Senior Middleware Engineer / Lead Middleware Administrator

Responsibilities

• Middleware Platform Management
• Design, implement, configure, and maintain enterprise middleware platforms including IBM WebSphere Application Server (WAS ND), IBM WebSphere Liberty, IBM HTTP Server (IHS), IBM MQ, WebSphere Portal, Apache Tomcat, Oracle WebLogic, and JBoss/WildFly across development, staging, and production environments.
• Application Deployment
• Deploy, configure, and manage enterprise Java applications (EAR/WAR/JAR), perform application lifecycle management, rolling deployments, rollbacks, and post-deployment validation.
• WebSphere Administration
• Configure and administer WebSphere ND environments including Deployment Manager (DMGR), Node Agents, Clusters, JVMs, JDBC Providers, Data Sources, JMS resources, Shared Libraries, Virtual Hosts, and Work Managers.
• Middleware Security
• Configure SSL/TLS certificates, LDAP integration, LTPA, SSO, OIDC, OAuth 2.0, SAML, and API Gateway integration, and secure communication between enterprise applications.
• Performance & Availability
• Monitor JVM health, thread pools, connection pools, heap usage, garbage collection, and maintain High Availability (HA) environments with minimal service disruption.
• IBM MQ Administration
• Install, configure, administer, and troubleshoot IBM MQ Queue Managers, Queues, Channels, JMS resources, SSL-enabled MQ channels, and MQ client connectivity.
• Incident & Problem Management
• Troubleshoot production incidents including JVM crashes, hung threads, connection leaks, OutOfMemory errors, CORBA/IIOP issues, scheduler failures, and application performance bottlenecks. Perform Root Cause Analysis (RCA) and coordinate with vendors for issue resolution.
• Automation & Scripting
• Develop and maintain Shell (Bash) and wsadmin (Jython) scripts to automate middleware deployments, health checks, monitoring, and routine administration tasks.
• Monitoring & Health Checks
• Monitor middleware infrastructure using Dynatrace, PMI, GC logs, thread dumps, heap dumps, FFDC logs, and Linux system monitoring tools to ensure optimal system performance.
• Change & Release Management
• Prepare implementation plans, rollback procedures, risk assessments, CAB documentation, and execute production changes with minimal business impact.
• Patch & Upgrade Management
• Plan and implement WebSphere Fix Packs, Interim Fixes (IFixes), Java SDK upgrades, IBM Installation Manager updates, IBM MQ maintenance, and middleware security patching.
• Stakeholder Collaboration
• Work closely with application teams, infrastructure teams, database administrators, network teams, security teams, vendors, and business stakeholders to support enterprise middleware services.
• Documentation & Continuous Improvement
• Prepare Standard Operating Procedures (SOPs), operational runbooks, architecture documentation, and continuously improve middleware reliability, security and operational efficiency.
• EXPERIENCE & SKILLS REQUIRED
• Core Experience
• Minimum 10 years of experience in Middleware Administration with strong expertise in IBM WebSphere Application Server (WAS ND) within enterprise environments.
• Platform Expertise
• Hands-on experience with IBM WebSphere Application Server (WAS ND), IBM WebSphere Liberty, IBM HTTP Server (IHS), IBM MQ, WebSphere Portal, Apache Tomcat, Oracle WebLogic, and JBoss/WildFly.
• Middleware Technologies
• Strong knowledge of Deployment Manager (DMGR), Node Agents, Clustering, JVM tuning, JDBC Providers, Data Sources, JMS, JNDI, Shared Libraries, Virtual Hosts, and Enterprise Java applications.
• Security & Authentication
• Experience configuring SSL/TLS, LDAP, LTPA, Single Sign-On (SSO), OAuth 2.0, OpenID Connect (OIDC), SAML, and API Gateway integration.
• Linux Administration
• Strong experience managing middleware platforms on Red Hat Enterprise Linux (RHEL) and familiarity with IBM AIX and Windows Server environments.
• Automation
• Experience using Shell Scripting (Bash), wsadmin (Jython), Python, and Linux scripting to automate middleware administration tasks.
• Performance Tuning
• Hands-on experience analysing JVM performance, Garbage Collection (GC), Thread Dumps, Heap Dumps, FFDC logs, connection leaks, and performance bottlenecks.
• Monitoring Tools
• Experience using Dynatrace, IBM Health Center, Linux monitoring t

Additional Information

ROLE OVERVIEW We are seeking a highly experienced Middleware Engineer / Lead Middleware Administrator to join our Infrastructure & Middleware Platform team. This is a senior individual contributor or lead role responsible for architecting, managing, and evolving our enterprise middleware landscape - spanning IBM WebSphere Application Server, IBM WebSphere Liberty, IBM HTTP Server, IBM MQ, WebSphere Portal, Apache Tomcat, Oracle WebLogic, and JBoss/WildFly. The successful candidate will bring a minimum of 10 years of hands-on experience and will play a pivotal role in ensuring platform stability, security, and performance across MCC's enterprise environment.

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