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Alizwa Mahamba S

Alizwa Mahamba S

AI Trainer, Data Labller - English

South Africa flagJohannesburg, South Africa
$14.00/hrIntermediateOtherLabelboxMicro1

Key Skills

Software

Other
LabelboxLabelbox
Micro1
OneFormaOneForma
MindriftMindrift

Top Subject Matter

Aviation Communication
LLM Evaluation
Large Language Model Evaluation

Top Data Types

AudioAudio
TextText
DocumentDocument

Top Task Types

TranscriptionTranscription
Data CollectionData Collection
Object DetectionObject Detection
Function CallingFunction Calling
Evaluation/RatingEvaluation/Rating
Text GenerationText Generation
ClassificationClassification

Freelancer Overview

I have hands-on experience in Al training data, transcription, and model evaluation through roles with Alignerr, Outlier, and Invisible Technologies. At Aligner, I convert complex tower-to-pilot audio into precise written transcriptions, following strict guidelines to ensure high accuracy and consistency. I also evaluate and refine large language model outputs, particularly assessing function-calling performance, identitying patterns or failures, and improving results using detailed, rubric-based scoring standards. This role has strengthened my attention to detail, analytical thinking, and ability to maintain quality under structured evaluation frameworks. As a Generalist at Outlier and a General Specialist at Invisible Technologies, I have worked on diverse data annotation tasks, including labeling various data types, distinguishing nuanced differences in datasets, completing coding-related tasks, and directly interacting with Al systems. I specialize in training and evaluating large language models by verifying response accuracy, clarity, and safety. My ability to apply structured guidelines, maintain consistency across complex tasks, and contribute to improving Al model performance sets me apart in the field of Al training and data labeling,

IntermediateEnglish

Labeling Experience

Generalist

OtherTextData Collection
At OUTLIER, I performed data annotation and labeling of various data types. I distinguished between specific data categories, executed annotation tasks, and interacted with AI systems to complete assignments. I contributed to the improvement of AI training data by ensuring accurate label application. • Labeled and annotated diverse datasets according to task requirements. • Conducted data distinction and category identification. • Supported AI training through high-quality labeling. • Collaborated on coding-related annotation projects.

At OUTLIER, I performed data annotation and labeling of various data types. I distinguished between specific data categories, executed annotation tasks, and interacted with AI systems to complete assignments. I contributed to the improvement of AI training data by ensuring accurate label application. • Labeled and annotated diverse datasets according to task requirements. • Conducted data distinction and category identification. • Supported AI training through high-quality labeling. • Collaborated on coding-related annotation projects.

2024 - Present

ATC Description and Transcription- English

OtherAudioTranscription
At ALIGNERR, I converted ATC tower-to-pilot English audio communications into text with strict adherence to transcription guidelines. I edited and refined complex audio transcriptions for accuracy and clarity. I evaluated function calling outputs from large language models against rubric-based standards and provided scores. • Transcribed and edited aviation audio data with high precision. • Evaluated LLM function calls for performance and quality. • Applied rubric-based scoring protocols to assess standards. • Enhanced audio-to-text datasets for model improvement.

At ALIGNERR, I converted ATC tower-to-pilot English audio communications into text with strict adherence to transcription guidelines. I edited and refined complex audio transcriptions for accuracy and clarity. I evaluated function calling outputs from large language models against rubric-based standards and provided scores. • Transcribed and edited aviation audio data with high precision. • Evaluated LLM function calls for performance and quality. • Applied rubric-based scoring protocols to assess standards. • Enhanced audio-to-text datasets for model improvement.

2024 - Present

General Specialist

OtherText
As an AI training and evaluation specialist at Invisible Technologies, I conducted quality assessment of large language model outputs. My responsibilities included verifying accuracy, clarity, and safety of generated responses using rubric-based scoring. I participated in model feedback and fine-tuning efforts. • Verified LLM responses and evaluated against guidelines. • Scored output quality in terms of safety and clarity. • Assisted in fine-tuning and continuous feedback loops. • Ensured evaluation aligned with standardized processes.

As an AI training and evaluation specialist at Invisible Technologies, I conducted quality assessment of large language model outputs. My responsibilities included verifying accuracy, clarity, and safety of generated responses using rubric-based scoring. I participated in model feedback and fine-tuning efforts. • Verified LLM responses and evaluated against guidelines. • Scored output quality in terms of safety and clarity. • Assisted in fine-tuning and continuous feedback loops. • Ensured evaluation aligned with standardized processes.

2024 - 2026

Education

U

University of Monash (IIE MSA)

Bachelor of Computer and Information Sciences, Computer and Information Sciences

Bachelor of Computer and Information Sciences
2021 - 2023

Work History

N

N/A

Data Scientist

Johannesburg
2022 - Present
G

Gracewell Methodist Church

Front-End Web Developer

Centurion
2023 - 2024