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Alexandre Douillard

Fullstack Developer
Mount Royal viewpoint by day
Montreal, QC
Rock on which the wanderer stands in the famous painting by the German Romantic painter Caspar David Friedrich "Wanderer above the Sea of Fog" (1818).
Wanderer from the famous painting by the German Romantic painter Caspar David Friedrich "Wanderer above the Sea of Fog" (1818).

Presentation

Who am I?

Full-stack developer with 5 years of experience in web application design, development, and optimization. Skilled in creating scalable, high-performance architectures, I excel in both front-end and back-end development. Adaptable and quick to learn new technologies, I thrive in fast-paced environments and have a passion for solving complex problems. Focused on building tailored, user-centric applications from initial concept to production deployment.

Alexandre Douillard

Technical skills

Web development

HTML
CSS

Programming languages

Javascript
Typescript

Frontend

React.js
Next.js
Redux
Webpack

Backend

Node.js
Express.js
Socket.io
Sequelize

DevOps

Digital Ocean
Docker
GitLab

Databases

PostgreSQL
MySQL

Projects

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Real-Time Microservice with ChatGPT API

AI

Context : The rise in popularity of LLMs among the general public has prompted the technical team to design innovative AI-based features.

Problem : LLM APIs generate their responses in real time, word by word. To support this functionality, it was essential to develop a custom microservice from scratch.

Socket.io
OpenAI API
Typescript
React.js
Read article

Implementation of a real-time observability solution

DevOps
Observability

Context : Customer wanted to gain better visibility into their information system. Until then, no centralized monitoring solution was in place, which complicated incident analysis and slowed down decision-making.

Problem : The IT system suffered from sporadic latency, slowdowns, and opaque overall activity. It was impossible to quickly identify bottlenecks or the most resource-intensive applications.

GitLab
Docker
Umami
Grafana
Prometheus
Loki
Alloy
Read article

From Word/Excel to JSON: complete automation of the questionnaire creation process

Automation
Prompt engineering

Context : The Customer Success team had to create customized questionnaires for each customer, based on Word or Excel documents they sent us.

Problem : Each question had to be copied and pasted manually into the application editor, a repetitive and time-consuming task that could take up to an hour per questionnaire.

Node.js
OpenAI API
JSON
Sheet JS
Read article
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Contact

Feel free to contact me using the form below. I'll respond you shortly.
Phone

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Links

Socials

GitHub

GitHub

GitLab

GitLab

LinkedIn

LinkedIn

2026 Alexandre Douillard