Giorgos Petropoulos

Lead Software Engineer at Qalzy

Technical lead for the Qalzy mobile application. Flutter mobile app feature development, bug fixing, and long-term architecture planning. Contributed to backend development using FastAPI, collaborating with product and design to deliver end-to-end features. Defined technical direction and best practices for mobile development within the team.

Senior Software Engineer at Intelistyle Ltd. / Qalzy Ltd.

Led and expanded development of React-based embeddable widgets for new clients. Designed and maintained client scraping pipelines to ingest product feeds, including rule-based logic for similar items and outfit generation. Enhanced backend services (Python, Flask) with Visual Search features and generation pipelines; automated garment attribute generation using external LLM integrations. Owned MongoDB data modeling, optimization, and operational workflows. Contributed to DevOps infrastructure with CI/CD via GitHub Actions and AWS. Acted as a technical reference point for the team, driving architectural decisions and scaling existing systems.

Software Engineer at Intelistyle Ltd.

Implemented React-based widgets for onboarding new clients. Built and maintained client scraping pipelines to parse product feeds and generate similarity, outfit, and visual-based recommendations. Supported CI/CD processes and AWS deployments; worked extensively with MongoDB for data storage and querying.

Software Engineer at FactSet

Part of a software development team building a web application providing AI-driven prospecting and investment insights. Focused on frontend development for complex data-driven user interfaces; implemented new features and UI improvements; collaborated with backend, product managers, and designers; wrote and maintained frontend tests.

Freelance Software Engineer at Logic in Flow

Lead Software Engineer & Software Architect for client projects delivering custom digital solutions. Founder and technical lead of Logic in Flow; designed system architectures, led end-to-end delivery, implemented full-stack web applications, and managed cloud deployment. Worked directly with clients to define requirements and technical roadmaps, led development workflows, code reviews, and deployment strategies.

Software Engineer at Cinobo Streaming Platform

Lead Software Engineer for the distribution system of cinema tickets, redeemed via QR Codes. Designed and implemented a ticket distribution system with one free cinema ticket per user per month. Integrated QR Code-based ticket redemption across partnered cinemas. Owned system architecture and end-to-end technical decision-making, ensuring reliability, security, and smooth live operation.

Front End Developer at Checkin.Travel

Frontend developer on the company's inner hotel management system. Extended and customized the frontend of a C#-based system to meet new business requirements. Implemented custom CSS and JavaScript functionality to improve usability and workflows. Delivered iterative UI improvements in production.