Antoine Gaudreau Simard

Backend & Infrastructure Developer

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Senior developer with 11+ years of experience building backend systems and infrastructure. Specialized in performance optimization, CI/CD automation, and containerized deployments. Leverages LLMs like Claude Code and GitHub Copilot as core development tools for faster, more reliable delivery. Active open source contributor and maintainer. Bilingual (English/French).

Open Source

copilot.lua

Lua

GitHub Copilot integration for NeoVim — bringing AI code suggestions to the terminal-based editor.

4,000+ stars · 4,000 checkouts/day

  • Reverse engineered the VSCode Copilot integration
  • Managed issues and refactored infrastructure
GitHub ↗

tidydots

Go

Cross-platform dotfile manager with interactive TUI — manage configs across machines using symlinks, Go templates, and 10+ package managers.

Go · Bubble Tea · SQLite

  • 3-way merge with SQLite state for safe template rendering
  • Cross-platform path resolution for Linux and Windows
  • Developed with LLM-augmented workflows (Claude Code for architecture, testing, and edge cases)
GitHub ↗

tpm

Go

Modernized Tmux Plugin Manager — a full rewrite from Bash to Go with a modern TUI, while maintaining 100% backward compatibility.

Go · Bubble Tea · Tmux

  • Drop-in replacement with shell shim for seamless migration
  • Interactive TUI with background update checking for plugins
  • LLMs used for Bash-to-Go migration analysis and TDD workflow acceleration
GitHub ↗

teams-status-rs

Rust

Microsoft Teams home automation integration — syncs Teams presence status with smart home devices via MQTT.

Rust + tokio · MQTT

  • Reverse engineered the new MS Teams API
  • Extended based on community GitHub requests
GitHub ↗

vicinae

C++

Linux indexed file search service — fast full-text search using sqlite3 trigram indexing with RegEx support.

C++ · GTK · sqlite3

  • Custom RegEx-stripper for trigram index compatibility
  • Rewrote indexing to use Linux fanotify file observer
GitHub ↗

Experience

Freelance Full-Stack Developer

Sep 2025 – Present

Monselet Jardin · Montreal, QC

  • Built a route optimization SPA with Go backend and React frontend
  • Deployed with Docker on Oracle Cloud VM using Traefik and Nginx
  • Wrote tooling to migrate ERP from QuickBooks to Odoo

Director of Technology

Aug 2021 – Present

Multidev Technologies · Montreal, QC

  • Led LLM-assisted migration of entire ERP suite from InterBase to PostgreSQL across millions of lines of code
  • Introduced code reviews, stand-ups, and cross-training for 12 developers
  • Streamlined changelog management with conventional commits and git-cliff (10% → 70% adoption)
  • Integrated LLM tooling (Claude Code, Copilot) into development workflows for code generation, refactoring, and debugging

Senior Software Developer

Mar 2020 – Present

Multidev Technologies · Montreal, QC

  • Built MCP servers to give LLMs control over the Delphi IDE (compiling, debugging) and InterBase database access
  • Reduced data synchronization I/O and delays by 99% with a WebSockets server
  • Increased ORM data loading performance 9x through multithreading with object replication
  • Saved 5+ hours/week via CI/CD automation with Jenkins and GitHub Actions
  • Cut debugging and deployment time of web projects by 50%

Software Developer

Dec 2016 – Mar 2020

Multidev Technologies · Montreal, QC

  • Optimized client-facing SOAP API with up to 5x performance gains
  • Refactored 3 projects deemed unmaintainable by the team

Business & Technical Analyst

Nov 2013 – Dec 2016

Multidev Technologies · Montreal, QC

  • Coordinated web teams for ERP integration via ODBC and SOAP APIs
  • Implemented ERP software at 6 retailers across Canada and the U.S.

Skills

Languages

Go Rust SQL C++ Python TypeScript

Infrastructure & DevOps

Docker Traefik CI/CD Linux Nginx

Frameworks & Tools

Git NeoVim React

AI / LLM Tooling

Claude Code GitHub Copilot Prompt Engineering Agentic Workflows

Also experienced with

Delphi PHP Lua JavaScript Vue.js Laravel Jenkins GCP MySQL Bash

Education

Ruby & Android Kotlin Developer Nanodegrees

2016 & 2021

Udacity

B.Com in Management

2013

Concordia University — John Molson School of Business

Minors in Computer Science and Business Technology Management