Staff Software Engineer - Payments Gateway

h2 strong Staff Software Engineer – Payments Gateway /strong /h2 h3 strong About Us /strong /h3 p Nu is one of the largest digital financial platforms in the world, with more than 127 million customers across Brazil, Mexico, and Colombia. /p p Guided by our mission to fight complexity and empower people, we are redefining financial services in Latin America and beyond — and this is still just the beginning of the purple future we’re building. /p p 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. /p p Learn more at: a href= https://international.nubank.com.br/careers/ nbsp;https://international.nubank.com.br/careers/ /a /p h3 strong About the role /strong /h3 p You will join the engineering group behind strong Nubank's Acquiring solutions, as /strong strong Tap to Pay (TAP) /strong experiences — turning phones and dedicated terminals into secure, reliable payment devices for our merchants. /p p As a strong Staff Software Engineer – /strong Payments Platform, you will lead the design and implementation of our systems for authorization, clearing and settlement /p p Today we rely heavily on partners (e.g., Zoop); our strategic direction is to strong verticalize /strong : building our own Payments SDKs and gateway to reduce dependency, gain end-to-end observability, and control core parts of the merchant experience. /p p This is a strong high-impact role /strong : you will both build critical gateway components and act as a key knowledge source on payments protocols and acquiring, seeding expertise across multiple squads (TAP, Acquiring platforms) over a 3–5 year roadmap. /p h3 strong You’ll be responsible for /strong /h3 ul li strong Designing and building Nubank’s payments gateway backend /strong that processes POS and Tap to Pay transactions after they leave the terminal, acting as the core authorization and routing layer between our devices and external acquirers/partners. /li li strong Verticalizing partner-provided capabilities /strong by developing our own strong Payment SDK /strong /li li strong nbsp;and gateway /strong , reducing reliance on third parties for transaction processing and improving observability, stability and control over the end-to-end flow. /li li strong Designing architecture for constrained Payment environments /strong , collaborating with embedded/mobile teams to account for hardware peripherals (NFC, EMV readers, printers), offline/latency-sensitive flows, and tight data-plan limits on terminals. /li li Acting as a strong technical bridge between our acquiring solutions /strong , ensuring both surfaces share a robust, scalable core transaction processing flow while serving different form factors and partners. /li li strong Integrating with acquirers and networks /strong , designing robust flows for authorizations, settlements and error handling, and progressively increasing our ownership of these interactions. /li li strong Leading long-term platform design (3–5 years) /strong for acquiring and gateway, ensuring we build scalable, reusable components instead of point solutions, and that we can support new products and geographies over time. /li li strong Seeding and multiplying domain knowledge /strong : running whiteboard sessions, design reviews and knowledge-sharing routines so that other backend engineers can learn POS/acquiring patterns and contribute effectively. /li li strong Collaborating with external experts and partners /strong , representing Nubank in technical discussions with vendor and acquirer engineering teams, and shaping agreements and interfaces that allow our platform to scale cleanly. /li /ul h3 strong We are looking for a person who has /strong /h3 p strong Required /strong /p ul li strong Staff-level backend engineering e