Senior Systems Engineer (Kafka)

The role

This person will evolve and operate Nubank's messaging platform and asynchronous communication infrastructure. They will work on large-scale systems involving hundreds of clusters and thousands of brokers.

What you will do

• Operate and improve large-scale messaging and platform infrastructure based on Kafka
• Contribute to the reliability, scalability, and performance of asynchronous communication platforms
• Help design and implement solutions for high-throughput, low-latency, and fault-tolerant systems
• Improve observability, automation, and operational excellence across the platform
• Support incident analysis, troubleshooting, and root cause remediation in production environments
• Optimize infrastructure usage and help drive efficiency and cost awareness across AWS-based environments
• Work on platform capabilities that enable safe growth in message volume, topic count, and cluster footprint
• Partner with other engineers and teams to evolve platform standards, tooling, and best practices
• Contribute to architectural discussions involving messaging, traffic patterns, service communication, and platform reliability

Required qualifications

• Strong software engineering fundamentals and experience working with distributed systems in production
• Solid experience with Kubernetes, networking, and AWS in large-scale or business-critical environments
• Experience operating infrastructure-heavy platforms with high reliability and availability requirements
• Ability to troubleshoot complex production issues across application, infrastructure, and network layers
• Experience improving observability, automation, and operational tooling
• Good understanding of scalability, resilience, performance, and failure isolation patterns
• Ability to work autonomously on ambiguous technical problems and drive them to execution
• Strong collaboration skills and ability to work across team boundaries

Nice to have

• Experience with Apache Kafka or other messaging and streaming technologies
• Experience with platform engineering, SRE, or infrastructure-focused backend engineering
• Familiarity with multi-account AWS environments and large-scale cloud operations
• Experience with high-throughput event-driven architectures
• Experience balancing reliability, performance, and cost in production systems

Benefits

• Health Insurance
• Life Insurance
• Pension Plan
• Extended parental leave
• Nucleo - Our learning platform of courses
• NuLanguage - Our language learning program
• NuCare - Our mental health and wellness assistance program
• Vacations

Before you apply

• Recruitment process may involve the use of artificial intelligence–enabled tools
• Nu does not provide individualized technical feedback

About the company

Nu serves more than 140 million customers with a mission to fight complexity and empower people. The company uses proprietary technology and data at scale to power its digital platform.