Senior Application Security Engineer

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 .

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.

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