Software engineer · Zaragoza, Spain
I build AI systems, immersive products, tools, and infrastructure. 19 years shipping software for consumers and companies across e-commerce, streaming, VR, and real-time 3D. Now focused on agent orchestration and developer tooling, mostly in Rust.
| Project | What it is |
|---|---|
| ka-harness · docs | A model-agnostic, very-low-footprint coding agent in Rust: one static binary, every provider, every model, no daemon. |
| ka-agent · docs | Resident assistant on the Ka coding engine: Telegram, long-term memory, and human approvals. |
| voyager · docs | Deep-research CLI in Rust: chained search providers, an iterative plan-search-synthesize loop over any LLM backend, and a verifiable evidence trail on disk. |
| openloop · docs | A CLI and daemon for autonomous, unattended development across linked repositories: planning, writing, validating, and promoting changes on a loop. |
| visiumxr · demo | Open-source VR/360/180 video player for the web: an embeddable <visiumxr-video> element built on WebGL2 + WebXR. |
| agent-notify | Tray companion for AI coding agents: live session status, attention popups, and webhooks. Single Go binary for Windows, Linux, and WSL. |
- phpswarm: agentic AI framework for PHP
- kindle2epub + acsm2epub: DRM-free EPUB tooling from the CLI, no Calibre, no GUI
- media-transcriber: batch audio/video transcription with pluggable AI backends
- microgpt-visual: interactive, step-by-step visualization of Karpathy's
microgpt.py - ai-context: reusable prompts and skills for AI coding agents
Full archive on javieraltez.com/projects.
Rust · TypeScript / Node.js · PHP / Laravel · Python · Go · C++ / Unreal · C# / Unity · WebGL / WebXR
Indie hacking as a habit: some become products, all become lessons. Always running experiments: generative art in Processing, Kaggle notebooks, ESP32 and Leap Motion tinkering, VR and procedural prototypes in Unreal and Unity, and Houdini scenes.
Reach me: javieraltez.com · X @j_altez · LinkedIn