ABOUT

Software engineer based in Valencia, building production systems since 2019.

available now

I build full-stack systems across Bitcoin indexers, AI workspaces, government custody platforms, DeFi protocols, and B2B SaaS. Most of my work happens at the system level: schema design, microservice architecture, data pipelines, protocol engineering.

I prefer self-hosted over managed when the tradeoff is worth it, OSS when sharing costs nothing and benefits others, and depth over breadth. I've been the sole engineer behind Satstream and Trilo, shipped civic infrastructure at Ley Abierta, and owned two critical modules at a platform that handles law enforcement seizures across the EU and North America.

Currently: building Trilo (multi-platform AI workspace) and taking select freelance work through Konar Technologies. Based in Valencia, remote-friendly.

EXPERIENCE

2025 — now

Sole architect

Trilo / Hexmount

Designing and shipping Trilo: an AI workspace with autonomous coworkers as teammates, a queryable knowledge graph, and a custom DAG workflow orchestrator. Web (Next.js), backend (Bun + Elysia), mobile (Expo RN), desktop (Tauri 2) and a Python LiveKit voice agent. Live at trilo.chat.

2024 — 2025

Sole engineer

Satstream

Building and operating Bitcoin's data layer. 9 repos, 4 indexers (Rust/Go/Python), 5-language SDK suite (OpenAPI-generated), MCP server, block explorer, AWS CDK infra. Indexes the full Bitcoin chain (~3 TB) for sub-second queries.

2026

Sole engineer

Ley Abierta

190 years of Spanish legislation as Git. Hybrid BM25 + RAG retrieval with a custom int8 SIMD C kernel: Recall@5 from 2% to 66% on real citizen queries, median latency from ~120s to sub-second. Live at leyabierta.es.

2022 — 2024

Software engineer

Asset Reality

19 months at a government-grade crypto custody platform. Owned the multi-sig governance/escrow engine (configurable approval groups, mandatory approvers, WebSocket events, Fireblocks webhooks) and the 12-chain blockchain ingestion platform (ETH, BTC, Solana, Tron, XRP, Polygon, Arbitrum, others) wired via RabbitMQ. Also: Fireblocks vault integration, platform containerization (15+ microservices), custody UI. Platform AUM grew from $200–300M to $500M during my tenure ($1B+ today). Stack: Go, TypeScript/React, MongoDB, Postgres, RabbitMQ, AWS, Terraform.

2021 — now

Sole engineer

Tecpar (via Konar Technologies)

Sole engineer behind Tecpar S.L.'s full platform, a B2B SaaS that operates a real electronics repair workshop (tecpar.es). Built the internal admin for technicians, the client portal, the online shop, and the public site; the system handles the entire order lifecycle. Also publishing OSS under Konar Technologies (Lovely-Logs, DiffSheets) and taking select freelance engineering work.

PRINCIPLES

SHIPPING OVER PERFORMING

A working system in production beats a perfect one in a PR. Delivery first, with correctness as a hard floor. The interesting engineering problems don't appear in planning. They show up when the thing is running.

SOVEREIGNTY OVER CONVENIENCE

I self-host where it matters: Traefik over Vercel for a real business, ScyllaDB instead of a managed service when write throughput demands it, Qwen on own hardware when the data shouldn't leave. Engineering-driven, not ideological.

HONEST NUMBERS

CompoundFox publishes its live performance on a public dashboard. Asset Reality AUM figures come with caveats about platform vs personal attribution. Where I claim ownership, I can show the commits. Portfolio claims should survive a code review.