Senior Application Security Engineer

At Webflow, our mission is to bring development superpowers to everyone. As the pioneer of the Website Experience Platform (WXP), we’re redefining how teams Build, Manage, and Optimize for the web — combining visual development, powerful content management systems, AI-driven personalization, seamless hosting, and end-to-end analytics in a single, unified platform. With AI at the core, Webflow helps teams move faster, create more performant digital experiences, and scale without heavy engineering support. From independent designers and creative agencies to global enterprises, hundreds of thousands of organizations use Webflow to turn ideas into reality — and to power what’s possible on the web. We’re looking for a Senior Application Security Engineer to help us level up Webflow’s secure development practices ranging from secure coding, tooling, and improving procedures. About the role: Location: Remote-first (United States; BC ON, Canada) Full-time Temporary Exempt The cash compensation for this role is tailored to align with the cost of labor in different geographic markets. We've structured the base pay ranges for this role into zones for our geographic markets, and the specific base pay within the range will be determined by the candidate’s geographic location, job-related experience, knowledge, qualifications, and skills. United States (all figures cited below are in USD and pertain to workers in the United States) Zone A: $158,000 - $238,000 Zone B: $149,000 - $224,000 Zone C: $139,000 - $210,000 Canada (figures cited below are in CAD and pertain to workers in ON BC, Canada) $199,000 - $250,000 This role is also eligible to participate in Webflow's company-wide bonus program. Target amounts are a percentage of base salary and vary by career level. Payouts are based on company performance against established financial and operational goals. Please visit our Careers page for more information on which locations are included in each of our geographic pay zones. However, please confirm the zone for your specific location with your recruiter. Reporting to the Sr. Manager, Application Security As a Senior Application Security Engineer, you’ll… Collaborate with the Webflow engineering team to secure Webflow’s web application platform and ecosystem. Bring security best practices to the software development lifecycle. Work as part of a team to champion security standards while balancing business strategies and requirements. Support Webflow’s security current and future compliance frameworks Work to find security vulnerabilities through grey-box techniques, and propose solutions at the architecture and code level to mitigate findings. Contribute code and architecture improvements to enable security within Webflow’s application for engineers. Cross-train entry level application security engineers In addition to the responsibilities outlined above, at Webflow we will support you in identifying where your interests and development opportunities lie and we'll help you incorporate them into your role. About you: Requirements: BA/BS degree or equivalent experience You bring 5+ years of application security experience , including hands-on software development , and have worked on securing high-complexity, large-scale applications . You have experience in secure software design, secure coding, and modern web application security , with ability to identify security design flaws and business-logic vulnerabilities , and to drive risk-based remediation with engineering teams. You have led threat modeling efforts , and/or conducted penetration testing , or manage third-party pentests , ensuring findings are clearly documented, communicated, and remediated to completion. You have managed one or more of application security programs or tooling initiatives such as SCA Supply Chain, SAST, DAST and /or led bug bounty programs You have contributed to security controls within large-scale solutions , inclu ... (truncated, view full listing at source)