Agency
SESY.AGENCY — Senior Consulting Since 1999
Senior Minds.
Real Results.
SESY.AGENCY is the senior consulting arm of SESY.AI. Expert systems architecture, full-stack development, DevOps, AI strategy and digital transformation — executed exclusively by Senior Subject Matter Experts with 25+ years of field experience.
Senior Expertise.
Every Service.
Every engagement is executed by a Senior Subject Matter Expert. No juniors. No outsourcing. No shortcuts.
Full-stack systems design — cloud-native, zero-trust, Core Web Vitals optimized. From monolith to microservices, from concept to production.
Custom AI pipelines, LLM integrations, n8n automation workflows, Ollama local AI. Intelligent systems that work while you sleep.
GA4, GTM, Meta Pixel, BigQuery, Looker Studio. Full-stack data intelligence — senior-built, not automated.
cPanel/WHM, CloudLinux, PM2, CI/CD pipelines, DNS management, SSL, server hardening. Enterprise-grade infrastructure at accessible cost.
Ultra SEO — full meta, JSON-LD, hreflang, Core Web Vitals, schema. Google Ads campaigns senior-managed with real ROI accountability.
Production-ready web applications, CMS platforms, member portals, e-commerce, and custom tools. Built to last, built to scale.
The Senior
Behind Every Project.
25+ years of field experience across software engineering, systems architecture, DevOps, frontend/backend development, GA4, GTM, SEO, SEM, AI automation, and digital strategy. Master's degree in Library & Information Studies. Founder of SESY.AI, Mayan Library, and the Native International Initiative. Based in Tulúm, Quintana Roo, México — serving clients across North America, LATAM, Europe, and Asia.
Senior Process.
Every Time.
One senior expert. End-to-end accountability. No handoffs, no surprises.
Discovery & Audit
Senior architect reviews your systems, goals, and constraints. Full technical and strategic audit before a single line of code is written.
Senior Strategy
Custom solution design. Every technology choice justified. No off-the-shelf frameworks imposed without reason.
Build & QA
Senior-only execution. The same expert who designed the solution builds it, tests it, and signs off on it.
Deploy & Govern
Production deployment with full monitoring. Ongoing governance, analytics, and evolution as your business grows.
Questions.
Every project is executed by a Senior Subject Matter Expert with 25+ years of real field experience. No juniors, no outsourcing, no templates. The person who designs your strategy is the same person who builds it and governs it.
SESY.AGENCY serves SMEs and growth businesses with accessible senior services. SESY.SPACE is the invitation-only enterprise division for larger scope, higher complexity, and organization-wide transformation programs.
Senior consulting starts at $88 USD/hr with no scope cap. Monthly membership plans start from $3,333 MXN/mo for founding members — including hosting, 8h senior expertise, and full digital infrastructure.
Fill out the form below. Josef Sánchez reviews every request personally within 24 hours. No sales pitch — a genuine senior conversation about your project.
Ready for
Senior Expertise?
No obligation. Josef reviews every request personally. Response within 24 hours.