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Machine Learning Engineer - LLMs & Agentic AI (Lead I - Data Science)

UST
City of London
5 days ago
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Overview

Role description


Machine Learning Engineer - LLMs & Agentic AI


London (Hybrid - 3 days onsite). Full-time, Permanent. Join by December 2025.


We are seeking a skilled and forward-thinking Machine Learning Engineer to join our Applied AI and R&D team in London. You'll play a key role in building the next generation of agentic AI systems that enhance Oversight's enterprise spend management and risk control solutions.


This hands-on role combines deep machine learning expertise with cutting-edge work on Large Language Models (LLMs), Small Language Models (SLMs), retrieval-augmented generation (RAG), and multi-agent frameworks. You'll collaborate with data engineers, AI researchers, and product teams to design and deploy scalable, explainable, and autonomous AI solutions.


Responsibilities

  • Design, fine-tune, and deploy ML/LLM models for production.
  • Build and optimize RAG pipelines using vector databases and embeddings.
  • Develop multi-agent workflows leveraging LangChain, LangGraph, or MCP.
  • Implement prompt engineering, safety, and explainability modules in agentic systems.
  • Collaborate with data teams on real-time pipelines, model monitoring, and drift detection.
  • Experiment with AI/GenAI frameworks and translate research prototypes into production-ready solutions.
  • Contribute to best practices in ML engineering, mentoring, and technical documentation.

Qualifications

  • Bachelor's or Master's in Computer Science, Machine Learning, or related field.
  • Minimum of 3+ years experience building and deploying ML systems.
  • Proficiency in Python, PyTorch, TensorFlow, Hugging Face Transformers.
  • Experience with LLMs/SLMs (e.g., GPT-4, Claude, Gemini, LLaMA).
  • Strong skills in RAG, vector databases, and data engineering (SQL, Spark, Ray).
  • Familiarity with cloud ML platforms (AWS, Azure, or Databricks ML).
  • Understanding of MLOps, CI/CD, and infrastructure-as-code.

Nice to Have

  • Experience with agentic frameworks
  • AI safety/guardrails
  • Anomaly detection / open-source AI contributions


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