Marcin Grzechnik

Key Skills

Software

Telus

Top Subject Matter

No subject matter listed

Top Data Types

Computer Code Programming

Document

Image

Text

Video

Top Task Types

Audio Recording

Bounding Box

Classification

Computer Programming/Coding

Data Collection

Evaluation/Rating

Object Detection

Prompt + Response Writing (SFT)

Text Generation

Freelancer Overview

I am a Python Developer with hands-on experience in data validation, backend development, and database management, which has given me a strong foundation for data labeling and AI training data roles. My work with Django REST Framework and PostgreSQL involved designing and optimizing data structures, implementing rigorous data validation with regex, and ensuring high data quality and security—skills that are crucial for accurate annotation and preprocessing. I have also completed projects that required analytical thinking, data mining, and the use of tools like NumPy, Pandas, and SQL for effective data analysis. My background in test automation and integration, combined with ongoing training in data science and machine learning, enables me to contribute to high-quality, reliable AI datasets across various domains. I am committed to delivering precise, well-documented work and continuously expanding my expertise in data-centric roles.

Labeling Experience

AI Evaluation & Data Annotation Specialist (TELUS – AI Safety Project)

TelusVideoBounding BoxClassification

Contributed to AI safety evaluation projects involving structured, guideline-based assessment of AI-generated responses. Responsibilities included response quality evaluation, selecting the most accurate outputs, performing detailed annotations, and ensuring compliance with safety and relevance standards.

Contributed to AI safety evaluation projects involving structured, guideline-based assessment of AI-generated responses. Responsibilities included response quality evaluation, selecting the most accurate outputs, performing detailed annotations, and ensuring compliance with safety and relevance standards.

2025

Education

Work History