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R
Raj R.

Raj R.

India flagKhandwa, India

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Freelancer Overview

My experience with AI is rooted in both practical model integration and meticulous data management. As a full-stack developer, I actively build with Large Language Models and agentic systems. For example, while developing the CodeSnap platform, I integrated the Google Gemini AI API to generate dynamic code explanations. This required rigorous prompt structuring, output validation, and a deep understanding of model behavior to ensure the generated data was consistently accurate, high-quality, and contextually relevant. Complementing my technical background is a strong foundation in precise data processing and quality control. I have hands-on experience managing complex digitization projects, including the accurate transcription and formatting of localized, language-specific records into Hindi. This dual perspective—understanding how AI models consume data on the backend while possessing the strict attention to detail required for manual data formatting—equips me to deliver the high-fidelity data labeling and validation essential for training robust models at OpenTrain AI.

Labeling Experience

I have hands-on experience in AI training and data annotation through freelance roles as an AI Trainer at Outlier AI and

I have hands-on experience in AI training and data annotation through freelance roles as an AI Trainer at Outlier AI and an AI Data Contributor at Remotasks. In these positions, I actively evaluate and rank model outputs across dimensions of accuracy, helpfulness, and safety to support reinforcement learning from human feedback (RLHF) workflows. Leveraging my academic background in chemical sciences, I apply specialized domain knowledge to assess the factual accuracy, reasoning quality, and response completeness of complex LLM outputs, alongside crafting highly targeted prompts for model refinement and capability improvement. Complementing my manual data annotation experience is a technical background in designing scalable LLM evaluation environments. As an AI SDE Intern at Xelron AI, I engineered containerized benchmark tasks and authored complex, HLE-style questions spanning math, physics, chemistry, and software engineering to support frontier-level capability assessments. I also validated these benchmarks through an 11-gate CI/LLM-as-Judge pipeline to enforce reproducibility and rigorous anti-cheat integrity. This dual perspective—combining meticulous data labeling with the technical architecture of AI benchmarking—equips me to deliver the high-fidelity, domain-accurate training data required at OpenTrain AI.

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