Jonathan I.

Key Skills

Software

Labelbox

CVAT

Top Subject Matter

Natural Language Processing

Multimedia AI

Speech Recognition

Top Data Types

Text

Video

Audio

Document

Top Task Types

RLHF

Object Detection

Transcription

Freelancer Overview

AI Data Annotator / LLM Trainer. Core strengths include Labelbox and CVAT. AI-training focus includes data types such as Text, Video, and Audio and labeling workflows including RLHF, Object Detection, and Transcription.

Labeling Experience

AI Data Annotator / LLM Trainer

LabelboxTextRLHF

As an AI Data Annotator and LLM Trainer at populli.ai, I annotated and reviewed large text datasets to support the training of large language models. I evaluated AI-generated responses for quality and provided in-depth feedback to refine prompt engineering workflows. My work involved strict adherence to complex annotation guidelines and collaborative quality assurance to ensure data accuracy. • Performed high-volume annotation and response evaluation tasks • Provided feedback to improve LLM outputs and guideline clarity • Collaborated with distributed teams to standardize workflows • Utilized multiple annotation platforms for text data

2024 - Present

Multimedia Data Annotator (Video & Audio)

LabelboxAudioTranscription

As a Multimedia Data Annotator at RWS.com, I labeled and transcribed audio datasets for machine learning and speech recognition tasks. Duties included audio segmentation, transcription, and speaker identification according to specific requirements. I routinely delivered projects meeting accuracy and guideline targets. • Performed audio transcription and speaker identification • Labeled and segmented audio clips for model training • Assisted with ambiguous cases by referring to managers • Used CVAT and Labelbox for annotation and transcription tasks

2022 - 2024

Multimedia Data Annotator (Video & Audio)

CVATVideoObject Detection

In my role as Multimedia Data Annotator at RWS.com, I labeled and segmented video datasets for machine learning applications. I annotated objects, actions, and visual elements for object and action recognition tasks. I maintained high accuracy standards while completing projects under tight deadlines. • Annotated videos for scene, object, and action analysis • Collaborated on ambiguity resolution with project managers • Ensured task consistency using defined guidelines • Used CVAT and Labelbox as primary annotation tools

2022 - 2024

Education

Work History