IT & AI Consultant
Roberth Rajala
I design, build, and operate custom software and production infrastructure. Specializing in web applications, infrastructure architecture, and AI systems. Every system I build runs in production — including my own.
Expertise
What I Do
Custom Software
Web applications, internal tools, APIs, and workflow automation. Built around how your business operates — no feature bloat, no vendor lock-in.
Infrastructure Architecture
High-availability systems for cloud, on-premise, or hybrid. Containerized with Docker and Proxmox, replicated, backed up, monitored 24/7.
AI Systems
AI agents, automation pipelines, and self-learning systems. Persistent collaborators that manage, document, and improve infrastructure autonomously.
IT Consulting
Systems integration, network design, security baselining. Straight answers on what to build, what to buy, and what to leave alone.
Selected Work
Projects & Systems
Production Infrastructure Platform
View Details →Self-hosted ecosystem: 50+ production services, 65+ containers across Proxmox VMs. Automated deployments, zero-trust access, and public status monitoring. 99.9% uptime measured live.
OpenClaw AI Co-Pilot
Read More →Persistent AI collaborator that manages, documents, and improves the entire infrastructure autonomously. Deep research, task tracking, calendar integration, email triage, and self-learning capabilities.
Network Segmentation & Security
Read More →From flat network to proper VLAN segmentation: 4 isolated networks (management, production, IoT, guest), Pi-hole for network-wide DNS filtering, Unbound for recursive DNS, and Tailscale mesh VPN for zero-config secure access.
IPMI Fan Control
View Source →Python tooling for Dell PowerEdge servers: manages fan curves over IPMI, quiet operation at idle, full cooling under load, automatic recovery after BMC resets. Published as open source.
EU-Utility Toolset
View Source →Comprehensive toolset integrating with Entropia Nexus: data pipelines, automation, and a companion icon-extraction utility. Built for power users who need programmatic access to game data.
Background
Experience
Independent IT & AI Consultant
LemonLink
Designing and operating custom software, infrastructure architecture, and AI systems for clients and personal projects. Specializing in production systems that run 24/7 with public monitoring.
Systems Administrator & Developer
Various Engagements
Built and maintained internal tools, automated workflows, and managed infrastructure for small businesses. Focused on reducing manual work and improving reliability.
Open Source Contributor
git.lemonlink.eu/impulsivefps
Published tools for infrastructure management, game data extraction, and automation. Active contributor to the self-hosted and homelab community.
Free Utilities
Tools I Host
Client-side utilities available to everyone. No data leaves your browser; nothing is tracked.
IT-Tools
50+ developer utilities: formatters, encoders, generators, converters
CyberChef
Data transformation: encryption, encoding, parsing, forensics
Draw.io
Flowcharts, diagrams, network mapping
Service Status
Live public status for all services
Retro Arcade
Classic DOS games in the browser
Minecraft Server
Java + Bedrock whitelist server
Get in Touch
Let's Work Together
Available for consulting engagements, custom software projects, and infrastructure architecture. Based in Sweden, working remotely worldwide.