Software Engineer, Anti-Adblock

About Ad-Shield

• 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.
• 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.

About the Role

• 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.
• 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.

What You Will Do

• Investigate new blocking behavior across browser extensions, filter rules, scriptlets, browser APIs, and network-level tools.
• Build and improve the runtime, script delivery, detection, fallback, and edge systems behind our product.
• Own problems from reproduction and root-cause analysis through implementation, rollout, and verification.
• Turn recurring failures into reusable defenses, regression tests, monitoring, and safer rollout practices.
• Define and track reliability metrics such as coverage, false positives, page integrity, and time to detection and recovery.

Qualifications

• Strong software engineering fundamentals and the judgment to work independently in unfamiliar codebases.
• Strong JavaScript or TypeScript skills and a solid understanding of browsers, the DOM, HTTP, networking, caching, and CDNs.
• Strong debugging and research skills. You can reproduce inconsistent behavior, inspect runtime and network state, and test hypotheses with evidence.
• A systems mindset, with attention to observability, failure modes, regression prevention, and rollout safety.
• End-to-end ownership from research and technical design through implementation, deployment, monitoring, and retrospective improvement.

Nice to Have

• Experience with browser internals, browser extensions, or content-filtering technologies such as CSP, Service Workers, filter rules, or scriptlets.
• Experience with reverse engineering, security research, anti-tampering, or other adversarial systems.
• Experience with Cloudflare Workers, CDNs, edge computing, or high-traffic web infrastructure.
• Experience with browser automation, E2E testing, monitoring, or incident response.
• Familiarity with GAM, Prebid, header bidding, IVT, consent platforms, or publisher monetization.

Benefits & Perks

• Flexible Remote Work. We trust you to decide where you work best. No rigid office mandates.
• Annual Leave, Granted Upfront. We front-load your annual leave so you can take time off when you actually need it, not when you've earned enough days.
• Lunch Covered. A daily lunch allowance, on us.
• Snacks and Beverages. The office pantry is always stocked.
• Global Exposure. Opportunities for business trips to the U.S. and to work directly from our U.S. office alongside the team there.
• AI Tooling Covered. We cover the cost of the AI tools that make your work better. Use whatever helps you move faster.