • Supporting explainability, safety, and robustness of AI systems
  • Integrating AI/ML components into applications and workflows
  • Designing and implementing retrieval-augmented generation systems
  • Evaluating LLM performance and mitigating failure modes
  • Testing and debugging non-deterministic systems
  • Assessing when AI vs deterministic approaches are appropriate

Machine Learning Engineer Requirements (it would be useful if you have some of the following experience – not all is required)

  • Deep understanding of machine learning fundamentals
  • Strong mathematics and statistics knowledge
  • LLM principles and transformer architectures
  • LLM performance evaluation and inference optimisations
  • Developing modules for edge, constrained or air-gapped environments would be a plus
  • Explainable AI or AI safety/security would be a plus

Applied AI overlap

  • Integrating AI components into applications and workflows
  • LLM evaluation, failure modes, and mitigation strategies
  • Testing and debugging non-deterministic systems
  • Retrieval-Augmented Generation
  • Understanding of the risks and limitations of AI and where statistical models or deterministic logic would be more appropriate
  • Understanding of core AI/ML concepts such as LLM architectures, ML models, and statistical methods

Additional Criteria

  • STEM Degree from a leading university (2:1 or 1st class)
  • Eligibility for UK SC-level security clearance
  • Experience in defence or highly regulated environments is advantageous, but not required

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Posted: May 18th, 2026