About the Position

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.

We are actively seeking a Senior Payment Systems Engineer to join our banking technology team in Buenos Aires (CABA). This position is hybrid and requires on-site work 3 times a week in CABA.

Responsibilities

Develop, maintain, and enhance COBOL-based applications supporting core banking operations.
Design and implement solutions for accounts, savings, checking accounts, and time deposit products.
Support the development and maintenance of payment services and transaction processing systems.
Contribute to card-related platforms, including credit and debit card solutions.
Analyze business requirements and translate them into reliable mainframe solutions.
Collaborate with functional and technical stakeholders to support banking modernization initiatives.
Perform application maintenance, troubleshooting, testing, and performance optimization.
Ensure the stability, integrity, and availability of critical banking applications.

Requirements

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.

We Offer

Opportunity to work with a leading international engineering firm.
Be part of a team that combines engineering expertise with AI-native thinking.
Competitive benefits package.
Professional growth opportunities.

About the Company

At Avenga, people are at the core of our values. We provide equal opportunities regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to a respectful environment where everyone can be themselves, share their ideas, and feel that they belong.

Application Process

Send your CV: Tell us about your core skills and what you're looking for next.
Talent Call: Meet our Talent team to talk about your goals and experience while exploring our culture and the way we work.
Technical Interview: We'll explore your experience, strengths, and approach to work to see what we can build together.
Customer Interview: For some roles, you'll meet our customers to understand the outcomes your expertise can help create.
Welcome to Avenga: An offer is just the beginning. We welcome you to put your expertise into action and shape what's next together.

Senior Payment Systems Engineer

Job description