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Staff Software Engineer (Frontend), Infra

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Harmonic

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Location:
United States , New York

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

210000.00 - 280000.00 USD / Year
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Job Description:

Staff Software Engineer role in Infrastructure team at Harmonic, a startup discovery engine. The team powers the ability to process millions of startup signals in real-time, focusing on making the frontend fast, reliable, and scalable as the company grows.

Job Responsibility:

  • Fix core reliability issues: error boundaries, state management, data consistency
  • Optimize performance: virtualization for large datasets, bundle optimization, render performance
  • Build monitoring and observability to catch issues before users do
  • Establish testing strategies that prevent regressions
  • Create abstractions and patterns that help engineers ship faster without breaking things
  • Drive technical decisions and mentor the team through complex migrations

Requirements:

  • 7+ years building frontend applications at scale
  • Deep expertise in React, TypeScript, and modern build tooling
  • Track record of fixing production performance issues at scale
  • Strong opinions on frontend architecture, backed by experience
  • NYC-based, in office 3 days/week

Nice to have:

  • Experience with discovery systems, search use cases, recommendation systems (CRM, ATS, etc.), or anything that helps index, document, and make data available for use
  • Exposure to venture capital, private markets, or company intelligence data
What we offer:
  • Top of the line health, dental and vision insurance, with 100% premium covered
  • 401k matching
  • Free lunch in office
  • Monthly team dinner for each office
  • Commuter benefits

Additional Information:

Job Posted:
January 20, 2026

Employment Type:
Fulltime
Work Type:
On-site work
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