Sr Software Engineer, Disputes

Job Description And Responsibilities

Join Pismo’s Disputes squad, responsible for building and evolving a highly reliable platform that manages the full chargeback lifecycle, from dispute creation through pre-arbitration and resolution, supporting issuer efficiency, automation, and network compliance.

You’ll work in a high-availability, high-compliance environment, developing APIs and services that connect issuers to major payment networks and keep issuer systems synchronized through real-time events. The team also owns Protection Bulletin, a critical capability that ensures transaction continuity during issuer unavailability via stand-in authorizations and automatic synchronization once the issuer is back online.

What You’ll Do

• Develop and maintain services using Golang (and Java/JVM technologies when needed), following clean code and strong software engineering practices.
• Design and implement scalable, reliable, and secure microservices on AWS, evaluating trade-offs across performance, resilience, maintainability, and operational complexity.
• Collaborate closely with engineering and product partners to translate business requirements into effective technical solutions.
• Build event-driven solutions leveraging AWS services such as SQS, SNS, DynamoDB, S3, and EventBridge.
• Use Terraform to provision, evolve, and maintain cloud infrastructure following Infrastructure-as-Code best practices.
• Write and maintain automated tests (unit and integration) to ensure code quality and system robustness.
• Work with SQL and large SQL databases that provide the persistence layer for our applications, understanding their limitations and operational characteristics at scale.
• Monitor service health and performance using observability practices and tools (metrics, logs, alerts), proactively identifying and resolving issues in distributed systems.
• Participate in code reviews and provide constructive feedback focused on code quality, security, scalability, and cross-domain impact.
• Contribute to architectural and technical discussions that support continuous improvement and long-term platform evolution.

This is a remote position. A remote position does not require job duties be performed within proximity of a Visa office location. Remote positions may be required to be present at a Visa office with scheduled notice.

Qualifications

For this role, you must be based in Brazil.

Language Skills

Proficiency in English at B1 level or above (Intermediate)

Technical Skills

• Golang hands-on experience and ability to work with Java/Groovy or other JVM-based languages when required.
• Advanced Git usage, capable of resolving complex version-control and merge conflicts in collaborative environments.
• Strong hands-on experience with AWS, designing and operating cloud-native solutions with high availability and resilience.
• Experience with event-driven architectures, using services such as:
  • Amazon SQS/SNS for asynchronous messaging and decoupled communication
  • Amazon EventBridge for event routing, orchestration, and service integration
• Experience with Amazon DynamoDB for high-throughput, low-latency workloads, including data modeling and performance tuning.
• Familiarity with Amazon S3 for object storage use cases (e.g., evidence handling and persistence patterns).
• Understanding of scalability, fault tolerance, and cost optimization techniques in AWS environments.
• Experience designing and operating microservices architectures on AWS.
• Ability to identify, troubleshoot, and resolve distributed systems issues, improving reliability and operational resilience.
• Strong testing mindset, including unit, integration, performance, and end-to-end test strategies.
• Experience with Swagger/OpenAPI, flow diagrams, and API documentation supporting internal DEVEX and external consumers.
• Proficiency with Terraform and CI/CD pipelines/tools such as Argo, Jenkins, Codefresh, including integration with cloud/security tooling.
• Experience working with critical / high-availability systems.
• Background in Financial Services / Payments / Authorization Systems.
• Solid understanding of observability practices (monitoring/metrics, distributed tracing, logging, alerting).

Additional Information

Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.