Software Engineer - Platform/Infrastructure

Platform / Infrastructure EngineerAI-driven threats and human error are today's biggest enterprise security risks. Cybercriminals don't hack systems—they exploit people. Human errors drive 70% of security breaches, making human behavior the primary and growing attack surface. At Fable, we believe that the right tools can convert people from targets to another layer of defense.Fable is the human risk platform that directly shapes employee behavior. Designed for simplicity and enterprise scale, our agentic platform synthesizes complex employee data, pinpoints risky behaviors, and deploys highly relevant interventions to people automatically, in real time, right where they work.Backed by Redpoint Ventures and Greylock Partners and founded by early Abnormal Security team members, Fable is solving cybersecurity's biggest challenge in a multi-billion-dollar market. Our team includes alumni from Meta, Twitter, Flexport, and top-tier universities like Waterloo, Columbia, Berkeley, Purdue, CMU, Stanford, UCLA, and USC. We are experiencing explosive growth, making this a career-defining opportunity to join and shape the future of security.Why Join UsBuild and scale the foundational data infrastructure powering a category-defining productWork closely with engineering, data science, and product teams to operationalize data at scaleJoin a small, high-caliber team where you'll have outsized ownership and impactAt an early-stage company, every engineer directly shapes how the product works and evolves. You'll help define not just the system—but the way the company thinks about data.Your RoleAs a Platform / Infrastructure Engineer, you will build and scale the core systems that power Fable's product and data workflows.You'll work across backend systems from real-time services to data pipeline. You'll ensure reliability, scalability, and performance across the stack. You'll collaborate closely with data and ML teams and contribute to the systems that ingest, process, and serve data.This is a highly cross-functional role where you'll partner with engineering, data, and product teams to build robust, production-grade systems that scale with the company.ResponsibilitiesDesign, build, and operate scalable backend and infrastructure systemsDevelop and maintain services that support real-time and batch data processingContribute to core platform components (compute, storage, orchestration, and tooling)Improve system reliability, observability, and performance across services and workflowsCollaborate with data and ML teams to support data ingestion, processing, and production use casesOptimize systems for scalability, cost, and efficiency in cloud environmentsBuild internal tools and abstractions that improve developer velocity and system consistencyContribute to secure and compliant infrastructure designYour Skillset: Must-Have3–7+ years of experience in backend, infrastructure, or platform engineeringExperience building and operating distributed systems at scaleFamiliarity with real-time or batch data processing systems (e.g., Kafka, Spark, or similar technologies)Strong understanding of system design, scalability, and reliability principlesExperience with cloud platforms (AWS/GCP) and distributed storage systemsAbility to work across the stack and collaborate with cross-functional teamsComfort operating in a fast-moving startup environment with high ownershipNice-to-HaveExperience with data infrastructure or data platformsFamiliarity with stream processing or messaging systemsExposure to ML infrastructure or data-driven product featuresExperience with workflow orchestration tools (Airflow, etc.)Background in security or high-sensitivity data environmentsHow We WorkWe value impact over process —you'll ship quickly and iterateEngineers have high ownership and autonomyWe operate with tight feedback loops across product and engineeringWe prioritize technical rigor, simplicity, and long-term scalabilityCompensation & BenefitsCompetitive salary + equityHealth, dental, vision coverageFlexible PTOOpportunity to join at an early stage and shape the company's foundationWhy This Role MattersData is core to the product. You'll be responsible for building the systems that enable:Reliable, production-grade data for customers and internal teamsReal-time decision-makingScalable analytics and experimentationYour work will directly impact how the company builds, ships, and scales.The estimated salary range for this position is estimated to be $160K - $225K / 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.