Martha Nkan

Executed complex multi-modal annotation tasks on the Toloka AI crowdsourcing platform for the 'Minddraft' project, spanning image evaluation, prompt-image pair relevance, and fact checking. Completed thousands of micro-tasks with a 99% acceptance rate, providing high-quality labelled data used to train and evaluate advanced AI models.

Spearheaded QA operations for large-scale annotation projects, collaborating with ML engineers to refine datasets and boost model precision by 20%. Designed and implemented automated QA scripts and Excel-based workflows, reducing data review time by 30% and enhancing consistency across thousands of annotations.

Provided executive-level virtual assistance to a non-profit tech training organization, scheduling appointments, coordinating calendars, and travel arrangements for senior staff. Handled all email correspondence and communication tasks, drafting and proofreading documents and reports leveraging tools like Firefly, ChatGPT and QuillBot.

Provided executive support to entrepreneurs and business leaders, managing calendars, inboxes, and appointments to enhance time management and reduce scheduling conflicts. Conducted market research and lead generation via LinkedIn Sales Navigator, identifying and qualifying 10% of new leads for client business development efforts.

Annotated sewer inspection footage to identify cracks, blockages, and structural defects, applying precise labelling techniques for high-quality data in an AI-powered infrastructure analysis system. Maintained >98% accuracy while processing large datasets of industrial inspection images, enabling the client’s computer vision models to detect sewer defects with greater reliability.

Managed end-to-end annotation workflows for Large Language Models and Computer Vision tasks, ensuring datasets were clean and model-ready. Utilized tools like Labelbox, CVAT, and proprietary platforms to accurately tag data, reducing labelling errors by 15% through a structured double-review system.

Graduated with a strong foundation in software development, algorithms, and data management relevant to AI and IT projects.

Completed the mandatory National Youth Service Corps program.