Responsibilities
Design, build, and optimize Retrieval-Augmented Generation (RAG) applications.
Develop and manage document ingestion, chunking, embedding generation, retrieval, reranking, and source-grounded response workflows.
Design and operate vector search solutions using modern vector database technologies.
Validate retrieval quality, citation accuracy, relevance, coverage, and factual grounding using reproducible evaluation datasets.
Collaborate with cross-functional teams to improve response quality and reduce hallucinations.
Implement hybrid search strategies combining keyword, metadata, semantic/vector search, and reranking techniques.
Monitor and evaluate retrieval performance, latency, cost, and AI system quality.
Support the development of scalable and responsible Generative AI solutions across legal and professional information products.
Requirements
Hands-on experience with Retrieval-Augmented Generation (RAG) applications, including document ingestion, chunking, embedding generation, retrieval, reranking, and source-grounded responses.
Strong understanding of Generative AI and LLM capabilities, limitations, hallucination mitigation, and response-quality evaluation.
Experience designing and operating vector search solutions using Qdrant, Pinecone, pgvector, LanceDB, OpenSearch vector search, or equivalent technologies.
Ability to validate retrieval quality, citation accuracy, relevance, coverage, and factual grounding using reproducible evaluation datasets.
Preferred Qualifications
Experience building AI agents or multi-step workflows with tool use, memory, and human review.
Familiarity with agentic and LLM frameworks such as Google ADK, LangChain, LiteLLM, or MCP.
Experience with hybrid search strategies combining keyword, metadata, semantic/vector search, and reranking.
Experience applying RAG or Generative AI to legal, financial, publishing, or other highly regulated content domains.
Knowledge of LLM observability, including monitoring latency, cost, retrieval performance, and unsafe or unsupported outputs.
Work in a Way That Works for You
We promote a healthy work/life balance across the organisation. We offer an appealing working prospect for our people. With numerous wellbeing initiatives, shared parental leave, study assistance and sabbaticals, we will help you meet your immediate responsibilities and your long-term goals.
Working Pattern
Working flexible hours - flexing the times when you work in the day to help you fit everything in and work when you are the most productive.
About the Business
LexisNexis Legal & Professional® provides legal, regulatory, and business information and analytics that help customers increase their productivity, improve decision-making, achieve better outcomes, and advance the rule of law around the world. As a digital pioneer, the company was the first to bring legal and business information online with its Lexis® and Nexis® services. 





 We know your well-being and happiness are key to a long and successful career. We are delighted to offer country specific benefits. Click here to access benefits specific to your location.
We are committed to providing a fair and accessible hiring process. If you have a disability or other need that requires accommodation or adjustment, please let us know by completing our Applicant Request Support Form or please contact 1-855-833-5120.
Criminals may pose as recruiters asking for money or personal information. We never request money or banking details from job applicants. Learn more about spotting and avoiding scams here.
Please read our Candidate Privacy Policy.
We are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law.
USA Job Seekers
EEO Know Your Rights.
