Staff Software Engineer | Loyalty

About Us Keystone AI was founded in 2013 to free people from a bureaucratic, slow and inefficient financial system. Since then, through innovative technology and outstanding customer service, the company has been redefining people's relationships with money across Latin America. With operations in Brazil, Mexico, and Colombia, Keystone AI is today one of the largest digital banking platforms and technology-leading companies in the world. Keystone AI was listed on the NYSE in 2021 and was recently named one of Time Magazine's 100 Most Influential Companies. For more information, visit www.nu.com .br. About the Role As a Staff Software Engineer (IC7), you will join the Loyalty team to architect and evolve a high-throughput platform that ensures our customers receive the same value they bring to our ecosystem. You will operate within a highly collaborative environment, partnering with product, design, and business analysts to navigate complex technical trade-offs. This role is designed for an engineer who thrives on "hands-on" technical execution while maintaining a strategic view of how features impact our long-term objectives and massive customer base. Responsibilities Design and implement high-scale distributed systems capable of handling massive throughput for our loyalty program. Drive technical excellence by writing clean, performant code and participating in daily development activities ("hands-on"). Lead cross-functional alignment with Product, Design, and Business leads to ensure technical solutions meet multi-pillar OKRs. Architect resilient services that can scale seamlessly to support millions of active customers in the Brazilian market. Mentor and grow the engineering team by establishing best practices for lateral development across different product features. Required Qualifications Experience building and maintaining high-scale, high-throughput backend services in a production environment. Proven track record of technical ownership over complex features, from initial architecture to long-term maintenance. Demonstrated ability to manage stakeholders and communicate technical trade-offs to both technical and non-technical partners. Background in developing robust systems within large engineering organizations. Nice to Have Prior experience developing loyalty or rewards-based products. Experience with financial technology or distributed ledger concepts. Background in managing features that span multiple business domains simultaneously. Location & Work Model div]:bg-bg-000/50 [&_pre>div]:border-0.5 [&_pre>div]:border-border-400 [&_.ignore-pre-bg>div]:bg-transparent [&_.standard-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&_.standard-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8 [&_.progressive-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&_.progressive-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8"> _*]:min-w-0 gap-3 standard-markdown"> This role is based in Brazil on a hybrid model . Our Brazilian offices are located in São Paulo, Campinas, Belo Horizonte, or Rio de Janeiro. Diversity & Inclusion / Equal Opportunity At Keystone AI, we believe that diversity is essential to building the best products and services. We are committed to creating a welcoming work environment that respects and values diversity in all its forms, and we encourage people from all backgrounds to apply. We are proud to be an equal opportunity employer and do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.