Description

Hello, I'm Lucie 👋

I'm a French Ruby on Rails Full-Stack Engineer with 5 years of experience building high-volume, reliable, production-grade applications.

I help tech teams deliver faster and scale safely by designing and developing:

Robust back-end APIs
Micro-services or monolithic architectures
Building eCommerce OMS (shipping, order routing, fulfillment logic, workflows)
Complex features in Ruby 3, Rails 7, GraphQL, Sidekiq, PostgreSQL, RSpec
Intuitive front-end interfaces with HTML, CSS, Bootstrap, and some React

What clients appreciate about working with me:

Clean, maintainable and well-tested code
Strong ownership: I deliver from problem definition to production
Good communication (async-friendly, clear, structured)
Proactive mindset: I identify edge cases, propose improvements, and challenge requirements when needed
A real ownership mindset: from spec to production deployment

I'm looking for impactful projects, where I can help teams ship faster, improve architecture, or take on challenging features.

If that sounds like what you need, I'd be happy to chat!

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Amsterdam (up to 40km)

EXTIA
SOFTWARE ENGINEER
E-COMMERCE
September 2024 - October 2025 (1 year and 1 month)
Ruby on Rails Back-end Software Engineer — 4Murs (eCommerce)

Designed and maintained scalable back-end APIs for 4Murs, focusing on the order management system using a micro-services architecture.
Implemented new features (such as gift card management or delivery system) while ensuring performance, reliability, and security
Improved delivery quality with CI/CD pipelines, automated testing and monitoring tools (Sentry, Kibana)
Wrote end-to-end tests with >90% coverage, ensuring reliability and long-term maintainability
Contributed to a robust and maintainable architecture supporting high-volume transactions
Collaborated in a fully remote team through peer coding, code reviews, and daily stand-ups

Technologies: Ruby on Rails, Sidekiq, Git, Kibana, GraphQL, Sentry, CI/CD, daily
Microservices GraphQL Sentry E-commerce Pair Programming
OCTOPUS LAB
SOFTWARE ENGINEER
ENVIRONMENTAL
June 2021 - July 2024 (3 years and 1 month)
Lille, France
Full-Stack Engineer — Octopus Lab (SaaS Air Quality Monitoring)

Contributed to a SaaS platform for real-time air quality monitoring and prediction, focusing on alerting, API integrations, and system customization.
Developed back-end services and front-end components (QR code generation, email notification systems, interactive dashboards) to enhance user engagement
Wrote end-to-end tests with >95% coverage, ensuring reliability and long-term maintainability
Participated in pair programming and conducted constructive code reviews to ensure clean, maintainable, and scalable code
Collaborated with a cross-functional team to deliver reliable, user-friendly features on time
Worked with full-stack technologies to implement solutions end-to-end

Technologies: Ruby on Rails, ActiveRecord, Sidekiq, PostgreSQL, HTML, CSS, React, jQuery, Bootstrap, Git, CI/CD, Docker, OKR
External API integration OKR Pair Programming Monolithique Responsive design
OCTOPUS LAB
TRAINEE SE
ENVIRONMENTAL
June 2020 - June 2021 (1 year)
Lille, France
Full-Stack Engineer (Internship) — Octopus Lab

Developed a public dashboard for users to monitor and analyze building air quality in real time, later monetized as part of the SaaS offering.
Learned and applied Ruby on Rails, collaborating with senior engineers on API design, front-end integration, and UI improvements
Participated in team OKRs to align development with business goals
Gained hands-on experience with best coding practices and GitLab version control
Contributed to a user-facing product that supported data-driven decision making for customers

Technologies: Ruby on Rails, HTML, CSS, GitLab, OKR
User Interface Design Teamwork Bootstrap External API integration Backend Service Development

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

Baptiste Duhen

Fullstack developer

4.6

(4)

Amed Hamou

Senior Lead Developer

(2)

Audrey Champion

Web developer

4.3

(3)

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Computer Science RNCP certification
Training Center WEBFORCE 3
2021
Computer Science RNCP certification

Lucie Debrabandere

Full-Stack Developper | Back-end | Ruby on Rails

About Lucie

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