Sr. Linux/Unix Engineer for Vulnerabilities Patching

Dice is the leading career destination for tech experts at every stage of their careers. Our client, Xoriant Corporation, is seeking the following. Apply via Dice today!

Senior Linux (UNIX) Application Support Engineer (10 15 Years Experience)

W2/IC Only

Role Summary

We are seeking a highly experienced Senior Linux/UNIX Application Support Engineer with deep expertise in supporting enterprise-grade applications running on Linux environments. The ideal candidate has 10 15 years of hands-on experience managing installation, configuration, upgrades, patching, troubleshooting, and operational stability of mission-critical middleware, databases, and infrastructure services.

This role is focused on production stability, lifecycle management, automation of maintenance activities, and cross-platform application support in large-scale enterprise environments.

Key Responsibilities

Application Installation & Lifecycle Management

• Install, configure, and maintain enterprise applications on Linux/UNIX systems
• Perform version upgrades, migrations, and patch management across production and non-production environments
• Validate compatibility between application layers, OS versions, and dependent libraries
• Maintain installation standards, runbooks, and deployment documentation
  
  

Patching & Upgrades

• Plan and execute regular patch cycles for applications and middleware
• Coordinate OS-level dependencies with Linux system administrators
• Perform rollback planning and disaster recovery validation for upgrades
• Ensure compliance with security and vendor patch requirements
  
  

Production Support & Incident Management

• Provide Level 2/Level 3 production support for Linux-hosted applications
• Troubleshoot performance issues, crashes, memory leaks, and connectivity problems
• Conduct root cause analysis (RCA) for major incidents
• Work with engineering, database, and infrastructure teams to resolve critical outages
  
  

Automation & Tooling

• Automate installation, patching, and health checks using scripting (Bash, Python, Ansible, etc.)
• Improve deployment pipelines and reduce manual intervention
• Integrate monitoring and alerting systems for proactive issue detection
  
  

Performance & Capacity Management

• Analyze application performance and system resource utilization
• Tune JVM-based and database-driven applications
• Assist in capacity planning and scalability assessments
  
  

Collaboration & Documentation

• Work closely with developers, DBAs, network engineers, and security teams
• Maintain operational documentation, SOPs, and runbooks
• Participate in on-call rotations for critical systems
  
  

Required Experience & Skills

• 10 15 years of experience in Linux/UNIX system or application support
• Strong expertise in enterprise application installation, patching, and upgrades
• Deep understanding of middleware, databases, and distributed systems
• Strong troubleshooting skills across OS, application, and network layers
• Experience with automation tools and scripting (Bash, Python, Ansible)
• Familiarity with monitoring/logging tools (e.g., Splunk, Prometheus, ELK stack)
• Experience working in large enterprise or financial services environments preferred
  
  

Common Linux/UNIX Enterprise Application Stack (Top 20)

Below is a representative list of widely used enterprise applications and infrastructure products supported in Linux environments:

Databases

• IBM Db2
• PostgreSQL
• MySQL
• Oracle Database
  
  

Messaging & Integration

• IBM MQ
• RabbitMQ
• Apache Kafka
  
  

Web & Application Servers

• Apache HTTP Server
• NGINX
• Apache Tomcat
• Red Hat JBoss
• Oracle WebLogic Server
• IBM WebSphere
  
  

Caching & In-Memory Systems

• Redis
  
  

Search & Observability

• Elasticsearch
• Logstash
• Kibana
  
  

Infrastructure & DevOps

• Kubernetes
• Docker
• Ansible