Defined.ai is a leading provider of high-quality, ethically sourced data for Artificial Intelligence and Machine Learning model training. We host the world's largest AI marketplace and offer end-to-end services to help companies accelerate their AI solutions. Backed by significant funding and recognized globally for our commitment to ethical AI, we operate in a fast-paced, innovative environment with offices in Seattle and Lisbon.
Working Model: 3 times per week at our offices.
Who are we looking for?
We’re looking for someone that’s passionate about Information Security and has 3-5 years of experience in similar functions. This person has a few years of experience in these domains and wants to continue growing their knowledge in this field. He or she feels thrilled to embrace a unique challenge on a leading AI company, and is eager to share his/her own experiences and knowledge, as well as learn and collaborate with a team of high-minded cybersecurity professionals. Our chosen candidate is determined and a strong critical thinker and someone that’s passionate and committed to help us achieve our goals.
You spend a lot of your time at work, so it should be challenging, fun and interesting. At Defined.ai it will be all of those things and more. Here’s what we offer:
Privacy Notice: defined.ai/candidate-privacy-statement

Defined.ai is the leading provider of ethical AI data, offering the world’s biggest ethical AI data marketplace alongside subscriptions for flexible data access and custom services. With deep expertise in artificial intelligence and machine learning, Defined.ai delivers high-quality, ethically sourced training data, enabling companies to accelerate their AI solutions with data that is secure, bias-free, and compliant with ethical and legal standards.
Founded by Daniela Braga, PhD, in 2015, Defined.ai has earned recognition in top-tier outlets, including Forbes, Fortune, Gartner, CB Insights, and Inc., and has received numerous awards, with appearances on prestigious lists like Forbes AI 50, Deloitte Fast 100, and Inc. 500.
The company has raised over $80 million in funding and is headquartered in Seattle, WA, USA, with additional offices in Lisbon, Portugal.