Hi, I am Stella Cao,

a Full Stack Developer

I work with...

  • Programming Languages : Ruby, Python, JavaScript, SQL, HTML, CSS

  • Frameworks & Libraries
    • Backend : Ruby on Rails, Flask, Node.js
    • Frontend : ReactJs, NextJs, jQuery
    • UI Components : Material UI, Bootstrap

  • Web Technologies : REST APIs, Webhooks

  • Databases & Caching : MySQL, PostgreSQL, SQLite, Redis, Elasticsearch, Memcached

  • Cloud & Hosting Services : AWS, GCP, Firebase, Vercel

  • DevOps & Virtualization : Docker

  • Testing Tools : RSpec, pytest

  • Operating Systems : macOS, Windows

What I've done

Apr. 2021 – Present

Full Stack Developer – Nuxos Publishing Technologies | Full Remote

  • 📈 Platform Expansion:
    • Designed and implemented core platform features that led to a 25% increase in publishing partner adoption.
    • Improved usability and tailored interfaces for diverse publisher needs.
  • 🌐 Web Development for Major Publishers:
    • Developed 40+ websites and mini-sites for brands including Hachette Livre, Eyrolles, Piktos, Leduc,...
    • Delivered fully responsive, high-performance UIs aligned with client branding and CMS integration.
    • Built interactive components that increased session duration by 20%.
  • 🔍 Advanced Search & Filtering System:
    • Designed and developed a scalable search service with ElasticSearch, exposed via a Python REST API.
    • Improved front-office search for ebooks, authors, collections, categories, leading to a 30% increase in search-to-purchase conversion rate.
    • Implemented back-office search for orders, customers, and catalog data, reducing operational workload by 40%.
  • ⚙️ Automation & Workflow Optimization:
    • Developed background processing systems for order management, notifications, data updates, and system monitoring.
    • Improved platform reliability and ensured real-time data handling for publishers and customers.
  • 🧠 Natural Language Processing (NLP) Services:
    • Built a custom NLP service achieving 92% sentiment classification accuracy.
    • Enhanced personalized recommendation algorithms using sentiment and topic analysis, resulting in a 15% increase in CTR and a 10% reduction in returns.
    • Automated the detection of negative feedback trends, cutting customer support response time by 30%.
Oct. 2018 – Oct. 2020

Software Developer (Apprenticeship) - Estimancy | Paris

  • 🔢 Estimation Workflow Development:
    • Designed and implemented dynamic user interfaces that simplified complex estimation workflows and improved accessibility.
    • Enhanced user interaction through intuitive UI components, supporting flexible estimation scenarios.
  • ⚙️ Backend Engineering & Algorithm Optimization:
    • Developed and optimized backend services to ensure robust data processing and accurate approximation algorithms.
    • Implemented data pipelines that handle uncertain and incomplete inputs while maintaining system reliability.
  • 🤝 Agile Collaboration & DevOps:
    • Worked within a cross-functional agile team, contributing to sprint planning, code reviews, and feature development.
    • Utilized Git version control and integrated CI/CD pipelines to streamline deployment and maintain high code quality.

Where I learned

Master’s Degree in Software Engineering
  • Work-study program | Sept. 2018 – Sept. 2020
  • École Supérieure de Génie Informatique (ESGI) – Paris
Bachelor’s Degree in Computer Science
  • Sept. 2014 – May 2018
  • Sorbonne Université UPMC – Paris
French Scientific Baccalaureate – with Honors
  • Graduated 2014
  • Nguyen Dinh Chieu High School – Vietnam

I speak...

Vietnamese
Native
French
C1
English
C1

Let's connect !