Staff Application Security Engineer

Webflow

4h • $154,000 - $220,000 • Remote

About The Position

At Webflow, we’re building the world’s leading AI-native Digital Experience Platform, and we’re doing it as a remote-first company built on trust, transparency, and a whole lot of creativity. This work takes grit, because we move fast, without ever sacrificing craft or quality. Our mission is to bring development superpowers to everyone. From entrepreneurs launching their first idea to global enterprises scaling their digital presence, we empower teams to design, launch, and optimize for the web without barriers. We believe the future of the web, and work, is more open, more creative, and more equitable. And we’re here to build it together.
We’re looking for a Staff Application Security Engineer to help us level up Webflow’s secure development practices ranging from secure coding, tooling, and improving procedures.

Requirements

• BA/BS degree or equivalent experience
• You bring 7+ years of application security experience, including hands-on software development, and have operated as a technical authority in securing high-complexity, large-scale applications.
• You have deep expertise in secure software design, secure coding, and modern web application security, with a proven ability to identify security design flaws and complex business-logic vulnerabilities, and to drive risk-based remediation with engineering teams.
• You regularly lead threat modeling efforts, conduct and oversee advanced penetration testing, and manage third-party pentests, ensuring findings are clearly documented, communicated, and remediated to completion.
• You have designed, implemented, and evolved software supply chain security programs, and have owned or led bug bounty programs and major security tooling initiatives, shaping strategy rather than acting solely as a contributor.
• You have implemented and improved Secure Development Lifecycle (SDLC) processes at scale, including planning, automation, and cross-org communication, influencing how multiple teams build and ship software securely.
• You have driven multi-quarter application security roadmaps and complex security programs, partnering with engineering, product, and platform teams to deliver durable security outcomes.
• You have led security initiatives within large-scale solutions, including designing and delivering security features directly into applications (e.g., authorization models, security controls, or admin-level protections) in close collaboration with engineering and partner orgs.
• You have experience using and building security solutions that leverage agentic AI, including applying AI coding agents to scale security reviews, detection, and automation responsibly.
• You have participated in and led response efforts for application security incidents, from triage and containment through remediation and post-incident improvements.
• You actively mentor and elevate other application security engineers, and help foster strong security practices and judgment across engineering organizations.
• You are passionate about security, continuously learning, and able to clearly explain complex security concepts to technical and non-technical partners to drive alignment and action.
• Stay curious and open to growth — actively building fluency in emerging technologies like AI to unlock creativity, accelerate progress, and amplify impact.

Responsibilities

• 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 and mid-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.

Benefits

• Ownership in what you help build. Every permanent Webflower receives equity (RSUs) in our growing, privately held company.
• Health coverage that actually covers you. Comprehensive medical, dental, and vision plans for full-time employees and their dependents, with Webflow covering most premiums.
• Support for every stage of family life. 12 weeks of paid parental leave for all parents and 6+ weeks of additional paid leave for birthing parents. Plus inclusive care for family planning, menopause, and midlife transitions.
• Time off that’s actually off. Flexible vacation, paid holidays, and a sabbatical program to help you recharge and come back inspired.
• Wellness for the whole you. Access to mental health resources, therapy and coaching.
• Invest in your future. A 401(k) with 100% employer match (up to $6,000/year) in the U.S., and support for retirement savings globally.
• Monthly stipends that flex with your life. Localized support for work and wellness expenses — from Wi-Fi to workouts.
• Bonus for building together. All full-time, permanent, non-commission employees are eligible for our annual WIN bonus program.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level