Application Security Engineer

Company: MassMutual
Location: New York City
Posted on: November 27, 2025

Job Description:

Job Description Application Security Engineer, Application Security, Enterprise Cyber Security Full-Time, Hybrid (Springfield, MA, Boston, MA, New York, NY) The Opportunity We are seeking an experienced Application Security Engineer with a passion for solving problems and being innovative to join our Application Security team and take charge of ensuring the confidentiality, integrity, and availability of our applications. The ideal candidate will have advanced knowledge of secure software development, extensive experience with identifying vulnerabilities, and the ability to implement robust security solutions. This role will require technical expertise in secure software development lifecycle (SSDLC), collaboration with development teams, security architects, and other stakeholders to integrate security best practices into all stages of the software development lifecycle. The Team Our Application Security team is dedicated to ensuring the security of MassMutual applications through rigorous assessments and proactive measures. While we collaborate closely with security architects, DevOps engineers, and software developers, our core team focuses on securing applications by identifying, risk assessing, prioritizing, reporting, remediation guidance, and continuously monitoring applications for vulnerabilities, implementing security best practices, and assisting teams in remediating vulnerabilities. Our team brings various backgrounds and experiences spanning from software engineering to red teaming, valuing continuous learning, innovation, and collaboration. The Impact: Your key responsibilities will consist of the following to ensure applications are resilient against emerging threats, reducing potential financial and reputational damage from security incidents. Conduct in-depth security assessments, including vulnerability scanning, and code reviews. Leverage automated tools and manual testing techniques to identify, risk assess and prioritize and propose remediation strategies for identified threats and application-level vulnerabilities (e.g., OWASP Top 10, etc.) ensuring our applications meet security standards and reducing exposure to data breaches. Collaborate with security architects to design secure application architectures that align with industry best practices. Ensure secure coding practices are followed, and security controls are incorporated into software designs. Conduct detailed threat modeling to identify attack vectors and potential weaknesses. Collaborate with our SDLC Council to develop and maintain secure coding standards, empowering developers to integrate security into the development process. Partner with DevOps teams to implement security within CI/CD (continuous integration & delivery) pipelines for automated and seamless deployment of secure code. Actively participate in incident response activities related to application security breaches, providing rapid identification and mitigation guidance. Ensure compliance with security regulations, frameworks, and industry standards such as OWASP. Leverage reporting tools to demonstrate the overall risk through metrics (KPIs, KRIs, OKRs) of vulnerabilities and code defects to MassMutual’s cyber assets for various team leaders and executive leadership for risk prioritization and enablement of risk-based decision-making. Stay up to date with the latest security threats, vulnerabilities, and industry trends to inform and improve security strategies. Strong problem-solving abilities and analytical thinking. Excellent communication skills to explain security issues to both technical and non-technical stakeholders. A team player with the ability to work in a collaborative, fast-paced environment. Respond to cybersecurity incidents related to software and application vulnerabilities The Minimum Qualifications Bachelor’s or master's degree in computer science, Information Security, or a related field. Minimum of 5 years of experience in application security, penetration testing, or secure software development. The Ideal Qualifications Relevant security certifications such as CEH, OSCP, or GWAPT from an industry recognized certifier (e.g., SANS/GIAC, CompTIA, ISACA, ISC2, etc.) Strong knowledge of secure software development methodologies, including threat modeling, code reviews, and static/dynamic analysis. Experience in integrating security into DevOps (DevSecOps) and CI/CD environments. Strong technical knowledge of web application security, infrastructure as code (IaC), container security, and API security. Familiarity with cloud security (AWS, Azure, GCP) and containerized environments (Docker, Kubernetes). Familiarity with SAST, DAST, and IAST tools. Deep understanding of common vulnerabilities (e.g., OWASP Top 10) and their mitigations. Advanced understanding and experience with writing source code (e.g., JavaScript, Java, C/C++/C#, Python, etc.) and familiarity with software security frameworks (e.g., Maven, Node, Gradle, etc.). Experience with identifying security vulnerabilities/defects in dockers, containers, and Kubernetes. Experience with cloud deployment and automation tools (Terraform, GitHub Actions, Jenkins, AWS Cloud Formation Templates, Secrets Managers). Experience with incident response in the Cybersecurity space Knowledge of compliance and regulatory frameworks (SOC 2, etc.). LI-SC1 MassMutual is an equal employment opportunity employer. We welcome all persons to apply. If you need an accommodation to complete the application process, please contact us and share the specifics of the assistance you need. California residents: For detailed information about your rights under the California Consumer Privacy Act (CCPA), please visit our California Consumer Privacy Act Disclosures page.

Keywords: MassMutual, New York , Application Security Engineer, IT / Software / Systems , New York City, New York