Data Scientist Jobs in California, United States

C3 AI is an Enterprise AI application software company building the C3 Agentic AI Platform and industry-specific SaaS enterprise AI applications. As a member of the C3 AI Data Science team, you will partner with data scientists, AI engineers, and subject matter experts to design, implement, and deploy AI capabilities for enterprise customers on the C3 AI Platform.

Catastrophe Engineering and Analytics (CAT E&A) team at Berkshire Hathaway Specialty Insurance builds advanced risk models for natural and man‑made catastrophes. The Data Scientist develops and applies machine learning, AI, and statistical techniques to large claims, hazard, and geospatial datasets to improve underwriting decisions.

Catastrophe Engineering and Analytics (CAT E&A) team at Berkshire Hathaway Specialty Insurance builds advanced risk models for natural and man‑made catastrophes. The Data Scientist applies machine‑learning, statistical and probabilistic techniques to large claims, hazard and geospatial datasets, developing predictive models and tools that inform underwriting decisions.

DoorDash seeks experienced Data Scientists to lead analytics across multiple teams, driving data‑driven decisions in areas such as customer acquisition, fraud prevention, marketing, and marketplace efficiency. Candidates will design experiments, build dashboards, mentor junior analysts, and collaborate with engineering to implement data solutions.

Strava’s Data Products team sits at the core of the company’s AI strategy, turning community and activity data into reliable, enriched datasets that power user experiences at scale. As a Lead Data Scientist, you will drive the team’s measurement strategy, define evaluation frameworks and offline/online metrics, own experimentation and monitoring for production models, and partner closely with Machine Learning Engineers to scope AI/ML opportunities.

Deepgram is seeking a Senior Data Scientist for its Data Flywheel team to sit at the intersection of research and data, characterizing conversational audio and shaping data strategies that drive model gains. You will build analysis and active-learning loops, design human-in-the-loop workflows, create representative benchmarks, and turn ambiguous data into measurable model improvements.

GTM Data Science & Analytics at Adobe builds growth strategy for Adobe.com B2C, turning customer journey data into actionable insights. The Senior Data Scientist analyzes acquisition, conversion, retention, and churn across the funnel, drives weekly performance reviews, and elevates the team’s technical bar by contributing to shared code libraries.

Deepgram is seeking a Senior Data Scientist, Data Flywheel to sit at the intersection of research and data, focusing on conversational audio and voice AI. You will characterize data, design active-learning loops, build human-in-the-loop workflows, and create benchmarking datasets to drive model improvements. This hands-on role reports to the VP of Data Operations and offers latitude to define areas from first principles.

Multimedia Data Science team at TikTok focuses on optimizing the app experience through data-driven solutions for video on demand content. The Data Scientist Intern will develop experience metrics, conduct experiments, and build models to personalize publishing experiences while collaborating with cross‑functional partners.

Gilead Sciences is seeking a Clinical Data Scientist - RWE Data Analysis Oversight Lead: Inflammation to oversee the timeliness and quality of analysis results supporting the CDS-RWE book of work for the Inflammation therapeutic area. The role reports to the CDS-RWE TA Head, serving as the primary point of contact for study and analysis vendors, planning and executing quality acceptance of analysis deliverables, and shaping TA-level analysis delivery strategy.

TikTok's Product Data Science team in San Jose seeks a Senior Data Scientist to drive product optimization and efficiency. The role involves designing ML strategies, defining success metrics, and analyzing large datasets to identify trends and support business growth.

Socure's Big Data R&D team builds the core identity graph and entity-resolution capabilities powering Deceased Monitoring and compliance products. As a Data Scientist II, you will develop graph-based algorithms and data pipelines on massive PII datasets, support modelers with high-quality features, and evaluate new data sources for identity and fraud products.

Macadam Technology Team builds innovative software solutions and data-driven products. The Jr Java Full Stack Developer/Software Programmer/Data Analyst/Data Scientist will develop Java web applications, design databases, analyze datasets, and create machine learning models to support business decisions.

Data Platform Global Live team at TikTok builds real-time and offline data warehouses and enterprise knowledge systems to power TikTok LIVE. The Research Scientist designs unified knowledge representations, develops RAG-based knowledge layers, and creates ontology and agent-based reasoning to enable LLMs to access and reason over structured and unstructured data.

SageSure, a leading catastrophe-exposed property insurer, seeks a Data Scientist to drive underwriting and risk management solutions. The role involves developing geospatial analytics, machine learning models, and automated tools using Python, SQL, and GIS platforms.

Data Scientist on Structure Therapeutics’ Biometrics and Data Management team, building scalable data science tools to accelerate clinical decision‑making. Day‑to‑day work includes developing production‑grade ML models, validating analytical solutions, and collaborating with clinical scientists and biostatisticians.

Fuse is building a fusion energy company to accelerate the world's transition to fusion energy while safeguarding humankind. As a Data Scientist, you will build an in-house simulation stack that predicts what fusion machines will do and the inference machinery that pulls physics out of shot data.

CodeSignal (Ats) Data Science team builds predictive models and analytics tools to improve hiring assessments. The Data Scientist designs experiments, develops machine learning pipelines, and collaborates with engineering to deploy scalable solutions.

USM Business Systems Inc. Data Science team drives analytics and data-driven solutions for government and enterprise clients. The Data Scientist builds full‑stack automation tools, designs AWS‑based data pipelines, and develops models to extract insights from complex datasets.

Beegenius Data Science Team builds data-driven solutions to shape the future of work. The Data Scientist develops predictive models, cleans and preprocesses large datasets, and extracts actionable insights to inform decisions across the company.