Software Engineer, Infrastructure (Staff)

Lightfield; San Francisco (CA); On-site; USD 180,000 - 280,000; Full time

Benefits offered by this job

Competitive salary

Meaningful equity

Health insurance

3 weeks PTO

11 holidays + winter break

3 months family leave

Wednesdays work from home

Team events & retreats

401k plan

Commuter and lunch stipend

Job summary

Lightfield is hiring an experienced engineer to architect, build, and scale the core infrastructure powering our AI-driven CRM. You will own data models, backend services, and the data platform, ensuring performance, scalability, and resilience.

You’ll collaborate across teams, mentor others, and help recruit top engineers while delivering systems that enable AI features and robust CRM workflows.

Qualifications

• 5+ years in software development with backend and data infra focus.
• Experience building scalable data infrastructure.
• Strong PostgreSQL design and optimization.
• Interest in LLMs and AI-powered CRM.
• Proficiency with TypeScript, React, Next.js, Node.js, GraphQL, PostgreSQL.
• Clear communication for technical and non-technical stakeholders.

Responsibilities

• Build and maintain full-stack systems end-to-end with reliability, scalability, and performance.
• Architect and scale data infrastructure and backend services powering Lightfield AI-driven CRM.
• Design and optimize data models to support CRM workflows and AI insights.
• Develop observability and metrics for smooth operation and proactive issue detection.
• Mentor teammates, participate in code reviews, and shape engineering culture.

Skills

Backend systems

Data modeling

PostgreSQL

TypeScript

React

Next.js

Node.js

GraphQL

LLMs

Communication

Education

Bachelor's degree in Computer Science or related field

Job description

About Lightfield

Lightfield is an AI-native CRM that assembles 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. Instead of forcing teams to maintain rigid systems, Lightfield learns from how companies actually work, adapting, automating, and surfacing the insight that drives growth. We’re building the CRM platform we always wished existed: fast, intelligent, and genuinely helpful.

We are backed by Greylock, Lightspeed, and Coatue, and our founders previously built Tome, a generative AI presentation product used by over 25 million people. Before Lightfield, our team worked on Llama, Instagram, Facebook Messenger, Pinterest, Google, and Salesforce.

About the role

We’re looking for an experienced, creative, and versatile engineer who is eager to tackle the challenge of architecting, building, and scaling the core infrastructure and systems powering Lightfield's AI-driven CRM.

At Lightfield, engineers take ownership of projects from inception to impact, collaborating across functions and pushing the envelope on what’s possible in applied AI and data systems. You’ll play a critical role in designing and building the data models and infrastructure that support a next-generation CRM, ensuring our system is performant, scalable, and resilient.

What you’ll do

• 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.

Who you are

• 5+ 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 & Perks

• 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