Engineering Manager, Infrastructure at Lightfield in San Francisco, CA

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 JOB Lightfield is seeking a hands-on Infrastructure Tech Lead to help scale the platform through a period of rapid growth and increasing customer demand (and beyond!). After emerging from private beta, we’ve seen strong adoption from thousands of businesses, including larger, more mature teams using the product in production-critical ways. We’re doubling active users every two weeks, our event throughput has 100x’d, and the infrastructure is being pushed into a new phase. This role will be central to ensuring the platform remains fast, reliable, and resilient as Lightfield expands into larger enterprise use cases. We’re looking for a Head of Infrastructure to build the infrastructure engineering function as a hybrid platform team. Some engineers work directly on foundational systems — reliability, scalability, observability, developer infrastructure, data systems, and service health — while others embed directly into product initiatives to help architect and deliver systems that can scale from day one. WHAT YOU’LL DO - Operating as a player-coach, build and lead a high-performing infrastructure engineering team spanning staff-level technical leaders through earlier-career engineers, balancing deep expertise, mentorship, and growth - Own and improve the reliability and performance of Lightfield’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 - Define the the longer-term infrastructure roadmap and a organizational development strategy to support it WHO YOU ARE - 7-10+ years of experience building and scaling infrastructure and production systems in high-growth environments - 3+ years of experience leading as a TL, 1+ years leading as a manager - 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 WHY THIS ROLE Lightfield 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. 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