About Nu Nu is the leading digital bank in Latin America, serving 135 million customers across Brazil, Mexico, and Colombia. The company has been leading an industry transformation by leveraging data and proprietary technology to develop innovative products and services.About Nu Nu is the leading digital bank in Latin America, serving 135 million customers across Brazil, Mexico, and Colombia. The company has been leading an industry transformation by leveraging data and proprietary technology to develop innovative products and services.

Guided by its mission to fight complexity and empower people, Nu caters to customers’ complete financial journey, promoting financial access and advancement with responsible lending and transparency. Nu’s impact has been recognized in multiple awards, including Time 100 Most Influential Companies, Fast Company’s Most Innovative Companies, and Forbes World’s Best Banks.

About The Role We are looking for an experienced software engineer to help evolve and operate Nubank’s messaging platform and the infrastructure that supports asynchronous communication at scale. The platform operates in a large and complex environment, with hundreds of clusters, thousands of brokers, hundreds of thousands of topics, and very large daily data volumes across multiple AWS accounts. At the Lead level, we are looking for someone who can independently own key technical problems, improve reliability and operability, and drive engineering decisions in partnership with the team.

Strong knowledge of distributed systems infrastructure, especially Kubernetes, networking, and AWS, is essential. 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 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 Contribute to architectural discussions involving messaging, traffic patterns, service communication, and platform reliability 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.

Ability to troubleshoot complex production issues across application, infrastructure, and network layers. Good understanding of scalability, resilience, performance, and failure isolation patterns. Ability to work autonomously on ambiguous technical problems and drive them to execution.

Experience with platform engineering, SRE, or infrastructure-focused backend engineering. Familiarity with multi-account AWS environments and large-scale cloud operations.

Experience balancing reliability, performance, and cost in production systems.

Health Insurance Life Insurance Pension Plan

Nucleo - Our learning platform of courses NuLanguage - Our language learning program Vacations Our recruitment process may involve the use of artificial intelligence-enabled tools, such as automated interview transcription and analysis, to support the evaluation process. Artificial intelligence is not used to make final hiring decisions;

📌 Lead Systems Engineer (Kafka) (Toronto)
🏢 Nubank
📍 Toronto