I work across the stack, mostly Java and TypeScript, with Flutter on mobile. My current project is Kromia: an SDK that owns a shared contract, plus the web studio, REST API and mobile app that consume it.

I also run the infrastructure my projects sit on: authentication, WebSocket sync, GitHub Actions pipelines, and Docker deploys to a Raspberry Pi I maintain at home. Off-hours I'm preparing the TAI exam, Spain's national IT civil-service track.

Languages

Frontend

Backend & Data

DevOps & Observability

Testing & Quality

One SDK owns the contract. The web studio, the API and the mobile app consume it, and CI checks that they stay in sync.

flowchart LR
    subgraph SDK["🔒 kromia-sdk — the contract"]
        CORE["@kromia/core<br/>TypeScript · source of truth"]
        DART["kromia_core<br/>Dart mirror"]
        MCP["@kromia/mcp<br/>tools for AI agents"]
    end
    CI{{"drift CI<br/>versions · test corpus · API parity"}}
    STUDIO["🔒 Kromia Studio<br/>Next.js 16 · React 19"]
    API["🔒 Kromia API<br/>Express · MongoDB · MinIO"]
    MOBILE["🔒 kromia-mobile<br/>Flutter · Riverpod · GLSL"]

    CORE -- mirrored to --> DART
    CI -. guards .-> DART
    CORE --> STUDIO
    CORE --> API
    DART --> MOBILE
    STUDIO <-- REST --> API
    MOBILE <-- "REST + WebSocket" --> API

Some of the pipeline work behind it:

• 🍏 iOS builds on CI. A macos-latest runner compiles the .ipa, clones the private SDK with a dedicated PAT, injects the backend URL through --dart-define, and attaches the binary to the Release.
• 🛡️ Drift detection in three layers. The contract lives in TypeScript and is mirrored in Dart. CI compares versions, runs a cross-language test corpus and checks API parity. When the mirror falls behind, it opens a Jira issue and fails the check.
• 🗺️ Endpoint map tied to a test. The test enumerates the Express router and diffs it against the documented map, so adding a route without documenting it fails the PR.
• 📚 Versioned docs built with MkDocs Material and deployed to GitHub Pages from Actions.

_{🔒 = private repository, product in development.}

The Pi never compiles. CI pushes the image to GHCR, Watchtower notices the new :latest and recreates the container within about five minutes. One Watchtower per host, label-driven, so any project can opt in by adding a label. healthcheck and stop_grace_period keep redeploys from dropping in-flight requests behind the reverse proxy.

GameHub exposes GET /api/metrics in Prometheus text format, which I wrote by hand rather than pulling in a client library. It publishes traffic, average latency, unique and active visitors, downloads and bytes served. node_exporter covers host metrics, Loki and Promtail collect the logs, and Grafana reads all three. The endpoint needs a bearer token or a LAN address.

I write MCP servers so agents call my tools through a fixed schema instead of guessing at them.

• MCP servers in three languages. TypeScript, exposing an SDK's model as tools over both stdio and HTTP transports. C#, on the .NET Generic Host with the ModelContextProtocol package. Node, as a publishable CLI. Each one has its own test suite.
• Agent rules committed to the repo. AGENTS.md and CLAUDE.md set the TDD workflow, versioning policy and ownership boundaries an agent has to work within.
• Multi-agent orchestration. Two sessions run in parallel across separate repos, with a defined ownership split, a handoff channel and Jira tracking.
• Packaged skills in .claude/skills/ for driving GitHub Projects.
• Gemini in production, with caching, per-user quotas and auditing of the generated output.

_{ℹ️ I generate the card above with my own script, refreshed daily by a workflow in this repo. I switched after two third-party widget services shut down. It only counts public activity; much of my recent work sits in private repositories.}

Deuser Tech Group (A Minsait Business, Indra group) · Process automation, dual-training placement · Córdoba · 2024–2025
Built internal workflow automation on the Microsoft Power Platform: Power Automate flows, Power Apps, and integrations with SharePoint and Outlook. Also delivered a Laravel web project. Finished with a written recommendation from the company.

Atmira · Full-stack developer, DAM work placement · 2024
Team-built a project management web app: Angular 17 frontend with a Spring Boot + JWT backend over MySQL.

Inper · IT technician, SMR work placement · 2022
Hardware maintenance and network installations.

Education

• 📚 Preparing the TAI exam (Técnico Auxiliar de Informática, Spain's national IT civil-service exam) — a CS-degree-breadth syllabus: computer architecture, operating systems, networking, databases, security and public-sector IT law. I built the interactive study engine I use for it: apuntes-sdk.
• Higher Vocational Diploma in Multiplatform Application Development (CFGS DAM) · IES Francisco de los Ríos, 2022–2024
• Higher Vocational Diploma in Web Application Development (CFGS DAW) · IES Francisco de los Ríos, 2024–2025
• Vocational Diploma in Computer Systems and Networks (CFGM SMR)

Certifications

• 🧠 Programming for AI and Big Data in 5G Environments · 150 h, official certificate, Junta de Andalucía / Vodafone 5G Plus · 2026
• 🌐 Programming for IoT and Smart City Solutions in 5G Environments · 150 h, official certificate, Junta de Andalucía / Vodafone 5G Plus · 2026
• 🟣 Apache Kafka · Academia DavinchiCoder · 2025
• 🔐 Spring Security 6: Zero to Master with JWT and OAuth2 · Udemy, Eazy Bytes · 2024
• 🅰️ Angular: De cero a experto and JavaScript, HTML5 y CSS3 · Udemy