02 capability matrix

What I reach for, and roughly why.

Not a proficiency chart — just the tools I have actually shipped and supported.

01 Applications

Mostly MERN, and it ships

MERN · React · Node.js · Express · MongoDB · Vite · Tailwind · REST APIs · GraphQL · WebSockets · Electron · Laravel

02 Integration

Getting two systems to agree on a number

EDI · X12 · AS2 · ERP integration · Körber One · Dynamics NAV · Webhooks · SOAP

03 AI

Models, and where they earn their place

Ollama · LLM APIs · RAG · Prompt engineering · AI-assisted development

04 Languages

Arguing with computers in several dialects

JavaScript · TypeScript · HTML / CSS · Python · PowerShell · Bash · C# / .NET · PHP · SQL

05 Databases

Where the truth is supposed to live

MongoDB · PostgreSQL · MSSQL · MySQL · Redis · SQLite

06 DevOps

Making the same mistake only once

Docker · Kubernetes · CI/CD · Ansible · Terraform · Caddy · nginx · Git

07 Cloud

Someone else’s computer, billed hourly

Azure · AWS · Linode · Entra ID · M365 · Cloudflare

08 Infrastructure

The layer everything else assumes is fine

Network architecture · Systems architecture · Proxmox · Linux · Windows Server · Active Directory · VMware ESXi · Hyper-V · TrueNAS · Networking / VLANs · ZFS · Veeam · Zabbix

09 Hardware

Things with screws in them

Dell PowerEdge · Lenovo ThinkSystem · SAN / shared storage · Cisco Meraki · HP Aruba · SonicWall · MikroTik · UniFi · Raspberry Pi · Rack builds · UPS / power · Structured cabling