Senior Fullstack Engineer @ GPTZero | $140k - $210k + Equity

Our client is a fast-growing technology company building a leading AI-detection and content verification platform that helps organizations distinguish between human-written and AI-generated text. Using proprietary models fine-tuned on diverse writing styles, the platform analyzes content at the sentence, paragraph, and document level to provide clear, interpretable results.

Their tools are trusted by millions of users across education, publishing, legal, recruitment, cybersecurity, and media. Core features include a browser extension for real-time detection, dashboard batch processing, API integrations, and visual highlighting of AI-detected text. By combining machine learning, experimentation systems, and intuitive UIs, the platform empowers users to uphold content authenticity, protect intellectual property, and combat AI-driven misinformation.

They are expanding their New York team with experienced engineers who thrive in fast-moving environments, embrace responsibility, and are motivated by growth. In this role, you’ll work on high-impact features such as experimentation platforms and in-app notification systems, directly influencing user engagement and company growth. Their environment blends startup energy with engineering rigor—weekly hackathons, regular offsites, and a close-knit, collaborative team culture.