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Senior Software Engineer, Discovery - Semantic Search & RAG (New York)

Senior Software Engineer, Discovery - Semantic Search & RAG (New York)

HarmonicNew York, NY, United States
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Senior Software Engineer, Discovery - Semantic Search & RAG

Harmonic is the startup discovery engine. It pains us to see great startup opportunities consistently go undiscovered. So, we dedicated ourselves to mapping out the startup landscape and building the tools that ensure the most promising founders get found and funded.

The world's largest and most prolific venture capital firms (as well as the up-and-comers you haven't heard of yet) rely on us to find and invest in the next Google, AirBnB, Uber, Stripe, and Anduril. We play a crucial part in ensuring hundreds of billions of dollars get routed efficiently and that the innovations the world would most benefit from materialize.

We are on pace to double revenue over the next twelve months and already power thousands of investors' workflow. Backed by $30M from investors like Craft, Floodgate, and Sozo Ventures, we want to power the entire investment workflow from discovery to term sheet. If you resonate with our values and want to fundamentally evolve how venture capital markets work, come join us.

The Role

Scope of the role :

  • Own semantic understanding : Semantic search is one of our most valuable features - it enables our users to describe a company or market problem as they see fit, and find the most compelling startups in that space. It still has so much room for improvement, and every margin of improvement translates to our customers finding better opportunities, and more innovation getting funded.

You will lead the strategy and roadmap to improve and evolve semantic search precision and recall outcomes. This spans everything from structuring data for embeddings and fine-tuning embedding models through to creative retrieval and ranking strategies. You'll experiment with and implement novel approaches to continually increment towards perfect search results.

  • Architect RAG + personalization : Harmonic is becoming a centralized repository for all of a customer's startup engagement and investments. As we contextualize user's implicit interactions and explicitly provided content, we can further personalize search results and research answers, helping them find the most relevant opportunities that align with their investment thesis.
  • To drive this, you will own designing and building systems that persist and leverage high value data to produce outcomes with real-time, individualized responses. Think storage and RAG over data like : notes, pitch decks, correspondences plus prior search queries, engagement patterns, and long-term-memory stores.

  • Cross-team leadership : Partner with infra to generalize your search and RAG architecture for platform-wide use, and drive integration in features across product engineering teams.
  • Background we're looking for :

  • 6+ years of experience as a software engineer, with flexibility for exceptional candidates
  • Proven track record optimizing semantic search, embeddings, vector stores, or ranking pipelines to drive measurable improvements in relevance and recall
  • Hands-on experience with LLM-powered search, RAG implementations, or agentic workflows
  • Strong systems-level thinking : you've designed data models, chosen indexing strategies, and built serving paths optimized for both performance and user experience
  • Pay : $180k-$220k Salary + Equity depending on the level

    The Process

    Here's our interview process :

  • Recruiter Screening : 20-30 mins
  • Technical Screening (System Design) : 45 mins
  • Technical Screening (Coding) : 2 hrs & behavioral interview with Head of Eng : 45 mins
  • Chat with our CEO : 30 mins
  • References
  • Benefits

  • Top of the line health, dental and vision insurance, with 100% premium covered
  • 401k matching
  • Free lunch in office
  • Monthly team dinner (we have a lot of foodies) for each office
  • Commuter benefits
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