The Application Security Engineer job description template can be posted to online job forums and career pages to recruit qualified candidates. You can modify the job description, requirements, and responsibilities for the AppSec Engineer role based on your company’s specific hiring needs.

This template contains the Application Security Engineer job description, key responsibilities, requirements, and skills employers should consider when hiring for this role. It can be adapted to match your organization’s technology stack, security program, and application environment.

Application Security Engineer Job Brief

We are hiring an Application Security Engineer who works with developers to implement security controls throughout every phase of the software development lifecycle (SDLC) and reduce application security risks.

The Application Security Engineer’s job revolves around application security, data protection, secure software development, vulnerability management, and encryption. Familiarity with application architecture, APIs, cloud environments, technical documentation, and modern security testing practices is important for this role.

The ideal candidate should be able to work closely with development, DevOps, product, and security teams to identify security weaknesses early, recommend practical remediation steps, and help integrate security into development workflows.

Application Security Engineer Responsibilities

• Set and maintain application security requirements and development parameters throughout the SDLC.
• Monitor, identify, prioritize, and track vulnerabilities, and work with technical teams to remediate them.
• Review and test source code, running applications, APIs, and relevant application components for security weaknesses.
• Implement advanced security controls and review application design and architecture to ensure secure development best practices are followed.
• Conduct threat modeling exercises to identify vulnerabilities and attack paths across applications, and recommend appropriate countermeasures.
• Perform or support penetration testing, secure code reviews, cryptographic reviews, and user authorization and access-control assessments.
• Collaborate with development and DevOps teams to integrate security checks into development and CI/CD processes.
• Assess application dependencies and software supply-chain risks and help teams address vulnerable or outdated components.
• Support API security, Identity and Access Management (IAM), authentication, authorization, and data protection requirements.
• Document identified risks, remediation recommendations, security standards, and testing results.
• Stay current with application security threats, secure development practices, and standards such as the OWASP Top 10:2025.

Application Security Engineer Requirements

• Bachelor’s degree in Computer Science, Cybersecurity, Information Technology, Software Engineering, Systems Engineering, or a related field; equivalent practical experience may also be considered.
• Relevant industry certifications such as ISC2 CSSLP, CISSP, or GIAC security certifications are a plus.
• Strong hands-on experience in application security, data encryption, secure coding, and vulnerability management.
• Familiarity with application and API security standards, including the OWASP Top 10 and secure SDLC practices.
• Proficiency in Identity and Access Management (IAM), authentication, authorization, and access-control principles.
• Strong understanding of software architecture, design, deployment, maintenance, and common application security risks.
• Experience with penetration testing tools, security code reviews, threat modeling, and application security testing methods such as SAST, DAST, and software composition analysis.
• Familiarity with cloud security, CI/CD pipelines, dependency management, and software supply-chain security is preferred.
• Ability to communicate security risks and remediation guidance clearly to developers, engineering leaders, and other stakeholders.
• Excellent analytical, problem-solving, communication, and collaboration skills.

Key Application Security Engineer Skills

A strong Application Security Engineer combines software-development knowledge with practical security expertise. When reviewing candidates, employers should look for a balanced mix of technical skills, security judgment, and the ability to collaborate with engineering teams.

• Secure software development lifecycle (SDLC) practices
• Threat modeling and application risk assessment
• Secure code review and vulnerability remediation
• Web application and API security
• Authentication, authorization, IAM, and access control
• Encryption and cryptographic security principles
• SAST, DAST, software composition analysis, and penetration testing
• Cloud, CI/CD, and software supply-chain security awareness
• Technical documentation and cross-functional communication

Frequently Asked Questions About Application Security Engineer Job Description

What does an Application Security Engineer do?

An Application Security Engineer helps protect software applications by identifying vulnerabilities, reviewing code and architecture, supporting security testing, and integrating security controls throughout the SDLC. The role commonly works with developers, DevOps teams, product teams, and security teams.

What are the main responsibilities of an Application Security Engineer?

Typical responsibilities include threat modeling, secure code review, vulnerability management, application and API security testing, security architecture reviews, access-control assessments, remediation guidance, and maintaining application security documentation.

What skills should an Application Security Engineer have?

Important Application Security Engineer skills include secure coding, threat modeling, penetration testing, vulnerability analysis, API security, IAM, encryption, security testing tools, secure SDLC practices, and clear communication with technical teams.

Which security standards should an Application Security Engineer know?

Candidates should understand widely used application security guidance such as the OWASP Top 10 and secure software development practices. Knowledge of security verification, threat modeling, and organization-specific compliance requirements may also be important depending on the role.

What qualifications are useful for an Application Security Engineer?

Employers commonly look for a background in computer science, cybersecurity, software engineering, or a related field, along with hands-on application security experience. Certifications such as CSSLP, CISSP, or relevant GIAC certifications can be useful depending on the position.

Conclusion

A clear Application Security Engineer job description helps employers define the security, development, and collaboration skills required for the role. Use this template as a starting point and tailor the responsibilities and requirements to your applications, technology stack, security maturity, and hiring needs.