Welo Global

Data Annotation Specialist - Seattle (On Site)

Posted 4 Days Ago

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Seattle, WA, USA

In-Office

Mid level

Artificial Intelligence • Machine Learning • Natural Language Processing • Professional Services

The Role

Perform on-site data annotation and quality assurance for natural language datasets, test AI products, analyze data for consistency and model performance, report anomalies and insights, and collaborate to refine machine learning models.

Summary Generated by Built In

OVERVIEW

Welo Data is looking for a skilled Data Analyst to join our team and contribute to advancing AI technologies. This role offers a unique opportunity to engage directly with cutting-edge AI products, supporting the refinement and performance of machine learning models through precise data analysis and quality assurance.

Project Details

Job Title: Data Analyst

Location: Seattle (On-site)

Hours: Full-time, 40 hours per week

Start Date: November 2025

Employment Type: W2 Full-Time Employee

Must have valid work authorization in the US (Welocalize does not sponsor VISAs at this time).

This role is an incredible chance to be at the forefront of AI technology, helping shape the future by testing new products, updating machine learning models, and ensuring high-quality data for impactful AI solutions.

Key Responsibilities

Test new AI products and provide actionable feedback to improve functionality and user experience.
Conduct detailed data annotation and quality assurance of natural language datasets following established guidelines.
Collaborate in updating and refining machine learning models to boost accuracy and effectiveness.
Analyze data for consistency, relevancy, and alignment with project goals.
Perform quality control to identify and report anomalies, error patterns, and discrepancies.
Use basic data analysis methods to extract insights and support continuous improvement.
Prepare clear and concise reports on findings, including observations on data quality, AI model performance, and user feedback.

Preferred Qualifications

University degree in linguistics, translation, or a related field.
3-5 years of professional linguistics experience.
Strong analytical skills with the ability to detect patterns and anomalies.
Excellent communication skills and the ability to work collaboratively in a fast-paced environment.
Adaptability to evolving priorities and project requirements.

Benefits

Paid Sick Time & Paid Holiday (combined): 15 days
Paid Holidays: Memorial Day and Labor Day
Medical Insurance (subject to eligibility requirements)
Dental Insurance
Vision Insurance
Health Savings Account (HSA)
Voluntary Life Insurance
Accident, Critical Illness, and Hospital Indemnity Insurance
Telemedicine Benefit
401(k) Retirement Plan
Employee Assistance Program

Please note that in order to verify work authorization as is required by Federal law (I-9 process), all new employees must complete a live video verification with their selected IDs and provide photos of these selected IDs within their first 3 days of employment.

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In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire. In addition, we employ anti-fraud checks to ensure all candidates meet the requirements of the program.

As a trusted global transformation partner, Welocalize accelerates the global business journey by enabling brands and companies to reach, engage, and grow international audiences. Welocalize delivers multilingual content transformation services in translation, localization, and adaptation for over 250 languages with a growing network of over 400,000 in-country linguistic resources. Driving innovation in language services, Welocalize delivers high-quality training data transformation solutions for NLP-enabled machine learning by blending technology and human intelligence to collect, annotate, and evaluate all content types. Our team works across locations in North America, Europe, and Asia serving our global clients in the markets that matter to them. www.welocalize.com

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.

Skills Required

Valid work authorization to work in the US (no visa sponsorship)
On-site work in Seattle, full-time (40 hours/week), W2 employment
Conduct detailed data annotation and quality assurance of natural language datasets following guidelines
Test AI products, provide actionable feedback, and collaborate on model updates
Use basic data analysis methods to extract insights and prepare reports
University degree in linguistics, translation, or related field
3-5 years of professional linguistics experience
Strong analytical skills to detect patterns, anomalies, and error trends
Excellent communication skills and ability to work collaboratively in a fast-paced environment
Adaptability to evolving priorities and project requirements