What You'll Do:
- This role sits on a team that owns both auth and ledger, so you'll occasionally pick up work across both areas.
- Build and operate token issuance, validation, and rotation
- Maintain HSM-backed key management and signing infrastructure
- Improve the security of auth flows in a regulated financial environment
- Build SDKs and tooling that other engineering teams use to integrate with auth
- Communicate clearly with both technical and non-technical stakeholders
Who You Are:
- Has experience with cryptographic authentication systems
- Has experience with authentication and authorization protocols (OAuth/OIDC, JWT, SAML)
- Has experience with PCI compliant systems
- Is proficient in Rust
- Some knowledge of the Brazilian payments ecosystem is a plus
- Experience with HSMs is a plus
- Communicates clearly and effectively
- Advanced English communication skills, primarily for internal communication with our diverse, multinational team
Work at one of the world's most innovative and fastest-growing fintechs;
Collaborate with a diverse team of hackers, artists, and visionaries;
Explore the power of AI to amplify your impact as an engineer;
Build solutions that touch millions of lives every day.
The Future We See:
At CloudWalk, we envision a future where AI empowers every field to reach new heights:
• People teams leveraging AI to transform talent acquisition and employee development.
• Marketing professionals creating data-driven, AI-powered campaign strategies.
• Customer Success teams enhancing client experiences with intelligent solutions.
• Risk analysts combining human expertise with AI to navigate complexities.
• Designers collaborating with AI to push creative boundaries.
Join us at CloudWalk, where we're not just engineering solutions; we're building a smarter, AI-driven future for payments—together.
Skills Required
- Experience with cryptographic authentication systems
- Experience with PCI compliant systems
- Experience operating critical infrastructure with cloud providers
- Proficient in developing software using Rust
- Advanced English communication skills
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".









