Senior Application Security Specialist
Join a leading fintech organization in the U.S., serving millions of employees and backed by top investors. We are seeking a skilled Senior Application Security Specialist to join our growing Security team.
This role demands a proactive approach to secure software development and cloud-native defense. You will partner closely with engineering and development squads, and work alongside our Cloud Security and GRC team members to improve our application and platform security posture.
Key Responsibilities:
* Collaborate with development teams to validate vulnerabilities and provide actionable remediation guidance aligned with business risk.
* Drive threat modeling sessions for critical systems and APIs.
* Design, implement, and oversee automated processes for securely updating application and code dependencies.
* Integrate security checks into CI/CD pipelines using tools like Semgrep, Snyk, Trivy, and Burp Suite.
* Contribute to runtime security initiatives, such as container/Kubernetes hardening, RASP, and eBPF-based detection.
* Build and maintain a security issues dashboard to track remediation status and metrics.
* Provide real-time support in the event of cybersecurity incidents impacting applications or cloud infrastructure.
* Partner with the Cloud Security team on security automation tasks and monitoring improvements.
* Conduct proactive research on new threats, vulnerabilities, and attack techniques relevant to our architecture.
* Collaborate with the GRC team to develop and deliver internal security awareness initiatives, phishing campaigns, and developer training.
* Participate in the continuous improvement of AppSec maturity.
Required Skills and Qualifications:
* Fluent English, including strong verbal and written skills.
* Strong problem-solving and analytical mindset.
* Excellent communication skills to convey security risks to technical and non-technical stakeholders.
* 3–5+ years of experience in application security, penetration testing roles, and/or secure code development, including work with QA teams.
* Hands-on experience with SAST, DAST, and SCA tools (e.g., Semgrep, Burp, Snyk).
* Deep understanding of web, mobile, and API vulnerabilities (OWASP Top 10, API Top 10, MITRE CWE).
* Proven expertise in performing code reviews or security assessments and writing clear reports.
* Proficiency in at least one backend language (e.g., Go, Python, Node.js) and understanding of React/React Native front-ends.
* Familiarity with secure architecture of microservices, event-driven systems, and REST APIs using OAuth2/OpenID Connect.
* Experience securing CI/CD pipelines and integrating AppSec tooling into SDLC.
* Solid knowledge of containerization and Kubernetes security fundamentals.
* Understanding of cloud security (preferably AWS), including IAM principles, cloud-native service configurations, and network segmentation.
* Comfortable with Agile development methodologies and working within cross-functional squads.
* Software supply chain security (e.g., SBOM, artifact signing).
Benefits:
Our company is filled with people who are deeply passionate about our mission, embrace diversity, and grow personally and professionally. We own what we do and let data guide our actions while working quickly and adapting to new challenges every day.
Equal Employment Opportunity: We do not discriminate based on race, religion, color, national origin, ethnicity, gender, sex (including pregnancy), protected veteran status, age, disability, sexual orientation, gender identity, gender expression, or any unlawful criterion under applicable federal, state, or local laws.
Accommodation due to a disability: Please contact us for assistance.
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