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Leon Emes

Data Labeler and Evaluator (LLM)

United Kingdom flagLondon, United Kingdom
$70.00/hrIntermediateOtherMercor

Key Skills

Software

Other
MercorMercor

Top Subject Matter

Finance/Private Credit
Finance/securities/commodities Domain Expertise
Legal Services & Contract Review

Top Data Types

TextText
DocumentDocument

Top Task Types

Prompt Response Writing SFT

Freelancer Overview

Data Labeler and Evaluator (LLM). Brings 39+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Other and Mercor. Education includes Professional Education Certificate, MIT and Bachelor of Science, City University London. AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Prompt + Response Writing (SFT).

IntermediateEnglishFrench

Labeling Experience

Data Labeler and Evaluator (LLM)

OtherText
At Mentis AI, I conducted prompt writing, rubric evaluation, data labeling, and response accuracy analysis focused on finance and private credit. The experience involved analyzing AI-generated responses to complex spreadsheets, memos, and presentations for accuracy and appropriateness. My work contributed to improving large language model (LLM) performance in financial contexts. • Evaluated financial text responses for correctness and coherence. • Labeled and reviewed AI outputs against provided rubrics in the finance domain. • Provided feedback for prompt engineering to enhance model responses. • Worked closely with AI researchers to support targeted AI optimizations.

At Mentis AI, I conducted prompt writing, rubric evaluation, data labeling, and response accuracy analysis focused on finance and private credit. The experience involved analyzing AI-generated responses to complex spreadsheets, memos, and presentations for accuracy and appropriateness. My work contributed to improving large language model (LLM) performance in financial contexts. • Evaluated financial text responses for correctness and coherence. • Labeled and reviewed AI outputs against provided rubrics in the finance domain. • Provided feedback for prompt engineering to enhance model responses. • Worked closely with AI researchers to support targeted AI optimizations.

2026 - 2026
Mercor

AI Training Content Specialist

MercorTextPrompt Response Writing SFT
At Mercor, I participated in the training and development of AI models in collaboration with a leading AI lab. My responsibilities included real-world task writing, prompt analysis, and output evaluations on complex financial documents. This role covered projects in securities, commodities, and broader financial training for large AI models. • Wrote and curated training prompts and model outputs. • Analyzed AI responses to financial, accounting, and securities-related tasks. • Evaluated model understanding on memos, spreadsheets, and presentation texts. • Supported RLHF and supervised fine-tuning through scenario-based exercises.

At Mercor, I participated in the training and development of AI models in collaboration with a leading AI lab. My responsibilities included real-world task writing, prompt analysis, and output evaluations on complex financial documents. This role covered projects in securities, commodities, and broader financial training for large AI models. • Wrote and curated training prompts and model outputs. • Analyzed AI responses to financial, accounting, and securities-related tasks. • Evaluated model understanding on memos, spreadsheets, and presentation texts. • Supported RLHF and supervised fine-tuning through scenario-based exercises.

2025 - 2026

Education

I

International Capital Market Association

Certificate, Financial Market Regulation

Certificate
Not specified
I

IC Agile

Certified Professional, Agile Methodologies

Certified Professional
Not specified

Work History

E

ECT Services

Debt Advisor

Paris
2023 - Present
A

ARIA Commodities

Head of Capital Markets

London
2021 - 2023