Nikolai Liubimov is the Co-founder and CTO of HumanSignal, the company behind Label Studio, where he leads the development of data-centric tooling that powers machine learning workflows across industry and research. With a PhD in computer science and over a decade building speech, language, and deep learning systems at companies like Yandex and Huawei, he has deep experience in designing scalable human-in-the-loop infrastructure. His work focuses on bridging the gap between human judgment and AI automation - building annotation, data creation, and curation platforms that enable teams to train safer, more reliable, and more performant models.