Middleware Engineer

Stefanini · Poland, Poland, Poland

Location

Poland

Job Type

permanent

Posted

June 18, 2026

Job Description

Responsibilities:
Level 3 Operations & Technical Escalation (Core Responsibility)Act as the L3 escalation point for complex technical issues across the supported application portfolio, with particular focus on critical applications including: 
middleware runtimes hosting the supported applications (Apache Tomcat, JBoss, IIS, WebLogic / WebSphere) 
integrations with surrounding services (databases, AD, file shares, monitoring).
Own and drive resolution of: 
Major Incidents (P1/P2) with deep technical investigation and rapid recovery focus 
recurring incidents through Problem Management (root cause analysis and permanent fixes). 
Lead deep troubleshooting activities: 
middleware crashes, JVM out-of-memory, garbage collection issues 
thread pool and connection pool exhaustion 
application performance degradation and response time issues 
integration failures between in-scope appl...
        

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