Rust Backend Engineer - Authentication & Security Systems

CloudWalk, Inc.; United States; On-site; USD 140,000 - 210,000; Full time

Job summary

CloudWalk, Inc. is seeking a security-focused engineer to design and maintain authentication systems for customers and internal services. You will build token issuance, validation, and rotation, and manage HSM-backed signing infrastructure while improving the security of auth flows in a regulated payments environment.

You will work with cloud platforms (AWS/GCP) and Terraform, and leverage Rust for core components. Strong English communication and cross-team collaboration are essential.

Qualifications

• Experience operating critical infrastructure on cloud platforms (AWS/GCP) with Terraform.
• Experience with cryptographic authentication systems.
• Experience with OAuth/OIDC, JWT and SAML authentication flows.
• Experience with PCI compliant systems.
• Proficiency in Rust programming language.
• Knowledge of HSMs is a plus.
• Strong written and verbal English communication.

Responsibilities

• 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 security of auth flows in regulated payments environments.
• Build SDKs and tooling for other teams to integrate with auth.
• Communicate clearly with technical and non-technical stakeholders.

Skills

Rust

Terraform

OAuth/OIDC

JWT

SAML

PCI compliance

English communication

Clear communicator

Job description

CloudWalk, Inc. is seeking a security-focused engineer to design and maintain authentication systems for customers and internal services. You will build token issuance, validation, and rotation, and manage HSM-backed signing infrastructure while improving the security of auth flows in a regulated payments environment.

You will work with cloud platforms (AWS/GCP) and Terraform, and leverage Rust for core components. Strong English communication and cross-team collaboration are essential.