AI Data Annotation Jobs (Remote)

AI data annotation jobs are specialized roles that create and evaluate training data for ML systems, including LLMs and vision models. On Rex.zone, you’ll label text, images, audio, and video; perform RLHF and prompt evaluation; run QA against annotation guidelines; and support LLM training pipelines and content safety labeling. Typical workflows span named entity recognition, computer vision annotation, dialogue evaluation, and test set curation for model performance improvement. Whether you’re entry-level or senior, freelance contractor or full-time remote, Rex.zone connects you with AI labs, tech startups, BPOs, and annotation vendors seeking high‑precision data labeling talent.

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Key Responsibilities

Produce high-quality labels across NLP, computer vision, and speech datasets; execute RLHF tasks and prompt evaluation for large language model evaluation; ensure training data quality via annotation guidelines compliance, inter-annotator agreement, and QA evaluation; create and refine gold sets and rubrics; triage edge cases, escalate ambiguities, and document decisions; contribute to model performance improvement by identifying failure modes and data gaps; maintain throughput targets while upholding precision and recall.

Required Qualifications

Strong reading comprehension and attention to detail; ability to follow complex annotation guidelines and provide consistent rationales; familiarity with data labeling tools (e.g., Label Studio, CVAT, Doccano); comfort with taxonomies, ontologies, and instructions updates; basic understanding of LLMs and RLHF concepts; reliable internet and remote work setup; ability to meet quality bar measured by gold sets and auditing; excellent written communication in English.

Preferred Experience

Hands-on RLHF or LLM evaluation; named entity recognition (NER), sentiment, toxicity, and content safety labeling; computer vision annotation (bounding boxes, polygons, keypoints); ASR transcription and QA; multilingual annotation; domain expertise in healthcare, finance, retail, or legal; exposure to prompt engineering, test set design, and model red-teaming.

Tools, Domains, and Workflows

NLP: NER, summarization, classification, dialogue rating, prompt evaluation. Computer Vision: detection, segmentation, OCR QA. Content Safety: policy mapping, severity scoring, age-appropriateness. Speech/Audio: transcription, diarization QA. Workflows include instruction tuning dataset creation, safety alignment (RLHF), and evaluation set curation for large language models.

Work Arrangements and Benefits

Remote-first roles with full-time, part-time, contract, and freelance options; opportunities from AI labs, tech startups, BPOs, and annotation vendors; entry-level pathways with paid training; senior reviewer/lead tracks; timezone-flexible shifts; performance bonuses tied to quality metrics; recurring projects for consistent income.

How We Evaluate Candidates

Short skills test covering guidelines comprehension and edge-case decisions; gold-set calibration and inter-annotator agreement; pilot task to assess annotation speed and precision; ongoing QA evaluation with targeted feedback loops; advancement to reviewer and quality lead for top performers.

How to Apply on Rex.zone

Create your Rex.zone profile, select domains (NLP, CV, content safety, LLM training), complete the onboarding quiz, and join matching talent pools. Apply to live projects, complete the sample task, and start contributing to AI/ML training pipelines.

AI Data Annotation Jobs — Frequently Asked Questions

  • Q: What does an AI data annotator do?

    Annotators create, label, and evaluate training data for AI/ML systems—e.g., NER for NLP, bounding boxes for computer vision, RLHF and prompt evaluation for LLMs, and QA to ensure guideline compliance.

  • Q: Are these roles fully remote?

    Yes. Most roles on Rex.zone are remote with flexible hours. Some projects request certain time zones for collaboration or data residency.

  • Q: What employment types are available?

    Full-time, part-time, contract, freelance, temporary, and internship roles are available across AI labs, startups, BPOs, and annotation vendors.

  • Q: What skills are required to get started?

    Excellent attention to detail, strong reading comprehension, ability to follow annotation guidelines, and basic familiarity with labeling tools. Understanding of LLMs and RLHF is a plus.

  • Q: Which tools might I use?

    Common tools include Label Studio, CVAT, Doccano, Scale-like interfaces, and custom LLM evaluation dashboards for prompt and response rating.

  • Q: How is quality measured?

    Gold-set accuracy, inter-annotator agreement, audit pass rates, and guideline rationale quality. Consistency and edge-case handling are key.

  • Q: Can entry-level candidates apply?

    Yes. Entry-level candidates can join after passing a short calibration test. Training and feedback help you ramp up quality and speed.

  • Q: What domains can I work in?

    NLP, computer vision, content safety, LLM training and evaluation, and speech/audio transcription with QA.

  • Q: How do I apply on Rex.zone?

    Create a profile, choose domains, complete the onboarding quiz, and apply to open projects. Matching pools will notify you when new roles fit your skills.

230+Domains Covered
120K+PhD, Specialist, Experts Onboarded
50+Countries Represented

Industry-Leading Compensation

We believe exceptional intelligence deserves exceptional pay. Our platform consistently offers rates above the industry average, rewarding experts for their true value and real impact on frontier AI. Here, your expertise isn't just appreciated—it's properly compensated.

Work Remotely, Work Freely

No office. No commute. No constraints. Our fully remote workflow gives experts complete flexibility to work at their own pace, from any country, any time zone. You focus on meaningful tasks—we handle the rest.

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