L Application Support Engineer (Integration & Middleware)

About the Role

DXC Technology is seeking an L2 Application Support Engineer specializing in Integration & Middleware to join our team in Riyadh, Saudi Arabia. This full-time role is responsible for ensuring the health and reliability of the enterprise middleware layer, managing complex data flows between systems, and maintaining the performance, security, and high availability of Spring Boot services and IBM CP4I components.

Key Responsibilities

• Trace transaction flows end-to-end from the API Gateway (API Connect) through the Enterprise Service Bus (ACE) to backend Microservices (Spring Boot).
• Conduct deep-dive investigations into middleware failures, including message losses in MQ, synchronization errors in ACE, or JVM crashes in Spring Boot.
• Oversee the stability of integration components running on Red Hat OpenShift, ensuring optimal resource (CPU/Memory) allocation and pod scaling.
• Manage and troubleshoot security protocols such as Mutual TLS (mTLS), OAuth2, and JWE/JWS within the integration layer.

Technical Expertise: IBM Cloud Pak for Integration (CP4I)

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

Technical Expertise: Backend Microservices (Spring Boot)

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

Key Performance Indicators

• Achieve * availability for critical middleware components.
• Maximize the resolution rate of integration issues without escalation to L3 Engineering.
• Reduce the Mean Time To Resolve (MTTR) for failures in the message delivery pipeline.

Qualifications and Experience

Candidates should possess 5-10 years of experience in application support, specifically within integration and middleware environments. A strong understanding of Spring Boot services and IBM CP4I components (MQ, ACE, APIC) is required. Experience with Red Hat OpenShift, Mutual TLS, OAuth2, JWE/JWS, and log aggregation tools like ELK/Splunk is also essential.