Self-hosted n8n with PostgreSQL
Moving workflow data from a local database to managed PostgreSQL, and resolving an IPv4/IPv6 connection problem along the way.
- n8n
- Docker
- Google Cloud
- Supabase
- PostgreSQL
- Nginx
Martin Pernikov — AI systems & automation.
Projects and lessons from practice.
I build AI agents and workflows for research, information processing and content creation. Here I share my projects, technical decisions and lessons from practice.
- AI agents & n8n workflows
- Pleven, Bulgaria · Lyon, France
- Bulgarian · English · French
Selected work
Projects, from idea to operation
What each system does, how I built it and why it works that way.
A multilingual research workflow
Turning a question into a structured research response in the language of the request, using n8n and Perplexity.
- n8n
- Perplexity
- Webhooks
- LLM APIs
From Telegram to a Facebook post
Connecting a Telegram bot, an AI writing step and Facebook publishing in one content workflow.
- Telegram
- n8n
- Gemini
- Facebook API
An AI agent workspace
Connecting existing agent tools with task instructions, shared notes and cloud infrastructure for research and content work.
- OpenClaw
- Hermes
- Docker
- Discord
- Obsidian
Sharing what I learn
Public talks about AI
I explain how artificial intelligence works and where it can help in everyday life. I have presented these topics to students and a broader audience in Svishtov.
ChatGPT 5 for beginners
A guest talk for eighth-grade students at PDTG “Dimitar Hadzhivasilev” in Svishtov during EU Code Week. We discussed the development of AI, practical applications and responsible use.
Read the school’s accountAI in our daily lives
A public talk at Svishtov Youth Center about the history of AI and its role in education, business and communication. The event also included a certificate ceremony for students from six schools.
Read the RegNews coverageAreas of work
How I put systems together
I connect AI models, existing tools and the infrastructure they need to do useful work.
AI agents
- Tools and memory for agents
- Agent tasks and coordination
- Model and API integration
- Instructions and context design
Workflow automation
- n8n workflows
- Webhooks and API integration
- Processing multilingual requests
- Preparing structured data
Infrastructure
- Docker and Linux
- Google Cloud, Hetzner and Cloudflare
- Nginx and Caddy reverse proxies
- TLS and access controls
Data and operation
- PostgreSQL and Redis
- Background jobs and queues
- Logs and troubleshooting
- Documented setup and recovery
About me
The person behind the projects
I’m an independent AI Systems & Automation Architect based between Pleven, Bulgaria and Lyon, France. I work on AI agents, n8n workflow automation and the cloud infrastructure supporting them.
I’ve followed AI since 2019 and have worked independently on AI systems and automation since 2024. I use AI coding tools alongside existing platforms to build and integrate systems, investigate problems and document solutions.
I speak Bulgarian, English and French, and share my work through project write-ups and public AI talks in Bulgaria.