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49 data annotator jobs at 24 companies in San Francisco, CA

2d
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Croatian Speaker-Data Annotator
San Francisco or Seattle or New York City
$34/hr OnsiteFull Time
Welocalize
Welocalize: Provides AI training data and multilingual localization services.
1+ YOENative-level Croatian, strong written communication, 1 year data labeling/annotation experience or Bachelor's degree, authorized to work in the U.S.; ability to follow detailed guidelines for audio and language data.
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2mo
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Video Data Annotator - Contract
San Francisco, California, United States
$25/hr OnsitePart Time
Hooglee
Hooglee: AI-powered video generation and social networking platform.
Part-time on-site role in San Francisco; 10-week contract; $25/hour; strong English and attention to detail required.
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1mo
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Data Annotation Lead
Redwood City, California, United States
OnsiteFull Time
Sunday
Sunday: Developing autonomous robots to perform household chores.
Experience building and leading data annotation teams, strong written/verbal communication, stakeholder management, prioritization, intermediate ML understanding, and ability to create documentation and annotation processes.
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2w
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Data Annotation Analyst
San Francisco, California, United States
$71k-$89k/yr OnsiteFull Time
Atoms
Atoms: Building specialized industrial robots and physical AI systems.
Experience labeling or quality-controlling ML training data, managing remote labelers, familiarity with annotation platforms, CLI tools preferred, spreadsheet/BI dashboards, and Git or ticketing tools.
command-line interface, annotation platforms, spreadsheet tools, BI dashboards, Git
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2w
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Data Annotation Analyst
San Francisco, California, United States
$71k-$89k/yr OnsiteFull Time
Atoms
Atoms: Building robotics and software to automate physical world industries.
Experience labeling or performing quality control for ML training data; familiarity with annotation platforms, CLI tools, spreadsheets/BI dashboards, and version control; strong communication and attention to detail.
Git
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2mo
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Clinical Data Abstractor
San Francisco, California, United States
$80k-$100k/yr RemoteFull Time
Citizen Health
Citizen Health: AI-powered patient advocate and research platform for rare diseases.
2+ YOE2+ years clinical care in rare genetic disorders; licensed clinician (RN/NP/PA/Genetic Counselor); strong collaboration; HIPAA knowledge; data annotation experience.
HIPAA compliant software, Healthcare data annotation tools
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3d
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Machine Learning Data Engineer (DataOps), Materra
Mountain View, California, United States
$166k-$244k/yr OnsiteFull Time
X, The Moonshot Factory
X, The Moonshot FactoryNASDAQ: GOOGL: Develops early-stage technologies and experimental projects.
3+ YOE3+ years building scalable data pipelines, strong Python and SQL skills, experience with data validation, dataset versioning, and ML data lifecycle for annotation and training.
Python, Pandas, NumPy, SQL, BigQuery, Cloud Storage, Dataflow, Dataproc, Vertex AI Data Pipelines, Google Cloud Composer, Apache Airflow, Prefect, Dagster, Great Expectations, DVC, TFX, Data Validation
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1mo
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Senior Annotation and Data Pipeline Manager
San Carlos, California, United States
OnsiteFull Time
Genesis AI
Genesis AI: Building general-purpose robots with human-level physical intelligence.
4+ YOE4+ years in data or ML pipelines including leadership; strong Python (Pandas, NumPy, PyTorch) and SQL; experience scaling annotation/labeling operations; ML literacy and hands-on technical leadership.
Python, Pandas, NumPy, PyTorch, SQL
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1mo
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AI Data Expert - Spanish (US) - Remote
San Francisco or United States
RemoteContract
Lilt
Lilt: AI-powered platform for enterprise translation and content generation.
Native Spanish fluency, strong attention to detail, able to review and annotate textual and audio/video content, follow detailed guidelines, prior AI reviewer/annotator experience preferred.
SuperAnnotate
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1mo
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Data Annotation Lead
San Francisco, California, United States
OnsiteFull Time
Physical Intelligence
Physical Intelligence: Creating foundation models for general-purpose robot intelligence.
7+ YOE3+ Mgmt7+ years leading scaled data/annotation operations, 3+ years managing managers, experience scaling 100s→1,000s, building training/certification pipelines, integrating autolabeling/HITL workflows, and driving operational quality metrics.
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Agentic Data Understanding
San Francisco or New York City
OnsiteFull Time
Bedrock Robotics
Bedrock Robotics: Automates heavy construction machinery with AI retrofit kits.
8+ YOE8+ years in ML/data engineering or applied AI with production annotation/labeling systems, strong Python skills, pipeline and model-inference experience, familiarity with 2D/3D annotation modalities, metrics and cross-functional collaboration.
Python, VLMs, LLMs, LiDAR, IMU, cameras
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1mo
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ML Evaluation Specialist, Human Data
Cupertino, California, United States
OnsiteFull Time
Apple
AppleNASDAQ: AAPL: Designs and sells consumer electronics, software, and online services.
Owning operational strategy for large-scale multilingual human data programs, designing annotator onboarding, analyzing annotator behavior, building automation and feedback systems, and enforcing quality frameworks across cross-functional teams.
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2mo
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Data Annotation Specialist
Redwood City, California, United States
$32/hr OnsiteContract
Dyna Robotics
Dyna Robotics: Develops general-purpose robots powered by proprietary embodied AI models.
Associate’s or Bachelor’s degree (or equivalent); strong attention to detail; follow detailed instructions; work independently; clear written communication.
Video annotation tools, COCO format, YOLO format, MOT/KITTI knowledge, Pre-annotation/autolabeling tools
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2mo
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Language Engineer, Artificial General Intelligence - Data Services
Boston or Bellevue or Sunnyvale
OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
2+ YOEExperience in language annotation, scripting (Python, KornShell), multilingual data, and computational linguistics; 2+ years in language data processing; Masters or higher.
Python, KornShell, SQL, R, Matlab
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1mo
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Data Collection Operator
San Francisco or Irvine
$29/hr OnsiteFull Time
ALTEN
ALTENEuronext Paris: ATE: Provides engineering and technology consulting services to industrial clients.
Operate robotics platforms and VR teleoperation (Apple Vision Pro), collect motion-capture data, perform basic annotations and QC, run simple terminal commands, write daily reports; good dexterity, vision, and stamina required.
Apple Vision Pro, Terminal
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3w
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Senior AI Data Science Engineer
Sunnyvale, California, United States
$152k-$257k/yr OnsiteFull Time
Intuitive
IntuitiveNASDAQ: ISRG: Robotic-assisted systems for minimally invasive surgery.
3+ YOEMaster's (6+ yrs) or PhD (3+ yrs) in CS/Data Science/EE/Robotics or related; strong Python and SQL; experience building data pipelines for multi-modal surgical/robotics data; data quality and annotation workflow expertise.
Python, SQL, Spark, Airflow, MLFlow, DVC, Weights & Biases, Docker, Kubernetes
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2mo
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Project Perseus | Speech & Voice AI Analyst - Turkish Speakers
New York City or Seattle or Bellevue or Redmond or San Francisco or Sunnyvale or Burlingame or Austin or Los Angeles or Washington or Chicago or Boston
$26-$28/hr OnsiteFull Time
Welocalize
Welocalize: Provides global translation, localization, and AI training data services.
1+ YOETurkish native level; 1 year data labeling/annotation experience or Bachelor’s in a related field; detail-oriented; able to follow guidelines; onsite in specified US locations; authorized to work in the US.
Speech and language data labeling tools
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4d
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视频数据标注 & 评测专家 / 负责人
San Francisco, California, United States
RemoteFull Time
Embedding VC: Venture capital firm backing early-stage generative AI startups.
3+ years in video/image/multimodal annotation or evaluation; hands-on experience designing annotation tasks, QC (gold set, sampling, IAA, reviewer calibration), and collaborating with algorithm teams for badcase feedback; strong process and communication skills.
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3d
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Technical Program Manager, Human Data Annotation (Code)
Paris or Palo Alto or London
HybridFull Time
Mistral AI
Mistral AI: Developing frontier artificial intelligence models and enterprise AI solutions.
5+ YOE5+ years experience combining software engineering and technical program management; strong Python skills, project management, stakeholder communication, team leadership, and experience with data annotation operations.
Python, JavaScript, TypeScript, FastAPI, Django, React
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2w
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Policy & Quality Specialist- ML Perception Data
Mountain View, California, United States
$152k-$160k/yr OnsiteFull Time
Waymo
Waymo: Autonomous driving technology for ride-hailing and logistics.
4+ YOE4+ years in data analysis, operations, or program management with focus on ML data annotation, taxonomy design, or human-in-the-loop workflows; strong analytical and project management skills.
Python, SQL
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