Build and maintain high-traffic full-stack web applications using Node.js, React, TypeScript and Next.js. Implement user-facing features, optimize performance, SEO and ad delivery, integrate third-party ad APIs, collaborate with product/design, perform code reviews, and monitor application health using observability tools.

Lead user acquisition and paid media campaigns across Google, Meta and native channels. Manage and scale budgets for ROI/ROAS, run A/B tests, analyze campaign data, optimize CPA/CAC/LTV, and identify new traffic and scaling opportunities, including search arbitrage.