JavascriptEngineer(IV-V)

Please note: Due to high application volume, we’re unable to respond to messages or accept resumes sent through email or other platforms. Please apply through this page only! About Confiant Confiant is cybersecurity built for advertising. We secure the ad economy from the inside out, providing real-time intelligence and precise controls that detect and block malvertising, scams, disruptive creatives, and compliance risks before they reach users. By disrupting the business models of bad actors, Confiant empowers digital media to enforce standards, ensure quality, and uphold trust across the ad economy. We protect what matters most — revenue, reputation, and relationships — securing the foundation that allows good advertising to thrive. About The Team We are a small but growing engineering team focused on high standards, collaboration, continuous improvement, and end-to-end ownership. Our rapidly evolving tech stack powers large-scale ETL systems, APIs, embedded systems, and SDKs that process tens of millions of transactions daily for leading AdTech companies. The Engineering team partners closely with security researchers to turn threat intelligence into SDK-level detections and partner with Core engineering team to ensure seamless backend integration. Engineers own the full lifecycle of problem-solving—from design and implementation to customer impact and operational support. We are a 100% virtual company, and all our team members work from home worldwide. We support optional monthly gatherings in New York City (our original home) and quarterly on-sites in various locations across the world in order to maintain the human connection and trust required to be a high-performing organization. Role Overview We are seeking an experienced JavaScript Engineer to be part of the team that owns and evolves the core client-side SDK that sits at the heart of Confiant's malvertising detection and blocking technology. This is a deeply technical, specialized role focused on building