Senior Application Security Engineer
At a glance
Senior Application & Product Security role at Accelerant. Remote, United States · full-time · no salary stated · we estimate $157,247–$221,650 across the United States.
Accelerant has not published a salary for this role. The figure below is our estimate, not theirs.
remoteroles summary, based on the employer's posting.
What you'll do
- Run external penetration tests from scoping and vendor coordination through findings review, remediation tracking and retesting
- Work with development squads to rank and resolve critical and high-severity vulnerabilities and other major application security issues
- Improve scanning and security checks across CI/CD workflows, including SAST, DAST, software composition, containers and secrets
- Maintain WAF rules and API protections, including filtering, rate limits and virtual patching
- Support threat modeling, secure design reviews, incident response, compliance evidence and security guidance for technical teams
What you bring
- At least five years in application security, product security, DevSecOps or a related discipline
- You understand web and API security, including authentication, authorization, sessions, common attack methods and OWASP Top 10
- You have managed external penetration testing or comparable third-party security assessments
- You have integrated security controls into CI/CD workflows and used vulnerability-scanning tools such as Snyk, Qualys or another listed platform
Who this fits
This is a hands-on senior role for someone who can work closely with developers, testing vendors and control owners to turn findings into fixes. It is remote in the United States.
From the employer
About Accelerant
Accelerant is a data-driven risk exchange connecting underwriters of specialty insurance risk with risk capital providers. Accelerant was founded in 2018 by a group of longtime insurance industry executives and technology experts who shared a vision of rebuilding the way risk is exchanged – so that it works better, for everyone. The Accelerant risk exchange does business across more than 20 different countries and 250 specialty products, and we are proud that our insurers have been awarded an AM Best A- (Excellent) rating. For more information, please visit www.accelerant.ai.
About the Position
The Senior Application Security Engineer is a hands-on role within Production Engineering, responsible for improving the security of Accelerant's applications, APIs, cloud services, and software delivery practices.
The role combines application security engineering, vulnerability management, penetration testing, security automation, application perimeter protection, and close partnership with development squads.
A key responsibility will be turning security findings into completed remediation. The successful candidate will work directly with development squads to prioritize and close Critical and High vulnerabilities, using proactive processes and security AI agents to improve triage, exploitability analysis, remediation guidance, and verification.
Role Expectations
• Own and improve application security practices across web applications, APIs, services, and CI/CD pipelines.
• Manage the external penetration testing program, including planning, scoping, scheduling, vendor engagement, communications, findings review, remediation tracking, and retesting.
• Broker the relationship between development teams and third-party penetration testing providers to ensure clear expectations, effective testing, and timely closure of findings.
• Work directly with development squads to prioritize and close Critical and High CVEs and other significant application security findings.
• Build proactive vulnerability remediation processes using approved security AI agents and automation.
• Operate and improve SAST, DAST, SCA, container, secrets, and vulnerability-scanning capabilities within development workflows.
• Maintain and continuously improve WAF policies, application perimeter protections, API security policies, filtering, and rate-limiting controls.
• Support threat modeling, secure design reviews, vulnerability assessments, incident response, and secure coding practices.
• Work with Compliance to gather and maintain evidence supporting ISO 27001, SOX, and SOC 1/2 requirements.
• Partner with Development, Architecture, Cloud/DevOps, Compliance, and other Security disciplines to embed security into delivery practices.
• Provide clear security guidance, documentation, reporting, and education to technical teams.
Technical Skills and Related Experience Required
• 5+ years of experience in application security, product security, DevSecOps, or a related discipline.
• Strong understanding of web application and API security, authentication, authorization, sessions, common attack patterns, and the OWASP Top 10.
• Experience managing external penetration testing or similar third-party security assessment programs.
• Experience with vulnerability management and security-scanning tools such as Snyk, Qualys, Trivy, Dependabot, GitHub Advanced Security, or equivalent platforms.
• Experience integrating security controls into CI/CD pipelines and development workflows.
• Experience with WAF policy management, API security, virtual patching, filtering, rate limiting, and application perimeter protection.
• Practical experience with cloud security, preferably AWS and Kubernetes/EKS.
• Experience with security automation, scripting, or programming, preferably Python.
• Strong communication and relationship-management skills, with the ability to work effectively with developers, vendors, and control owners.
Nice to Have Skills
• Experience using AI-enabled security tooling or automation to support vulnerability triage and remediation.
• Cloudflare Zero Trust and Cloudflare Edge experience.
• OSCP, OSCP+, or an equivalent security certification.
• OSCP, OSCP+, or an equivalent security certification is preferred.
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