56 data annotator jobs at 25 companies in Redwood City, CA
2w
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Croatian Speaker-Data Annotator
San Francisco or Seattle or New York City
$34/hr OnsiteFull Time
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.
3mo
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Video Data Annotator - Contract
San Francisco, California, United States
$25/hr OnsitePart Time
Part-time on-site role in San Francisco; 10-week contract; $25/hour; strong English and attention to detail required.
2mo
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Data Annotation Lead
Redwood City, California, United States
OnsiteFull Time
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.
3w
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Data Annotation Analyst
San Francisco, California, United States
$71k-$89k/yr OnsiteFull Time
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
3w
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Data Annotation Analyst
San Francisco, California, United States
$71k-$89k/yr OnsiteFull Time
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
2mo
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Clinical Data Abstractor
San Francisco, California, United States
$80k-$100k/yr RemoteFull Time
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
2w
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Machine Learning Data Engineer (DataOps), Materra
Mountain View, California, United States
$166k-$244k/yr OnsiteFull Time
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
1mo
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Senior Annotation and Data Pipeline Manager
San Carlos, California, United States
OnsiteFull Time
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
2mo
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AI Data Expert - Spanish (US) - Remote
San Francisco or United States
RemoteContract
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
1mo
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Data Annotation Lead
San Francisco, California, United States
OnsiteFull Time
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.
1mo
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Agentic Data Understanding
San Francisco or New York City
OnsiteFull Time
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
1mo
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ML Evaluation Specialist, Human Data
Cupertino, California, United States
OnsiteFull Time
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.
1w
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Driver/Data Annotation Specialist (Contract)
San Francisco or New York City
$25/hr HybridContract
Requires a valid driver's license, data entry or processing experience, strong visual attention, computer proficiency, and ability to commute to the San Francisco office at least twice weekly. Training is provided.
Slack, Google Sheets, Airtable
2mo
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Data Annotation Specialist
Redwood City, California, United States
$32/hr OnsiteContract
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
2mo
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Language Engineer, Artificial General Intelligence - Data Services
Boston or Bellevue or Sunnyvale
OnsiteFull Time
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
1mo
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Data Collection Operator
San Francisco or Irvine
$29/hr OnsiteFull Time
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
1mo
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Senior AI Data Science Engineer
Sunnyvale, California, United States
$152k-$257k/yr OnsiteFull Time
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
6d
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Project Perseus | Speech & Voice AI Analyst- Korean Speakers
California or Sunnyvale or San Francisco or Seattle or Redmond or Burlingame or New York City or Austin or Los Angeles or Washington or Chicago or Boston
$26-$28/hr OnsiteFull Time
1+ YOENative-level Korean fluency, strong written communication, and one year of data labeling, annotation, or content experience, or a related bachelor's degree. Requires detail, consistency, and instruction-following.
AI, NLP
2w
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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.
2w
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Technical Program Manager, Human Data Annotation (Code)
Paris or Palo Alto or London
HybridFull Time
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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