For employers

Hire this AI Trainer

Sign in or create an account to invite AI Trainers to your job.

LoginCreate account
Invite to Job
S
Stellan Roberson

Stellan Roberson

AI Annotation Fellow (Contract), Handshake AI

USA flagPortland, Usa
$20.00/hrExpertClickworkerData Annotation TechMercor

Key Skills

Software

ClickworkerClickworker
Data Annotation TechData Annotation Tech
MercorMercor
Don't disclose
Internal/Proprietary Tooling

Top Subject Matter

General AI model outputs (image and video)
Music clips
AI model audio outputs

Top Data Types

AudioAudio
TextText
VideoVideo
ImageImage
DocumentDocument

Top Task Types

Audio RecordingAudio Recording
Bounding BoxBounding Box
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
RLHFRLHF
TranscriptionTranscription
ClassificationClassification

Freelancer Overview

AI Annotation Fellow (Contract), Handshake AI. Brings 4+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Internal, Proprietary Tooling, and Mercor. Education includes Bachelor of Arts, Portland State University (2024). AI-training focus includes data types such as Image, Audio, and Video and labeling workflows including Evaluation, Rating, and Classification.

ExpertEnglish

Labeling Experience

Short-Form Video Curation & Generative Video Quality Rating

Internal Proprietary ToolingVideoText GenerationFine Tuning
Curated and lightly edited short-form video clips for AI training datasets, following SOPs for relevance, clarity, and consistency. Created supporting prompts and scenario variations to pair with video examples for training and evaluation. Also evaluated generative video outputs using multi-axis quality rubrics, scoring dimensions such as adherence to the prompt, visual coherence, temporal consistency, artifacts, and overall quality.

Curated and lightly edited short-form video clips for AI training datasets, following SOPs for relevance, clarity, and consistency. Created supporting prompts and scenario variations to pair with video examples for training and evaluation. Also evaluated generative video outputs using multi-axis quality rubrics, scoring dimensions such as adherence to the prompt, visual coherence, temporal consistency, artifacts, and overall quality.

2025 - 2026

AI Annotation Fellow (Contract), Handshake AI

Image
Evaluated multimodal AI outputs by adhering to detailed rubrics, scoring instructions, and evolving guidelines. Conducted quality reviews of both image and video generations, focusing on realism, instruction adherence, and artifact detection. Documented clear rationales and QA notes supporting preference rankings and tracked issues for improvement. • Implemented quality assurance processes for AI-generated visual data. • Ensured annotation alignment with evolving SOPs and project criteria. • Wrote rationales for decision points during evaluation and annotation. • Collaborated asynchronously to document issues and support model development.

Evaluated multimodal AI outputs by adhering to detailed rubrics, scoring instructions, and evolving guidelines. Conducted quality reviews of both image and video generations, focusing on realism, instruction adherence, and artifact detection. Documented clear rationales and QA notes supporting preference rankings and tracked issues for improvement. • Implemented quality assurance processes for AI-generated visual data. • Ensured annotation alignment with evolving SOPs and project criteria. • Wrote rationales for decision points during evaluation and annotation. • Collaborated asynchronously to document issues and support model development.

2026 - Present

Image Verification (Object/Count + Attribute Checks)

Internal Proprietary ToolingImageRelationshipClassification
Verified image data for training quality and correctness, including object/count validation and attribute checks. Applied acceptance criteria for consistency, clarity, and relevance; flagged edge cases and ambiguous items for review.

Verified image data for training quality and correctness, including object/count validation and attribute checks. Applied acceptance criteria for consistency, clarity, and relevance; flagged edge cases and ambiguous items for review.

2025

ASR Transcription & Timestamping

Internal Proprietary ToolingAudioClassificationEvaluation Rating
Produced ASR-style transcriptions with timestamping under detailed formatting rules. Corrected misrecognitions, ensured consistency in punctuation and speaker/content formatting, and flagged unclear segments per guidelines.

Produced ASR-style transcriptions with timestamping under detailed formatting rules. Corrected misrecognitions, ensured consistency in punctuation and speaker/content formatting, and flagged unclear segments per guidelines.

2025 - Present

SFT Content Creation (“gold standard” Responses)

Internal Proprietary ToolingTextText GenerationFine Tuning
Authored “gold standard” responses for SFT tasks, including complex reasoning and creative writing prompts. Followed strict formatting constraints and acceptance criteria. Iterated prompts to reduce ambiguity and improve repeatability across runs, producing consistent training examples suitable for fine-tuning.

Authored “gold standard” responses for SFT tasks, including complex reasoning and creative writing prompts. Followed strict formatting constraints and acceptance criteria. Iterated prompts to reduce ambiguity and improve repeatability across runs, producing consistent training examples suitable for fine-tuning.

2024

Education

P

Portland State University

Bachelors, Creative writing

Bachelors
2025 - 2026
P

Portland State University

Bachelor of Arts, Spanish

Bachelor of Arts
2024

Work History

K

Kiona Vineyards & Winery

Fulfillment & Quality Control Associate

Benton City
2021 - 2024
H

Hospitality & Operations

Hospitality and Kitchen Staff

Portland
2023 - 2023