---
title: 'Head of Security at Lightfield'
canonical: 'https://feeny.ai/job/head-of-security-lightfield-san-francisco-5ghenqyn67s9'
type: 'job'
last_seen: '2026-10-27'
---

# Head of Security at Lightfield

- **Company:** Lightfield
- **Location:** San Francisco, CA
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-10-21
- **Last confirmed live:** 2026-10-27
- **Apply:** https://jobs.ashbyhq.com/lightfield/927dc52c-4fbc-410f-a707-7993b6f30215

## 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, deeply technical security leader to build and lead security at Lightfield. Security is fundamental to the product we’re building. Lightfield connects to some of a company’s most sensitive systems and data, including email, calendars, meetings, Slack, and CRM data, and uses that context to power AI agents that can take action on a company’s behalf. You’ll own how we protect that data and build systems our customers can trust. Your scope will span product and infrastructure security, AI and agent security, identity and access, incident response, compliance, and customer security. This is a hands-on role. You’ll work directly in the systems you’re responsible for: reviewing architecture and code, threat modeling new products, investigating vulnerabilities and incidents, implementing security controls, and improving our infrastructure. You’ll set the security strategy, but you’ll also do much of the work to execute it. As the company grows, you’ll build the security team around you. We’re looking for someone who has already led a security function and is excited to get close to the technology again and build the next one from the ground up. You’ll report to the CTO and have significant ownership and visibility across the company.

## What you’ll do

- Own Lightfield’s security strategy and roadmap, identifying the risks that matter most and driving them to resolution.
- Partner with engineers on product and infrastructure security, including architecture reviews, threat modeling, code review, vulnerability remediation, and implementation of security controls.
- Define and evolve the security model for AI agents, including permissions, tool access, sandboxing, data boundaries, and safe execution.
- Build and operate the systems that underpin our security program, including identity and access, vulnerability management, detection and monitoring, incident response, and data protection.
- Lead the response to security incidents and personally dig into the systems, logs, and code needed to understand and resolve them.
- Own our security and compliance program, including SOC 2 and the requirements that come with moving further into the enterprise.
- Work directly with customers and prospects on security reviews, architecture discussions, and complex security requirements.
- Build security into how we operate through good architecture, tooling, and collaboration rather than unnecessary process.
- Build and lead the security team as our needs grow.

## What we’re looking for

- You’ve previously led the security function at a high-growth technology company, with end-to-end responsibility for security.
- You’ve built a security program through a meaningful stage of company growth. You know what to do first, what can wait, and how the function needs to evolve as the company scales.
- You’re a deeply technical security leader who is equally comfortable working in code and infrastructure, setting security strategy, and engaging with executives and customers.
- You have strong application and cloud security expertise and can reason about attack surfaces, trust boundaries, and failure modes.
- You’ve owned security and compliance programs such as SOC 2 and worked directly with enterprise customers and their security teams.
- You have exceptional judgment. You can distinguish material risks from theoretical ones and improve security without unnecessarily slowing the company down.
- You know how to build a security organization: what to own centrally, what to embed in engineering, when to use vendors, and when and whom to hire.
- You’re excited to develop security models for AI agents and other emerging systems where established patterns are still evolving.

## 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

## About Lightfield

## Company Overview
- **One-liner**: Lightfield is an AI-native CRM that automatically captures every customer interaction from email, calendar, and meetings, and builds a living world model of your company’s relationships and decisions.
- **Entity Type**: Private (Startup)
- **Headquarters**: San Francisco, California, United States
- **Founded**: Not publicly available
- **Founders**: Henri Liriani, Keith Peiris

## Core Business
- Primary industry: AI-native CRM / Sales & Customer Relationship Management
- Target customers: B2B sales teams, customer-facing organizations (SMB to mid-market)
- Mission or purpose statement: “Help founders build better businesses” by creating software that provides deep, continuous customer understanding — a world model of your company starting with your customers. [lightfield.app/company](https://lightfield.app/company)

## Products & Services
- **Lightfield Platform (AI-native CRM)** — An open platform that ingests email, calls, and meetings automatically. It offers:
  - **Natural language agents**: Build agents with prompts (no code) to prospect, manage follow-ups, and coach deals.
  - **Automated data capture**: Every interaction is recorded, attributed, and connected into accounts, tasks, and timelines.
  - **Reasoning & automation**: Ask questions like “which customers asked for this feature?” and get answers with citations; automate pipeline updates, enrichment, and revival emails.
  - **Security & compliance**: SOC 2 Type II, HIPAA, ISO 27001. [lightfield.app](https://lightfield.app/)

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Not publicly available (revenue not disclosed)
- **Notable Investors/Partners**: Not publicly available
- **Growth Signals**:
  - Headcount: 31 employees (+192.3% YoY) [linkedin.com/company/lightfld](https://www.linkedin.com/company/lightfld)
  - Active job postings: 16 (up +128.6% YoY)
  - LinkedIn followers: 4,863 (+2709.6% yearly growth)
  - Monthly web traffic: +83.5% (14.2K visits) [same LinkedIn source]
  - Rapid product releases: frequent changelog updates (May/June 2026) with features like API controls, email conversations, custom objects, SSO, and meeting recording. [lightfield.app](https://lightfield.app/)

## Competitive Advantages
- **AI-native, not retrofitted**: Differs from traditional CRMs by capturing raw interaction data (actual words, chronology, causality) rather than manual summaries or fields.
- **World model approach**: A system that understands what happened, why it happened, and what is likely to happen next — enabling safe, high-quality automation and deep customer insights.
- **Strong security posture**: Holds SOC 2 Type II, HIPAA, and ISO 27001 certifications — rare for an early-stage startup.
- **Open platform**: API and MCP server for custom integrations, allowing data to flow in and out freely.

## Strategic Focus
- Continue building the “world model of your company” by deepening automatic capture, causal reasoning, and agent capabilities.
- Scale go-to-market (hiring a Founding Account Executive, Community Lead) while expanding the platform’s AI and infrastructure teams.
- Maintain compliance and trust as the platform matures (mentioned roadmap includes “Foundations” and “Agents” on the product page).

## Why Work Here
- **Early-stage impact**: Join a team of 31 people (largely technical: 38% engineering/design) and help shape the foundational product. Recent hires come from Tome, Gong, Uber, and other high-growth companies.
- **Remote/hybrid friendly**: Team distributed across US (majority), Canada, and India. [linkedin.com/company/lightfld](https://www.linkedin.com/company/lightfld)
- **Engineering culture**: AI/ML deep tech focus — building agents, world models, and reasoning systems. Titles include Machine Learning Engineer, GenAI Platform Engineer, AI Product Engineer, and Infrastructure Lead.
- **Growth trajectory**: Headcount more than doubled in the last year, with active hiring across all departments. The company’s mission emphasizes “deep customer understanding,” appealing to builders who want to solve real business problems with AI.
- **Transparent product velocity**: Public changelog shows frequent releases (weekly), indicating a fast-moving, iterative engineering culture.

## Sources
1. [lightfield.app](https://lightfield.app/)
2. [lightfield.app/company](https://lightfield.app/company)
3. [jobs.ashbyhq.com/Lightfield](https://jobs.ashbyhq.com/Lightfield)
4. [linkedin.com/company/lightfld](https://www.linkedin.com/company/lightfld)
5. [lightfield.app/blog/why-we-built-lightfield](https://lightfield.app/blog/why-we-built-lightfield)

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- [Research Scientist (Staff+)](https://feeny.ai/job/research-scientist-staff-lightfield-san-francisco-tt20y8egr6qc) — San Francisco, CA
- [Applied Researcher (Staff+)](https://feeny.ai/job/applied-researcher-staff-lightfield-san-francisco-a1hhz3hsxbxw) — San Francisco, CA
- [Deployment Strategist](https://feeny.ai/job/deployment-strategist-lightfield-san-francisco-mkj21jgqb8bh) — San Francisco, CA
- [Growth & Delivery Lead](https://feeny.ai/job/growth-delivery-lead-lightfield-san-francisco-q9d3b7nr54j2) — San Francisco, CA
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