Senior Linux & Database Infrastructure Engineer

Job Description Roles & Responsibilities We are seeking an experienced Senior Linux & Database Infrastructure Engineer to drive the reliability, scalability, and performance of our mission-critical, large-scale telecom environment. In this high-impact role, you will transition from routine operational maintenance to architecting, optimizing, and managing high-availability database clusters, containerized environments, cloud virtualization, and enterprise Linux platforms. Key Responsibilities 1. Database Administration & Optimization Architect, deploy, and maintain high-availability relational database infrastructure (Oracle, PostgreSQL, GaussDB, or MySQL) in active-active/active-standby configurations. Perform advanced database tuning, query optimization, indexing strategies, table partitioning, and capacity planning. Manage complex database backups, point-in-time recovery (PITR), disaster recovery (DR) drills, and multi-terabyte data migration projects under tight SLAs. 2. Cloud & Container Orchestration (OpenStack & Kubernetes) Administer, scale, and troubleshoot enterprise OpenStack environments (compute nodes, Glance, Nova, Neutron networking, and Cinder storage). Manage, configure, and operate production-grade Kubernetes clusters and Docker container environments for microservice deployments. Oversee container networking (CNI), storage interfaces (CSI), ingress controllers, and service meshes across hybrid infrastructure. 3. Enterprise Linux & Infrastructure Operations Serve as the senior administrator for enterprise Linux platforms (RHEL, CentOS, Ubuntu Enterprise), including deep kernel parameter tuning, LVM management, and storage/SAN integration. Perform L2/L3 incident handling, advanced system troubleshooting, and deep-dive Root Cause Analysis (RCA) for platform outages. Automate infrastructure provisioning, configuration management, and patching using Ansible, Terraform, Python, and Shell scripting. 4. Advanced Networking & Security Integration Configure and troubleshoot complex Linux networking stacks, including routing tables, VLAN tagging, bonding, iptables/firewalls, and Open vSwitch (OVS). Manage system-level network security, SSL/TLS certificate lifecycles, SSH hardening, and user access management (IAM/SUDO policies). Desired Candidate Profile Required Qualifications Education: Bachelor's degree in Computer Science, Telecommunications Engineering, Information Systems, or a related technical field. Experience: 5+ years of hands-on professional experience in Enterprise Systems Administration, Database Administration, and Infrastructure Engineering within large-scale production environments (Telecom experience preferred). Technical Expertise Advanced Linux Administration: Deep expertise in Linux CLI, systemd, kernel optimization, memory management, storage subsystems (SAN/NAS/NFS), and storage management. Database Administration & SQL: Mastery in relational database management systems (RDBMS), SQL execution plan analysis, high availability (RAC/Data Guard/Replication), schema partitioning, and automated backup strategies. Cloud & Virtualization: Strong hands-on experience managing OpenStack tenants/infrastructure and core virtualized components. Container Orchestration: Direct experience building and managing Docker containers and production Kubernetes clusters. Enterprise Networking: Solid grasp of TCP/IP, OSI layers, DNS, routing protocols, NAT/CGNAT, firewalls, and network troubleshooting utilities (netstat, ss, tcpdump). Automation & IaC: Proficiency in Shell scripting, Python, and configuration management tools (e.g., Ansible). Preferred Certifications (Highly Regarded) Certified Kubernetes Administrator (CKA) or Certified Kubernetes Application Developer (CKAD) Red Hat Certified Engineer (RHCE) or Red Hat Certified Architect (RHCA) Oracle Certified Professional (OCP) or equivalent RDBMS certification Certified OpenStack Administrator (COA) Cisco Certified Network Associate (CCNA) / Professional (CCNP) Company Industry TelecomISP Department / Functional Area Engineering Keywords Senior Linux & Database Infrastructure Engineer Get real-time job updates only on our App