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Tech Lead, Infrastructure & Data

Tech Lead, Infrastructure & Data

LightfieldSan Francisco, CA, United States
30+ days ago
Job type
  • Full-time
Job description

Tech Lead, Infrastructure & Data at Lightfield

Base pay range

$150,000.00 / yr - $300,000.00 / yr

About Lightfield

Lightfield is an AI‑native CRM that builds itself from your email, calendar, and meetings. It captures every interaction and turns it into organized context—accounts, tasks, follow‑ups, and insights—so nothing slips through the cracks. We’re rethinking CRM from first principles, learning from how companies actually work to adapt, automate and surface the insights that drive growth. We’re building the CRM platform we always wished existed : fast, intelligent, and genuinely helpful. Lightfield is backed by Greylock, Lightspeed and Coatue. Our team previously built Tome, a generative AI presentation product used by over 25 million people, and many of us have experience at Llama, Instagram, Facebook Messenger, Pinterest, Google and Salesforce.

About The Role

The heart of a CRM is its data model. The ability to collect, store, organize and retrieve the right data for the right application is absolutely crucial to Lightfield’s success. Lightfield stores orders of magnitude more data than a traditional CRM, and that data must be appropriately organised for both LLMs and humans. No one has built a product like this at scale. You’ll be a founding member of a new team, inventing the data infrastructure and retrieval systems that power the CRM, working closely with the founders every day and participating in every important discussion at the company.

What You’ll Do

  • Architect and scale the data infrastructure, search and retrieval systems that power Lightfield’s AI‑driven CRM.
  • Design and optimise data models and indexing strategies to support CRM workflows, AI‑driven insights and contextual search.
  • Build and maintain full‑stack systems end‑to‑end, ensuring reliability, scalability and performance.
  • Develop observability and metrics to enable smooth operation, proactive issue detection and continuous improvement.
  • Mentor teammates, participate in code reviews and help shape engineering culture and practices.
  • Contribute to building a world‑class engineering team through recruiting, mentorship and knowledge‑sharing.

Who You Are

  • 10+ years of experience in development, with a strong background in infrastructure, data modelling and backend systems.
  • Deep experience building scalable, high‑performance data infrastructure that supports large‑scale data processing and retrieval.
  • Strong understanding of database design, indexing strategies and query optimisation, especially in PostgreSQL or similar relational databases.
  • Experience with full‑text search infrastructure (e.g. Typesense) to enable fast, structured query capabilities.
  • Experience with vector search and semantic retrieval (e.g. Pinecone) to support AI‑driven contextual understanding and recommendations.
  • Experience with graph databases (e.g. Neo4j) to model complex relationships is a plus.
  • Enthusiastic about Large Language Models (LLMs) and building systems that leverage them for search, retrieval and automated insights.
  • Ability to ramp quickly on a stack featuring TypeScript, React, Next.js, Node.js, Apollo GraphQL, PostgreSQL, Typesense and Pinecone.
  • Strong fundamentals in software engineering, with a degree in Computer Science or a related field.
  • Thrives in ambiguity, able to independently drive projects and deliver results in a fast‑moving environment.
  • Clear communicator, capable of articulating technical decisions to both technical and non‑technical stakeholders.
  • Passionate about building products customers love, ensuring our CRM is intuitive, intelligent and indispensable.

    • Benefits & Perks

  • Competitive salary
  • Meaningful early equity
  • Health insurance (medical, dental, vision)
  • 3 weeks of PTO
  • 11 paid company holidays + winter holiday break
  • 3 months of paid family leave
  • Wednesdays work from home
  • Regular team dinners, events, offsites and retreats
  • 401(k) plan
  • Other perks include commuter and lunch stipend

    • Referrals increase your chances of interviewing at Lightfield by 2x

    Seniority level

    Mid‑Senior level

    Employment type

    Full‑time

    Job function

    Information Technology

    Industries

    Technology, Information and Internet

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    Tech Lead Data • San Francisco, CA, United States