Sr. SW Engineer - Payment Applications

About the role

Visa is looking for Senior Software Engineers to design and build secure, scalable payment applications for its Agentic Commerce initiatives. The engineer helps create reliable services that let AI agents support commerce and payment experiences, while keeping security, customer trust and payment integrity central. About 60-75% of the time is spent coding, working with code, data and modern tools including AI-assisted development, cloud services and automation frameworks.

Key responsibilities

• Work with stakeholders to interpret requirements and incorporate feedback into designs or fixes.
• Verify assumptions, escalate design issues and contribute to project estimation.
• Take part in system design and architecture, refine code plans and contribute to design documentation.
• Develop, implement and maintain code, applying coding patterns, guidelines and best practices.
• Use debugging tools, take part in code reviews and create test plans and procedures.
• Respond to support requests during on-call rotations, troubleshooting and deploying fixes.
• Keep up to date through training to improve availability, reliability, efficiency, observability and performance.

Required profile

• At least 3 days in the office per week; exact expectations confirmed by the hiring manager.
• Basic: 2+ years of relevant experience and a Bachelor's degree, or 5+ years of relevant experience.
• Preferred: 3+ years with a Bachelor's degree, or 2+ years with an advanced degree (Master's, MBA, JD, MD).
• Experience in web or mobile application development, system design, debugging, code review, test planning and support incident response.

Required skills

• Core Java, JEE, RESTful services, object-oriented design and design patterns.
• Back-end technologies such as JDBC, JMS, Spring, Hibernate and JMX.
• PostgreSQL and SQL, including relational database design.
• Apache Kafka and Hazelcast.
• Containerised applications and CI/CD, including Jenkins.
• Git and GitHub.
• Preferred: test automation (Karate), payments industry experience, agentic commerce and AI agent exposure, and secure agent-initiated payment flows.