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BRUNO JOSHUA
DATA ANNOTATOR
Highly skilled AI Evaluator and Content Moderator with deep expertise in search quality analysis, NLP-driven insights and rigorous online research. Adept at dissecting search engine outputs, pinpointing factual accuracy and elevating content relevance to strengthen AI performance. Excel at data annotation, RLHF and supporting high- impact model training. A reliable remote professional who thrives in fast-paced environments, consistently delivering high-quality results with independence and accountability.
www.linkedin.com/in/bruno-joshua-011a543aa
*************@*****.*** Nairobi, Kenya
WORK EXPERIENCE
AI Data Annotator & LLM Trainer Open Train AI
Remote 2025 – Present
Annotated 100+ hours of autonomous vehicle
image datasets using Label box supporting
computer vision model training.
Annotated and classified 100+ hours of car video frames using CVAT enabling AI models to learn
temporal and contextual visual cues.
Applied bounding boxes, polygons and
segmentation techniques to label vehicles, lanes,
traffic elements and complex scene components.
Delivered high-quality labelled datasets that
supported object detection, scene understanding
and visual-context learning models.
Social Media Evaluator Independent Contractor
Remote 2023 – 2025
Conduct AI-driven evaluations of social media
content, analysing relevance, sentiment and
compliance with platform guidelines.
Review and rate search engine results to
improve AI-based ranking algorithms and
enhance content discoverability.
Provide in-depth feedback on AI-generated
posts to ensure accuracy, appropriateness and
user engagement.
Identify and flag misinformation, offensive
content and policy violations to refine AI
moderation systems.
EDUCATION
Bachelor of Science
in Computer Science
Focus: Artificial
Intelligence & Data
Analytics
Stanford University,
California
09/2014 - 12/2018
CERTIFICATIONS
Content Moderation & AI
Training Certification
SEO & Digital Research
Certification
Natural Language Processing
(NLP) Basics Certification
AI Data Annotator & NLP Model Trainer
Remote 2022 - 2023
Annotated, labelled and categorized large
datasets to support the training and
improvement of NLP and AI models.
Performed intent classification, sentiment
analysis and contextual interpretation to enhance
model understanding and accuracy.
Evaluated AI-generated outputs for factual
correctness, safety compliance and overall
response quality.
Search Quality Rater Outlier AI
Remote 2020 – 2022
Reviewed search engine query results to
determine relevance, accuracy and ranking
effectiveness based on strict guidelines.
Assessed and rated the quality of search results and web pages to improve user experience.
Assessed and rated the quality of search results and web pages to improve user experience.
AI Trainer & Content Moderator Mindrift
(Global)
Remote 2018 – 2020
Evaluated and classified AI-generated responses
and search results to ensure accuracy, relevance
and contextual appropriateness.
Applied detailed annotation and evaluation
guidelines to rate content quality, intent
alignment and policy compliance.
Performed text-based RLHF and evaluation
tasks, including response comparison and
quality scoring.
Performed text-based RLHF and evaluation
tasks, including response comparison and
quality scoring.
TECHNICAL PROFICIENCY
SEO & Research Tools: Keyword Research Tools,
Google Analytics, SEMrush, Ahrefs
Content Moderation Tools: AI-powered Content
Review Tools, Social Media Moderation Dashboards
(Facebook & Twitter)
Productivity & Collaboration: Slack, Trello,
Google Workspace, Microsoft Office
Search & AI Platforms: AI Chatbots, Data
Annotation Tools, Google Search, Bing, Yahoo
SKILLS
AI & NLP: RLHF, NLP Model
Training, Data Annotation
(CVAT, Label box), Intent
Classification, Computer
Vision.
Search & Research: Search
Quality Evaluation, SEO,
Keyword Analysis,
Information Verification,
Fact-Checking.
Content Safety: Content
Moderation, Safety
Judgment, Policy Application,
Sentiment Analysis.
Soft Skills: Critical Thinking,
Analytical Reasoning,
Cultural Awareness, Remote
Task Management.
LANGUAGES
English: C2
Swahili: Native