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D

David Markovic

AI Trainer and Data Annotator (Claude API Project Work)

Serbia flagBrezova, Serbia
$10.00/hrEntry Level

Key Skills

Software

No software listed

Top Subject Matter

Large Language Models (LLMs) / AI Evaluation / Prompt Engineering

Top Data Types

TextText
Computer Code ProgrammingComputer Code Programming

Top Task Types

Prompt Response Writing SFT

Freelancer Overview

AI Trainer and Data Annotator (Claude API Project Work). Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Bachelor of Science, Višja Strokovna Šola Velenje (2024). AI-training focus includes data types such as Text and labeling workflows including Prompt + Response Writing (SFT).

Entry LevelEnglish

Labeling Experience

AI Trainer and Data Annotator (Claude API Project Work)

TextPrompt Response Writing SFT
As an AI Trainer and Data Annotator, I designed, tested, and evaluated prompts and responses for language models via the Anthropic Claude API. My responsibilities included output evaluation, prompt iteration, and structured feedback to enhance AI output quality. The role demanded a strong annotation mindset and adherence to detailed guidelines. • Conducted prompt engineering and iterative improvements for LLM output accuracy • Evaluated, rated, and compared AI-generated text for accuracy, tone, and helpfulness • Synthesized complex text data and flagged inconsistencies or errors according to guidelines • Applied structured, documented annotation and reporting practices leveraging internal/proprietary tools

As an AI Trainer and Data Annotator, I designed, tested, and evaluated prompts and responses for language models via the Anthropic Claude API. My responsibilities included output evaluation, prompt iteration, and structured feedback to enhance AI output quality. The role demanded a strong annotation mindset and adherence to detailed guidelines. • Conducted prompt engineering and iterative improvements for LLM output accuracy • Evaluated, rated, and compared AI-generated text for accuracy, tone, and helpfulness • Synthesized complex text data and flagged inconsistencies or errors according to guidelines • Applied structured, documented annotation and reporting practices leveraging internal/proprietary tools

2024 - Present

Education

V

Višja Strokovna Šola Velenje

Bachelor of Science, Computer Science and Informatics

Bachelor of Science
2024

Work History

I

Interspar

Student Worker

Velenje
2024 - Present
I

IN.SIST

IT Support Intern

Velenje
2024 - 2024