Application Support Executive

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Application Support Executive – Payments (L2/L3 Prod Support)

Location: Morristown, NJ (
100% Onsite
)

Duration: 6-Month Contract

Experience: 6–8 Years

We are seeking an Application Support Executive with strong L2/L3 production support experience in the payment card domain
. The role focuses on supporting mission‑critical payment applications on Windows OS
, ensuring high availability, compliance, and secure transaction processing.

• Provide L2/L3 production support for payment applications, ensuring SLA adherence and minimal downtime
• Monitor and resolve issues related to transaction failures, system outages, and performance bottlenecks

• Support end-to-end credit/debit card transaction lifecycle
  : authorization, clearing, settlement, and reconciliation
• Troubleshoot integrations with card networks (Visa, Mastercard, Amex), acquirers, and issuers
• Investigate and resolve disputes and chargebacks
• Ensure compliance with card network rules (Visa TCR, Mastercard dispute processes)
• Monitor fraud alerts and transaction patterns
• Support fraud prevention solutions such as tokenization, 3D Secure, and risk scoring

• Perform application patching, upgrades, and configuration changes
• Analyze logs, debug issues, and conduct root cause analysis (RCA)
• Troubleshoot ISO 8583 messages, EMV transactions
  , and fraud‑related alerts

• Use tools like Splunk, Dynatrace to monitor system health and transaction success rates
• Generate operational and compliance reports for stakeholders
• Work closely with development, QA, infrastructure, and fraud teams
• Communicate effectively with internal teams, merchants, banks, and external partners

• Ensure adherence to PCI DSS, EMV, PSD2, GDPR standards
• Maintain detailed documentation for incidents, resolutions, and configurations

• 6–8+ years of application support experience
• 5+ years in payment systems
  , specifically credit/debit card processing
• Strong experience in L2/L3 production support on Windows OS
• Hands‑on troubleshooting of applications built on Java, .NET, or Python
• Strong SQL/Oracle skills for transaction and dispute analysis
• Experience with APIs (REST/SOAP) and middleware (Kafka, Rabbit
  
  MQ)
• In‑depth knowledge of ISO 8583, EMV
  , and payment protocols
• Strong understanding of acquirer/issuer workflows
• Experience with chargebacks, disputes, and fraud management
• Familiarity with Service Now, Jira
  , and monitoring tools
• Experience with cloud platforms (AWS/Azure/GCP) and containers (Docker, Kubernetes)
• Excellent analytical, communication, and problem‑solving skills