Available for new opportunities

Ismael
Marín

Tech Lead · Senior Software Engineer · AI Engineer · León, México 🇲🇽

20 years building software — all remote. Grown alongside Ruby on Rails through every major evolution of the framework. Focused on the intersection of backend engineering and AI tooling: building the systems that make AI genuinely useful for engineering teams.

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20
Years building software
370+
Pull requests merged at Dealerware
40+
Architecture docs & ADRs authored
10k+
Transactions / hour on systems owned

Open Source

Things I've built

rails-ai-bridge Published on RubyGems
Gem Version Gem Downloads

Turn any Rails app into an AI-ready codebase — one command, zero config. AI assistants waste tokens guessing your app structure and still give generic responses. rails-ai-bridge fixes the root cause.

  • Generates static context files for every AI tool — CLAUDE.md, AGENTS.md, .cursorrules, copilot-instructions.md, .windsurfrules, .mcp.json
  • No server required — commit the files, whole team benefits automatically
  • Live MCP server mode for real-time Rails introspection on demand
  • Works with Claude Code, Cursor, Codex, GitHub Copilot & Windsurf
$ gem 'rails-ai-bridge'
$ rails generate rails_ai_bridge:install
$ rails ai:bridge
Ruby MCP Claude Code Cursor Codex Copilot
Tessl Rating

Curated AI agent skill library for Ruby on Rails development. Structured SKILL.md files that give coding agents the context, conventions, and discipline to generate production-quality Rails code.

  • Tests as a hard gate — agents cannot write implementation before tests exist and fail
  • Workflow chaining from PRD → tasks → test gate → implementation → review → PR
  • 30+ skills covering service objects, engines, migrations, security & background jobs
  • Compatible with Cursor, Codex, and Claude Code
# Clone to your AI tool's skills directory
$ git clone git@github.com:igmarin/rails-agent-skills.git
~/.cursor/skills/rails-agent-skills
Ruby on Rails AI Agents TDD Cursor Claude Code

Capabilities

Tech Stack

Core Infrastructure
Ruby on Rails PostgreSQL Redis Go Docker AWS CircleCI
AI & Tooling
Claude (Anthropic) OpenAI Codex MCP Cursor GitHub Copilot
Architecture
Domain-Driven Design TDD / RSpec GraphQL Agentic AI Systems

Collaboration

How we can work together

🏗️
AI Integration & Tooling
I help teams safely integrate LLMs into existing Rails monoliths, build MCP servers, and setup agent-based workflows.
👨‍💻
Staff Augmentation
Available for Senior/Lead level feature development, capable of driving complex technical initiatives from PRD to production.
📐
Architecture Consulting
System design, performance optimization, and ADR authoring for scaling Ruby on Rails applications.

Writing

Latest articles

✍️
Your JSON Column Is Not a Settings System
Published · medium.com/@igmarin
✍️
The Engineer Who Understands the Product Will Always Win
Published · medium.com/@igmarin
🤖
Beyond Vibe Coding: How rails-ai-bridge Achieved "Semantic Parity"
Published · medium.com/@igmarin
🤖
Stop "Vibe Coding": How I Bridged the Gap Between Rails and AI
Published · medium.com/@igmarin
All articles on Medium →

Connect

Get in touch

Currently accepting contract work for Senior / Staff Engineer and AI Engineering roles.

💼
LinkedIn
ismaelmarin
⌨️
GitHub
igmarin
📝
Medium
@igmarin
✉️
Email
ismael.marin@gmail.com
🧠
Rails Skills
AI Agent Skills & Workflows
💎
RubyGems
rails-ai-bridge