Lead Software Engineer – Buenos Aires, Argentina (Hybrid) at Nubank

<h1 class="_9k2iva0 p8i6j0c _1ibi0s314 heading1 _9k2iva1">Lead Software Engineer – Buenos Aires, Argentina (Hybrid)</h1> <h2 class="_9k2iva0 p8i6j0c _1ibi0s314 heading2 _9k2iva1">About Us</h2> <p class="p8i6j01 paragraph">Nu is one of the largest digital financial platforms in the world, with more than 127 million customers across Brazil, Mexico, and Colombia. Guided by our mission to fight complexity and empower people, we are redefining financial services in Latin America and this is still just the beginning of the purple future we're building.</p> <p class="p8i6j01 paragraph">Listed on the New York Stock Exchange (NYSE: NU), we combine proprietary technology, data intelligence, and an efficient operating model to deliver financial products that are simple, accessible, and human. Our impact has been recognized by global rankings such as Time 100 Companies, Fast Company’s Most Innovative Companies, and Forbes World’s Best Bank. Visit our institutional page <a class="ln4xub1 _1ibi0s36w _1ibi0s3e5 _1ibi0s3cg markdown-link _1ibi0s376" href="https://international.nubank.com.br/careers/" target="_blank">&nbsp;<span class="f8uo5q0">https://international.nubank.com.br/careers/</span></a>.</p> <h2 class="_9k2iva0 p8i6j0c _1ibi0s314 heading2 _9k2iva1">About the role</h2> <p class="p8i6j01 paragraph">Our Engineering team helps Nu create and scale the technology that powers the best financial products in Latin America. We strive for state-of-the-art software development practices, using a variety of technologies and architectures to build resilient, secure, and highly scalable systems.</p> <p class="p8i6j01 paragraph">As a <strong>Lead Software Engineer</strong>, you will play a key role in shaping the technical direction of multiple teams, driving the design and evolution of large-scale distributed systems that serve millions of customers. While we value experience with our tech stack, we are confident that engineers who are eager to learn will be successful here — and we will teach you <strong>Clojure</strong> as our main backend language.</p> <p class="p8i6j01 paragraph">You will build and evolve:</p> <ul class="p8i6j07 p8i6j02"> <li class="p8i6j0a">Horizontally scalable microservices written mostly in <strong>Clojure</strong>, using <strong>Finagle</strong> and leveraging functional programming techniques and hexagonal architecture</li> <li class="p8i6j0a">High-throughput jobs and inter-service communication using <strong>Kafka</strong></li> <li class="p8i6j0a">Continuous Integration and Deployment pipelines on <strong>AWS</strong></li> <li class="p8i6j0a">Data storage solutions using <strong>Datomic</strong> and <strong>DynamoDB</strong></li> <li class="p8i6j0a">Monitoring and observability with <strong>Prometheus</strong></li> <li class="p8i6j0a">Services running as much as possible in <strong>Kubernetes</strong></li> </ul> <p class="p8i6j01 paragraph">We are a process-light organization that values human interactions. We work in small, independent teams that feel like startups within the company and avoid unnecessary coupling and centralization whenever realistic. We understand that execution is key to success and continuously optimize our processes to remove bottlenecks.</p> <h2 class="_9k2iva0 p8i6j0c _1ibi0s314 heading2 _9k2iva1">You'll be responsible for</h2> <ul class="p8i6j07 p8i6j02"> <li class="p8i6j0a">Working with large-scale distributed systems and understanding their broad architecture and trade-offs</li> <li class="p8i6j0a">Setting technical direction for multiple teams, ensuring alignment with Business Areas and architecture strategies</li> <li class="p8i6j0a">Driving pragmatic innovation while ensuring resilient, secure, and flexible solutions that scale across products and geographies</li> <li class="p8i6j0a">Mentoring engineers across teams and helping maintain a high technical bar organization-wide</li> <li class="p8i6j0a">Writing, testing, instrumenting, documenting, and maintaining high-quality code</li> <li class="p8i6j0a">Pairing and participating in code reviews to support the growth of others in and around your teams</li> <li class="p8i6j0a">Collaborating closely with Product, Design, and Engineering leaders to build new end-to-end experiences</li> <li class="p8i6j0a">Ensuring comprehensive observability, performance monitoring, and robust error handling across team services</li> <li class="p8i6j0a">Participating in on-call rotations for your team and responding to incidents as necessary</li> <li class="p8i6j0a">Focusing primarily on backend applications, while being open to contributing to mobile and frontend development according to business needs</li> </ul> <h2 class="_9k2iva0 p8i6j0c _1ibi0s314 heading2 _9k2iva1">We are looking for a person who has</h2> <ul class="p8i6j07 p8i6j02"> <li class="p8i6j0a">At least <strong>8 years of experience</strong> developing digital products in complex environments</li> <li class="p8i6j0a">Deep expertise in <strong>distributed systems</strong>, <strong>microservices architecture</strong>, and <strong>cloud technologies</strong></li> <li class="p8i6j0a">A proven track record of designing and delivering <strong>large-scale systems</strong> that serve thousands or millions of users</li> <li class="p8i6j0a">A strong background in <strong>object-oriented or functional programming languages</strong>, with the ability to work across multiple languages</li> <li class="p8i6j0a">Demonstrated ability to <strong>lead technical initiatives across multiple teams</strong>, even without direct authority</li> <li class="p8i6j0a">Experience mentoring senior engineers and raising the technical bar across organizations</li> <li class="p8i6j0a">Practical knowledge of <strong>agile software development methodologies</strong> and prior experience with <strong>CI/CD</strong></li> <li class="p8i6j0a">Strong communication skills to identify and prevent risks, and explain trade-offs clearly to both technical and non-technical stakeholders</li> <li class="p8i6j0a"><strong>Advanced English</strong> skills</li> </ul> <h2 class="_9k2iva0 p8i6j0c _1ibi0s314 heading2 _9k2iva1">Location</h2> <p class="p8i6j01 paragraph">Buenos Aires, Argentina.</p> <h2 class="_9k2iva0 p8i6j0c _1ibi0s314 heading2 _9k2iva1">Our Benefits</h2> <p class="p8i6j01 paragraph">Our benefits are designed to support your wellbeing, development, and life outside of work. They include:</p> <ul class="p8i6j07 p8i6j02"> <li class="p8i6j0a">Chance of earning equity</li> <li class="p8i6j0a">Health Insurance</li> <li class="p8i6j0a">Life Insurance</li> <li class="p8i6j0a">NuCare</li> <li class="p8i6j0a">International business travel insurance</li> <li class="p8i6j0a">NuLanguage</li> <li class="p8i6j0a">Vacations</li> <li class="p8i6j0a">Parental leaves</li> <li class="p8i6j0a">Work from home allowance</li> </ul> <p class="p8i6j01 paragraph">Even if you feel you don't meet every qualification, we encourage you to apply — your unique skills and experiences may be just what we're looking for, and we're excited to learn more about what you can bring to our team.</p> <h2 class="_9k2iva0 p8i6j0c _1ibi0s314 heading2 _9k2iva1">Work Model for this Role</h2> <p class="p8i6j01 paragraph"><strong>Hybrid 2–3 times/week:</strong> Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. For more details, visit <a class="ln4xub1 _1ibi0s36w _1ibi0s3e5 _1ibi0s3cg markdown-link _1ibi0s376" href="https://building.nubank.com/nu-hybrid-work-model/" target="_blank">&nbsp;<span class="f8uo5q0">https://building.nubank.com/nu-hybrid-work-model/</span></a>.</p>