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Level 3 Linux Administrator

Level 3 Linux Administrator

Flexis IT

8 years

0 Lacs

sarita vihar delhi india

Posted:3 weeks ago| Platform:

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Skills Required

linux architecture design orchestration migration planning tuning troubleshooting management escalation security stability resolve analysis network monitoring strategies compliance selinux installation configuration optimization logging middleware software library authentication saml oauth deployment consistency development analyze lsof tcpdump metrics automation code ansible ubuntu patching hypervisors vmware vsphere kvm aws azure networking tcp ip stack bgp ospf postgresql mysql mongodb technology gcp

Work Mode

On-site

Job Type

Full Time

Job Description

Key Responsibilities

System Architecture & Deployment:

Design, implement, and manage highly available, scalable, and secure Linux infrastructure solutions (e.g., clustered services, load balancers, container orchestration platforms).
Lead the migration and upgrade of complex production environments.
Capacity planning and performance tuning for critical systems and applications.

Advanced Troubleshooting & Incident Management

Serve as the final escalation point for complex, system-wide performance, security, or stability issues that Level 1/2 staff cannot resolve.
Conduct deep-dive root cause analysis (RCA) for major incidents, including kernel-level tracing, memory/disk/network analysis, and performance bottlenecks.
Implement proactive monitoring and alerting strategies.

Security & Compliance

Implement and maintain robust security hardening standards (e.g., SELinux/AppArmor, firewalls, intrusion detection).
Ensure compliance with industry standards (e.g., HIPAA, PCI-DSS, ISO 27001).

3rd Party Application Lifecycle Management

Lead the installation, configuration, and optimization of complex, multi-tier third-party applications (e.g., monitoring suites like Prometheus/Grafana, logging platforms like ELK/Loki, middleware, or proprietary vendor software).
Securely integrate new applications into the existing infrastructure, managing dependencies, library requirements, and centralized authentication mechanisms (SSO/SAML/OAuth).
Develop and manage application configuration templates and deployment scripts to ensure consistency across development, staging, and production environments.
Troubleshooting and Performance Tuning: Deeply analyze application performance using tools like strace, lsof, tcpdump, and application-specific metrics. Work directly with application vendors to troubleshoot complex bugs, apply patches, and coordinate necessary system-level changes.

Automation & Infrastructure As Code (IaC)

Develop, maintain, and enforce automation standards using tools like Ansible (a plus)

Required Skills And Qualifications

Must-Have Experience

Operating SystemsExpert-level proficiency in multiple distributions (RHEL/CentOS, Ubuntu/Debian), including kernel tuning, patching, and compilation.Virtualization/CloudExpert knowledge of hypervisors (e.g., VMware vSphere, KVM) and extensive experience with a major public cloud provider (AWS, Azure, or GCP).NetworkingDeep understanding of advanced networking concepts (e.g., TCP/IP stack, BGP, OSPF, VLANs, software-defined networking, load balancing).DatabasesStrong familiarity with common databases (e.g., PostgreSQL, MySQL, MongoDB) and deployment/HA best practices.

🎓 Minimum Experience/Education

Education: Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent practical experience).
Experience: 8+ years
Work From office job
Location- Delhi/NCR

Skills: networking,gcp,aws,,hypervisor,linux admin,infrastructure,application configuration

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Level 3 Linux Administrator

Flexis IT

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sarita vihar, delhi, india

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Level 3 Linux Administrator