

OSI Engineering
Data Annotator Lead
β - Featured Role | Apply direct with Data Freelance Hub
This role is for a Data Annotator Lead on a 10-month contract in Sunnyvale, CA (hybrid), offering $85.00 - $100.00/hour. Requires 5+ years in operations/project management, 2+ years in data annotation, and a Bachelor's in engineering.
π - Country
United States
π± - Currency
$ USD
-
π° - Day rate
800
-
ποΈ - Date
May 27, 2026
π - Duration
More than 6 months
-
ποΈ - Location
Hybrid
-
π - Contract
W2 Contractor
-
π - Security
Unknown
-
π - Location detailed
Sunnyvale, CA
-
π§ - Skills detailed
#Security #Data Analysis #AI (Artificial Intelligence) #ML (Machine Learning) #SQL (Structured Query Language) #Compliance #Metadata #Project Management #Python #Scala #Scripting #Data Engineering #Quality Assurance #Data Quality
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:
β’ Design, develop and optimize annotation workflow and instructions to ensure high-throughput, scalability and accurate annotation
β’ Partner with engineering teams to define and align on annotation tool requirements
β’ Establish and enforce rigorous QA/QC processes for annotation accuracy and consistency
β’ Develop annotation project timeline and ensure the success delivery of annotations
β’ Track, facilitate, and direct priorities for several concurrent annotation efforts
β’ Track key performance metrics such as throughput (labels per hour), quality scores, and spend against targets, and provide regular report to stakeholders
β’ Develop and implement annotation working guidelines to ensure the compliance with organizationβs security, privacy, and financial guidelines
β’ Monitor financial states of purchase orders and budgets to ensure careful spending for uninterrupted service from the vendor
β’ Drive supply, equipment, and software ordering in coordination with stakeholders
β’ Find, socialize, and implement program improvements in coordination with stakeholders
β’ Facilitate project clearances, non-disclosure agreements, and Restricted Project Agreements
β’ Ensure vendor compliance with statements of work and service level agreements
Minimum Qualifications:
β’ 5+ years in operations, project management, or data analysis, with at least 2 years specifically in data annotation operations.
β’ Proven history of success in leading and managing large scale annotations for multimodal data, including, image, video, text, audio, sensor data, metadata, etc.
β’ Experience with data labeling platforms
β’ Strong understanding of AI/ML concepts, annotation workflows, and data quality assurance.
β’ Proven ability to create, maintain, and optimize SOPs for high-volume annotation, improving efficiency and scalability.
β’ Ability to translate complex technical requirements into clear, easy-to-understand instructions for non-technical staff.
β’ Experience managing complex, cross-functional projects, often with international or remote teams.
β’ Familiarity with budget tracking, cost reporting, or operational financial practices.
β’ A Bachelorβs degree in engineering related fields
Preferred Qualifications:
β’ Basic knowledge of SQL and/or Python for data querying and scripting.
β’ 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:
β’ Design, develop and optimize annotation workflow and instructions to ensure high-throughput, scalability and accurate annotation
β’ Partner with engineering teams to define and align on annotation tool requirements
β’ Establish and enforce rigorous QA/QC processes for annotation accuracy and consistency
β’ Develop annotation project timeline and ensure the success delivery of annotations
β’ Track, facilitate, and direct priorities for several concurrent annotation efforts
β’ Track key performance metrics such as throughput (labels per hour), quality scores, and spend against targets, and provide regular report to stakeholders
β’ Develop and implement annotation working guidelines to ensure the compliance with organizationβs security, privacy, and financial guidelines
β’ Monitor financial states of purchase orders and budgets to ensure careful spending for uninterrupted service from the vendor
β’ Drive supply, equipment, and software ordering in coordination with stakeholders
β’ Find, socialize, and implement program improvements in coordination with stakeholders
β’ Facilitate project clearances, non-disclosure agreements, and Restricted Project Agreements
β’ Ensure vendor compliance with statements of work and service level agreements
Minimum Qualifications:
β’ 5+ years in operations, project management, or data analysis, with at least 2 years specifically in data annotation operations.
β’ Proven history of success in leading and managing large scale annotations for multimodal data, including, image, video, text, audio, sensor data, metadata, etc.
β’ Experience with data labeling platforms
β’ Strong understanding of AI/ML concepts, annotation workflows, and data quality assurance.
β’ Proven ability to create, maintain, and optimize SOPs for high-volume annotation, improving efficiency and scalability.
β’ Ability to translate complex technical requirements into clear, easy-to-understand instructions for non-technical staff.
β’ Experience managing complex, cross-functional projects, often with international or remote teams.
β’ Familiarity with budget tracking, cost reporting, or operational financial practices.
β’ A Bachelorβs degree in engineering related fields
Preferred Qualifications:
β’ Basic knowledge of SQL and/or Python for data querying and scripting.
β’ 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)






