Senior Application Security Engineer

Senior Application Security Engineer in Canada and USA

Apollo.io, a leading go-to-market solution for revenue teams trusted by over 500,000 companies, is seeking a Senior Application Security Engineer for a remote or hybrid arrangement across Canada and the USA. This senior level healthcare and technology role requires a candidate with a Bachelor's degree and 5+ years of relevant experience. Founded in 2015 and valued at $1.6 billion, Apollo.io provides verified B2B contact data and outreach tools through a unified platform.

Role Responsibilities and Expectations

Operating as a senior individual contributor at the L6 level, you will strengthen Apollo's secure software development lifecycle and reduce application risk across product, platform, and AI-powered features. Your core responsibilities include:

• Owning and improving the secure software development lifecycle, design reviews, and threat modeling for high-impact features before launch.
• Driving execution-heavy vulnerability management across internal reviews, bug bounties, pentests, and SCA findings within established SLAs.
• Performing hands-on code-level analysis, remediation support, and offensive security testing to address authentication flaws, access control risks, SSRF, and dependency vulnerabilities.
• Configuring AppSec tooling, automating workflows, and leveraging AI to scale operations responsibly.

Candidates should apply through the official Apollo.io careers portal to submit their application for this Senior Application Security Engineer position.