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RELX

Global information analytics and decision tools

Senior MLOps Engineer

Applied Machine LearningConfirmed live in the last 24 hours
Full-timeLondon, UKNo salary listedIn-person

About the Job

Requirements

  • Extensive experience in machine learning engineering, MLOps platforms, and shipping machine learning, search, or generative AI systems to production.
  • Strong engineering skills in Python, Java, and/or Scala.
  • Experience with statistical analysis, machine learning theory, and natural language processing.
  • Hands-on experience with major cloud vendor solutions such as AWS, Azure, and/or Google Cloud.
  • Experience with search, vector, and graph technologies such as Elasticsearch, OpenSearch, Solr, and Neo4j.
  • Experience evaluating large language models.
  • Background with scholarly publishing workflows, bibliometrics, or citation graphs.
  • Strong understanding of the data science life cycle, including feature engineering, model training, and evaluation metrics.
  • Familiarity with machine learning frameworks such as PyTorch, TensorFlow, and PySpark.
  • Experience with large-scale data processing systems such as Spark.

Responsibilities

  • Automate and orchestrate machine learning workflows across cloud and AI platforms including AWS, Azure, Databricks, and foundation model APIs such as OpenAI.
  • Maintain and version model registries and artifact stores to support reproducibility and governance.
  • Develop and manage CI/CD for machine learning, including automated data validation, model testing, and deployment.
  • Implement machine learning engineering solutions using platforms such as AWS SageMaker, MLflow, and Azure ML.
  • Build end-to-end custom SageMaker pipelines for recommendation systems.
  • Design and implement engineering components of GAR and RAG systems, including query interpretation and reflection, chunking, embeddings, hybrid retrieval, and semantic search; manage prompt libraries, guardrails, and structured outputs for large language models hosted on Bedrock, SageMaker, or self-hosted infrastructure.
  • Design and implement machine learning pipelines using Elasticsearch, OpenSearch, Solr, vector databases, and graph databases.
  • Build evaluation pipelines using offline information-retrieval metrics such as NDCG, MAP, and MRR; large language model quality metrics such as faithfulness and grounding; and A/B testing.
  • Optimize infrastructure costs through monitoring, scaling strategies, and efficient resource utilization.
  • Stay current with generative AI research, natural language processing, and retrieval-augmented generation, and apply state-of-the-art methods in experiments and systems.
  • Partner with subject-matter experts, product managers, data scientists, and responsible AI experts to translate business problems into data science solutions.
  • Collaborate and interface with operations engineers who deploy and run production infrastructure.
  • Define project scope with support from managers and execute projects independently.
  • Support the development and training of junior staff.
  • Support the development of best practices.

About the Company

RELX

Global information analytics and decision tools

RELX is a global provider of information-based analytics and decision tools for professionals across scientific, technical, medical, legal, risk, business, and exhibitions industries. It operates in four segments: Scientific, Technical & Medical; Risk & Business Analytics; Legal; and Exhibitions. Its products combine large datasets, analytics, and decision-support tools to help researchers, healthcare professionals, lawyers, and business leaders make informed choices, improve productivity, and achieve better outcomes. Revenue mainly comes from subscriptions, with additional income from transactional sales and advertising. RELX differentiates itself through its deep data assets, specialized industry knowledge, and multi-segment offerings that span content, analytics, and decision-support services. The company pursues a goal of delivering trusted information and insights while supporting corporate responsibility and alignment with the UN SDGs through its products and partnerships.

Company size
1,001-5,000
Company stage
IPO
Headquarters
London, United Kingdom
Founded
1894

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