Member of technical staff

2 days ago

Gurugram, India Nielsen Full time

Company Description
At Nielsen, we are passionate about our work to power a better media future for all people by providing powerful insights that drive client decisions and deliver extraordinary results. Our talented, global workforce is dedicated to capturing audience engagement with content - wherever and whenever it's consumed. Together, we are proudly rooted in our deep legacy as we stand at the forefront of the media revolution. When you join Nielsen, you will join a dynamic team committed to excellence, perseverance, and the ambition to make an impact together. We champion you, because when you succeed, we do too. We enable your best to power our future.

Job Description
We are looking for a highly skilled Senior JavaScript Developer to join our SDK team. This role is heavily focused on core JavaScript development, performance tuning, and debugging at scale. If you thrive on solving low-level technical problems and have deep understanding of JavaScript internals (beyond the UI), this opportunity is for you.

Qualifications
Key Responsibilities:

  • Architect and build robust, reusable SDK components using modern JavaScript (ES6+).
  • Optimize code for performance, memory usage, and reliability across platforms.
  • Analyze, debug, and resolve complex issues across environments.
  • Write clean, maintainable, and well-tested code with minimal UI footprint.
  • Collaborate with product managers, QA, and backend teams to define and refine SDK features.
  • Work closely with CI/CD and monitoring pipelines for shipping reliable SDKs.
  • Evaluate and integrate with various streaming or analytics platforms (e.g., CTV, mobile apps, web environments).
  • Contribute to core engineering practices, code reviews, and technical documentation.

Required Skills & Qualifications

  • 6+ years of hands-on experience in frontend development.
  • Expert in vanilla JavaScript, including closures, prototypes, scopes, memory leaks, and async behavior.
  • Strong debugging skills across browsers and devices, including source maps, breakpoints, performance profiles.
  • Experience developing or maintaining JavaScript SDKs or libraries used by third parties.
  • Deep understanding of browser internals, event loop, network stack, and performance bottlenecks.
  • Familiar with build tools like Webpack, Rollup, Babel, and packaging standards (UMD, ESM, CJS).
  • Experience with testing tools such as Jest, Mocha, Karma, or Playwright.
  • Comfort with tools like Chrome DevTools, Lighthouse, and Webpack Bundle Analyzer.

Nice-to-Have Skills

  • Familiarity with BrightScript, Roku, or CTV platforms.
  • Prior experience building instrumentation or analytics libraries.
  • Exposure to TypeScript, though deep JS knowledge is primary.
  • Understanding of privacy, security, and consent in SDK integrations.

Additional Information
Please be aware that job-seekers may be at risk of targeting by scammers seeking personal data or money. Nielsen recruiters will only contact you through official job boards, LinkedIn, or email with a domain. Be cautious of any outreach claiming to be from Nielsen via other messaging platforms or personal email addresses. Always verify that email communications come from an address. If you're unsure about the authenticity of a job offer or communication, please contact Nielsen directly through our official website or verified social media channels.

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