data annotation jobs in London

Bloomberg is seeking a Team Leader for the Document Research team within Data AI to drive evaluation and annotation programmes for AI applications and experiences. You will work with CTO, Engineering and Product to shape data governance and quality across multiple domains, ensuring scalable, high-quality annotated data for model evaluation.The ideal...

Sigma.AI is seeking candidates for linguistic data projects. You will categorize, annotate, correct and transcribe diverse content to support AI training and evaluation.The role emphasizes accuracy, attention to detail, and collaboration in a global, multi-language environment. Requirements include native/bilingual Serbian, fluent English, and basic computer...

Sigma.AI is seeking candidates for linguistic data work, including categorization, annotation, transcription, evaluation, and content localization within diverse AI projects. You will engage in voice recording, conversational interactions, and validation across multimedia formats.Ideal applicants are Slovak native or bilingual speakers with strong English...

Sigma.AI is seeking candidates for linguistic projects focused on data annotation, transcription, categorization, and localization to support AI. You will work on diverse content across audio, video, and text, performing correction and validation to ensure high-quality data for machine learning models.The role requires native Dutch skills, fluent English,...

Mercor is seeking a meticulous native Korean annotator to build training data for Korean documents, among others. You will verify each page for legibility, completeness, and content accuracy, then create structured maps with precise reading order.You will bound regions, transcribe exactly in Hangul, and capture metadata. A second Korean expert reviews every...

Genpact is seeking a Sr. Engineer - Testing & Quality Assurance to lead testing and QA efforts for AI-related projects in the United Kingdom.The role focuses on designing and standardizing annotation processes, governing schemas, and evaluating high-risk AI outputs to ensure auditability and quality. You will collaborate with data scientists, content...

Explore full-time remote Data Generalist jobs in London for 2026 at Rex.zone. Power AI training pipelines through expert data labeling, RLHF evaluation, and quality assurance for large language models. Core Responsibilities in AI/ML Training Workflows Your day-to-day operations will revolve around strict annotation guidelines compliance and complex content...

Genpact is seeking an experienced QA/Annotation lead to orchestrate high‑quality AI annotation across multiple use cases from our UK office. You will design prompts, schemas, and evaluation rubrics, while ensuring auditability and bias mitigation. You’ll collaborate with data scientists and product teams, driving delivery improvements and mentoring...

Sigma.AI, a global technology company specializing in data collection and annotation for Artificial Intelligence, invites you to join its linguistic projects. You will categorize, annotate, correct, transcribe, evaluate, engage in conversational interactions, voice recording, content creation, localization and validation.We seek a native English speaker with...

Overview Microsoft AI is looking for Researchers and Research Engineers to join our Pre-training Data team and help train the world’s most capable AI frontier models, pushing the boundaries of scale, performance and product deployment. The Pre-Training team at Microsoft AI tackles some of the most challenging problems in deep learning at scale. As a team,...

TL;DR: We're looking for a Data Labeling Lead to build our annotation team from zero – setting quality standards, designing evaluation frameworks, and running the labeling operations behind our safety evals, RLHF, and benchmarks. You'll own quality, throughput, and cost while working side by side with our AI researchers. About us White Circle is an AI...

Location: Oxford or London (Hybrid)The Mission: Why We ExistGenomics is a science-led transatlantic TechBio combining large-scale genetic and health data with proprietary analytics to accelerate drug discovery and advance predictive, preventative healthcare. We are united by a single vision to help people live longer healthier lives, using the power of...

Data Scientist (Masters) — AI Data Trainer About The Role What if your deep knowledge of machine learning, statistical inference, and data engineering could directly shape how the world's most advanced AI thinks and reasons? We're looking for data scientists with advanced training to help build and stress-test cutting-edge AI models. You'll design the...

About the teamElsevier’s mission is to help researchers, clinicians, and life sciences professionals advance discovery and improve health outcomes through trusted content, data, and analytics.This role sits within Elsevier’s Platform Data Science organization, a centralized AI and data science group responsible for advancing intelligent discovery,...

Domain LLM Data Annotation Specialist, ContractorWe are looking for part-time Domain LLM Data Annotation Specialists to support high-quality data annotation and quality evaluation for large language model training and evaluation. This role covers specialized domains including finance, law, healthcare, insurance, semiconductors, manufacturing, energy,...

Eigent AI is seeking part-time Domain LLM Data Annotation Specialists in Greater London. The role involves annotating and evaluating specialized data for large language models across various domains such as finance, healthcare, and law.Candidates should have domain expertise or experience, ensuring high-quality evaluations and providing feedback to improve...

Sigma AI, a global technology company specializing in data collection and annotation for AI, is seeking candidates for data annotation roles. You will perform categorization, transcription, annotation, and quality checks on audio, video, images, and text data.Native Nepali and fluent English are required, with strong attention to detail and basic computer...

Sigma.AI is seeking talent for data annotation and related tasks to support global AI initiatives. The role involves a variety of data labeling activities across media types in a collaborative office setting.Ideal candidates will be native Indonesian or bilingual, fluent in English, and possess basic computer skills. Experience in data annotation is a plus,...

RequirementsExtremely strong software engineering skillsStrong expertise in designing and conducting data collection tasks, including working with human annotatorsStrong statistical skills and experience evaluating scientific experiments related to data collection and model performanceExperience analysing datasets with respect to their quality, biases, and...

YO AI Labs is seeking a Senior AI Trainer on a remote, contractor basis to support a customer project focused on annotating video data for AI model training. You will review robotic-arm footage, apply labeling guidelines, and deliver precise, timestamped annotations to high quality standards.The role emphasizes attention to detail, clear written and verbal...