Lennox W.

Key Skills

Software

Remotasks

Scale AI

Top Subject Matter

Computer Vision

Large Language Models

Mathematics Domain Expertise

Top Data Types

Image

Text

Document

Top Task Types

Object Detection

RLHF

Freelancer Overview

Data Annotation Specialist. Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Remotasks and Scale AI. Education includes Bachelor of Science, University of Nairobi (2019). AI-training focus includes data types such as Image and Text and labeling workflows including Object Detection and RLHF.

Labeling Experience

Data Annotation Specialist

RemotasksImageObject Detection

I performed detailed annotations on large datasets as part of computer vision projects. My responsibilities included image segmentation, object detection, and 3D LiDAR data labeling, ensuring project precision and accuracy. I also conducted quality reviews of annotation work completed by junior team members. • Used Remotasks to annotate images for object detection tasks • Applied segmentation techniques and performed 3D LiDAR annotation • Ensured strict compliance with project guidelines and data integrity • Provided feedback and error corrections to improve team labeling quality

2023 - Present

AI Data Trainer (RLHF & LLM Evaluation)

Scale AITextRLHF

As an AI Data Trainer, I labeled diverse machine learning datasets and evaluated large language models (LLMs) for accuracy and performance. I was responsible for both RLHF processes and domain-specific annotation, including detailed mathematics and logic tasks. My work contributed to improvements in model accuracy and reductions in annotation errors. • Labeled and rated text data for LLM fine-tuning tasks • Completed tasks for Scale AI clients on schedule within established SLAs • Conducted audits, wrote detailed error reports, and drove process improvements • Specialized in mathematics, logic, and LLM evaluation labeling

2021 - 2022

Education

Work History