Senior JavaScript Engineer

6 days ago

Delhi, Delhi, India AdPushup Full time ₹ 20,00,000 - ₹ 25,00,000 per year

About the Company :

AdPushup is an award-winning ad revenue optimization platform and a Google Certified Publishing Partner (GCPP), helping hundreds of web publishers grow their revenue using cutting-edge technology, premium demand partnerships, and proven ad ops expertise. Our team is a mix of engineers, marketers, product evangelists, and customer success specialists, united by a common goal of helping publishers succeed. We have a work culture that values expertise, ownership, and a collaborative spirit.

About This Role :

This is a Senior JavaScript Engineer role with expertise in Vanilla JS. This is an Individual Contributor (IC) role.

Unlike typical UI-focused frontend positions, this role centers around engineering our core JavaScript product- a high-performance script that runs on customer websites. You will work at the intersection of browser internals, web performance, and backend services, designing systems that handle billions of impressions per month.

Your Day-to-Day Responsibilities :

- Own the design and development of our client-side JavaScript engine that optimizes ad delivery and layout in real-time

- Collaborate closely with Product, Revenue, and Ad Ops teams to identify and build new revenue-driving features

- Participate in LLD (Low-Level Design) and HLD (High-Level Design) discussions for frontend and backend initiatives

- Perform code reviews and drive engineering best practices

- Help troubleshoot and resolve production issues across browser and server environments

- Mentor junior engineers and guide them on technical architecture and performance tuning

- Contribute to improving our development processes, automation, and observability

- Support project management efforts and ensure high-quality, timely delivery of initiatives

You Should Have :

years of experience in frontend-focused product engineering, with strong contributions to production systems

- Mastery of JavaScript, especially vanilla JS and modern browser APIs (closures, prototypal inheritance, DOM manipulation, event loop, async patterns)

- Expertise in designing resilient, high-performance client-side code (not just UI components)

- Experience with and , comfortable working on backend APIs when needed

- Proficiency with TypeScript and modern ES6+ JavaScript practices

- Deep understanding of web security, HTTP protocols, and cross-browser compatibility challenges

- Solid knowledge of system design principles, including scalability and performance trade-offs

- Familiarity with code versioning tools (Git/SVN) and modern CI/CD workflows

Bonus : Exposure to Java, Docker, ReactJS, SQL Server, or NoSQL databases

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