Senior Back-End Security Developer

Sigma Software

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profile Job Location:

São Paulo - Brazil

profile Monthly Salary: Not Disclosed
Posted on: 7 hours ago
Vacancies: 1 Vacancy

Job Summary

  • Design and build high-performance secure Back-end services for our vault and key management infrastructure 
  • Develop cryptographic workflows including key generation rotation and secure storage mechanisms
  • Build robust APIs with comprehensive authentication authorization and rate limiting
  • Write clean maintainable and well-tested code with security as a primary consideration
  • Implement comprehensive audit logging and monitoring for security-critical operations
  • Collaborate with the security team on threat modeling and security reviews
  • Participate in code reviews with a focus on security best practices
  • Create technical documentation for internal systems and API endpoints
  • Integrate with Hardware Security Modules (HSMs) and cloud KMS services
  • Implement secure secret management and rotation mechanisms
  • Build defense-in-depth security controls across all services
  • Conduct security analyses of third-party dependencies
  • Participate in security audits and penetration testing remediation

Qualifications :

  • 5 years of Back-end development experience building production systems
  • Strong proficiency in Python (FastAPI Django or Flask) and/or Go Rust C
  • Solid understanding of cryptographic principles including symmetric and asymmetric encryption hashing key derivation and digital signatures
  • Experience with RESTful API design and development
  • Understanding of authentication and authorization patterns (OAuth 2.0 JWT and mTLS)
  • Upper-Intermediate level of English

WILL BE A PLUS

  • Experience with Trusted Execution Environments such as Intel TDX NVIDIA Confidential Computing or Secure VMs
  • Experience with Git CI/CD pipelines and modern development workflows

Additional Information :

PERSONAL PROFILE

  • Ability to adapt and thrive in ambiguous and fast-moving startup environments
  • Strong problem-solving skills and the ability to diagnose complex security workflows
  • Excellent communication skills and the ability to collaborate with DevOps AI and cloudengineering teams
  • Detail-oriented mindset to ensure high availability and reliable services

Remote Work :

No


Employment Type :

Full-time

Design and build high-performance secure Back-end services for our vault and key management infrastructure Develop cryptographic workflows including key generation rotation and secure storage mechanismsBuild robust APIs with comprehensive authentication authorization and rate limitingWrite clean mai...
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Key Skills

  • Bootstrap
  • CSS
  • Front-End Development
  • HTML5
  • React
  • Redux
  • Node.js
  • Angular
  • Less
  • JavaScript
  • backbone.js
  • Sass

About Company

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At Sigma Software, we are involved with the client’s team to contribute to the design and development of a technical solution for their tokenized domain reservation platform. We started by assigning a software architect to design the smart contracts and integrate blockchain into the s ... View more

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