Senior Software Engineer - Backend

Harmonic • New York, NY

73d • $180,000 - $220,000

About The Position

Harmonic helps startups get discovered by the investors, customers, partners, and talent that will change the trajectory of their company. We are a living, breathing record of the innovation economy. Allowing our customers to understand who matters, what’s happening, where to look next, and how to make decisions. We're doubling revenue annually, profitable, and backed with $30M from Craft, Floodgate, Sozo Ventures, and plenty of other industry leaders. We're committed to ensuring hundreds of billions of dollars find the right founders, so the innovations that matter most flourish. This team sits at the epicenter of everything Harmonic builds. We ingest, reconcile, and continuously improve the data that underpins how we understand startups, people, and investors: funding activity, company data, and people data, three areas the business depends on more with every new market we enter. We're not just pipeline builders. When new data needs a home in the product, whether that's a new field in the console or an entirely new surface, this team builds it. Real ownership over both the data and the product it becomes: that's what makes this team exciting.

Requirements

• 6+ years of experience as a software engineer
• Track record of building data infrastructure at scale
• Real product sense. Ability to reason about what data is actually worth extracting, how it should be structured and served, and how someone will use it once it's in front of them.
• Think in systems. Experience designing data models, picking indexing strategies, and building serving paths that hold up under both load and a user's patience.
• Desire to build product, not just plumbing. Shipping a feature should excite you as much as the infrastructure underneath it, and you think about the customer first, not the schema.
• Spent real time wrangling raw, messy, real-world data into something structured and reliable, whether through data engineering or full-stack experience.

Nice To Haves

• Worked with LLM-powered extraction
• Worked with search systems
• Worked with agentic workflows
• Spent time around venture capital, private markets, or company intelligence data.

Responsibilities

• Architect and run the large-scale pipelines that power how Harmonic understands startups, people, and investments.
• Own our data quality bar (coverage, freshness, accuracy) and go find the new sources and ingestion techniques that raise it.
• Keep pushing our extraction and reconciliation work toward dynamic, LLM-powered agentic workflows, and build the evals that prove they're working.
• Work across the backend, databases, search indices, GraphQL APIs, to bring data to life in the product, and build new features or surfaces when the data calls for them.
• Partner with GTM, Product, Design, and other teams as we ship new data products for customers.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed