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yannick-leguennec/README.md

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👋 Hello and welcome to my GitHub profile

I'm an AI Integration & Automation Specialist and Full-Stack JavaScript developer. I integrate AI into real production systems and build automation that runs itself. I work primarily in Python and TypeScript against the OpenAI, Anthropic, xAI, and Perplexity APIs, then ship the result end-to-end.

Most teams know they need AI but not where it actually creates value. That's the part I focus on: I come into a system or workflow, find where AI delivers real value (and where it shouldn't be used), then build the solution end-to-end. Before tech, I spent 17 years leading operations across industry and the restaurant sector, which is why I think in systems and care about solutions that survive real-world use.


🚀 Featured Projects

  • ArchMapper: a fully automated, resumable, bottom-up reverse-engineering pipeline that turns any codebase into a structured architectural document, ready for human or LLM analysis. Powered by Claude Sonnet and Claude Opus, it produces a canonical architecture.json plus Markdown spec cards, validated on repositories of 10,000+ files. MIT-licensed. → Details

  • Evidence Media: a fully autonomous, AI-powered independent news pipeline that finds, curates, classifies, enriches, and publishes in real time to X and Substack. Self-healing infrastructure, secure key management with HashiCorp Vault, fully automated publish workflows via GitHub Actions. Stack: Python, OpenAI API, xAI API, Perplexity API, Tweepy, GitHub Actions. → Code

  • The Wise Duck Dev GPTs Platform: a library of 800+ custom GPTs across 14 categories for web, mobile, AI, blockchain, and game developers, built to streamline workflows and boost productivity. Stack: Next.js, TypeScript, OpenAI API. → Live

  • Jean The Writer: an AI manuscript-correction tool that handles documents up to 600 pages, delivering grammar/syntax correction plus in-depth editorial reviews per chapter. Stack: Node.js, TypeScript, OpenAI API, Google Docs API. → Details

  • Family Flow: a React/TypeScript family-coordination app (events, reminders, shared tasks). Built with Mantine UI and Vitest, deployed on Railway. → Code · Demo


🛠 Skills

Soft skills: systems thinking, creativity and innovation, adaptability and resilience, teamwork and leadership, effective communication, problem solving and critical thinking, continuous learning, excellence in remote collaboration.

Technical skills:

  • AI LLMs: OpenAI Anthropic xAI Perplexity Hugging Face Midjourney

  • APIs & SDKs: OpenAI API Anthropic API xAI API / SDK Perplexity API X API Google API

  • AI Dev Tooling: Claude Code Cursor Codex Copilot Agentic Systems Prompt Engineering

  • Automation & Scraping: Make GitHub Actions Selenium Playwright BeautifulSoup4 Tweepy Requests dependency-cruiser dree

  • Frontend: HTML5 CSS3 SASS Bootstrap Mantine UI JavaScript TypeScript React Redux Next.js Vitest

  • Backend: Python Node.js Express.js Flask REST API Zod Pydantic pytest Prisma Swagger Postman

  • Testing: Vitest Jest React Testing Library pytest

  • Database: SQL PostgreSQL MongoDB pgAdmin PyMongo Sqitch Sequelize Faker

  • Languages: JavaScript TypeScript Python SQL YAML Shell

  • DevOps & Tools: Git GitHub Docker Vercel Railway AWS Google Cloud Linux JIRA Confluence Google Analytics WordPress

  • Cybersecurity: OWASP HashiCorp Vault OAuth2 JWT

  • Design: Figma Canva Photoshop


📐 AI-collaborative engineering standards

I author AGENTS.md, CLAUDE.md, and a full project-standards layer at project kickoff so AI assistants stay aligned with the architecture throughout development and long-term maintenance. Applied to my own projects, offered as a service to teams adopting AI-assisted workflows.

Engineering methodology: TDD · SOLID · DRY · KISS · YAGNI · Agile/Scrum · Kaizen.


📚 Education & Certifications

  • Full-Stack JavaScript Certificate (web & mobile development) · École O'clock, France · 2023–2024 · Program
  • Certificate in Entrepreneurship & Business Creation · HEC Montréal, Canada · 2020–2022 · First-in-class with distinction
  • BSc (Hons) in Gemmology · Birmingham City University, England · 2016–2020 · First-class honours
  • 30+ additional certifications in development, cybersecurity, networks & systems, design, and automation (OpenClassrooms, Udemy, SLN Academy, ANSSI, Domestika). Highlights: React/Redux, REST APIs, Docker, Linux, UX Design. · Full list

💡 Interests

Entrepreneurship, economics, technology, and investment. These interests give me a broad view of where the tech sector is heading.


🌐 Languages

Fluent in English and French · Conversational Spanish


🔗 Find me

@yannick-leguennec's activity is private