Senior Software Engineer - Backend

Harmonic

$150K — $180K *
Enterprise Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 6+ years of experience as a software engineer, particularly in building large-scale data infrastructure.
  • Strong product sense with the ability to discern valuable data extraction and structuring.
  • Experience designing data models, selecting indexing strategies, and creating user-friendly serving paths.
  • Passion for product development, balancing infrastructure concerns with customer experience.
  • Proficient in managing raw, unstructured data to create reliable data systems.
  • Familiarity with LLM extraction, search systems, or venture capital/market intelligence is a plus.

Responsibilities

  • Architect and manage large-scale data pipelines for startup and investment understanding.
  • Ensure high standards in data quality, including coverage, accuracy, and freshness.
  • Develop LLM-powered workflows for data extraction and reconciliation, validating their effectiveness.
  • Integrate backend, databases, and APIs to deliver functional data within products.
  • Collaborate with cross-functional teams to launch new data products for customers.

Benefits

  • Opportunity for significant ownership over product and data.
  • Work in a fast-paced and rapidly growing environment.
  • Engagement with cutting-edge technologies like LLMs and dynamic workflows.
  • Collaborative culture with cross-team partnerships.
  • Real impact on understanding startups and investments through data.
Full Job Description
About the Team

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.

Who You Are
  • You have 6+ years of experience as a software engineer and a track record of building data infrastructure at scale, ideally somewhere that was growing fast enough to break things.
  • You have real product sense. You can 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.
  • You think in systems. You've designed data models, picked indexing strategies, and built serving paths that hold up under both load and a user's patience.
  • You want 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.
  • You've spent real time wrangling raw, messy, real-world data into something structured and reliable, whether you came up through data engineering or full-stack.
  • Bonus points if you've worked with LLM-powered extraction, search systems, or agentic workflows, or spent time around venture capital, private markets, or company intelligence data.

What You'll Do
  • 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.

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