Mainframe Analyst Programmer - Payment Methods

• At least 3 years of experience as a Programmer or Programmer Analyst in a Mainframe environment.
• Practical experience with:
• COBOL
• IMS-DB / DL-I
• Experience in online transactional systems.
• Experience performing:
• Analysis of existing code.
• Impact analysis.
• Corrective/evolutionary development and maintenance.
• Preparation and execution of tests.
• Diagnosis and resolution of incidents.
• Functional knowledge of the financial sector.
• Understanding of online transaction processing principles.
• Ability to work autonomously and resolve complex problems.

Mainframe Programmer Analyst — Payment Methods (Processing)

We are looking for a Mainframe Programmer Analyst with experience in online transactional systems and Payment Methods to participate in a critical environment for processing financial operations.

The selected person will work on the analysis, development, maintenance, and incident resolution of Mainframe applications, with a high degree of autonomy following an initial knowledge transfer period.

• Analyze, develop, and maintain components in a Mainframe environment.
• Participate in the corrective and evolutionary maintenance of online transactional systems.
• Analyze existing code and perform impact analysis in response to functional or technical changes.
• Diagnose and resolve incidents in high-criticality online processes.
• Prepare and execute technical, functional, and integrated tests.
• Analyze traces, logs, messages, and financial operation data.
• Collaborate with functional, technical, architecture, and operations teams.
• Document changes, incidents, solutions, and tests performed.
• Work with autonomy, rigor, and an orientation toward service stability.

Modality: 100% remote

• JCL.
• IMS-DC.
• IMS Connect.
• DB2.
• z/OS Connect.
• TCP/IP.
• Integration between Mainframe and distributed systems.
• Exposure to or consumption of APIs and services.
• Transactional messaging.
• Monitoring, traceability, logs, and incident analysis.

• Processing of card operations in issuance or acquiring.
• Authorizations, denials, cancellations, returns, and reversals.
• Management of timeouts, retries, and fallback mechanisms.
• Financial messaging, especially ISO 8583.
• Integration with financial entities, processors, and authorizers.
• Operations in ATMs, POS, and e-commerce.
• Relationship between online processing and batch processes for closing, settlement, or reconciliation.

• EMV, PIN, ARQC, MAC, and HSM.
• Tokenization and processing with tokenized PAN.
• HCE, Visa, Mastercard, and xPay solutions.
• PCI DSS.
• 3D Secure.
• PSD2 and regulations applicable to payment methods.