For employers

Hire this AI Trainer

Sign in or create an account to invite AI Trainers to your job.

Invite to Job
L
Lonwabo M.

Lonwabo M.

3+ Year Professional Data Labeler | Image, Video, Audio, Text Annotator Spl

South Africa flagDurban, South Africa

Key Skills

Software

CVATCVAT
LabelboxLabelbox
Label StudioLabel Studio
Scale AIScale AI
SuperAnnotateSuperAnnotate

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
TextText
VideoVideo

Top Task Types

Audio RecordingAudio Recording
Entity (NER) ClassificationEntity (NER) Classification
Object DetectionObject Detection
TrackingTracking

Freelancer Overview

Highly detailed-oriented and technically proficient AI Trainer specializing in high-impact datasets for advanced Machine Learning applications. Proven expertise in applying complex annotation guidelines across diverse data types, with a focus on achieving exceptional data quality and consistency. Core Areas of Expertise -Computer Vision and Autonomous Systems -LLM Evaluation, Multi-turn dialogue annotation -Domain-Specific Labeling.

Labeling Experience

Label Studio

Named Entity Recognition (NER)

Label StudioLabel StudioDocumentDocumentBounding BoxBounding BoxPolygonPolygon

Identified and classified named entities (e.g., dates, currency, clauses parties), and extracted semantic relationships between them to structure complex, unstructured data.

2025
CVAT

Orthopedic Diagnostic Imaging

CVATCVATImageImageBounding BoxBounding BoxSegmentationSegmentation

Performed high-precision, pixel-level Keypoint Annotation on 3,000+ anonymized X-rays. task required marking specific anatomical bone landmarks (e.g., joint centers, fracture sites) to train an AI for automated medical measurement and detection.

2023 - 2025
Labelbox

Autonomous Vehicle Perception Data

LabelboxLabelboxImageImageSegmentationSegmentation

Executed high-precision pixel-level segmentation on 7,500+ diverse urban scenes, Meticulously labeled 25+ distinct object classes(e.g., road structure, fine occlusion, dynamic objects) to achieve a sustained quality rating of 92% accuracy for environmental perception models

2022 - 2024

LLM Dialogue Coherence and Safety

OtherTextTextRLHFRLHF

Provided human feedback and preference ranking on 12,000+ multi-turn conversational outputs. Task involved deep linguistic analysis, assessing responses for clarity, factual correctness, helpfulness, and adherence to complex safety guidelines.

2021 - 2022

Education

B

Berea College of Technology

Diploma, IT Studies

Diploma
2023 - 2023
S

Sithengile Secondary School

NQF Level 4, Matric

NQF Level 4
2015 - 2019

Work History

D

DHL Logistics

Logistic Assistant

Durban
2021 - 2022
D

Digital Insights

IT Support & Data Assistant

Durban
2019 - 2021