Sigma AI
Dumisani Zangwa has a work experience spanning over three years. Dumisani started their career in 2020 as a Warehouse Assistant at Arjo, where they were responsible for dispatching and receiving stock, housekeeping, and cleaning hospitals rental systems. After working for Arjo for a little over a year, they joined Lancet Laboratories in February 2022 as an Administrative Clerk. In this role, they handled tasks such as receiving specimens, managing the filing system, and distributing samples to various laboratories. Most recently, Dumisani joined Sigma AI in March 2023 as a Data Transcriber.
Dumisani Zangwa obtained their Bachelor of Social Sciences degree in Psychology and Criminology from WSU - Walter Sisulu University. Dumisani attended the university from 2016 to 2019. In November 2019, Dumisani also obtained a Code 14 (EC) Driver's license certification.
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Sigma AI
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Sigma AI is a global training data collection, labeling and annotation services company. For companies building generative AI, including 4 out of 5 global tech giants, Sigma provides highest quality training data at scale. To achieve this, we customize teams, processes and technology, iterating on all aspects of your project in constant feedback loops. Human in-the-loop is built into every step to establish ground truths, improve data quality and reduce bias. With 30+ years of experience in the AI space, the Sigma team brings their deep understanding of how data and algorithms interact to help companies train smarter AI that serves humans better.