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Backblaze

Senior Software Engineer – Application Security

Backblaze

Application Security Engineer improving application security for Backblaze B2 Cloud Storage. Involves building security into products and leveraging AI tools.

Posted 4/30/2026full-timeRemote • 🇦🇷 ArgentinaSeniorWebsite

Tech Stack

Tools & technologies
CloudGoJavaJavaScriptLinuxPythonTypeScript

About the role

Key responsibilities & impact
  • Improve application security across software used to enable Backblaze B2 Cloud Storage and Computer Backup
  • Build security into how the product is used, how data is stored and how customers can use it
  • Leverage AI tools and software for building new and maintaining existing software security features
  • Perform security assessments and code reviews on internal and external customer-facing applications
  • Work closely with engineers to remediate security vulnerabilities using AI tools
  • Develop security automation and tooling to improve security
  • Support bug bounty program and vulnerability handling

Requirements

What you’ll need
  • Application Development and Security knowledge
  • AI knowledge and experience using it for development & security
  • Understanding of: AI Frameworks and tooling, core web security, common web security flaws, coding agents
  • Strong understanding of OWASP Top 10 vulnerabilities
  • Experience with security testing tools such as:
  • SAST / DAST scanners
  • Fuzzing tools
  • Vulnerability scanners
  • Familiar with web technologies: HTTP, REST APIs, etc.
  • Experience with Web Applications, Cloud Systems and Linux Environments
  • Determining how new and old security needs can leverage AI workflows and integrations to improve them
  • AI Coding tools such as Gemini, Claude Code, ChatGPT, Cursor or others
  • Experience with programming languages such as: Java, JSP, JavaScript, TypeScript, Go, Python and C/C++

Benefits

Comp & perks
  • Competitive compensation and benefits
  • Remote-first culture supporting work-life balance

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Hard Skills & Tools
application developmentapplication securityAI knowledgesecurity assessmentscode reviewssecurity automationSAST scannersDAST scannersvulnerability scannersprogramming languages