Senior Software Engineer - Expert Data Collection Platform

About Snorkel At Snorkel, we believe meaningful AI doesn’t start with the model, it starts with the data. We’re on a mission to help enterprises transform expert knowledge into specialized AI at scale. The AI landscape has gone through incredible changes since 2015, when Snorkel started as a research project in the Stanford AI Lab, to the generative AI breakthroughs of today. But one thing has remained constant: the data you use to build AI is the key to achieving differentiation, high performance, and production-ready systems. We work with some of the world’s largest organizations to empower scientists, engineers, financial experts, product creators, journalists, and more to build custom AI with their data faster than ever before. Excited to help us redefine how AI is built? Apply to be the newest Snorkeler! Senior Full Stack Engineer About the Team As a Senior Full Stack Engineer at Snorkel, you’ll deliver robust features that power our Expert Data Collection Platform , a critical engine for high-quality ML development. You will build end-to-end capabilities that enable domain experts to provide high-signal data for training and refining state-of-the-art models. Using a combination of strong programming skills and a creative, user-focused mindset, you will have full ownership and responsibility for building, shipping, and maintaining innovative new functionality across the stack that bridges the gap between human expertise and machine learning. About the Role Design and develop key interfaces for our expert data collection workflows, focusing on high-efficiency labeling, data analysis, and sophisticated visualization tools. Prototype, optimize, and maintain scalable services to power complex data collection pipelines and expert-in-the-loop workflows. Build proactively with empathy for both our customers and the subject matter experts using our tools, constantly iterating to balance innovative research with practical solutions. Engage with product managers, designers, and ML experts to create a phenomenal user experience for data acquisition and refinement. Collaborate with engineers to bring consistency and high standards to codebases, infrastructure, and processes. Work a hybrid schedule with three days per week in our Redwood City HQ or the SF office. About You 6+ years of professional full-stack experience developing performant, intuitive, and scalable web application architectures. Experience developing and shipping enterprise software products , specifically those focused on data collection, annotation, or machine learning applications. Experience prototyping and iterating on user interfaces with modern React (ES7+, React hooks, TypeScript). Expertise designing REST APIs for internal services and developers. Ability to work in a fast-paced environment with strong technical communication skills. Self-motivation , a positive mental attitude, and an eagerness to learn in the rapidly evolving AI landscape. Actual compensation will be determined based on factors including skills, qualifications, experience, and geographic location. Salary range(s) for this role $190,000 — $240,000 USD Be Your Best at Snorkel Joining Snorkel AI means becoming part of a company that has market proven solutions, robust funding, and is scaling rapidly—offering a unique combination of stability and the excitement of high growth. As a member of our team, you’ll have meaningful opportunities to shape priorities and initiatives, influence key strategic decisions, and directly impact our ongoing success. Whether you’re looking to deepen your technical expertise, explore leadership opportunities, or learn new skills across multiple functions, you’re fully supported in building your career in an environment designed for growth, learning, and shared success. Snorkel AI is proud to be an Equal Employment Opportunity employer and is committed to building a team that represents a variety of backgrounds, perspectives, and skills. Snorkel AI embraces diversi