Marchell Stevens

Key Skills

Software

Other

Remotasks

Appen

Top Subject Matter

LLM code evaluation and AI output safety/alignment

Autonomous vehicles and machine perception

Content moderation

Top Data Types

Image

Text

Document

Top Task Types

Bounding Box

Classification

Freelancer Overview

AI Data Trainer & Freelance Annotator. Brings 5+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other, Remotasks, and Appen. Education includes Bachelor of Science, KCA University (2022). AI-training focus includes data types such as Computer Code, Programming, and Image and labeling workflows including Computer Programming, Coding, and Bounding Box.

Labeling Experience

AI Data Trainer & Freelance Annotator

Other

As an AI Data Trainer and Freelance Annotator at Outlier AI, I conducted code evaluation and correctness labeling for large language model (LLM) training. My work included providing RLHF feedback, rewriting AI outputs for alignment, and maintaining high task quality standards. I consistently met platform quotas and upheld top-tier annotator rankings. • Evaluated and labeled Python, JavaScript, and Bash code tasks • Executed RLHF comparative and evaluative feedback tasks • Focused on factual accuracy, tone, and instruction following in AI outputs • Utilized Outlier AI’s proprietary web platform for task execution

As an AI Data Trainer and Freelance Annotator at Outlier AI, I conducted code evaluation and correctness labeling for large language model (LLM) training. My work included providing RLHF feedback, rewriting AI outputs for alignment, and maintaining high task quality standards. I consistently met platform quotas and upheld top-tier annotator rankings. • Evaluated and labeled Python, JavaScript, and Bash code tasks • Executed RLHF comparative and evaluative feedback tasks • Focused on factual accuracy, tone, and instruction following in AI outputs • Utilized Outlier AI’s proprietary web platform for task execution

2023 - Present

Data Annotator & Tasker

RemotasksImageBounding Box

As a Data Annotator and Tasker at Remotask, I performed image and video annotation for autonomous vehicle datasets. My tasks included labeling with bounding boxes, segmentation masks, and point cloud/LIDAR annotation. I also contributed to text transcription and sentiment classification projects. • Labeled and classified road objects in images and video • Executed 2D/3D annotation and segmentation tasks with high accuracy • Completed specialized point cloud and LIDAR datasets • Used Remotask platform in collaboration with Scale AI

As a Data Annotator and Tasker at Remotask, I performed image and video annotation for autonomous vehicle datasets. My tasks included labeling with bounding boxes, segmentation masks, and point cloud/LIDAR annotation. I also contributed to text transcription and sentiment classification projects. • Labeled and classified road objects in images and video • Executed 2D/3D annotation and segmentation tasks with high accuracy • Completed specialized point cloud and LIDAR datasets • Used Remotask platform in collaboration with Scale AI

2022 - 2024

AI Rater & Content Evaluator

AppenTextClassification

As an AI Rater and Content Evaluator at Appen, I rated and categorized web content, search results, and social media for AI training. Tasks also included Named Entity Recognition (NER), document classification, and speech transcription. I maintained high Inter-Annotator Agreement scores across all projects. • Performed NER tagging and document category assignment • Labeled relevance and policy compliance for web and social content • Conducted audio transcription and speaker annotation tasks • Used Appen’s proprietary labeling software

As an AI Rater and Content Evaluator at Appen, I rated and categorized web content, search results, and social media for AI training. Tasks also included Named Entity Recognition (NER), document classification, and speech transcription. I maintained high Inter-Annotator Agreement scores across all projects. • Performed NER tagging and document category assignment • Labeled relevance and policy compliance for web and social content • Conducted audio transcription and speaker annotation tasks • Used Appen’s proprietary labeling software

2021 - 2023

Education

Work History