Backend Security Engineer

About the role

Looking for a backend security engineer with strong experience in Java, Node.js, Go, Rust, TypeScript, Python, C++ or similar languages, building scalable services and APIs, comfortable with debugging, performance work, automated testing, and code review. A cybersecurity or SecOps background is a plus, with expertise in secure coding, appsec, pentesting, vulnerability assessment, OWASP/CWE, or security-focused reviews.

Responsibilities

• Design and implement scalable backend services and APIs.
• Debug, profile, and optimize performance of services.
• Write and maintain automated tests.
• Conduct code reviews with focus on quality and security.
• Apply secure coding practices, conduct penetration testing, vulnerability assessments, and security code reviews.
• Identify and resolve software bugs and system bottlenecks.
• Refactor codebases and implement complex features in large-scale applications.

Requirements

• Proven backend development experience with high-quality, performant projects.
• Background in cybersecurity: penetration testing, vulnerability assessment, or security code reviews.
• Demonstrated success in identifying and resolving bugs and performance issues.
• Experience with codebase refactoring and implementing complex features at scale.
• Strong understanding of algorithms, data structures, and core computer science concepts.
• Excellent analytical, problem‑solving, and technical communication skills.

Skills

• Java, Node.js, Go, Rust, TypeScript, Python, C++ (or similar)
• Scalable service and API development
• Debugging, performance tuning, automated testing
• Code review and secure coding practices
• OWASP, CWE, penetration testing, vulnerability assessment

Pay

Compensation is output‑based; experts are paid per task that meets the project specifications. The time required to complete work may vary depending on the expert’s experience and workflow. Minimum submission requirements apply; experts must submit a minimum number of tasks per week.