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Contract Data Annotation Jobs in California (NOW HIRING)

This is a 4 months contract opportunity paying $25/hour. Sama will offer a Driver Incentive Program ... We're experts in data annotation, supporting text, 2D, 3D image, video, and sensor data for machine ...

This is a 4 months contract opportunity paying $25/hour. Sama will offer a Driver Incentive Program ... We're experts in data annotation, supporting text, 2D, 3D image, video, and sensor data for machine ...

Technical Program Manager III

Mountain View, CA · On-site

$152K - $197K/yr

Onsite Contract Duration: 12 months Summary: The Client's R&D Operations Organization is seeking a ... Strong understanding of ML development workflows, data pipelines, and annotation lifecycle.

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Contract Data Annotation information

What is the difference between Contract Data Annotation vs Data Labeler?

AspectContract Data AnnotationData Labeler
CredentialsBasic computer skills, attention to detailBasic computer skills, attention to detail
Work EnvironmentRemote or on-site, project-basedRemote or on-site, task-based
Industry UsageAI/ML training, tech companiesAI/ML training, tech companies
Job FocusAnnotating data for machine learning modelsLabeling data to improve AI algorithms

Contract Data Annotation involves completing specific annotation projects for AI training, often on a contractual basis. Data Labelers focus on labeling data to enhance machine learning models, typically performing similar tasks. Both roles require attention to detail and are used in AI/ML industries, but Contract Data Annotation emphasizes project-based work with defined deliverables.

What is a contract data annotation?

A contract data annotation job involves labeling or tagging data—such as images, text, audio, or video—according to specific guidelines, usually on a temporary or project-based contract. These annotations help train machine learning models by providing accurate, human-labeled examples for algorithms to learn from. Contract workers are typically hired for a set period or project and may work remotely or on-site, depending on the employer. The work requires attention to detail, adherence to quality standards, and sometimes familiarity with specialized annotation tools.

What are the key skills and qualifications needed to thrive as a contract data annotation specialist?

To thrive as a Contract Data Annotation Specialist, you need a keen eye for detail, strong analytical skills, and familiarity with data labeling standards, often supported by experience in data management or related fields. Proficiency with annotation platforms (such as Labelbox, Prodigy, or CVAT) and basic knowledge of data formats like JSON or XML are commonly required. Excellent communication, time management, and the ability to work independently help individuals excel in this often remote and deadline-driven role. These skills ensure high-quality, accurate data annotations that are vital for training reliable machine learning models.

What are some common challenges faced by contract data annotation professionals, and how can they be effectively managed?

Contract data annotation professionals often encounter challenges such as maintaining consistency in labeling, managing tight project deadlines, and ensuring data privacy. These challenges can be effectively managed by following detailed annotation guidelines, utilizing collaborative tools for team communication, and participating in regular quality assurance checks. Staying organized and proactive about seeking clarification from project leads also helps ensure high-quality, accurate results and a smooth workflow.

What are the most commonly searched types of Data Annotation jobs in California?

The most popular types of Data Annotation jobs in California are:

What are popular job titles related to Contract Data Annotation jobs in California?

For Contract Data Annotation jobs in California, the most frequently searched job titles are:

What job categories do people searching Contract Data Annotation jobs in California look for?

The top searched job categories for Contract Data Annotation jobs in California are:

What cities in California are hiring for Contract Data Annotation jobs?

Cities in California with the most Contract Data Annotation job openings:

Infographic showing various Contract Data Annotation job openings in California as of August 2026, with employment types broken down into 1% As Needed, 82% Full Time, 12% Part Time, 2% Temporary, and 3% Contract. Highlights an 86% Physical, 4% Hybrid, and 10% Remote job distribution.

Sr. Software Analyst, Annotation Strategy, Autonomy

Rivian

Palo Alto, CA • On-site

$98K - $124K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 24 days ago


Rivian rating

7.3

Company rating: 7.3 out of 10

Based on 159 frontline employees who took The Breakroom Quiz

19th of 44 rated automakers


Job description

About Rivian

Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract. 

As a company, we constantly challenge what’s possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it for future generations. 


Role Summary

In this role, you will lead strategic planning and coordination of 3D/2D annotation

projects, working closely with both internal and external partners. A key responsibility is

rigorous vendor management, ensuring the quality of deliverables, resolving defects,

and facilitating feature enhancements. Furthermore, the role encompasses developing

policies, setting precise labeling protocols, executing accurate 3D sensor data

annotation, and conducting thorough quality control on all generated datasets. You will

partner closely with Annotation Operations, Perception, and Engineering teams to

ensure data readiness for model training and evaluation.

The ideal candidate is data-driven, detail-oriented, and execution-focused, with a strong

understanding of annotation workflows and a passion for improving data quality and

efficiency at scale. This role plays a critical part in enabling informed decision-making,

continuous process improvement, and scalable annotation operations across internal

teams and external vendors.


Responsibilities

Analyzing Data Insights

Analyze large-scale 2D/3D annotation datasets to identify data gaps, quality
issues, coverage gaps, and inefficiencies impacting Perception and ML training.
Utilize dashboards and reports to monitor:
Annotation throughput, efficiency, and cost
Quality metrics (QA pass rates, error types, rework)
Vendor and annotator performance trends
Interpret complex annotation and perception data into clear, actionable insights
for engineering, annotation operations, and leadership.
Partner with Perception teams to align data readiness metrics with model training
and evaluation needs.
Effectively communicate data findings to business partners, bridging the gap
between technical data and strategic organizational goals.

Annotation Operations & Quality
Assess the level of effort for annotation projects and support end-to-end
execution, including in-house vs. vendor decisions.
Collaborate with stakeholders to gather labeling requirements and define,
maintain, and evolve labeling policies.
Manage relationships with various vendors, including contract and quote review,
for third-party annotation services and tools.
Define and track annotation quality, productivity, and certification metrics;
continuously refine benchmarks.
Conduct QA/QC analysis on annotated data, identify systemic issues, and
provide structured feedback to annotators and vendors.
Implement and measure labeling efficiency improvements, using data to validate
impact.

Process Improvement & Automation
Prepare technical reports and collaborate with cross-functional engineering
teams to ensure consistent process implementation, with the ability to automate
basic processes.
Identify opportunities to make data delivery and annotation workflows faster,
more accurate, and scalable.
Identify and propose enhancements to address deficiencies in existing tooling,
improving the efficiency and accuracy of annotation workflows.

Cross-Functional & Vendor Collaboration
Work closely with Annotation Ops, Perception, and Engineering teams to ensure
consistent process implementation.
Support vendor management by analyzing performance, cost, and quality metrics
across multiple annotation partners.
Prepare technical and operational reports to support planning, execution, and
decision-making.
Coordinate across teams and time zones to ensure alignment and timely delivery.


Qualifications

Required
BS degree in a technical or related field with 2+ years of relevant experience (or
5+ years equivalent industry experience).
2+ years supporting data annotation, ML data, or labeling-related projects.
Strong understanding of 2D/3D data annotation workflows for ML and Perception
use cases.

Experience with error taxonomy development and quality assurance (QA)
frameworks for data annotation.
Working knowledge of databases and/or data visualization tools.
Experience analyzing LiDAR point clouds, video, and image annotation data.
Ability to manage multiple projects, prioritize effectively, and deliver under tight
timelines.
Strong written and verbal communication skills, with the ability to explain project
insights to non-technical stakeholders.
Experience mentoring or guiding junior team members or offshore teams.

Nice to Have
Experience building or improving operational analytics for efficiency, cost, or
quality.
Comfort working in a fast-paced, cross-functional, and collaborative environment.
Hands-on experience with data analysis, metrics tracking, and dashboarding.


Pay Disclosure
The salary range for this role is $132,100.00 - $165,100.00 for San Francisco Bay Area based applicants. This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. An employee’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, geographic location, shift, and organizational needs.

We offer a comprehensive package of benefits for full-time and part-time employees, their spouse or domestic partner, and children up to age 26, including but not limited to paid vacation, paid sick leave, and a competitive portfolio of insurance benefits including life, medical, dental, vision, short-term disability insurance, and long-term disability insurance to eligible employees. You may also have the opportunity to participate in Rivian’s 401(k) Plan and Employee Stock Purchase Program if you meet certain eligibility requirements. Full-time employee coverage is effective on their first day of employment. Part-time employee coverage is effective the first of the month following 90 days of employment. More information about benefits is available at rivianbenefits.com.



Equal Opportunity

Rivian is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, ancestry, sex, sexual orientation, gender, gender expression, gender identity, genetic information or characteristics, physical or mental disability, marital/domestic partner status, age, military/veteran status, medical condition, or any other characteristic protected by law.

Rivian is committed to ensuring that our hiring process is accessible for persons with disabilities. If you have a disability or limitation, such as those covered by the Americans with Disabilities Act, that requires accommodations to assist you in the search and application process, please email us at candidateaccommodations@rivian.com.

Candidate Data Privacy and Technology

Rivian may collect, use and disclose your personal information or personal data (within the meaning of the applicable data protection laws) when you apply for employment and/or participate in our recruitment processes (“Candidate Personal Data”). This data includes contact, demographic, communications, educational, professional, employment, social media/website, network/device, recruiting system usage/interaction, security and preference information. Rivian may use your Candidate Personal Data for the purposes of (i) tracking interactions with our recruiting system; (ii) carrying out, analyzing and improving our application and recruitment process, including assessing you and your application and conducting employment, background and reference checks; (iii) establishing an employment relationship or entering into an employment contract with you; (iv) complying with our legal, regulatory and corporate governance obligations; (v) recordkeeping; (vi) ensuring network and information security and preventing fraud; and (vii) as otherwise required or permitted by applicable law. 

Rivian may share your Candidate Personal Data with (i) internal personnel who have a need to know such information in order to perform their duties, including individuals on our People Team, Finance, Legal, and the team(s) with the position(s) for which you are applying; (ii) Rivian affiliates; and (iii) Rivian’s service providers, including providers of background checks, staffing services, and cloud services. 

Rivian may transfer or store internationally your Candidate Personal Data, including to or in the United States, Canada, the United Kingdom, and the European Union and in the cloud, and this data may be subject to the laws and accessible to the courts, law enforcement and national security authorities of such jurisdictions.  

How We Use AI in Our Hiring Process: To ensure transparency, we want candidates to know that Rivian uses iCIMS Talent Cloud Artificial Intelligence (TCAI) and AI-enabled tools to assist with screening, reviewing, organizing and highlighting profiles and applications that match the key requirements for each role.

AI does not make hiring decisions: Qualified candidate applications are reviewed by a member of our team, and all decisions throughout the process are made by humans. We use AI to support efficiency and consistency, not to replace human judgment. We are committed to a fair, thoughtful, and equitable experience for every candidate.
 

Participation in AI profile matching is entirely voluntary. If you prefer that your profile not be used in this process, you can opt out at any time. Opting out means your profile will be excluded from automated matching and will not be surfaced for additional roles through this system. Your current application remains active and will not be affected in any way.

Please note that we are currently not accepting applications from third party application services.

Qualifications:

Required
BS degree in a technical or related field with 2+ years of relevant experience (or
5+ years equivalent industry experience).
2+ years supporting data annotation, ML data, or labeling-related projects.
Strong understanding of 2D/3D data annotation workflows for ML and Perception
use cases.

Experience with error taxonomy development and quality assurance (QA)
frameworks for data annotation.
Working knowledge of databases and/or data visualization tools.
Experience analyzing LiDAR point clouds, video, and image annotation data.
Ability to manage multiple projects, prioritize effectively, and deliver under tight
timelines.
Strong written and verbal communication skills, with the ability to explain project
insights to non-technical stakeholders.
Experience mentoring or guiding junior team members or offshore teams.

Nice to Have
Experience building or improving operational analytics for efficiency, cost, or
quality.
Comfort working in a fast-paced, cross-functional, and collaborative environment.
Hands-on experience with data analysis, metrics tracking, and dashboarding.

Education:UNAVAILABLEEmployment Type: FULL_TIME

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Pay

Benefits

Hours and flexibility

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About Rivian

Sourced by ZipRecruiter

Rivian is a pioneering automotive industry player headquartered in Irvine, California. Established in 2009, the company has made notable advancements in developing sustainable transportation solutions. It is widely recognized for its electric adventure vehicles: the R1T pickup and the R1S SUV. Rivian is dedicated to creating a positive shift in societal mobility and emphasizes sustainability, innovation, and adventure as part of its core values. Their mission is to keep the world adventurous forever - a testament to their commitment in transitioning the world to sustainable transportation. Rivian's achievements are numerous, with one of the most notable being securing a significant multi-billion dollar investment from Amazon for the production of electric delivery vans.

Industry

Automobile dealers

Company size

10,000+ Employees

Headquarters location

Irvine, CA, US

Year founded

2009