Senior Data Scientist — Individual Contributor

We are hiring a senior individual contributor to join our Data Science team. This is a hands-on role for someone who can take ownership of the full solution, from understanding the problem and building the required data pipelines to developing the model, deploying it, and keeping it reliable in production. You should be comfortable working across data, code, infrastructure, and monitoring independently. The domain is genuinely hard: noisy sensor and telemetry data, weak and delayed labels, enormous scale, and physical systems that fail in complicated ways. We use whatever technique the problem calls for, from classical machine learning and survival analysis to our own patent-pending deep learning architectures and agentic flows already running in production. The team moves quickly and operates with a startup mentality: high ownership, short decision paths, and a strong bias toward action. When we encounter a difficult problem, we do not stop at “we can’t.” We ask, “How can we?” Moving fast does not mean cutting corners. It means combining resourcefulness and practical judgment with scientific rigor, engineering quality, and production reliability. We also have proprietary methods for validating results against ground truth, so the feedback loop is real: when a solution works, it ships. You will see your work in production and understand its impact on real fleets. Questar is a physical AI company building the next generation of vehicle health management. We detect real vehicle problems before they surface, explain what is happening, and recommend exactly what to do, reducing maintenance costs and downtime for commercial fleets. We ingest billions of data points every day from our customers’ vehicles and turn them into a Total Fleet Health solution. Questar is a pioneer in total vehicle health management, serving Tier 1 suppliers, OEMs, leasing companies, service providers, and enterprise fleets. Questar Auto Technologies is an equal opportunity employer. We welcome applicants from all backgrounds and do not discriminate based on race, color, religion, gender, gender identity or expression, sexual orientation, national origin, disability, or age. Powered by JazzHR urCgFQwtYS