Startups · AI

Senior Software Engineer, Agentic Search

Ironclad · San Francisco · Remote

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About Ironclad

Backed by Accel, Sequoia and Y Combinator.

About the role

Agentic search systems : Evolve the architecture that combines LLM and retrieval system to produce optimal answer for complex or ambiguous questions. Eval-driven development : Design and run the benchmarks and experiments that measure search quality, and use that feedback to improve the system.

What they're looking for

  • 4 years experience building production systems, with hands-on experience in search, information retrieval, content understanding or recommendation systems at meaningful scale
  • Demonstrated expertise in one of: learned/hybrid retrieval (lexical + vector + reranking), query understanding/NLU pipelines, or production LLM agent systems — ideally more than one
  • Experience with search frameworks (Elasticsearch or equivalent — Solr, Vespa, OpenSearch, embedding search) in production, including relevance tuning and reranking
  • Fluency with modern LLM APIs and multi-provider orchestration (Anthropic, OpenAI, Google) — reasoning about token budgets, provider-specific tool-calling semantics, and prompt-caching trade-offs
  • Experience building eval-driven workflow — offline benchmarks, regression detection, structured A/B comparison — as opposed to shipping and hoping
  • Strong ownership and communication
More about this role

Build AI contracting at enterprise scale. Ship it fast.

Ironclad is building AI on one of the most consequential datasets in enterprise software: over 2 billion contracts across thousands of the world's largest organizations. Contracts run every dollar, deal, and business relationship on the planet, and the AI transformation of this space is still largely uncharted. Engineers here are building agentic solutions to problems that haven't been solved yet, in a category that's still being defined. The feedback loop is short, the data is rich, and the people closest to the work are the ones deciding what gets built next. That ability to deliver impact quickly is why the the companies at the forefront of AI choose Ironclad to manage their contracts.

We’re consistently recognized as a leader in the industry: a Leader in the Forrester Wave and Gartner Magic Quadrant for Contract Lifecycle Management, a Fortune Great Place to Work, and one of Fast Company’s Most Innovative Workplaces. Ironclad has also been named to Forbes’ AI 50 and Business Insider’s list of Companies to Bet Your Career On. We’re backed by leading investors including Accel, Y Combinator, Sequoia, BOND, and Franklin...

Read the full posting on Ironclad's site ↗

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