SDK Engineer (Java Script)

Role Overview: As a SDK Engineer for Browser API at AdPushup, you will be responsible for engineering the core JavaScript product, focusing on a high-performance script that optimizes ad delivery and layout on customer websites. This role will involve working at the intersection of browser internals, web performance, and backend services to design systems handling billions of impressions per month. It is a Senior JavaScript Engineer role requiring expertise in Vanilla JS as an Individual Contributor (IC). Key Responsibilities: - Own the design and development of the client-side JavaScript engine for real-time optimization of ad delivery and layout - Collaborate with Product, Revenue, and Ad Ops teams to implement revenue-driving features - Participate in LLD and HLD discussions for frontend and backend initiatives - Conduct code reviews, enforce engineering best practices, and troubleshoot production issues - Mentor junior engineers on technical architecture and performance tuning - Contribute to enhancing development processes, automation, and observability - Support project management efforts for timely delivery of initiatives Qualifications Required: - 6 - 10 years of frontend-focused product engineering experience with a strong track record in production systems - Proficiency in JavaScript, particularly vanilla JS and modern browser APIs, along with expertise in designing high-performance client-side code - Experience with Node.js, Express.js, and TypeScript, as well as knowledge of web security and cross-browser compatibility challenges - Familiarity with system design principles, code versioning tools, and CI/CD workflows - Bonus: Exposure to Java, Docker, ReactJS, SQL Server, or NoSQL databases If you are passionate about browser internals, JavaScript performance, and scaling systems, joining AdPushup will provide you with the opportunity to make a direct impact on revenue-generating products, grow into a Staff Engineer role, and work in a culture that values transparency, autonomy, and learning.,