Sisa Sulelo

Key Skills

Software

Appen

Clickworker

Data Annotation Tech

Google Cloud Vertex AI

Img Lab

Other

Internal/Proprietary Tooling

Label Studio

Top Subject Matter

No subject matter listed

Top Data Types

Document

Image

Text

Top Task Types

Classification

Data Collection

Evaluation/Rating

Question Answering

Translation/Localization

Freelancer Overview

I have almost 3 years of experience contributing to AI training through data labeling, evaluation, and content review, with a strong focus on English (South African/USA/UK) language tasks. My background in business, finance, and communication equips me to handle complex text annotation, model evaluation, and document analysis with accuracy and professionalism. I am skilled in assessing AI outputs for quality, tone, and reliability, as well as creating and testing prompts to improve model performance. My specialisations include evaluation/rating, prompt and response writing, text summarisation, and question answering. I have supported projects involving business and financial content, customer service dialogue testing, and LLM evaluation for diverse cultural contexts. Combining attention to detail with strong analytical and communication skills, I ensure that AI systems are trained to meet high standards of clarity, relevance, and user impact.

Labeling Experience

Business Document Summarisation & Annotation

Internal Proprietary ToolingDocumentEntity Ner ClassificationText Summarization

Annotated and summarised corporate and financial documents for AI model training. Highlighted key entities, classified sections, and rated text quality for consistency and clarity. Ensured models could accurately extract and summarise critical business insights.

Annotated and summarised corporate and financial documents for AI model training. Highlighted key entities, classified sections, and rated text quality for consistency and clarity. Ensured models could accurately extract and summarise critical business insights.

2024

Image Annotation for Object Detection

Label StudioImageBounding BoxPolygon

Annotated images for AI model training, including drawing bounding boxes and polygons around objects of interest, segmenting items, and classifying image content. Ensured high-quality annotations by following strict guidelines and performing consistency checks. Supported projects aimed at improving AI object detection and image recognition accuracy in corporate and general-purpose datasets.

Annotated images for AI model training, including drawing bounding boxes and polygons around objects of interest, segmenting items, and classifying image content. Ensured high-quality annotations by following strict guidelines and performing consistency checks. Supported projects aimed at improving AI object detection and image recognition accuracy in corporate and general-purpose datasets.

2024 - 2025

LLM Text Evaluation and Prompt Testing

Internal Proprietary ToolingTextQuestion AnsweringText Generation

Contributed to the training and evaluation of large language models by rating AI-generated responses for accuracy, relevance, and tone in English (South African). Created and tested prompts, annotated question-answer pairs, and summarised complex documents to improve AI understanding and output quality. Ensured high standards through consistency checks and attention to context, supporting AI systems used in business, finance, and conversational applications. Project involved reviewing hundreds of responses per week and applying strict quality assurance guidelines.

Contributed to the training and evaluation of large language models by rating AI-generated responses for accuracy, relevance, and tone in English (South African). Created and tested prompts, annotated question-answer pairs, and summarised complex documents to improve AI understanding and output quality. Ensured high standards through consistency checks and attention to context, supporting AI systems used in business, finance, and conversational applications. Project involved reviewing hundreds of responses per week and applying strict quality assurance guidelines.

2023 - 2025

Conversational AI Response Evaluation

Internal Proprietary ToolingTextQuestion AnsweringEmotion Recognition

Reviewed and annotated AI chatbot conversations to assess tone, empathy, and clarity. Classified responses based on appropriateness and accuracy, ensuring the AI met professional communication standards. Applied quality checks to improve model reliability in real-world dialogue scenarios.

Reviewed and annotated AI chatbot conversations to assess tone, empathy, and clarity. Classified responses based on appropriateness and accuracy, ensuring the AI met professional communication standards. Applied quality checks to improve model reliability in real-world dialogue scenarios.

2023 - 2024

Education

Work History