Open source · study community · good conversations

Let's talk about things
worth building.

I'm a software developer with a mathematical background, passionate about AI, open source, and knowledge sharing. Let's build something together.

01 · Product dev

Web & product builds

Taking products from an idea to something people can log into: the architecture, the first iterations, and a codebase a team can own.

  • Next.js · TypeScript · Postgres
  • Design systems & UI from scratch
  • Deployed to AWS or Vercel
02 · AI integration

AI features & systems

Practical integrations: retrieval, agents, vision and speech, with the right model for the job and evals that show what actually works.

  • RAG pipelines, embeddings, evals
  • Self-hosted & API-based models
  • Python · PyTorch · Ollama · OpenAI
03 · Blockchain

Blockchain & smart contracts

NFT marketplaces, token systems, on-chain logic. I focus on boring, auditable, maintainable code — the kind that doesn't make the news.

  • Solidity · Hardhat · Foundry
  • Ethereum · Polygon · Solana
  • Wallet + dApp integrations

How I approach a build

The same four steps, from a weekend spike to a long build.

01

Conversation

A 30-minute call to understand what you're trying to build and what success looks like.

02

Scope

A short written scope with milestones, assumptions, and honest trade-offs. No fluff.

03

Build

Weekly demos, shared repo from day one, and a communication style that matches your team's.

04

Handoff

Documentation, runbooks, and a transition plan so your team can confidently own what we built.

Selected work

Plixiq
Co-founder · Full-stack

Plixiq

Multi-tenant AI platform that unifies LLM access for teams and businesses.

PythonLiteLLMNext.jsMulti-tenantPostgreSQL
Digital Human
Full-stack developer

Digital Human

A real-time 3D digital human that listens, thinks and speaks, with lip-sync driven by generated phonemes.

React Three FiberRhubarb lip-syncElevenLabsGPT-4
Zippy
Full-stack developer

Zippy

AI-powered 3D avatars with real-time speech, facial animation, and conversational capabilities.

OpenAI GPTWhisperElevenLabsThree.js
CREARIA Agent
AI engineer

CREARIA Agent

WhatsApp-based customer service agent using RAG and tool orchestration for automated support.

RAGMCPpgvectorWhatsApp API
Aluna
Tech Lead

Aluna

AI hiring platform that scores CVs against a vacancy and pre-screens candidates over WhatsApp.

Next.jsFastAPILiteLLMpgvector
“Alejandro is the rare engineer who can zoom from smart-contract internals to product strategy in a single meeting, and actually make useful contributions at both ends.”
CM
Carla Mendez
CTO · Galos
“He shipped the first working version of our RAG pipeline in two weeks, and then — crucially — spent the next two teaching our team how to maintain it.”
RS
Rodrigo Salas
Head of Eng · Laboratoria

Ready when
you are.

Whether you want to collaborate on a project, join the study community, or just say hi — here's how to reach me.

Collaborate | Smart, Adaptive, and Future-Ready Solutions