Rust Engineer - Financial Infrastructure

Posted 5 Days Ago
Be an Early Applicant
Hiring Remotely in São Paulo, BRA
In-Office or Remote
Mid level
Payments • Software
The Role
Build and maintain Rust-based financial infrastructure: implement features across credit, investments, and compliance, write PostgreSQL queries, create and run unit/integration tests, participate in code reviews and architecture, and troubleshoot critical production issues.
Summary Generated by Built In

We are building Brazil’s first self-driving bank: a financial institution that operates autonomously, with decisions powered by data and systems designed to work seamlessly for the customer.

Our team is responsible for developing the financial infrastructure that makes this possible. We build and operate systems for the full lifecycle management of CDBs, integration with CETIP/B3, regulatory data systems for the Central Bank of Brazil, accounting, and blockchain integration.

This is a high-responsibility environment where precision and security are non-negotiable.

What You'll Do:

  • Develop and maintain Rust-based features across credit, investments, and regulatory compliance domains
  • Write SQL queries in PostgreSQL
  • Contribute to unit and integration tests, helping maintain code quality and coverage
  • Work closely with the team on code reviews, architecture discussions, and technical documentation
  • Investigate and fix bugs in critical production flows

What You'll Need to Succeed:

  • Experience with, or strong interest in, statically typed programming languages, especially Rust
  • Solid understanding of databases and SQL
  • Ability to read and understand other people’s code, not just write your own
  • Strong attention to detail and a careful mindset, especially in environments where mistakes have real financial impact

Nice to Have:

  • Experience with Rust
  • Background in financial systems, fintech, or regulation (BACEN, CVM, CETIP/B3)
  • Familiarity with Kafka, Redis, or messaging systems
  • Experience with observability tools such as tracing, metrics, Prometheus, or Sentry
  • Experience with Kubernetes or cloud environments, especially GCP

Skills Required

  • Experience with or strong interest in statically typed programming languages, especially Rust
  • Solid understanding of databases and ability to write SQL (PostgreSQL)
  • Ability to read and understand other people's code
  • Strong attention to detail and careful mindset for high-stakes financial systems
  • Experience with Rust
  • Background in financial systems, fintech, or regulation (BACEN, CVM, CETIP/B3)
  • Familiarity with Kafka, Redis, or messaging systems
  • Experience with observability tools such as tracing, metrics, Prometheus, or Sentry
  • Experience with Kubernetes or cloud environments, especially GCP
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The Company
HQ: São Paulo, São Paulo
501 Employees
Year Founded: 2013

What We Do

We are democratizing the payments industry in Brazil, by empowering entrepreneurs through technological, inclusive, and life-changing solutions. Based in Brazil, CloudWalk is a high-end global payment network built on modern technology and proprietary blockchain, focused in bringing a revolution to the payment ecosystem for small and medium-sized businesses. As a unicorn, the company has provided its customers with more than R$ 1 billion in savings by charging fair fees on its transactions and is now present in more than 300.000 businesses across 5.000 brazilian cities. With investors such as the Valor Capital Group, HIVE Ventures and Coatue, the company has already raised US$ 365.5 million in investments and R$3.4 billion in FDICs for anticipation of receivables in its network of financial solutions. In 2022, it was the only brazilian fintech to be featured in the "The Retail Tech 100" ranking by CB Insights, on the "Protection Solutions for Payments and Frauds".

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