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Marios Toparopoulos

Marios Toparopoulos

Senior Front-End Engineer

Athens, Attica, GR
+306947158688

Background


About

About

Senior Front-End Engineer with 6+ years delivering high-performance React/Next.js applications. Experienced in Node.js and REST APIs, now focusing on software architecture and system design for scalable platforms.

Work Experience

Work Experience

  • Senior Front End EngineerVodafone

    Mar, 2024 - Present

    • Built Vodafone’s Fiber Eligibility Tool used by 1M+ users/month, boosting conversion by 18% and engagement by 25%.

    • Optimized build system with TurboRepo + pnpm, cutting builds by 50%.

    • Architected Micro Frontend system enabling parallel feature development across teams.

  • Front End EngineerSportServe

    Dec, 2021 - Feb, 20242 years 2 months

    • Rebuilt sportsbook platform in Next.js & TypeScript, improving load times by 50% and reliability for thousands of users.

    • Designed modular UI architecture with Tailwind + Redux, improving scalability and dev speed.

    • Led Scrum for a 9-member cross-functional team, maintaining 100% sprint delivery rate.

  • Front End EngineerNetcompany Intrasoft Intl

    Jan, 2021 - Dec, 202111 months

    • Developed tax administration platform with React and TypeScript serving thousands of daily users.

    • Automated migration of JSON schemas to SQL with Node.js, saving 40+ dev hours/week.

    • Established scalable front-end architecture and coding standards for long-term maintainability.

Skills

Skills

  • Frontend

    React

    Next.js

    Redux

    Zustand

    Tailwind

    Styled Components

  • Backend

    Node.js

    Express

    NestJS

    SQL

    MongoDB

    REST APIs

  • Languages

    JavaScript

    TypeScript

    Python

    Java

  • Tools

    Docker

    Git

    Jest

    Playwright

    TurboRepo

    pnpm

    Plop

  • CMS

    WordPress

    Contentful

    Strapi

Education

Education

  • Computer Science, MSc - Erasmus CIVIS, Paris Lodron University of Salzburg

    Oct, 2025 - Feb, 2026

  • Computer Science, MSc, National Kapodistrian University of Athens

    Sep, 2024 - Present

  • Industrial Design & Production Engineering, BSc & MEng, University of West Attica

    Oct, 2013 - Oct, 2023

  • International Studies, Erasmus+, Vladivostok State University

    Jan, 2019 - May, 2019