Senior Java L3 Application Support Engineer - Core Banking & Payments

Job Title

Provide Level 3 application support for critical banking platforms, including payments, clearing, settlement, digital banking, and related transaction-processing systems.

Lead troubleshooting and resolution of high-severity production incidents affecting transaction message flows, ledger processing, payment gateways, and other critical banking services.

Perform code-level debugging of multi-threaded Java applications to identify and resolve complex application defects, data discrepancies, memory leaks, concurrency issues, and performance bottlenecks.

Conduct detailed Root Cause Analysis (RCA) for critical production incidents and implement appropriate corrective and preventive actions.

Design, develop, test, and deploy application enhancements, API hotfixes, patches, and structural bug fixes within an Agile Software Development Life Cycle (SDLC).

Analyze application logs, transaction flows, database execution paths, and system behavior to identify and resolve production issues.

Monitor transaction processing and scheduled Unix/Linux batch jobs to identify failed transactions, processing errors, and abnormal system behavior.

Troubleshoot and support enterprise Java applications developed using Spring, Spring Boot, Hibernate, and microservice-based architectures.

Investigate and resolve application integration and financial messaging issues involving RESTful APIs, Apache Camel, JMS, Kafka, ISO 20022, SWIFT, and related technologies.

Perform advanced database troubleshooting using SQL across Oracle, PostgreSQL, and/or PL/SQL environments, including complex queries, joins, data validation, and indexing analysis.

Use application monitoring and observability tools such as Splunk, Dynatrace, Datadog, and Grafana to analyze live production issues and application performance.

Support application uptime, availability, reliability, performance, and security for business-critical banking platforms.

Follow established ITIL incident-management, problem-management, and change-management processes.

Apply secure coding and application support practices to protect sensitive banking and financial data.

Collaborate with development, infrastructure, database, operations, business, and other technology teams to resolve production issues and implement application changes.

Minimum 5+ years of experience in enterprise Java application development, application support, production support, or a related technical role.

Hands-on experience with Java 8/11/17+, including multithreading, collections, object-oriented programming concepts, code-level debugging, and application troubleshooting.

Hands-on experience with enterprise Java frameworks and technologies such as Spring, Spring Boot, Hibernate, and/or microservices.

Experience working with RESTful APIs and application integrations.

Experience with messaging and integration technologies such as Apache Camel, JMS, Kafka, ISO 20022, and/or SWIFT.

Advanced experience with SQL and relational databases, including complex querying, joins, data analysis, troubleshooting, and indexing validation using Oracle, PostgreSQL, and/or PL/SQL.

Experience troubleshooting live production systems using monitoring and observability tools such as Splunk, Dynatrace, Datadog, and/or Grafana.

Experience performing Root Cause Analysis, production incident troubleshooting, code-level debugging, and application defect resolution.

Experience supporting Unix/Linux-based environments, including troubleshooting scheduled batch processes and application jobs.

Experience working within Agile SDLC, incident-management, change-management, and secure coding practices.

Minimum 1+ year of experience working within Banking or Financial Services, including Investment Banking, Retail Banking, Corporate Banking, Wealth Management, Payments, or a related financial-services environment.

Experience supporting core banking or payment-processing platforms.

Experience supporting clearing, settlement, ledger-processing, or digital-banking applications.

Experience working with ISO 20022 or SWIFT financial messaging standards.

Experience supporting highly available and business-critical financial applications.

Experience working with ITIL-based incident, problem, and change-management processes.

Experience troubleshooting performance issues involving multithreading, concurrency, memory utilization, and high-volume transaction processing.