SESSION · OPERATOR · ACTIVE

GERARD LLANAS CONESA

Full Stack AI EngineerLLM Application Developer

Full Stack Engineer with 7+ years shipping production web and mobile apps, currently specialized in AI-native products powered by LLMs. I turn unstructured data — text, images, audio, video — into reliable product features through LLM pipelines, structured outputs and tool use. Deep TypeScript / Node.js plus modern AI engineering: spec-driven development, agentic coding, evaluations and MCP integrations.

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02 / Skill Matrix

Stack & tooling, in modules.

Eight clusters, mapped to how I actually build. AI / LLM engineering sits at the core; everything else snaps in around it.

AI / LLM Engineering

PRIMARY

Claude
OpenAI
Gemini
Ollama (local)
Prompt engineering
Structured outputs
Function calling / tool use
Agentic workflows
Evaluations
Multimodal pipelines

Languages & Runtimes

5 / 5

TypeScript
JavaScript (ES2022+)
Node.js
PHP
Java

Frontend

5 / 5

React
React Native
Vue.js
Next.js
Tailwind CSS

Backend

5 / 5

Node.js
Express
Laravel
REST APIs
WebSockets (Socket.IO)

Databases

5 / 5

MongoDB
MySQL
SQL Server
PostgreSQL
Vector stores

Cloud & DevOps

5 / 5

Docker
AWS
Linux
Git
CI/CD

AI Dev Tools

7 / 7

Claude Code
OpenAI Codex
OpenCode
Cursor
MCP servers
agents.md
Custom skills

Methodologies

4 / 4

Agile
Spec-driven development
Test-driven development
Code reviews

03 / Boot Sequence Log

Career, replayed.

Eight years of full-stack delivery — from Vue + Laravel B2B apps to today's AI-native pipelines. Each entry is a real role, real outputs.

FEB 2025 — PRESENT● ACTIVE· Remote

Independent AI Engineer & Full Stack Developer

Freelance / Self-directed AI Projects

Designing and shipping AI-native full-stack applications that integrate LLMs as a core product capability — focused on TypeScript and Node.js.
Building LLM pipelines that extract structured data from text, images, documents and YouTube transcripts for downstream business logic.
Adopting spec-driven development and agentic coding workflows (Claude Code, Codex, OpenCode, MCP) to accelerate delivery while keeping code reviewable.
Reusable skills, agents and prompt frameworks to standardize how AI assistants plug into engineering pipelines.
Completed an intensive Master's program in Full Stack Development (MERN) at Nuclio Digital School in parallel with client projects.

JUN 2020 — JAN 2025· Barcelona · Remote

Full Stack Developer

ITnube

Designed and shipped custom B2B web applications with Node.js, Vue.js and PHP.
Built real-time collaborative features with Socket.IO.
Developed cross-platform mobile apps with React Native.
Designed and maintained REST APIs against SQL Server and MySQL.
Containerized dev and deployment workflows with Docker on Linux.
Maintained legacy WordPress platforms and internal tools; on-call for production incidents.

JAN 2018 — DEC 2019· Barcelona

Full Stack Developer

Telanto

Built and maintained web applications using Vue.js and Laravel.
Managed cloud infrastructure on AWS.
Optimized SQL queries and improved overall application performance.
Worked with Git in collaborative team environments.

04 / Selected Projects

What I'm building.

Two AI-native products, both built end-to-end. Full case studies inside.

AI · OPEN SOURCECase Study

Mincely

Recipe Intelligence Engine — turns text, docs, photos or YouTube videos into structured recipes with macros. Multi-provider LLM routing, USDA-backed nutrition.

Next.js 15AnthropicOpenAIOllamaNeonZod

SAAS · LIVECase Study