Product-minded Full-Stack Software Engineer with hands-on experience building and shipping TypeScript-based web applications end-to-end. Comfortable working across React/Next.js frontends and Node.js backends, with a strong focus on usable UI, performance, and pragmatic delivery.\n\nI learn fast, iterate quickly, and enjoy turning rough ideas into working product features in collaborative teams. I value clear communication, engineering discipline, and delivering pragmatic, maintainable code while collaborating in Agile, distributed environments.

George Tsagiannis

Product-minded Full-Stack Software Engineer with hands-on experience building and shipping TypeScript-based web applications end-to-end. Comfortable working across React/Next.js frontends and Node.js backends, with a strong focus on usable UI, performance, and pragmatic delivery.\n\nI learn fast, iterate quickly, and enjoy turning rough ideas into working product features in collaborative teams. I value clear communication, engineering discipline, and delivering pragmatic, maintainable code while collaborating in Agile, distributed environments.

Available to hire

Product-minded Full-Stack Software Engineer with hands-on experience building and shipping TypeScript-based web applications end-to-end. Comfortable working across React/Next.js frontends and Node.js backends, with a strong focus on usable UI, performance, and pragmatic delivery.\n\nI learn fast, iterate quickly, and enjoy turning rough ideas into working product features in collaborative teams. I value clear communication, engineering discipline, and delivering pragmatic, maintainable code while collaborating in Agile, distributed environments.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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Language

English
Fluent
Greek, Modern
Advanced

Work Experience

Software Engineer at Self-Employed / Freelance
January 24, 2024 - Present
Led end-to-end development of multiple projects: ASEP 2025 Quiz PWA (Next.js + TypeScript) with offline support and bilingual UI; ChronoQuest PWA (React/Vite, Node.js, PostgreSQL, Docker) with drag-and-drop and offline support; Rebuilt client websites with Next.js SSR and Nuxt3; Refactored the ASCSA Digital Corpus backend for PostgreSQL data modeling and search performance; Built YouTube Summariser & Translator using a full-stack Next.js backend interfaced with LLM & ASR APIs.
Full-Stack Web Developer at HOOKTO (XEFI Group)
March 1, 2023 - January 1, 2024
Contributed to a microservices-based internal management system using Ruby on Rails, Vue/Nuxt, PostgreSQL, and Docker; alternated between frontend and backend tasks with a focus on well-tested, maintainable features; worked in a Scrum team practicing TDD (RSpec) and regular code reviews.
Python GUI Developer at Coventry University / Athens-Paris X
January 1, 2020 - January 1, 2022
Research tooling: UX & reliability
Junior ML Engineer at 4Cast, Athens
January 1, 2020 - January 1, 2020
Model drift analysis, forecasting stability
Data Analyst at IFOP, Paris
January 1, 2018 - January 1, 2019
NLP pipelines, topic modelling
Risk Data Analyst at IIT Demokritos, Athens
January 1, 2012 - January 1, 2013
Scientific computing
Mathematics & Physics Tutor at Freelance
January 1, 2004 - January 1, 2022
Tutor across Mathematics and Physics; freelance

Education

Bootcamp Full-Stack Web Development at Le Wagon, London
January 1, 2022 - February 4, 2026
M.Res. Computational Social Sciences at Université Paris Nanterre – Paris X
January 1, 2019 - February 4, 2026
B.A. Science-Technology-Society at Sorbonne Université – Paris IV
January 1, 2014 - February 4, 2026
M.Eng. (5y) Applied Mathematics & Physics at National Technical University of Athens
January 1, 2009 - February 4, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Education, Media & Entertainment, Professional Services, Computers & Electronics

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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