Avenga is an international engineering firm helping businesses operate with AI at the core. With 6,000+ experts worldwide, we combine engineering expertise with AI-native thinking to turn ambitious ideas into real-world impact across industries, technologies, and markets.
At the core of the role
In Buenos Aires (CABA) within the Banking & Financial Services industry, we are actively seeking a Senior Mainframe Developer (COBOL) to strengthen our banking technology team. Your primary responsibility will involve developing, maintaining, and enhancing mission-critical mainframe applications supporting core banking products and payment ecosystems. You will contribute to high-impact initiatives across accounts, deposits, cards, and payment services, ensuring reliable and scalable solutions that support business operations and customer transactions.
This position is hybrid and requires on-site work 3 times a week in CABA.
Core skills you’ll bring
- Proven experience as a Senior Mainframe Developer within the banking or financial services industry.
- Strong hands-on experience with COBOL development in both Batch and Online environments.
- Solid knowledge of DB2, CICS, JCL, and IBM Mainframe technologies.
- Experience working with TSO/ISPF and SQL.
- Strong understanding of core banking systems and transaction processing.
- Functional knowledge of accounts, savings accounts, checking accounts, and time deposit products.
- Experience supporting payment services and banking transaction platforms.
Nice-to-have
- Experience with card processing systems and payment ecosystems.
- Knowledge of merchant payments, acquiring, and processor integrations.
- Experience with credit card and debit card platforms.
- Understanding of chargeback and merchant settlement processes.
- Previous experience working in large-scale banking transformation initiatives.
The impact you'll create
- Develop, maintain, and enhance COBOL-based applications supporting core banking operations.
- Design an
📌 Senior Payment Systems Engineer (Buenos Aires)
🏢 avenga
📍 Buenos Aires
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