About Nu Nu serves more than 140 million customers, guided by a mission to fight complexity and empower people. The company has been leading an industry transformation through innovative products and human-centered services. Proprietary technology and data at scale power Nu’s digital platform, built to promote financial access, advancement, and transparency.

Its business model thrives on customer love and lower costs, feeding a flywheel of growth and profitability. 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 setting, with hundreds of clusters, thousands of brokers, hundreds of thousands of topics, and very large daily data volumes across multiple AWS accounts.

At the Senior level, we are looking for someone who can independently own important 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. CAD 156,000 - 184,000 Health Insurance Life Insurance Pension Plan Extended parental leave Nucleo - Our learning platform of courses NuLanguage - Our language learning program Vacations Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. 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; To maintain a consistent and fair process for every candidate, Nu does not provide individualized technical feedback. See how our policy works here #

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