Linux Systems Engineer

As a Linux Systems Engineer & Middleware at our company, you will be responsible for the architecture, deployment, and optimization of our open-source stack and enterprise Linux environments. Your role will involve ensuring that our application-hosting platforms (Kafka, Apache, Nginx) are secure, high-performing, and resilient through advanced automation and proactive systems management. Key Responsibilities: - High Availability & DR: Lead DR Switchover/Failover testing and maintenance to ensure zero business interruption. - Environment Provisioning: Set up new Dev, UAT, and Production environments from scratch based on best practices. - Reporting: Provide monthly analytical reports on Availability, Change Management, Incidents, and Problem Management. - Housekeeping: Perform routine "hygiene" tasks, including log rotation, disk cleanup, and service audits. Technical Core Competencies: 1. Linux Operating System Management: - Installation & Config: Expertise in deploying enterprise distributions including Oracle Enterprise Linux (OEL) and RedHat (RHEL). - System Internals: Proficient in storage partitioning, managing boot processes (GRUB/systemd), and fine-tuning system services. - User & Security: Managing centralized user/group identities, setting granular POSIX file permissions, and ownership (Sudoers/Root management). - Package Management: Lifecycle management of software using YUM, DNF, or APT to ensure consistent environment versions. 2. Middleware & Messaging Services: - Web Servers: Advanced configuration and hardening of Apache HTTP Server and Nginx. - Event Streaming: Administration of Apache Kafka clusters, including managing producers, consumers, and cluster health. - Web Services: Managing HTTPS/SSL/TLS certificates and ensuring secure communication for all web-facing services. 3. Network & Security Operations: - Networking: Configuring IP addressing, SSH protocols, and managing host-based firewalls (iptables/firewalld). - Vulnerability Management: Proactive Vulnerability Patching and applying critical security fixes as per compliance requirements. - NFS & Storage: Managing Network File Systems (NFS) for cross-server file sharing and data persistence. 4. Performance, Monitoring & Automation: - System Health: Real-time monitoring using top, htop, iostat, and sar to analyze CPU, Memory, and Disk I/O bottlenecks. - Scripting: Utilizing Bash or Python to automate repetitive maintenance tasks, parse logs, and manage text-based configurations. - Capacity Planning: Forecasting resource needs to ensure the environment scales ahead of business demand. Candidate Requirements: - Experience: 5+ years in Linux Administration (RHEL/OEL) and Middleware management. - Certification: RHCSA/RHCE (RedHat Certified) or Oracle Linux Certified Professional is highly preferred. - Analytical Skills: Strong ability to perform Root Cause Analysis (RCA) on complex service failures. - Availability: Participation in an on-call rotation for critical production support. As a Linux Systems Engineer & Middleware at our company, you will be responsible for the architecture, deployment, and optimization of our open-source stack and enterprise Linux environments. Your role will involve ensuring that our application-hosting platforms (Kafka, Apache, Nginx) are secure, high-performing, and resilient through advanced automation and proactive systems management. Key Responsibilities: - High Availability & DR: Lead DR Switchover/Failover testing and maintenance to ensure zero business interruption. - Environment Provisioning: Set up new Dev, UAT, and Production environments from scratch based on best practices. - Reporting: Provide monthly analytical reports on Availability, Change Management, Incidents, and Problem Management. - Housekeeping: Perform routine "hygiene" tasks, including log rotation, disk cleanup, and service audits. Technical Core Competencies: 1. Linux Operating System Management: - Installation & Config: Expertise in deploying enterprise distributions including Oracle Enterprise Linux (OEL) and RedHat (RHEL). - System Internals: Proficient in storage partitioning, managing boot processes (GRUB/systemd), and fine-tuning system services. - User & Security: Managing centralized user/group identities, setting granular POSIX file permissions, and ownership (Sudoers/Root management). - Package Management: Lifecycle management of software using YUM, DNF, or APT to ensure consistent environment versions. 2. Middleware & Messaging Services: - Web Servers: Advanced configuration and hardening of Apache HTTP Server and Nginx. - Event Streaming: Administration of Apache Kafka clusters, including managing producers, consumers, and cluster health. - Web Services: Managing HTTPS/SSL/TLS certificates and ensuring secure communication for all web-facing services. 3. **Network