Dwg. no. JD-GA-001

  1. 04 PresentationReact · Next.js · SvelteKit
  2. 03 InfrastructurePostgreSQL · Drizzle ORM · pg-boss
  3. 02 ApplicationNode.js · Bun · Hono
  4. 01 DomainHexagonal architecture · TypeScript · Go

Hello, I'm

Full Stack Engineer · TypeScript · Go

View my work
Sheet
01 / 08
Rev.
D · 2026.07
Section A–A · Sheet 02 / 08

About Me

EU
Pass · EUSpanish citizen · EU work authorization
★ ★ ★C2English C2
3yearsin production
Pinned noteJD-GA-002

Computer Engineering graduate from Andrés Bello Catholic University (UCAB) and a Spanish citizen. For 3 years I have carried software projects through their whole life cycle: from understanding the problem and gathering the requirements to designing, building, shipping and maintaining the solution in production.

My work starts before the code: talking with the people who have the problem, understanding how their business runs, and turning that into clear requirements and a design that can be built, tested and maintained. That is how I have taken multi-tenant SaaS, marketplaces, banking integrations and AI services to production.

Since 2026 I have run Artitek, my own software consultancy. I work with each client from start to finish: we define together what to solve, I design and build the solution and run it in production, including the direct technical relationship with the bank behind the payment integration. I took the first of those systems to a paying client in six months.

6monthsarchitecture → paying client

Section B–B · Sheet 03 / 08Roles / Stack

  • Full Stack Engineer
  • Founder & Full Stack Engineer
  • TypeScript
  • Go
  • JavaScript
  • SQL
  • React
  • Next.js
  • SvelteKit
  • Tailwind CSS
  • React Query
  • ShadCN UI
  • Expo
  • Node.js
  • Bun
  • Hono
Section C–C · Sheet 04 / 08

Skills &Technologies

Tools, languages and practices I work with daily

Material legend

  1. C.1

    Languages

    • TypeScript
    • Go
    • JavaScript
    • SQL
  2. C.2

    Frontend

    • React
    • Next.js
    • SvelteKit
    • Tailwind CSS
    • React Query
    • ShadCN UI
    • Expo
  3. C.3

    Backend

    • Node.js
    • Bun
    • Hono
    • Fiber
    • Ruby on Rails
    • tRPC
    • REST APIs
    • Microservices
  4. C.4

    Data

    • PostgreSQL
    • Drizzle ORM
    • pg-boss
    • Schema design & migrations
  5. C.5

    Infrastructure

    • Docker
    • CI/CD
    • GitHub Actions
    • Turborepo
    • mTLS
    • OAuth
    • Firebase Auth
  6. C.6

    AI

    • LLM integration
    • Model evaluation
    • Agent-assisted development
  7. C.7

    Practices

    • TDD
    • Unit & integration testing
    • Hexagonal architecture
    • Monorepos
    • Git
    • Agile
Section D–D · Sheet 05 / 08(09) projects

FeaturedProjects

A selection of systems I have built and operated

Section E–E · Sheet 06 / 08

Experience

My professional journey

Revision blockJD-GA-001
  1. A2023.08 — 2024.09

    Eddu

    Full Stack Engineer

    I built and operated an educational platform end to end, from database design through the full frontend, across successive feature releases.

    Next.js · TypeScript · Node.js · Google Cloud Functions · PostgreSQL

  2. B2024.04 — 2025.07

    GMA Desarrollo

    Full Stack Engineer

    I owned an auto repair shop marketplace end to end: data model, backend services and the user-facing product, with a Next.js frontend, a Ruby on Rails API and a PostgreSQL database.

    Next.js · Ruby on Rails · PostgreSQL · TypeScript

  3. C2025.11 — 2026.07

    Kompii

    Full Stack Engineer

    I owned features end to end on a production platform for selling vehicles on consignment. I modelled the vehicle lifecycle across consignment agreement, listing, reservation, sale and seller payout — each stage with its own state, permissions and money implications. I led a full product redesign, rebuilding the interface without interrupting service for existing users, in a TypeScript monorepo with Turborepo, Next.js, tRPC and PostgreSQL.

    TypeScript · Next.js · tRPC · PostgreSQL · Turborepo · ShadCN UI · Expo

  4. D2026.01 — PresentCurrent

    Artitek

    Founder & Full Stack Engineer

    I run an independent software consultancy: sole engineer designing, building and operating three production systems, including the direct technical relationship with the bank behind the payment integration. I took the first of them from architecture to a paying client in six months, sustained end to end with TDD and CI.

    Go · Fiber · PostgreSQL · mTLS · TypeScript · SvelteKit · Docker

Section F–F · Sheet 07 / 08

Achievements

Key milestones in my career

  1. Receipt #0001 · 2026

    Founded Artitek ↗

    I started my own software consultancy. Beyond writing code, I learned to define a strategy, find clients, negotiate with a bank and deliver a product from start to finish. Today I look after three production systems, and I took the first of them to a paying client in six months.

    Total★★★
  2. Receipt #0002 · 2026

    A certifiable payment gateway in production

    I designed and operated a multi-tenant payment gateway integrated directly with Venezuelan banking, owning the technical relationship with the bank myself: understanding its requirements, agreeing on the integration and taking it to production with the security standards that handling payments demands (OWASP ASVS L2).

    Total★★★
  3. Receipt #0003 · 2026

    La Torre App ↗

    I conceived and built a complete SaaS product from scratch and took it from the idea to a paying client in six months. The work started by understanding how a condominium is run: fees split by ownership share, dual currency, bank reconciliation and owner votes.

    Total★★★
Section G–G · Sheet 08 / 08

Get in Touch

Have a project in mind? Let's talk.

Approved for construction
JD-GA-001 · Rev. DApproved for construction2026.07 · Jesús Díaz

jadiaz.inf@gmail.com

End of set · JD-GA-001 · Sheet 08 / 08