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Job Title


Machine Learning Intern


Company : GPTZero


Location : Toronto, Ontario


Created : 2026-03-25


Job Type : Full Time


Job Description

GPTZero is on a mission to restore trust and transparency on the internet. As the leading AI detection platform, we empower educators, students, journalists, marketers, and writers to navigate the evolving landscape of AI-generated content. With millions of users and institutions relying on us, were building a category-defining company at the intersection of AI and information integrity. Our team comes from high-performing engineering cultures, including Meta, Perplexity, AWS, Affi and leading AI research labs, including Princeton, Caltech, and Vector Institute. What We''''re Looking For At GPTZero, we ensure that machine learning models are created for the benefit of humanity, not the other way around. In this role, you''''ll build the next-gen platform to verify the origin, quality, and factuality of the world''''s information. The ideal candidate is someone who has a history of ML research, possesses a great product sense, and is also an excellent software engineer. You''''ll be working on a fast-paced team of passionate builders, creating industry-defining software that has attracted over 2M users globally. Past intern projects have been the focus of demos to VCs and state-level policy leaders. Responsibilities Design, train, and fine-tune state-of-theart large language models Develop AI agents combined with retrievalaugmented language models Build efficient and scalable ML training and inference systems Stay up-todate with the latest literature and emerging technologies to solve novel problems Work closely with product and design teams to develop intuitive applications that create societal impact Qualifications Proficiency in Python and PyTorch Experience pushing or implementing the cuttingedge in machine learning Selfstarter and hungry learner Highly motivated to make positive societal impact Ability to wear multiple hats Visa for work in Canada or US Bonus: strong opensource portfolio publications at toptier ML venues experience working in an earlystage startup environment understanding of how machine learning models fail in the wild Who You''''ll Be Joining You will be working directly with Alex (our CTO) R&D at Uber selfdriving division and Facebook, 3 patents in ML George (our AI research lead) PhD from University of Toronto and exAWS research. Olivia (our head of design) on translating your research into outputs for millions of users. Edward (our CEO, exBellingcat, Microsoft, BBC investigative journalism) to craft the messages we send to our community, and shape the GPTZero brand. Additionally, you will be working with an experienced (eg. exGoogle, Meta, Microsoft, Bloomberg ML, Uber, Vector, MILA), diverse (eg. an engineering team with both Ycombinator and Obama scholarship recipients, a designer with art featured in the Met), and driven (eg. an operator who has scaled a company to 100M+ revenue and is committed to doing it again) group of individuals, described by one investor as one of the strongest founding teams seen in their career. Together, we are committed to making a permanent impact on the future of writing, and on humanity. Our Angels and Advisors Tom Glocer (Legendary Reuters CEO) Mark Thompson (Legendary NYT CEO and current CNN chief executive) Jack Altman (CEO of Lattice, brother of Sam Altman) Karthik Narasimhan (Princeton NLP Professor, coauthor of OpenAIs original GPT paper) Emad Mostaque (CEO of Stability AI) Doug Herrington (CEO of Worldwide Amazon Stores) Brad Smith (President of Microsoft) Tripp Jones (Partner at Uncork Capital) Ali Partovi (cofounder of Code.org, early investor in Dropbox and Airbnb) Russ Heddleston (CEO of Docsend) Alex Mashrabov (Snapchat, Director of AI) Faizan Mehdi (Affinity, Director of Demand Generation) Our Perks Health, dental, and mental health benefits Hybrid work in Toronto and NYC offices Competitive salary Flexible PTO Regular company retreats Mentorship opportunities with our worldclass team, advisors, and investors Wellness and learning stipend At GPTZero, our recruiting team is involved in every step of the hiring process. We use AIbased tools (such as Endorsed.ai and Juicebox.ai) to help us to accelerate candidates at the resume review stage by marking when candidates met certain key criteria. These tools are never the final say in a hiring decision - humans are. #J-18808-Ljbffr