Luan E.

Senior Full-Stack Engineer | Rails, AI Automation, Integrations

Senior full-stack engineer focused on Ruby on Rails, AI integrations, and workflow automation. I help startups and product teams build software that has to work in the real world: internal tools, customer-facing features, admin systems, and API-heavy backends that need to be reliable in production. My strongest background is in Rails, JavaScript, and product engineering. More recently, a big part of my work has been adding AI where it actually helps: document processing, review flows, internal assistants, and automations that reduce manual work instead of adding complexity. I can take a feature from idea to release. That includes frontend, backend, integrations, background jobs, debugging, performance work, and deployment. I’m comfortable stepping into existing codebases, cleaning up messy logic, and shipping improvements without breaking what already works. Recent work includes a browser-based terminal inside Coolify, secure validation flows for PDF, DOC, and DOCX uploads, multi-tenant Rails setups, API integrations, and AI-assisted product features. Typical projects I take on: - Adding AI features to an existing SaaS - Building internal tools and workflow automations - Extending Rails or Node apps with real business logic - Integrating third-party APIs, webhooks, and back-office workflows - Stabilizing legacy systems and shipping safely Core stack: Ruby on Rails, JavaScript/TypeScript, Vue, React, Node.js, PostgreSQL, Docker, OpenAI API, LangChain, Tailwind CSS