Vivian Mwendwa

AI Trainer & Prompt Engineer @ Pareto.AI

About

I am a results-driven professional with experience in AI training, data annotation, image labeling, and prompt engineering. Currently, I work as an AI Trainer and Prompt Engineer, specializing in training AI agents, designing and refining prompts, and evaluating AI model performance to ensure high-quality outcomes. Previously, I contributed to large-scale annotation projects at Aya Data and CloudFactory, where I focused on data labeling, image annotation, and quality assurance for AI/ML models. My work involved maintaining accuracy benchmarks, correcting model predictions, and collaborating with teams to deliver high-value datasets that power machine learning applications. Alongside my AI experience, I have worked as a Graphic Designer using tools such as CorelDRAW, Adobe Photoshop, and Canva to create engaging visual designs for print and digital platforms With a foundation in education and Administration operations, I bring strong analytical, problem-solving, and communication skills to every role. I am highly adaptable, work well in collaborative environments, and thrive in challenging projects that demand precision and innovation.

Country

Kenya

City

Nairobi

Industry

Computer Software

Skill

Natural Language Processing (NLP), Graphic Design Software, Image Design, Attention to Detail, RLHF, Computer Graphics Design, Artificial Intelligence (AI), Data Analysis, Data Entry, Adobe Photoshop, Canva, Graphic Design, Command Prompt, AI Prompting, Image Segmentation, GitHub, Data Labeling, Machine Learning, Large Language Models (LLM), Python (Programming Language)

Experience

AI Trainer & Prompt Engineer

Pareto.AI

2025-3 - Present · 1 yr 7 mos

-Trained AI agents and refined model outputs through prompt engineering. -Designed, tested, and optimized prompts for diverse use cases. -Evaluated AI model responses, identifying strengths and areas for improvement. -Worked closely with teams to enhance performance and ensure high-quality results.

Data labeling & Annotation

CloudFactory

2024-5 - 2026-1 · 1 yr 9 mos

-Supported the development of AI models by accurately labelling and annotating diverse datasets. -Ensured data quality through consistent review and verification processes. -Collaborated with teams to meet project deadlines and client requirements.

Data annotation specialist

Aya Data

2025-5 - 2025-7 · 3 mos

-Annotated large datasets to support the training and evaluation of AI/ML models. -Delivered high-quality annotations within strict deadlines, contributing to successful project outcomes. -Performed rigorous quality assurance checks to maintain data accuracy and integrity. Maintained high productivity while ensuring precision and consistency across datasets

Graphic Designer/ Administrative Operations Support

Godmatech Kenya Limited

2023-1 - 2024-3 · 1 yr 3 mos

Nairobi County, Kenya

-Designed visual content for print and digital platforms, including posters, banners, business cards, social media posts, and flyers. -Utilized CorelDRAW, Adobe Photoshop, and Canva to deliver creative and professional designs. -Collaborated with clients to translate requirements into impactful designs. -Balanced creativity with functionality to meet branding and communication goals.