[Remote] Backend Engineer Authentication

Note: The job is a remote job and is open to candidates in USA. CloudWalk, Inc. is a fintech company focused on innovating the future of payments. They are seeking a Backend Engineer for Authentication to develop and maintain authentication systems, improve security, and build tools for integration with other engineering teams.

Responsibilities

• 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

Skills

• 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
• Communicates clearly and effectively
• Advanced English communication skills, primarily for internal communication with our diverse, multinational team
• Some knowledge of the Brazilian payments ecosystem is a plus
• Experience with HSMs is a plus

Company Overview