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Bruno Joshua

@brunojoshua

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AI evaluator and data annotator specialized in NLP, RLHF, and search quality improvement.

Kenya

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What I'm looking for

I’m looking for remote opportunities where I can apply my experience in AI data annotation, multimodal dataset preparation and model training support. My background includes working with image, video and text datasets using tools such as Label Studio and Roboflow, performing tasks like bounding box annotation, segmentation and quality review.

I am an AI evaluator and data annotator with deep experience in NLP model training, RLHF, and search quality evaluation. I focus on delivering high-quality labeled datasets and precise content moderation to improve model performance.

Across remote roles, I have annotated large-scale vision and language datasets using tools like Labelbox and CVAT, applied bounding boxes, polygons and segmentation, and performed intent classification and sentiment analysis to refine model behavior.

I excel at evaluating AI-generated outputs for factual correctness, safety compliance and contextual appropriateness, and I routinely identify misinformation and policy violations to strengthen moderation systems.

I am a reliable remote professional who thrives in fast-paced environments, values independence and accountability, and consistently delivers meticulous, results-driven work to support high-impact AI projects.

Experience

Work history, roles, and key accomplishments

Current

AI Data Annotator & LLM Trainer

Current

Open TrainAI

Jan 2025 - Present (1 year 2 months)

Annotated 100+ hours of autonomous vehicle image and car video frame datasets using Labelbox and CVAT, applying bounding boxes, polygons and segmentation to improve object detection and scene-understanding models.

Labelbox CVAT Data Annotation Computer Vision Segmentation Object Detection Model Training

Current

AI Data Annotator

Current

Open TrainAI

Jan 2025 - Present (1 year 2 months)

Annotated 100+ hours of autonomous vehicle image datasets and 100+ hours of car video frames using Labelbox and CVAT, applying bounding boxes, polygons and segmentation to improve object detection and scene-understanding models.

Labelbox CVAT Segmentation Computer Vision Object Detection Data Quality

Social Media Evaluator

Independent Contractor

Jan 2023 - Jan 2025 (2 years)

Conducted AI-driven evaluations of social media content and search results, analysing relevance, sentiment and compliance while identifying misinformation and policy violations to refine moderation systems and ranking algorithms.

Content Moderation Search Evaluation Sentiment Analysis Compliance Policies AI Evaluation Reporting

AI Data Annotator

Independent Contractor

Jan 2022 - Jan 2023 (1 year)

Annotated and categorized large NLP datasets for model training, performing intent classification, sentiment analysis and contextual interpretation and evaluating AI outputs for factual correctness and safety.

Data Annotation NLP Sentiment Analysis Model Evaluation Quality Assurance

AI Data Annotator & NLP Trainer

Independent Contractor

Jan 2022 - Jan 2023 (1 year)

Annotated and categorized large NLP datasets for intent classification and sentiment analysis, evaluated AI outputs for factual correctness and safety, and supported model improvement through quality assessments.

NLP Sentiment Analysis Data Annotation Annotations Model Validation

Search Quality Rater

OutlierAI

Jan 2020 - Jan 2022 (2 years)

Reviewed search engine query results against guidelines to assess relevance, accuracy and ranking effectiveness, providing ratings that informed search quality improvements and user experience enhancements.

Relevance SEO Web Research Quality Reporting

AI Trainer & Content Moderator

Mindrift (Global)

Jan 2018 - Jan 2020 (2 years)

Evaluated and classified AI-generated responses and search results, applied annotation guidelines for quality and policy compliance, and performed RLHF tasks including response comparison and scoring to improve model outputs.

Content Moderation Annotations Policy Enforcement AI Evaluation