Software Engineer, Infrastructure (Staff+)
At a glance
Senior Software Engineering role at Lightfield. San Francisco · full-time · $220,000–$300,000 base.
techroles summary, based on the employer's posting.
What you'll do
- Build and support end-to-end software, keeping it reliable, fast and able to scale
- Design the data foundations and backend services behind the CRM and its AI features
- Shape data models for customer activity, CRM workflows and AI-generated insights
- Add operational metrics and observability so teams can spot issues early and improve service
- Review code, mentor colleagues and help recruit and share knowledge across the engineering team
What you bring
- At least seven years in software development, with substantial work in infrastructure, data models and backend systems
- You have built fast, scalable data infrastructure for complex customer workflows and large data workloads
- You understand relational database design, indexing and query tuning, especially in PostgreSQL or a comparable system
- A computer science degree or a degree in a related field
Who this fits
This suits a staff-level engineer who can independently lead projects through uncertainty and explain technical choices to varied audiences. The role includes mentoring and recruiting alongside hands-on engineering. It is onsite in San Francisco, with Wednesdays designated as work-from-home.
From the employer
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
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Software Engineering$220k+
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