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Senior Machine Learning Engineer

Limbic
City of London
1 week ago
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Senior Machine Learning Engineer

Join Limbic to develop AI for accessible mental health therapy. Limbic is the largest deployment of generative AI in NHS talking therapies and holds UKCA Class IIa certification.

Responsibilities
  • Design, build and deploy end‑to‑end ML features, including LLM systems with safety guardrails and clinical models.
  • Architect production systems combining OpenAI, Anthropic or Google LLMs with in‑house self‑hosted models such as Llama.
  • Create evaluation methodologies using user testing, LLM evaluations and clinical trials.
  • Design continuous monitoring strategies for production deployments.
  • Mentor junior team members, reviewing code and guiding architecture.
  • Collaborate with application engineers to integrate ML with product teams (security, orchestration, data).
  • Help build and tune custom models.
Experience & Qualifications
  • 4+ years of industry ML experience.
  • Availability during standard European business hours (UTC to UTC+3).
  • Available to work from London (Spitafields) office 1 day per week preferred.
  • Productionising LLM features.
  • Expert Python skills.
  • Strong knowledge of backend Python frameworks (e.g., FastAPI).
  • Solid understanding of statistics for model evaluation and analytics.
  • Experience with databases (SQL or NoSQL).
  • Familiarity with cloud platforms (AWS, GCP, Azure) and containerization (Docker).
  • Proficiency with Git.
  • Interest in mental health care.
  • Bonus: Typescript/JavaScript.
Benefits
  • Central London office with flexible WFH.
  • 25 days PTO.
  • Pension scheme.
  • Enhanced parental leave.
  • Equity share options.
  • Support for work‑related books and materials.
  • Quarterly life days (4 paid days per year).
  • Access to mental health support.

Referrals increase your chances of interviewing at Limbic by 2x.


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