

OSI Engineering
Data Annotator Lead
⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a Data Annotator Lead on a 10-month contract in Sunnyvale, CA, offering $85.00 - $100.00/hour. Requires 5+ years in operations/project management, 2+ years in data annotation, and strong AI/ML knowledge. Bachelor’s degree needed.
🌎 - Country
United States
💱 - Currency
$ USD
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💰 - Day rate
800
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🗓️ - Date
April 15, 2026
🕒 - Duration
More than 6 months
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🏝️ - Location
Hybrid
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📄 - Contract
W2 Contractor
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🔒 - Security
Unknown
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📍 - Location detailed
Sunnyvale, CA
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🧠 - Skills detailed
#Data Engineering #Scala #Data Analysis #Project Management #AI (Artificial Intelligence) #ML (Machine Learning) #Quality Assurance #Security #Compliance #Metadata #SQL (Structured Query Language) #Data Quality #Scripting #Python
Role description
A globally leading consumer device company based in Sunnyvale, CA is looking for Data Engineer III to join their team. This individual will regularly collaborate cross-functionally with data collection, annotation, and algorithm development partners. The role serves as the primary point of contact for the scoping, bring-up, and management of multi-discipline data annotation projects within our organization. You will collaborate with vendor annotation leads and the organization managers to lead annotation operation development and execution.
Key Responsibilities:
• Design, develop and optimize annotation workflow and instructions to ensure high-throughput, scalability and accurate annotation
• Partner with engineering teams to define and align on annotation tool requirements
• Establish and enforce rigorous QA/QC processes for annotation accuracy and consistency
• Develop annotation project timeline and ensure the success delivery of annotations
• Track, facilitate, and direct priorities for several concurrent annotation efforts
• Track key performance metrics such as throughput (labels per hour), quality scores, and spend against targets, and provide regular report to stakeholders
• Develop and implement annotation working guidelines to ensure the compliance with organization’s security, privacy, and financial guidelines
• Monitor financial states of purchase orders and budgets to ensure careful spending for uninterrupted service from the vendor
• Drive supply, equipment, and software ordering in coordination with stakeholders
• Find, socialize, and implement program improvements in coordination with stakeholders
• Facilitate project clearances, non-disclosure agreements, and Restricted Project Agreements
• Ensure vendor compliance with statements of work and service level agreements
Minimum Qualifications:
• 5+ years in operations, project management, or data analysis, with at least 2 years specifically in data annotation operations.
• Proven history of success in leading and managing large scale annotations for multimodal data, including, image, video, text, audio, sensor data, metadata, etc.
• Experience with data labeling platforms
• Strong understanding of AI/ML concepts, annotation workflows, and data quality assurance.
• Proven ability to create, maintain, and optimize SOPs for high-volume annotation, improving efficiency and scalability.
• Ability to translate complex technical requirements into clear, easy-to-understand instructions for non-technical staff.
• Experience managing complex, cross-functional projects, often with international or remote teams.
• Familiarity with budget tracking, cost reporting, or operational financial practices.
• A Bachelor’s degree in engineering related fields
Preferred Qualifications:
• Basic knowledge of SQL and/or Python for data querying and scripting.
• Experience with annotation tool and/or AIML model development
Type: Contract
Duration: 10 months with extension
Work Location: Sunnyvale, CA (hybrid)
Pay Rate: $85.00 - $100.00/ph (DOE)
A globally leading consumer device company based in Sunnyvale, CA is looking for Data Engineer III to join their team. This individual will regularly collaborate cross-functionally with data collection, annotation, and algorithm development partners. The role serves as the primary point of contact for the scoping, bring-up, and management of multi-discipline data annotation projects within our organization. You will collaborate with vendor annotation leads and the organization managers to lead annotation operation development and execution.
Key Responsibilities:
• Design, develop and optimize annotation workflow and instructions to ensure high-throughput, scalability and accurate annotation
• Partner with engineering teams to define and align on annotation tool requirements
• Establish and enforce rigorous QA/QC processes for annotation accuracy and consistency
• Develop annotation project timeline and ensure the success delivery of annotations
• Track, facilitate, and direct priorities for several concurrent annotation efforts
• Track key performance metrics such as throughput (labels per hour), quality scores, and spend against targets, and provide regular report to stakeholders
• Develop and implement annotation working guidelines to ensure the compliance with organization’s security, privacy, and financial guidelines
• Monitor financial states of purchase orders and budgets to ensure careful spending for uninterrupted service from the vendor
• Drive supply, equipment, and software ordering in coordination with stakeholders
• Find, socialize, and implement program improvements in coordination with stakeholders
• Facilitate project clearances, non-disclosure agreements, and Restricted Project Agreements
• Ensure vendor compliance with statements of work and service level agreements
Minimum Qualifications:
• 5+ years in operations, project management, or data analysis, with at least 2 years specifically in data annotation operations.
• Proven history of success in leading and managing large scale annotations for multimodal data, including, image, video, text, audio, sensor data, metadata, etc.
• Experience with data labeling platforms
• Strong understanding of AI/ML concepts, annotation workflows, and data quality assurance.
• Proven ability to create, maintain, and optimize SOPs for high-volume annotation, improving efficiency and scalability.
• Ability to translate complex technical requirements into clear, easy-to-understand instructions for non-technical staff.
• Experience managing complex, cross-functional projects, often with international or remote teams.
• Familiarity with budget tracking, cost reporting, or operational financial practices.
• A Bachelor’s degree in engineering related fields
Preferred Qualifications:
• Basic knowledge of SQL and/or Python for data querying and scripting.
• Experience with annotation tool and/or AIML model development
Type: Contract
Duration: 10 months with extension
Work Location: Sunnyvale, CA (hybrid)
Pay Rate: $85.00 - $100.00/ph (DOE)






