Backend Engineer Authentication

CloudWalk, Inc.; São Paulo; Presencial; BRL 250 000 - 400 000; Tempo integral

Resumo da oferta

CloudWalk, Inc. is seeking an experienced engineer to design and maintain authentication systems that secure customer and internal services. You will implement token issuance, validation, and rotation, and operate HSM-backed key management in a regulated financial environment.

You will build SDKs and tooling to help other teams integrate with auth, while communicating effectively with a diverse, multinational workforce. Advanced English is essential for collaboration across teams.

Qualificações

• Experience operating authentication infrastructure on cloud platforms (AWS/GCP).
• Proficiency with cryptographic authentication systems.
• Experience with OAuth/OIDC, JWT, SAML.
• PCI-compliant systems experience.
• Proficient in Rust.
• Knowledge of Brazilian payments ecosystem is a plus.
• Experience with HSMs is a plus.
• Clear and effective communication.
• Advanced English for internal collaboration.

Responsabilidades

• Develop and maintain authentication systems used by customers and internal services.
• 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 for other engineering teams to integrate with auth.
• Communicate clearly with both technical and non-technical stakeholders.

Conhecimentos

Rust

Advanced English

Clear communication

Ferramentas

Terraform

HSMs

Descrição da oferta de emprego

About The Technology Team

Our Technology teams build the financial infrastructure that moves money for millions of people across the globe. We work on distributed systems at scale — from the payment kernel to AI-powered fraud detection — and we operate on the belief that great engineering is the foundation of everything CloudWalk does.

About This Role

• Develop and maintain authentication systems used by both customers and internal services- 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

What You Need To Succeed

• Has operated critical infrastructure on cloud providers like GCP or AWS, using tools such as Terraform
• 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

The Future We See

• 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.