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San Francisco, California, USA On-site Full-time USD 150,000 – 300,000 / year

Lightfield is hiring a Software Engineer, Infrastructure

Responsibilities

  • Build and maintain full-stack systems, end-to-end, ensuring reliability, scalability, and performance.
  • Architect and scale the data infrastructure and backend services that power Lightfield AI-driven CRM.
  • Design and optimize data models to support CRM workflows, customer interactions, and AI-driven insights.
  • 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.

Requirements

  • 3+ years of experience in software development, with a strong background in infrastructure, data modeling, and backend systems.
  • Deep experience building scalable, high-performance data infrastructure that can support complex customer workflows and large-scale data processing.
  • Strong understanding of database design, indexing strategies, and query optimization, especially in PostgreSQL or similar relational databases.
  • You’re excited about Large Language Models (LLMs) and the opportunity to build systems that support and leverage them.
  • You have the ability to ramp quickly on tech stack that features TypeScript, React, Next.js, Node.js, Apollo GraphQL, and PostgreSQL.
  • 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

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

Lightfield is an AI-native CRM for early stage teams built to capture, analyze, and understand everything about their customer.

We're creating software that helps founders build better businesses. Our mission is to help founders build better businesses by enabling deep customer understanding — knowing not just who your customers are, but why they buy, where they get value, and what keeps them coming back.

We believe the best companies are built on a world model of their business — one that remembers every conversation, preserves the reasoning behind every decision, and makes that knowledge accessible to everyone building the product. This is what we’re building at Lightfield: your foundational infrastructure for customer understanding.

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Job Details
Department Engineering
Category infrastructure
Posted 2 hours ago