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Ualá

Fintech with free prepaid Mastercard payments

Staff Software Engineer

Backend EngineeringConfirmed live in the last 24 hours
Full-timeArgentinaNo salary listedHybrid

About the Job

Requirements

  • A strong track record designing microservices architectures for large-scale distributed systems.
  • Experience developing scalable backend software in Golang and/or Java.
  • End-to-end experience on products that include mobile applications; native Android (Kotlin) and iOS (Swift) development experience is valued.
  • Demonstrated experience influencing and leading cross-organizational technology initiatives, with concrete examples of initiatives driven end-to-end and their impact.
  • Experience developing asynchronous systems using patterns such as event sourcing, CQRS, and hexagonal architectures.
  • Ability to guide other technical teams in developing efficient solutions and adopting new standards.
  • Experience with infrastructure as code and advanced CI/CD processes.
  • Experience in agile environments focused on stability, scalability, and customer experience.
  • Strong knowledge of relational and non-relational databases in highly available environments.
  • Knowledge of cloud-native and event-driven architectures and advanced design patterns.
  • Knowledge of infrastructure as code and CI/CD.

Responsibilities

  • Define and lead the long-term technical vision for credit products, ensuring scalable, resilient, and efficient architecture to support regional business growth.
  • Design and implement complex end-to-end solutions, from backend microservices and event-driven architectures through integration with native Android and iOS apps.
  • Proactively drive cross-functional technical initiatives by identifying problems and opportunities, proposing solutions, and delivering them to production across multiple teams.
  • Establish engineering standards and promote best practices to improve technical quality across the organization.
  • Mentor other engineers and guide technical decision-making across multiple teams.
  • Collaborate with product, risk, and business leaders to turn business challenges into robust, scalable technical solutions, communicating complex ideas to technical and non-technical audiences.
  • Lead mitigation of critical incidents and root-cause analyses in high-concurrency environments, ensuring continuous system improvement.
  • Drive technical innovation, including strategic use of artificial intelligence to optimize development processes and user experience.

Desired Qualifications

  • Experience in fintech or financial products such as credit, payments, or risk.
  • Native mobile development for Android (Kotlin) and iOS (Swift).

About the Company

Ualá

Fintech with free prepaid Mastercard payments

Ualá provides a free prepaid Mastercard and a mobile app in Argentina to help people manage their money. The app lets users spend anywhere Mastercard is accepted, send and receive money instantly at no cost, pay bills, recharge prepaid services, and load their SUBE card. It uses a freemium model with no fees to open, maintain, or close an account, and it earns mainly from Mastercard interchange fees and potential partnerships; all services run in-app with online support. The goal is to simplify everyday money tasks for Argentinians by offering a digital platform that combines payments, transfers, bill payments, and card access in one mobile app.

Company size
1,001-5,000
Company stage
Late Stage VC
Total funding
$1.2B
Headquarters
Buenos Aires, Argentina
Founded
2017

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