Senior Software Engineer, Discovery - Semantic Search & RAG

About the position

Harmonic is the startup discovery engine dedicated to mapping out the startup landscape and building tools that ensure promising founders get found and funded. The Discovery team is at the core of Harmonic’s product and data engine, enabling users to search, research, analyze, compare, and evaluate startups. The role involves owning semantic understanding, improving semantic search precision and recall, and architecting systems for personalized search results. The position requires cross-team leadership and collaboration to generalize search architecture for platform-wide use.

Responsibilities

• Lead the strategy and roadmap to improve semantic search precision and recall outcomes.
• Structure data for embeddings and fine-tune embedding models.
• Experiment with and implement novel approaches to improve search results.
• Design and build systems that leverage high-value data for real-time, individualized responses.
• Partner with infrastructure teams to generalize search and RAG architecture for platform-wide use.

Requirements

• 6+ years of experience as a software engineer.
• Proven track record optimizing semantic search, embeddings, vector stores, or ranking pipelines.
• Hands-on experience with LLM-powered search, RAG implementations, or agentic workflows.
• Strong systems-level thinking with experience in designing data models and indexing strategies.

Benefits

• 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.