Save time
Move repetitive steps into dependable workflows.
Automation thatsimply works.
I build reliable systems that handle repetitive work for you.
What would you like to know?
Reduce errors
Add validation, logging, and clear failure handling.
Connect your tools
Keep information moving between the apps you already use.
Selected work
Practical systems, explained simply.
Each project focuses on a real operational need, maintainable implementation, and clear handoff.
WhatsApp Receipt Processor
An n8n workflow that receives receipt images from WhatsApp, filters invalid webhook events, extracts key data with AI, and sends structured output to Google Sheets.
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n8n, WhatsApp Cloud API, OpenAI, Google Sheets, Webhooks
Centralized Error Handling System
A reusable n8n error-handling layer that captures failed executions, maps useful error details, logs issues, and sends priority alerts.
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n8n, Error Trigger, Google Sheets, Email alerts
Self-Hosted n8n Automation Environment
A VPS-based n8n setup with Docker Compose, domain/HTTPS setup, login protection, backups, and version-aware maintenance practices.
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n8n, Docker Compose, Ubuntu VPS, Caddy, DigitalOcean
AI Assistant Operations Dashboard
Local AI assistant tooling experiments plus a Mission Control-style dashboard for monitoring assistant/system activity, tasks, memory surfaces, backups, and health signals.
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Local AI assistant tooling, Obsidian, Next.js, React, TypeScript, Tailwind CSS
About Mark
Technical enough to be dependable. Clear enough to be useful.
Mark Rivera is an AI Automation Specialist focused on practical n8n workflows, AI-assisted automation, data handling, and self-hosted systems.