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Data Rater Jobs in California (NOW HIRING)

Cloud Data Engineer

Napa, CA · On-site

$115K - $151K/yr

... rates, low or no fees, and best-in-class customer service. Our purpose is to inspire hope and ... Data Factory, Databricks, Data Lake Storage, SQL DW, Analysis Services, and API - PySpark. * ETL ...

Job Title Data Engineer Client Confidential Location Los Angeles, CA (5 days - Onsite) Type of Hire Long Term Contract Rate $60/hr. on W2 * Serve as developer of key DTC analytical models like ...

Senior Data Analyst, Commerce

Palo Alto, CA · On-site +1

$101K - $127K/yr

Director Data Science + Analytics About Midi Health: Midi Health is the fastest-growing virtual ... Create reporting around Turnaround Time (TAT), notification SLAs, and order defect / refund rates.

Back-End Data Engineer

San Bruno, CA · On-site

$136K - $164K/yr

San Bruno, CA Duration: 6 to 12+ months Rate: DOE Duties: Looking for a backend data engineer with Apache Sprak, Hive and Airflow knowledge. Must-haves Excellent knowledge with SQL and Hive (HiveQL ...

Lead bioinformatic and data science efforts focused on singlecell RNAseq (scRNAseq) data, including ... The annual base pay (or hourly rate of compensation) for this position ranges from $ 92,252.00 ...

Key Responsibilities Lead bioinformatic and data science efforts focused on singlecell RNAseq ... The annual base pay (or hourly rate of compensation) for this position ranges from $ 92,252.00 ...

Lead bioinformatic and data science efforts focused on singlecell RNAseq (scRNAseq) data, including ... The annual base pay (or hourly rate of compensation) for this position ranges from $ 92,252.00 ...

Data Engineer

Sunnyvale, CA · On-site

$134K - $161K/yr

Sunnyvale, CA Duration: 6 to 12+ Months Rate: DOE Client Note: 1. Experience building and maintaining large scale data pipelines in online advertising, recommender system, search, e-commerce or ...

Key Responsibilities Lead bioinformatic and data science efforts focused on singlecell RNAseq ... The annual base pay (or hourly rate of compensation) for this position ranges from $ 92,252.00 ...

Data Scientist

Mountain View, CA · On-site +1

$170K - $216K/yr

Develop novel statistical methods to handle unique aspects of AV data; e.g. rate estimation with rare events, combining real and synthetic data, etc. * Frame and solve ambiguous problems, derive data ...

Data Scientist

Mountain View, CA · On-site

$170K - $216K/yr

Develop novel statistical methods to handle unique aspects of AV data; e.g. rate estimation with rare events, combining real and synthetic data, etc. * Frame and solve ambiguous problems, derive data ...

Data Scientist

San Francisco, CA · On-site +1

$170K - $216K/yr

Develop novel statistical methods to handle unique aspects of AV data; e.g. rate estimation with rare events, combining real and synthetic data, etc. * Frame and solve ambiguous problems, derive data ...

Responsibilities: • Manage data analytics projects to support KPMG's Talent & Culture function ... The pay rate range(s) displayed is/are specifically for those contracted who will perform work in ...

Data Engineer

Sunnyvale, CA · On-site

$134K - $161K/yr

Data Engineer LOCATION:Sunnyvale CA Duration: 6 to 12+ Months Rate: DOE Description: Designs, develops, and implements Hadoop eco-system based applications to support International Search Team ...

Define and track inter-rater reliability, error rates by category, and annotator-level performance ... Experience in AI/ML data operations or evaluation pipelines * Background in audio, speech, or ...

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Data Rater information

See California salary details

$9

$27

$72

How much do data rater jobs pay per hour?

As of Jun 6, 2026, the average hourly pay for data rater in California is $27.83, according to ZipRecruiter salary data. Most workers in this role earn between $14.83 and $31.31 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Data Rater, and why are they important?

To thrive as a Data Rater, you need strong analytical abilities, attention to detail, and proficiency in following detailed guidelines, often requiring at least a high school diploma or equivalent. Familiarity with web-based evaluation tools, spreadsheets, and sometimes proprietary rating platforms is typically expected. Excellent time management, critical thinking, and effective written communication are valuable soft skills for excelling in this role. These skills ensure accurate and consistent data evaluation, which directly impacts the quality and effectiveness of machine learning models and search algorithms.

What are some common challenges Data Raters face, and how can they effectively manage them?

Data Raters often encounter challenges such as maintaining consistency in their evaluations, understanding complex guidelines, and managing repetitive tasks. To effectively handle these, it's important to regularly review guideline updates, seek clarification from team leads when unsure, and use productivity techniques to stay focused during long periods of rating. Collaborating with peers through forums or team meetings can also help share best practices and resolve ambiguities.

What is the difference between Data Rater vs Data Annotator?

AspectData RaterData Annotator
Required CredentialsHigh school diploma or equivalent; some roles may require basic technical skillsHigh school diploma; some roles may prefer familiarity with annotation tools
Work EnvironmentRemote or office-based; often involves reviewing data for qualityRemote or office-based; involves labeling or tagging data for machine learning
Employer & Industry UsageTech companies, data services, AI firmsAI and machine learning companies, data labeling services

Data Raters primarily review and assess data quality, ensuring accuracy and consistency, while Data Annotators focus on labeling data to train machine learning models. Both roles are essential in AI development, often sharing similar skills and work environments, but differ in their specific tasks and objectives.

What are Data Raters?

Data Raters are professionals who evaluate and provide feedback on data, such as search engine results, advertisements, and social media content, to help improve the accuracy and relevance of algorithms. They often work with large tech companies to assess whether content meets specific quality guidelines and user intent. Data Raters typically work remotely on a part-time or flexible schedule, and their work is crucial in training artificial intelligence systems to better understand human preferences.
What are the most commonly searched types of Data Rater jobs in California? The most popular types of Data Rater jobs in California are:
Infographic showing various Data Rater job openings in California as of May 2026, with employment types broken down into 1% As Needed, 89% Full Time, and 10% Part Time. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution, with an average salary of $57,878 per year, or $27.8 per hour.
Data Scientist, D2C Data Science

Data Scientist, D2C Data Science

PlayStation Global

San Diego, CA • On-site

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 3 days ago


Job description

Why Sony Interactive Entertainment?
Sony Interactive Entertainment isn't just the Best Place to Play - it's also the Best Place to Work. Sony Interactive Entertainment (SIE) is the company behind the PlayStation brand. As a subsidiary of Sony Group Corporation, we're part of a proud legacy of innovation and excellence. SIE is a dynamic technology company, delivering cutting-edge hardware and network services to more than 100 million people and an entertainment leader, home to some of the most beloved and recognizable intellectual properties (IP) in the world. Our role at SIE is to create and nurture the experiences under the PlayStation brand, a name synonymous with entertainment excellence and creativity.
Data Scientist, D2C Data Science
San Diego, CA (Hybrd)
About the Team
The Direct to Consumer (D2C) Data Science organization brings together Data Science, Data Engineering, and ML Engineering to support PlayStation's digital business across commerce, payments, subscriptions, lifecycle experiences, and player-facing services. We partner closely with product, engineering, finance, marketing, operations, and data teams to turn experimentation, forecasting, modeling, and production-quality measurement into better decisions and better player experiences.
About The Role
We are looking for a Data Scientist to join a focused team within D2C Data Science supporting payment and subscription experiences across PlayStation's direct-to-consumer business. This is a hands-on role for someone who can use statistics, machine learning, experimentation, and strong data judgment to help teams make better decisions about how players pay, subscribe, and move through global payment flows.
The initial portfolio is expected to focus on payment method performance, payment flow optimization, subscription payment recovery, and ROI-based evaluation of experiments and business interventions. You will help teams understand customer behavior, payment success, cost and routing tradeoffs, and the business impact of new payment capabilities.
Our team values practical scientific rigor: clear decision framing, trusted reusable metrics, transparent uncertainty, and recommendations that help teams move faster without sacrificing measurement quality. This role is best suited for someone who can independently own well-scoped analyses and models, work through ambiguity, and translate complex data into recommendations that improve customer experience and business performance.
Responsibilities
  • Apply data science methods to high-impact questions across D2C payments, subscriptions, commerce, lifecycle, and player experience.
  • Design, analyze, and interpret A/B tests, holdouts, quasi-experimental analyses, and other measurement approaches with clear hypotheses, metrics, and decision criteria.
  • Analyze payment and subscription outcomes such as payment success, authorization performance, payment funnel behavior, routing or retry performance, cost tradeoffs, and subscription recovery.
  • Build statistical and machine learning models for forecasting, segmentation, propensity, retention, payment success, payment optimization, subscription outcomes, or offer performance.
  • Use SQL and Python to prepare data, validate assumptions, analyze behavior, and produce reproducible analytical workflows.
  • Partner with product, engineering, finance, marketing, operations, and data engineering teams to ensure analyses are technically sound, actionable, and operationally useful.
  • Communicate findings with clear recommendations, confidence levels, caveats, tradeoffs, next steps, and reusable documentation that supports better decision-making.

Basic Qualifications
  • 3+ years of professional experience in data science or machine learning
  • Bachelor's degree in statistics, mathematics, computer science, engineering, data science, or a related quantitative field or equivalent
  • Strong SQL and Python skills for data extraction, data validation, analysis, modeling, and reproducible workflows.
  • Solid foundation in statistics, experimental design, machine learning, predictive modeling.
  • Experience applying data science methods to ambiguous commercial, customer, payment, subscription, or operational problems.
  • Ability to communicate technical findings clearly to technical and non-technical partners.

Preferred Qualifications
  • Experience with digital commerce, payments, billing, subscriptions, fintech, marketplaces, gaming, media, or scaled consumer technology businesses.
  • Experience with payment method performance, authorization or success-rate analysis, payment optimization, routing or retry strategies, cost analysis, payment telemetry, or subscription recovery.
  • Experience designing, running, or analyzing experiments, including A/B tests, holdouts, quasi-experimental approaches, or causal inference methods.
  • Experience with forecasting, customer segmentation, churn / retention modeling, offer measurement, payment success modeling, subscription lifecycle analytics, or ROI-based business evaluation.
  • Experience working with large-scale data environments such as Snowflake, Databricks, Spark, BigQuery, or similar platforms, and familiarity with metric layers or source-of-truth datasets.

At SIE, we consider several factors when setting each role's base pay range, including the competitive benchmarking data for the market and geographic location.
Please note that the base pay range may vary in line with our hybrid working policy and individual base pay will be determined based on job-related factors which may include knowledge, skills, experience, and location.
In addition, this role is eligible for SIE's top-tier benefits package that includes medical, dental, vision, matching 401(k), paid time off, wellness program and coveted employee discounts for Sony products. This role also may be eligible for a bonus package. Click here to learn more.
The estimated base pay range for this role is listed below.
$143,400-$215,000 USD
Please note, Sony Interactive Entertainment conducts background checks at the offer stage for all new employees (which may include criminal background checks for some roles) and will need to process personal information to support these checks.
Please refer to our Candidate Privacy Notice for more information about what personal information we collect, how we use it, who we share it with, and your data protection rights.
Equal Opportunity Statement:
Sony is an Equal Opportunity Employer. All persons will receive consideration for employment without regard to gender (including gender identity, gender expression and gender reassignment), race (including colour, nationality, ethnic or national origin), religion or belief, marital or civil partnership status, disability, age, sexual orientation, pregnancy, maternity or parental status, trade union membership or membership in any other legally protected category.
We strive to create an inclusive environment, empower employees and embrace diversity. We encourage everyone to respond.
Sony Interactive Entertainment is a Fair Chance employer and qualified applicants with arrest and conviction records will be considered for employment.