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Harris Hatzimpaloglou

Harris Hatzimpaloglou

Head of Product & Design

Greece flagThessaloniki, Greece
$70.00/hrIntermediateOther

Key Skills

Software

Other

Top Subject Matter

Design & Creative – Branding, UI/UX, Visual Systems
Technology – SaaS, Product Development & Automation
AI / Machine Learning – LLMs & Generative AI

Top Data Types

ImageImage
VideoVideo
TextText

Top Task Types

RLHF
Evaluation Rating
Text Generation
Question Answering
Classification

Freelancer Overview

Head of Product & Design with 16+ years of experience designing and building digital products across complex workflows. I specialize in structured problem-solving, translating ambiguous ideas into clear product systems, interfaces, and scalable solutions. I actively work with AI as part of my workflow, using prompt engineering, agent-based tools (Claude, co-work/code environments), and rapid prototyping platforms to support AI training, improve output quality, and accelerate product definition, documentation (PRDs), and iteration cycles.

IntermediateEnglish

Labeling Experience

AI Image & Visual System Training for Brand and Design Consistency

ImageClassification
Trained and refined AI-generated visual outputs to align with specific brand identities and design systems. Evaluated and categorized images based on composition, style consistency, lighting, and visual hierarchy. Selected high-quality outputs and filtered inconsistent results to improve generation accuracy across iterations. Applied structured prompt strategies and iterative feedback loops to guide AI models toward consistent visual direction, effectively building reusable visual systems for branding and product design use cases.

Trained and refined AI-generated visual outputs to align with specific brand identities and design systems. Evaluated and categorized images based on composition, style consistency, lighting, and visual hierarchy. Selected high-quality outputs and filtered inconsistent results to improve generation accuracy across iterations. Applied structured prompt strategies and iterative feedback loops to guide AI models toward consistent visual direction, effectively building reusable visual systems for branding and product design use cases.

2025 - Present

AI Output Evaluation & Prompt Optimization for Design Systems

TextRLHF
Developed and refined AI system behavior by structuring inputs, defining expected outputs, and continuously improving performance through iterative prompt adjustments. Created structured skill sets, workflows, and product documentation (PRDs) used to guide AI responses. Evaluated outputs for accuracy, clarity, and usefulness, effectively contributing to ongoing system training and optimization.

Developed and refined AI system behavior by structuring inputs, defining expected outputs, and continuously improving performance through iterative prompt adjustments. Created structured skill sets, workflows, and product documentation (PRDs) used to guide AI responses. Evaluated outputs for accuracy, clarity, and usefulness, effectively contributing to ongoing system training and optimization.

2025 - Present

Education

A

AAS College

Bachelor of Arts with Honors, Graphic Design

Bachelor of Arts with Honors
2024 - 2024

Work History

N

Next Now Ai

Head of Product & Design

Bay Area
2025 - Present
U

Unentitled

Senior Brand Designer

Los Angeles
2024 - 2025