Tech Lead, Infrastructure

Overview

About Light field
Light field 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.

Light field is rethinking CRM from first principles. Instead of forcing teams to maintain rigid systems, Light field 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 team previously built Tome, a generative AI presentation product used by over 25 million people.

Before Tome, many of us worked on Llama, Instagram, Facebook Messenger, Pinterest, Google, and Salesforce.

• Own and improve the reliability and performance of Light field’s infrastructure as customer scale accelerates
• Lead efforts to reduce database latency and optimize Postgres performance for large, high-volume workloads
• Strengthen operational maturity across the stack, including observability, incident response, and production readiness
• Build scalable systems and infrastructure patterns to support larger customers and increasing usage
• Partner closely with product and engineering leadership to prioritize the most critical infrastructure work at each stage of growth
• Help define the the longer-term infrastructure roadmap, with the opportunity to influence future team shape over time

• 8–12+ years of experience building and scaling infrastructure and production systems in high-growth environments
• Deep expertise in infrastructure-heavy engineering (SRE, reliability, performance, scaling) rather than data pipeline–focused roles
• Strong hands-on coding ability and comfort owning critical systems end-to-end
• Experience with Postgres performance tuning, query optimization, and scaling database-backed applications
• Strong operational instincts: monitoring, on-call practices, debugging, and systems-level problem solving
• Product-oriented mindset — motivated by customer-facing performance and real-world reliability
• Comfort operating in ambiguity at an early-stage company, where priorities evolve quickly and ownership is high

Light field is entering a key scaling inflection point: infrastructure built for early customers is now supporting much larger teams and more demanding workloads. This is a rare opportunity to join at the moment where foundational systems work will directly shape the next phase of growth.

• 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

Compensation Range: $200K - $350K