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Andrew Stephens

Andrew Stephens

AI Data Trainer & Quality Analyst

USA flagChicago, Usa
$20.00/hrExpertScale AIAppenLabelbox

Key Skills

Software

Scale AIScale AI
AppenAppen
LabelboxLabelbox

Top Subject Matter

Natural Language Processing
General AI Data Annotation
Legal Services & Contract Review

Top Data Types

TextText
ImageImage
DocumentDocument

Top Task Types

ClassificationClassification
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
TranscriptionTranscription
Text GenerationText Generation
Object DetectionObject Detection
RLHFRLHF
Red TeamingRed Teaming
Data CollectionData Collection
PolygonPolygon

Freelancer Overview

AI Data Trainer & Quality Analyst. Brings 5+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Scale AI and Appen. Education includes Bachelor of Arts, University of Illinois, Chicago (2018) and High School Diploma, Payton College Preparatory High School (2014). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Classification.

ExpertEnglish

Labeling Experience

Scale AI

AI Data Trainer & Quality Analyst

Scale AIText
In this role, I trained and evaluated large language models by labeling over 2,500 data points daily with exceptional accuracy. My responsibilities included sentiment analysis, entity recognition, and scoring AI prompt responses to enhance natural language model performance. I collaborated with global teams to refine annotation guidelines and support new team member onboarding. • Improved model accuracy by reducing error rates by 35% through precise sentiment and entity label assignments. • Consistently ranked in the top 5% of annotators, demonstrating reliability and attention to detail. • Utilized advanced annotation tools and remote communication platforms to maintain 99.2% data quality. • Received company-wide recognition for high performance three consecutive quarters.

In this role, I trained and evaluated large language models by labeling over 2,500 data points daily with exceptional accuracy. My responsibilities included sentiment analysis, entity recognition, and scoring AI prompt responses to enhance natural language model performance. I collaborated with global teams to refine annotation guidelines and support new team member onboarding. • Improved model accuracy by reducing error rates by 35% through precise sentiment and entity label assignments. • Consistently ranked in the top 5% of annotators, demonstrating reliability and attention to detail. • Utilized advanced annotation tools and remote communication platforms to maintain 99.2% data quality. • Received company-wide recognition for high performance three consecutive quarters.

2023 - Present
Appen

Data Entry & Processing Specialist

AppenTextClassification
As a Data Entry & Processing Specialist, I completed high-volume transcription and categorization projects for AI data annotation purposes. I entered and verified records, handled sensitive information, and helped streamline data pipelines for machine learning. My work contributed to efficient AI training and strict privacy compliance. • Verified 1,200+ records per shift with a 100% quality audit rate. • Accelerated data processing by 40% faster than team average. • Ensured data privacy by adhering to NDA and client protocols. • Supported large-scale transcription and classification for diverse machine learning tasks.

As a Data Entry & Processing Specialist, I completed high-volume transcription and categorization projects for AI data annotation purposes. I entered and verified records, handled sensitive information, and helped streamline data pipelines for machine learning. My work contributed to efficient AI training and strict privacy compliance. • Verified 1,200+ records per shift with a 100% quality audit rate. • Accelerated data processing by 40% faster than team average. • Ensured data privacy by adhering to NDA and client protocols. • Supported large-scale transcription and classification for diverse machine learning tasks.

2019 - 2021

Education

U

University of Illinois, Chicago

Bachelor of Arts, Communication Studies

Bachelor of Arts
2014 - 2018
P

Payton College Preparatory High School

High School Diploma, General Education

High School Diploma
2010 - 2014

Work History

C

Crowdgen

Senior Customer Service Representative

Chicago
2021 - 2022
A

Amazon Mechanical Turk

Data Entry & Processing Specialist

Chicago
2019 - 2021