Backend Software Engineer
CloudWalk is a financial technology company that operates AI-powered payment and financial services. Its products serve Brazilian sellers and consumers as well as U.S. small and solo entrepreneurs, offering payments, credit, storefronts, financial-management assistance, and customer support.
Projects
About CloudWalk, Inc.
CloudWalk operates AI-native financial services and payment products, including InfinitePay for Brazilian sellers, JIM for U.S. microbusinesses, and Pierre, an AI financial agent for consumers in Brazil. It applies AI to credit scoring, fraud detection, customer support, and operational workflows. The company also develops Stratus, an open-source, Ethereum-compatible permissioned blockchain for global payment networks, financial institutions, developers, and enterprises.
Skills
About the Role
You will design and implement Rust microservices that power card issuance, transaction authorization, and clearing using the blockchain as the source of truth for customer balances. You will optimize performance, speed, and scalability, develop and maintain automated test suites, create load tests and benchmarks, diagnose and fix production issues, deploy and operate critical infrastructure with cloud providers and Terraform, and mentor other engineers.
Requirements
- Experience operating critical infrastructure and working with GCP, AWS, and Terraform
- Strong knowledge of relational databases, SQL, NoSQL, and ORM technologies
- Proficiency in Rust and the Rust ecosystem
- Familiarity with the Brazilian payments ecosystem (installments, SPI, SPB, CIP)
- Advanced English communication skills
Responsibilities
- Discuss and debug architecture strategies to deliver solutions for customers
- Improve team productivity, reliability, and simplicity
- Develop and maintain automated test suites
- Debug production issues
- Design and develop load tests, benchmarks, tools, and procedures
- Mentor and guide engineers
- Evaluate and deploy software tools, processes, and metrics
- Contribute to engineering-wide initiatives
