Software Engineer, Anti-Adblock

Job Description
This role is preferred on-site in NYC, but the team is open to more Sr candidates that lives within the continental US. /n /n About Ad-Shield /n Billions of ad impressions disappear every day because of ad blockers, destroying over $200B in publisher revenue annually. Ad-Shield builds next-generation adblock recovery technology that helps publisher restore this lost revenue and turn blocked traffic into a sustainable revenue channel. /n We are one of the fastest-growing teams in global ad-tech. With a lean, high-leverage team, we generate millions of dollars in revenue per employee and are scaling an 8-figure net revenue portfolio toward 9-figure potential. /n

About the Role
/n We are looking for a software engineer to work on our anti-adblock systems. You will investigate new blocking behavior, reproduce failures, and build reliable solutions across our runtime, delivery, detection, and edge systems. /n The work combines technical research with production engineering. The goal is to turn individual incidents into product improvements that work across publishers, rather than apply one-off patches. Prior anti-adblock experience is not required. /n /n What You Will Do /n /n
- Investigate new blocking behavior across browser extensions, filter rules, scriptlets, browser APIs, and network-level tools. /n
- Build and improve the runtime, script delivery, detection, fallback, and edge systems behind our product. /n
- Own problems from reproduction and root-cause analysis through implementation, rollout, and verification. /n
- Turn recurring failures into reusable defenses, regression tests, monitoring, and safer rollout practices. /n
- Define and track reliability metrics such as coverage, false positives, page integrity, and time to detection and recovery. /n /n /n Qualifications /n /n
- Strong software engineering fundamentals and the judgment to work independently in unfamiliar codebases. /n
- Strong JavaScript or TypeScript skills and a solid understanding of browsers, the DOM, HTTP, networking, caching, and CDNs. /n
- Strong debugging and research skills. You can reproduce inconsistent behavior, inspect runtime and network state, and test hypotheses with evidence. /n
- A systems mindset, with attention to observability, failure modes, regression prevention, and rollout safety. /n
- End-to-end ownership from research and technical design through implementation, deployment, monitoring, and retrospective improvement. /n /n /n Nice to Have /n /n
- Experience with browser internals, browser extensions, or content-filtering technologies such as CSP, Service Workers, filter rules, or scriptlets. /n
- Experience with reverse engineering, security research, anti-tampering, or other adversarial systems. /n
- Experience with Cloudflare Workers, CDNs, edge computing, or high-traffic web infrastructure. /n
- Experience with browser automation, E2E testing, monitoring, or incident response. /n
- Familiarity with GAM, Prebid, header bidding, IVT, consent platforms, or publisher monetization. /n /n