Hi there, I'm Jacob Mathew
Designing resilient cloud infrastructure and automating systems that scale. 6+ years managing enterprise Linux environments, AWS deployments, container clusters, and mission-critical mail infrastructure.
Engineering Resilient Cloud & Linux Architectures
Transforming complex infrastructure challenges into automated, resilient architectures.
I'm Jacob Mathew, a passionate Linux System Administrator based in Kerala, India. With over 6+ years of experience managing Linux/Windows servers and hybrid infrastructures across on-premise data centers and AWS cloud, I specialize in infrastructure automation, performance tuning, and bulletproof security hardening.
My deep expertise spans custom AMI generation, VPS fleet management, high-volume mail server clusters (Postfix, Exim, Dovecot), container orchestration with Docker/Kubernetes, and implementing CIS benchmark compliance across AlmaLinux, Ubuntu, and RedHat enterprise systems.
Cloud Infrastructure
Designing multi-tier scalable AWS VPCs & EC2 fleets
Linux Administration
Kernel tuning, package management & system hardening
Security & Hardening
CIS benchmarks, SSL/TLS, firewalls & access control
Mail Server Clusters
High deliverability Postfix, Dovecot, DKIM/SPF/DMARC
Containers & K8s
Docker orchestration, microservices & deployments
Infrastructure Automation
Ansible playbooks & Terraform IaC provisioning
Version Control
Git workflows, branch strategies & code deployment
CI/CD Pipelines
Jenkins pipelines, automated testing & releases
Hosting & Panels
cPanel, DirectAdmin, Plesk, Nginx & Apache
Shell Scripting
Advanced Bash & Python automation scripts
Telemetry & Monitoring
Prometheus, Grafana, Nagios & Zabbix alerts
Network Engineering
DNS routing, VPNs, reverse proxies & load balancing
Skills & Technology Stack
Production-proven expertise in cloud architecture, operating systems, and automation.
AWS Cloud Services
Linux (Ubuntu / Alma / RHEL)
Docker & Containerization
Kubernetes Orchestration
Ansible Automation
Terraform (IaC)
Bash & Shell Scripting
Python Automation
Mail Servers (Postfix/Dovecot)
Web Servers (Nginx/Apache)
CI/CD & Jenkins
Monitoring (Grafana/Prometheus)
Work Experience & Journey
Demonstrated success across enterprise IT environments, cloud hosting, and MSP infrastructure.
System Administrator
Managing enterprise-scale Linux server fleets, cloud deployments on AWS, and architecting automated self-healing infrastructure.
- Architected multi-region AWS cloud solutions reducing downtime by 40%
- Implemented automated Ansible configuration management across 100+ servers
- Streamlined enterprise mail server clusters with zero spam leakage and DMARC enforcement
System Administrator
Administered Linux hosting infrastructure, hypervisors, and customer support engineering.
- Managed high-density cPanel/DirectAdmin clusters with 99.9% uptime SLA
- Configured custom kernel parameters and DDoS mitigation firewalls
- Automated recurring maintenance and disaster recovery backups via Bash
System Administrator
Handled network architecture, firewall policies, VPS provisioning, and server migration projects.
- Executed zero-downtime database and web server migrations
- Configured secure VPN tunnels and internal monitoring networks
Cloud Engineer & Systems Engineer
Designed, deployed, and secured AWS cloud infrastructure for enterprise client applications.
- Provisioned auto-scaling EC2 groups, RDS databases, and S3 storage lifecycle policies
- Hardened server operating systems to adhere to strict security compliance standards
Facility Management Engineer
Maintained IT infrastructure, server room hardware, network switches, and critical technical support.
- Managed hardware diagnostics, RAID configurations, and disaster recovery readiness
Highlighted Projects
Scalable infrastructure, automation suites, and enterprise deployment blueprints.
CloudOps Auto-Healer & Fleet Monitor
An autonomous infrastructure health-check daemon that detects failing services on Linux instances and executes automated remediation playbooks.
Enterprise Secure Mail Cluster
High-deliverability mail server cluster utilizing Postfix, Dovecot, Rspamd, ClamAV, DKIM, DMARC, and automatic Let's Encrypt renewal.
Kubernetes Microservice GitOps Pipeline
Complete CI/CD infrastructure automating Docker container builds, security vulnerability scanning, and declarative Kubernetes cluster deployments.
Server Hardening & CIS Benchmark Script
Automated Bash suite that audits and applies CIS Level 1 & 2 security hardening guidelines across AlmaLinux, Debian, and Ubuntu systems.
Certifications & Badges
Linux Web Terminal
Type commands directly to query sysadmin telemetry, bio, or trigger easter eggs.
Let's Connect & Collaborate
Whether you have an infrastructure opportunity or a technical consultation, let's talk.
Contact Channels
Feel free to reach out directly via email, connect on LinkedIn, or transmit a message below.