SDK Engineer (Java Script)

Role Overview: You will be joining AdPushup as a Senior JavaScript Engineer with expertise in Vanilla JS, focusing on engineering the core JavaScript product. This role involves working on a high-performance script that runs on customer websites, at the intersection of browser internals, web performance, and backend services. Your responsibilities will include designing systems that handle billions of impressions per month. Key Responsibilities: - Own the design and development of the client-side JavaScript engine for optimizing ad delivery and layout in real-time - Collaborate with Product, Revenue, and Ad Ops teams to identify and build revenue-driving features - Participate in LLD (Low-Level Design) and HLD (High-Level Design) discussions for frontend and backend initiatives - Perform code reviews, drive engineering best practices, and troubleshoot production issues - Mentor junior engineers, contribute to process improvements, and support project management efforts Qualifications Required: - 6 - 10 years of experience in frontend-focused product engineering, with strong contributions to production systems - Mastery of JavaScript, especially vanilla JS and modern browser APIs - Expertise in designing resilient, high-performance client-side code - Experience with Node.js, Express.js, TypeScript, and modern ES6+ JavaScript practices - Deep understanding of web security, HTTP protocols, and cross-browser compatibility challenges - Solid knowledge of system design principles, scalability, and performance trade-offs - Familiarity with code versioning tools, CI/CD workflows, and bonus exposure to Java, Docker, ReactJS, SQL Server, or NoSQL databases Additional Company Details (if applicable): AdPushup is an award-winning ad revenue optimization platform and a Google Certified Publishing Partner (GCPP). The company helps web publishers grow their revenue using cutting-edge technology and premium demand partnerships. The work culture values expertise, ownership, and collaboration. Joining AdPushup means working on technically challenging problems directly impacting revenue, with opportunities for career growth and collaboration in a supportive environment.,