L2 Application Support Engineer (Integration & Middleware)

Job Description:

Job Title: L2 Application Support Engineer (Integration & Middleware)

Core Stack:IBM CP4I (ACE MQ API Connect) Spring Boot Red Hat OpenShift.

1. Role Objective

The Integration Support is responsible for the health and reliability of the enterprise middleware layer. the L2 engineers to manage complex data flows between systems ensuring thatSpring Bootservices andIBM CP4Icomponents (MQ ACE APIC) are performant secure and highly available.

2. Strategic Technical Leadership

• End-to-End Traceability:tracing transaction flows from the API Gateway (API Connect) through the Enterprise Service Bus (ACE) to the backend Microservices (Spring Boot).
• Root Cause Analysis (RCA):Spearhead deep-dive investigations into middleware failures such as message losses in MQ synchronization errors in ACE or JVM crashes in Spring Boot.
• Platform Governance:Oversee the stability of integration components running onRed Hat OpenShift ensuring optimal resource (CPU/Memory) allocation and pod scaling.
• Security Enforcement:Manage and troubleshoot security protocols including Mutual TLS (mTLS) OAuth2 and JWE/JWS within the integration layer.

3. Detailed Technical Responsibilities

A. IBM Cloud Pak for Integration (CP4I)

• App Connect Enterprise (ACE):Troubleshoot message flows ESQL logic errors and adapter connectivity issues (SAP Database File).
• IBM MQ:Manage queue managers resolve channel retries and investigate dead-letter queues or message persistence issues.
• API Connect:Resolve issues related to API definitions security policies and Gateway (DataPower) latency.

B. Backend Microservices (Spring Boot)

• Performance Tuning:Analyze JVM thread dumps and heap dumps to resolve memory leaks or high CPU utilization in microservices.
• Connectivity Debugging:Troubleshoot Spring Boot integration with databases (JPA/Hibernate) and external messaging systems (JMS/Kafka).
• Log Aggregation:Utilize ELK/Splunk to correlate logs across multiple microservices to identify points of failure in a distributed architecture.

4. Technical Skill Set

• Integration Platforms:Mastery ofIBM CP4I(specifically ACE MQ and API Connect).
• Development Frameworks:Advanced knowledge ofJava and Spring Boot(Spring Integration Spring Cloud).
• Containerization:Expert-level proficiency inRed Hat OpenShiftand Kubernetes.
• Protocols & Standards:Expert understanding of REST SOAP JSON XML AMQP and MQTT.
• Monitoring Tools:Hands-on experience withIBM Instana Dynatrace or Prometheus/Grafana.

5. Qualifications

• Experience:5 years in Middleware or Integration Support
• Currently residing in KSA
• Complex Problem Solving:Ability to debug asynchronous communication patterns and distributed transactions.
• Education:Bachelors degree in Computer Science Software Engineering or a related field.
• Certifications (Preferred):IBM Cloud Pak for Integration Specialist Red Hat Certified Specialist in OpenShift Administration.

6. Key Performance Indicators (KPIs)

• Integration Uptime:Achieving 99.99% availability for critical middleware components.
• L2 Resolution Rate:Maximizing the number of integration issues resolved without escalation to L3 Engineering.
• MTTR:Reducing the time taken to identify and fix failures in the message delivery pipeline.

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