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Nikolaos M.

Nikolaos M.

Scrap Metal Procurement Officer – Greek Market (Sambhav), 08/2022 - 12/2023

Greece flagThessaloniki, Greece

Key Skills

Software

Other

Top Subject Matter

Business and management
Finance/economics Domain Expertise
Logic Domain Expertise

Top Data Types

TextText
DocumentDocument

Top Task Types

Data CollectionData Collection

Freelancer Overview

Scrap Metal Procurement Officer – Greek Market (Sambhav), 08/2022 - 12/2023. Brings 5+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Stellar AI and Toloka AI platforms and Other. Education includes Master of Science, Brunel University London (2025) and Bachelor of Science, Queen Mary University of London (2022). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Data Collection.

Labeling Experience

Freelance AI Training and LLM Evaluation (Stellar AI, Toloka AI), 2025 - Current

TextText

Freelance AI training and LLM evaluation work on the Stellar AI and Toloka AI platforms. I evaluated and ranked AI-generated responses using structured rubrics across factual accuracy, relevance, reasoning quality, completeness, clarity, and instruction adherence. I performed comparative assessment by selecting the stronger output using evidence-based judgment and guideline compliance. • Evaluated and ranked responses for quality, accuracy, and relevance using criteria and changing task guidelines • Conducted fact-checking and online research to identify unsupported claims, factual inaccuracies, and logical weaknesses • Completed Greek-language evaluations requiring native-level understanding of grammar, meaning, tone, fluency, and cultural context • Covered business/management, finance/economics, logic, research, and general STEM subject areas, maintaining consistency across repeated tasks

2025 - Present

Scrap Metal Procurement Officer – Greek Market (Sambhav), 08/2022 - 12/2023

OtherTextTextData CollectionData Collection

Procurement research and supplier assessment for Greek scrap-metal purchasing within an international team. I gathered and evaluated market information such as prices, logistics, payment terms, and supply reliability to support procurement recommendations. This work involved compiling structured assessments and preparing comparisons for management decisions. • Identified and evaluated more than 50 potential scrap-metal suppliers using price, specs, reliability, logistics, and commercial risk criteria • Produced supplier assessments, market reports, and pricing comparisons with ongoing monitoring of Greek market conditions • Coordinated test purchases and communicated with suppliers/logistics providers to support accurate procurement decisions • Negotiated commercial terms that reduced door-to-door purchasing costs and supported international management recommendations

2022 - 2023

Education

Q

Queen Mary University of London

Bachelor of Science, Economics, Finance and Management

Bachelor of Science
2022 - 2022
B

Brunel University London

Master of Science, Strategic Management and Knowledge Management

Master of Science
2025

Work History

A

AFOI N. Mitintzi OE

Financial and Marketing Director

Thessaloniki
2025 - Present
S

Sambhav

Scrap Metal Procurement Officer

Thessaloniki
2022 - 2023