Staff Software Engineer, Infrastructure

Lightfield; San Francisco (CA); Hybrid; USD 180,000 - 240,000; Full time

Benefits offered by this job

Competitive salary

Meaningful early equity

Health insurance (medical, dental, and

3 weeks PTO

11 paid company holidays + winter hol

3 months paid family leave

Wednesdays work from home

Regular team dinners and offsites

401k plan

Commuter and lunch stipend

Job summary

Lightfield is seeking an experienced software engineer to architect, build, and scale the core infrastructure powering its AI-driven CRM. You will own data models and backend services, focusing on performance, reliability, and scalability across teams and data workflows.

You will contribute to building a world-class engineering culture, mentor peers, and drive observability, metrics, and best practices to support rapid delivery in a fast-moving environment.

Qualifications

• 7+ years of experience in software development with infrastructure, data modeling, and backend systems.
• Deep experience building scalable data infrastructure for complex customer workflows and large-scale data processing.
• Strong understanding of database design, indexing, 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.

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.

Skills

Data modeling

Backend systems

Infrastructure engineering

PostgreSQL expertise

Distributed systems

Mentorship

Education

Bachelor's degree in Computer Science

Tools

TypeScript

React

Next.js

Node.js

Apollo GraphQL

PostgreSQL

Job description

About Lightfield

Lightfield is reimagining CRM as a world model of a business. By learning from emails, meetings, and customer conversations, we’re building a living understanding of how a company works—so AI can help teams anticipate what comes next, make better decisions, and take action.

More than 5,000 companies have used the product since its November launch. We’ve raised more than $70M from Andreessen Horowitz, Coatue, Maverick Ventures, and Greylock to attack the biggest software category in the world. We previously built Tome, which reached more than 25 million users, and our team brings experience from Llama, Instagram, 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

• 7+ 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