I'm Ioannis, a software engineer focused on designing, developing, and scaling high-performance web applications. I specialize in modular, reusable architectures and have led front-end and full-stack initiatives that improve performance, maintainability, and user experience across e-commerce and cybersecurity domains. I've contributed to large-scale Greek online retail platforms, building reusable, modular e-store solutions and driving redesigns of front-end codebases for scalable multi-store deployments. I enjoy collaborating with cross-functional teams to deliver user-focused features aligned with business goals, and I've even built AI-powered workflows and MVPs to optimize real-time monitoring and decision-making.

Ioannis Tzonis

I'm Ioannis, a software engineer focused on designing, developing, and scaling high-performance web applications. I specialize in modular, reusable architectures and have led front-end and full-stack initiatives that improve performance, maintainability, and user experience across e-commerce and cybersecurity domains. I've contributed to large-scale Greek online retail platforms, building reusable, modular e-store solutions and driving redesigns of front-end codebases for scalable multi-store deployments. I enjoy collaborating with cross-functional teams to deliver user-focused features aligned with business goals, and I've even built AI-powered workflows and MVPs to optimize real-time monitoring and decision-making.

Available to hire

I’m Ioannis, a software engineer focused on designing, developing, and scaling high-performance web applications. I specialize in modular, reusable architectures and have led front-end and full-stack initiatives that improve performance, maintainability, and user experience across e-commerce and cybersecurity domains.

I’ve contributed to large-scale Greek online retail platforms, building reusable, modular e-store solutions and driving redesigns of front-end codebases for scalable multi-store deployments. I enjoy collaborating with cross-functional teams to deliver user-focused features aligned with business goals, and I’ve even built AI-powered workflows and MVPs to optimize real-time monitoring and decision-making.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Language

Greek, Modern
Fluent
English
Advanced

Work Experience

Freelance - Remote Software Engineer at Self-employed / Freelance
April 1, 2023 - December 31, 2024
Designed and delivered dynamic portfolio websites for architects, engineers, and artists; built commercial e-commerce templates and full-stack web apps using Node.js, Express.js, EJS, MongoDB, and Stripe. Implemented secure payments, real-time features via Socket.IO, and front-end refactoring to improve performance and maintainability. Created two original 2D platform games with JavaScript and Aseprite from concept to completion.
Frontend & Full-Stack Software Engineer at Remote AI2 Cyber
February 1, 2025 - June 1, 2025
Designed and developed two full-stack cybersecurity web platforms from scratch to production. Led technical interviews and code reviews to maintain code quality, implemented secure coding practices, optimized performance, and built a comprehensive design system with core components, typography, illustrations, and a color system. Built multiple applications and pages as part of a redesign effort, addressing complex user needs and ensuring usability and deadlines. Built a multi-agent AI order management MVP using Crew AI, Redis, and Model Context Protocol (MCP), enabling real-time monitoring, AI recommendations, and human-in-the-loop decision workflows.

Education

Bachelor's Degree in Economic & Regional Development at Panteion University, Athens
April 1, 2017 - March 1, 2023

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Retail, Professional Services