Middleware Administrator- Irvine, CA

Location:

Irvine, CA (Need Local and its 100% Onsite role)

Duration: 12 Months Contract

We have below longterm job opening.

If you are interested , Please send your updated resume with below details.

Availability:

Expected rate all inc on c2c /1099 :

We are looking for a Middleware Administrator to be a critical driver of enterprise application migration and replatforming programs. You are a hands‑on middleware expert who understands how Java applications run across complex application server environments and can keep business‑critical systems stable during high‑pressure migration windows.

You thrive in environments where application availability, configuration accuracy, performance, and coordination across multiple teams are essential. You will play a key role in assessing current middleware platforms, migrating applications and configurations from source environments to target environments, and ensuring applications are fully operational after migration to an Open Stack‑based infrastructure.

Lead Middleware Migration

Activities:

Support the migration of Java‑based enterprise applications from one data center to another, ensuring application servers, configurations, dependencies, and runtime environments are properly transitioned.

Install and Configure Application Servers:
Install, configure, administer, and support IBM Web Sphere Application Server and JBoss environments, including application deployments, JVM settings, clusters, nodes, profiles, data sources, security settings, and related middleware components.

Support Java Application Platforms:
Work closely with application teams to understand Java application architecture, runtime requirements, dependencies, and integration points to ensure successful migration and post‑migration stability.

Perform Current‑State Assessment:
Analyze existing application and middleware architecture, document source environment configurations, and identify requirements for replatforming applications into the target Open Stack‑based environment.

Migrate Middleware Configurations:
Translate and migrate configurations from current source environments to target environments, ensuring consistency across application server settings, connection pools, JVM parameters, certificates, security configurations, and environment‑specific variables.

Tune Performance and Stability:
Perform application server performance tuning, JVM tuning, monitoring, troubleshooting, and capacity‑related analysis to ensure applications run reliably before, during, and after migration.

Validate Application Availability:
Conduct smoke testing, health checks, log reviews, and post‑cutover validation to confirm that applications are up and running successfully in the target environment.

Coordinate Across Teams:
Collaborate with multiple application, infrastructure, database, security, network, and project teams to plan migrations, resolve issues, and communicate technical status clearly.

Support Production Cutovers:
Provide hands‑on support during production migration windows, including after‑hours and weekend work as required for application cutovers, validation, troubleshooting, and rollback support.

Troubleshoot Complex Issues:
Act as an escalation point for middleware‑related incidents, including deployment failures, application startup issues, connectivity problems, JVM errors, performance degradation, and configuration mismatches.

Professional

Experience:

10+ years of enterprise middleware administration experience supporting large‑scale Java application environments, with strong exposure to data center migration or application replatforming initiatives.

IBM Web Sphere Expertise:
Deep hands‑on experience installing, configuring, administering, troubleshooting, and tuning IBM Web Sphere Application Server in enterprise environments.

JBoss Expertise:
Strong experience supporting JBoss application server environments, including deployments, configuration management, performance tuning, and troubleshooting.

Java Application Knowledge:
Solid understanding of Java application runtime behavior, JVM configuration, application deployments, logs, connection pools,…