Linux & Infrastructure Foundations
Started in hands-on Linux server administration — troubleshooting, hosting support, and production maintenance — building the foundational ops knowledge that still drives everything today.
ranjan@ranjan.info:~$ cat /etc/profile.d/ranjan.sh
15 years at the root level
I started in Linux server administration in 2010 — not from a course, but from having to keep production systems alive. Over time I founded two hosting brands, managed thousands of servers, and wrote the automation that keeps them running. The tools on this site exist because I kept needing them and they didn't exist the way I wanted.
"Production systems taught me everything. Every migration that had to complete before market open, every security incident at 3 am, every hosting customer who needed their site back — those are where the real knowledge lives. I didn't study this. I lived in it."
ranjan@ranjan.info:~$ git log --oneline
The path so far
Control Panels, Performance & Security
Went deep on WHMCS, cPanel, and DirectAdmin — handling migrations, security incidents, performance tuning, and multi-server environments for clients who needed dependable operations.
Founder-Led Hosting Platforms
Founded MeraHost and cPanelFree — built and operated two real hosting brands from the server level up, pairing product thinking with hands-on Linux administration at scale.
AI Integration & Cloud Automation
Expanding into AI-powered infrastructure tools — building intelligent automation layers, API gateways, and monitoring systems that bring modern AI capabilities to production hosting environments.
ranjan@ranjan.info:~$ whoami --stack
What I work with
Infrastructure & Cloud
Linux AdministrationCloud ArchitectureDockerNginxApacheVPS / Dedicated ServersVirtualizationDirectAdmincPanelBackup SystemsCloudflareSecurity Hardening
Automation & DevOps
Bash ScriptingShell AutomationWHMCSMonitoring SystemsIncident ResponsePerformance TuningServer MigrationsProvisioning WorkflowsRedisMySQL
AI & Development
PHPOpenAI APIClaude APIGemini APIChrome ExtensionsIP IntelligenceREST APIsDNS ToolingSQLiteAI Automation Platforms
ranjan@ranjan.info:~$ faq --list
Common questions
What kind of work does Ranjan Chatterjee handle?
Emergency Linux server recovery, website malware removal, zero-downtime migrations, security hardening, performance optimization, email migration, infrastructure audits, managed server administration, control panel expertise, and DevOps automation — ten focused consulting services built on 15+ years in production Linux.
What hosting platforms does Ranjan work with?
cPanel/WHM, DirectAdmin, Plesk, WHMCS, CloudLinux, and Linux VPS/dedicated/cloud environments across AWS, DigitalOcean, and Hetzner. He is also the founder of MeraHost and cPanelFree, so panel-based hosting is operated experience, not just administered.
Is Ranjan available for infrastructure consulting?
Yes — for one-off projects, emergency response, and ongoing managed administration retainers. The contact page has request types for consultations, emergencies, audits, migrations, and recoveries; enquiries get a straight answer, usually within a business day.
Does Ranjan work with clients remotely and internationally?
Yes — all work is done remotely over provider consoles, SSH, and IPMI, for clients worldwide. Infrastructure work is console work: with proper access, everything short of physically swapping hardware happens from anywhere, with data-center remote-hands coordinated when on-site hands are genuinely required.
How do engagements with Ranjan work?
Four steps on every engagement: scope (a short brief or call), plan (steps, risks, rollback agreed before production is touched), execute (hands-on work with checkpoints), and handoff (documentation, access cleanup, and a written trail). Emergencies compress the same discipline into hours instead of days.
How is Ranjan's work priced?
Fixed quotes for defined projects like migrations, cleanups, and audits; fixed emergency rates agreed before recovery work starts; flat month-to-month retainers for managed administration. No open-ended hourly meters on defined work, and honest advice when the cheaper path is the better one.
What makes his background different from an agency?
He founded and operated two hosting companies — MeraHost and cPanelFree — meaning thousands of servers, real uptime accountability, and 3 am incidents as lived experience. Clients work directly with the engineer who does the work: one accountable person, not a ticket queue.
ranjan@ranjan.info:~$ ssh [email protected]
Let's build something solid
Clear scope, honest timelines, clean handoff — and infrastructure you stop having to think about.