Staff Software Engineer (+5 years, Golang or Python)

We're looking for a Staff Software Engineer to be a core technical contributor on our real-time event processing platform. You'll design and build event-driven services, drive engineering quality, and mentor junior engineers — all while working with limited supervision on complex problems. This is the first truly senior individual contributor level, and we expect you to bring strong technical judgment, ownership, and a bias for quality.  What you will do: Design and build event processing services and pipelines on AWS serverless (Lambda, Kinesis, EventBridge, Step Functions).  Write production-quality Golang and/or Python code with comprehensive testing and observability.  Own services end-to-end: development, deployment, monitoring, incident response, and SLA adherence.  Make sound architectural decisions for somewhat complex problems, exercising discretion and judgment.  Drive code quality through thorough code reviews, testing standards, and documentation.  Investigate and resolve production incidents independently; contribute to postmortem analysis.  Design and implement CI/CD improvements for better developer experience and deployment safety.  Mentor Analyst-level engineers through pairing, design guidance, and constructive review feedback.  Propose and implement improvements to platform resilience, performance, or cost.  Participate in on-call rotations independently with full accountability.  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. #LI-Remote Basic Qualifications: 5+ years of relevant work experience with a Bachelor’s Degree or at least 2 years of work experience with an Advanced degree (e.g. Masters, MBA, JD, MD) or 0 years of work experience with a PhD, OR 8+ years of relevant work experience. Be based in Brazil. Preferred Qualifications: Strong software engineering background building distributed systems at scale  Proficiency in Golang and/or Python Experience with modern streaming processing (Kinesis, Flink, Spark) Cloud computing skills (preferably AWS) and hybrid designs Data platform tooling: Terraform (IaC), Docker and Kubernetes (production) and Airflow (or similar orchestration) Observability and reliability mindset: Grafana, CloudWatch (logs, metrics, traces), on-call participation, SLA awareness Strong SQL skills Version control and CI/CD: Git/GitHub, pipelines (e.g. Codefresh) or similar Soft skills: clear communication, adaptability, self-management, critical thinking, collaboration English: B2 or above 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.