Kestro
AI assistantA local AI assistant that can operate your browser, files, terminal and connected tools.
view product →aboutDaniel Martínez Marqués
About Daniel
An independent developer and software builder from Spain — building software, experimenting with AI, writing about the process and growing a development studio.
- based
- Spain · working worldwide
- role
- Developer & software builder
- builds
- Software · AI tools · websites · automation
- writes
- Technical articles, build logs & research
- studio
- NexoWave — digital development
I'm Daniel — a developer and software builder. I turn ideas into working software, from local AI assistants and security tooling to websites and automation systems.
Most of my work happens in three places: my tools (software products I design and build myself), NexoWave (my client-facing development studio) and this blog (where I document what I learn).
I'm based in Spain and work worldwide. I write in English because that's the language of the audience I build for.
// what I work on
AI
practical agent apps, local models, AI tooling
Cybersecurity
LLM red teaming, web security auditing
Web
fast sites and web applications
SEO & GEO
deterministic auditing, AI-search readiness
Automation
workflows, APIs and glue between tools
Products
software built to be used, bought and maintained
// the software I build
all tools →AMAS
Security toolingAI Model Attack Simulator — a red-teaming CLI that probes LLM and agent endpoints for common attack patterns.
view product →CyberAudit Pro
Security frameworkA professional web security auditing framework that inspects sites and services for common weaknesses.
view product →SEO Engine
SEO toolingA deterministic, rule-based SEO audit and analysis tool — replace guesswork with transparent, reproducible findings.
view product →// the path
- 2025Started seriously learning software development — experimenting across languages and building personal projects.
- 2026Founded NexoWave, started building my own software tools (Kestro, AMAS, CyberAudit Pro, SEO Engine) and launched this site and blog.
// honest and still being written
// work with me
Want to build something?
Work directly with the developer who writes the code — websites, software, AI and automation.