---
title: 'Backend Engineer at Fable Security'
canonical: 'https://feeny.ai/job/backend-engineer-fable-security-san-francisco-7dwm0dmkqsz0'
type: 'job'
last_seen: '2026-09-11'
---

# Backend Engineer at Fable Security

- **Company:** Fable Security
- **Location:** San Francisco, CA
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-06-23
- **Last confirmed live:** 2026-09-11
- **Apply:** https://jobs.ashbyhq.com/fable/5b0c2fb9-6a7a-47f3-9836-1ad1949c3dd7

## Job description

## About Fable

AI-driven threats and human error are today’s biggest enterprise security risks. Cybercriminals don’t hack systems—they exploit people. Human errors drive 90% of security breaches, making human behavior the primary and growing attack surface. ([ex 1](https://www.cnn.com/2024/08/12/politics/trump-campaign-hack-personal-email-account-fbi/index.html),[ex 2](https://blog.knowbe4.com/how-a-north-korean-fake-it-worker-tried-to-infiltrate-us),[ex 3](https://www.forbes.com/sites/mollybohannon/2024/02/23/change-healthcare-cyberattack-disrupts-services-nationwide-heres-what-to-know/)) Fable is a security platform that mitigates human risks to the business. We built the first AI-native Human Behavior Platform to eliminate human risk wherever employees work. By leveraging GenAI and behavioral systems, we automatically detect at-risk employees, deliver personalized interventions at critical moments, and remove tangible risks to the business - at scale. This is a multi-billion-dollar market, and every company—from SMB to Fortune 500 enterprises—is racing to combat this problem. Backed by Greylock Partners and founded by early Abnormal Security team members, Fable has assembled a world-class team to solve this problem. Our team includes alumni from Meta, Twitter, Flexport, and top-tier universities like Waterloo, Columbia, Berkeley, Purdue, CMU, Stanford, and USC. We are experiencing explosive growth, making this an exciting time to join and shape the future of security.

## Your Role

You will work on the team that owns our data platform, including real-time API integrations, Kafka-based streaming systems, Spark and Airflow data pipelines, and the data services that power our application layer. You take pride in building reliable, maintainable, and scalable infrastructure that turns complex data flows into high-quality services for the product. You can translate product and customer requirements into durable platform designs, make thoughtful technical tradeoffs, and build systems that anticipate our needs as we evolve. Fable is founded by the early team from Abnormal Security ($5B valuation) and backed by Greylock, the investors behind Palo Alto Networks, Okta, Figma, and others. Our team has built many of the iconic products at Meta, Twitter, Flexport, and more. Our team has alumni from Waterloo, Columbia, Berkeley, Purdue, CMU, Stanford, and USC.

## Your skillset

- 3+ years developing backend software
- Designed, implemented, and owned production-facing services
- Experience with one of:
- Experience building and integrating with external APIs a plus
- Relational DB backends (Django or similar)
- Experience building ETL and data pipelines a plus
- Experience with building distributed systems and backends
- Experience with AWS, terraform, EKS, and cloud systems
- Strong desire to be part of an early team and create foundational systems

## How We Work

- We work from our San Francisco office three days a week, fostering collaboration and deep focus.
- We emphasize mutual trust, high execution, and delivering differentiated product experiences.
- We are an AI-native company, and Fable engineers are excited to use AI-powered development practices to move faster, improve quality, and continuously evolve how they build software.
- We prioritize impact—every team member plays a key role in shaping our success.

The estimated salary range for this position is estimated to be $135,000 - $250,000/year. Total compensation for this position may also include Restricted Stock units, sign-on bonus and other potential future incentives. Further note that total compensation for this position will be determined by each individual’s relevant qualifications, work experience, skills, and other factors. Fable Security is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected veteran status or other characteristics protected by law.

## About Fable Security

## Company Overview
- **One-liner**: Fable Security provides an AI-powered human risk management platform that assesses employee behavior and delivers targeted interventions to reduce security incidents.
- **Entity Type**: Private (Seed, Series A, and Venture rounds; total funding of $62M as per LinkedIn data)
- **Headquarters**: San Francisco, California, United States
- **Founded**: 2024
- **Founders**: Nicole Jiang-Gibson (CEO) and Sanny Liao (Co-Founder & CPO)

## Core Business
- **Primary industry**: Cybersecurity / Human Risk Management
- **Target customers**: Enterprise B2B (security teams, CISOs)
- **Mission or purpose statement**: “Eliminate the human attack surface” by blending engineering, behavioral science, and AI to make employees the strongest line of defense.

## Products & Services
- **Agentic Human Risk Platform**: An end-to-end suite that synthesizes employee data (role, access, behavior, threat exposure) to identify risky behaviors and automatically deploy interventions.
- **AI-Generated Video Briefings**: Crisp, bite-sized training videos tailored to real threats, replacing generic security awareness modules.
- **Phishing Simulations**: Tests employees on threats they are likely to encounter and measures resilience improvements.
- **Behavioral Interventions**: Real-time nudges, chats, and AI-generated content that directly shape security habits.
- **Human Risk Reporting**: Board-ready dashboards that highlight metrics like reporting rates (claimed 2.4× improvement) and risk reduction.
- **Secure AI Enablement**: Helps organizations build a culture of safe AI use without slowing adoption.

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Total funding of $62M (Seed $6.5M led by Greylock in 2024; Series A $24.5M led by Redpoint in 2025; Venture Round $31M from Greylock and Redpoint in 2025). *Note: Tracxn reports $86.3M total funding, which may represent a different aggregation or subsequent rounds.*
- **Notable Investors/Partners**: Greylock Partners, Redpoint Ventures
- **Growth Signals**: Headcount grew from ~1 to 58 employees (LinkedIn reports +6500% YoY); launched board-ready human risk reporting in October 2025; strong talent inflow from companies like Abnormal AI, Rippling, and Vanta.

## Competitive Advantages
- **AI + Behavioral Science Moat**: Combines adtech-style personalization (analyzing behavior, context, and risk) with security education to create habit-forming interventions.
- **Agentic Automation**: The platform autonomously detects risks, selects the right intervention, and deploys it in real time without manual effort.
- **End-to-End Suite**: Covers assessment, simulation, training, and reporting in a single platform, lowering integration complexity.
- **Founding Team Experience**: Co-founders led product and data science at Abnormal AI, a standout email security company.

## Strategic Focus
- Continue scaling the agentic platform to cover emerging threats (AI misuse, new attack vectors).
- Expand enterprise sales and board-level reporting to become the standard for human risk management.
- Deepen AI capabilities for automated intervention generation and real-time risk scoring.

## Why Work Here
- **Culture**: Values include extreme ownership, fast iteration, raising the bar, and building mutual trust. Described as “creative, aligned, and momentum-driven.”
- **Work Style**: Autonomy and deep focus are encouraged; the team moves fast and expects high output.
- **Engineering**: Building AI that treats humans as the solution, not the problem. Strong mentorship culture; interns report accelerated growth.
- **Location**: Headquarters in San Francisco, with a small presence in Canada. Remote/hybrid policy not explicitly stated, but roles appear to be in-office or hybrid given the SFO base.
- **Team**: Composed of industry veterans from companies like Abnormal AI, Palo Alto Networks, and other security startups; 24% of staff in technical roles.

## Sources
1. [fablesecurity.com](https://fablesecurity.com/)
2. [Fable Security About page](https://fablesecurity.com/about/)
3. [Fable Security Careers page](https://fablesecurity.com/careers/)
4. [LinkedIn Company Profile](https://www.linkedin.com/company/fable-security)
5. [Tracxn Profile](https://tracxn.com/d/companies/fablesecurity/__kDZ1w-yfTL1YAvfaIPjzkM-bmPAhgPP4uKxVFUA9Zy4)

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