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AI Data Annotator specializing in LLM evaluation, prompt analysis, multilingual annotation, and annotation QA. Experienced with large-scale datasets, complex guidelines, and quality-focused AI training workflows.…

Karina Troffer

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AI Data Annotator specializing in LLM evaluation, prompt analysis, multilingual annotation, and annotation QA. Experienced with large-scale datasets, complex guidelines, and quality-focused AI training workflows.…

Available to hire

AI Data Annotator specializing in LLM evaluation, prompt analysis, multilingual annotation, and annotation QA. Experienced with large-scale datasets, complex guidelines, and quality-focused AI training workflows.

Skills

Prompt Engineering

Data Visualization

Experience Level

Prompt Engineering

Expert

Data Visualization

Expert

Language

German

Fluent

Russian

Fluent

English

Fluent

Japanese

Intermediate

Spanish; Castilian

Intermediate

Italian

Beginner

Work Experience

AI Data Annotator at Freelancer (Various Projects)

June 1, 2025 - Present

Contributed to diverse AI training projects with a strong focus on data quality. Performed linguistic, visual, and contextual evaluations. Created, categorized, and quality-checked training data for generative AI models and LLMs. Quickly adapted to new tools, task types, and guidelines in fast-paced project environments. Collaborated with international teams to ensure consistent and high-quality annotation outputs.

AI Data Annotator at Welocalize

February 1, 2024 - June 1, 2025

Conducted multilingual annotations for machine learning datasets. Evaluated linguistic and stylistic suitability across cultures. Followed strict guidelines and quality standards. Supported optimization of AI model performance.

Customer Service Specialist at Tourlane

January 1, 2023 - January 1, 2024

Client support, operational coordination, and issue resolution.

Flight Attendant at Condor Flugdienst GmbH

January 1, 2012 - January 1, 2023

Safety compliance, intercultural communication, and high-volume customer service.