Software Engineer – Platform / InfrastructureLocation: San Francisco, CA (Hybrid) Company Stage of Funding: Series A/B ($30M+ raised) Office Type: Hybrid Salary: $160,000 – $225,000 Visa: No sponsorshipOur client is building next-generation cybersecurity infrastructure focused on human risk intelligence.Their AI-native platform identifies behavioral security risks and automatically deploys interventions that improve enterprise security posture at scale.Backed by leading venture investors and founded by proven operators from category-defining security companies, they are rapidly scaling a highly technical engineering organization.This is an opportunity to build the infrastructure backbone powering large-scale data ingestion, processing, and real-time decisioning systems.What You Will DoDesign and build scalable backend infrastructure systemsBuild and operate real-time and batch data processing systemsDevelop platform services supporting high-throughput data workflowsBuild compute, storage, orchestration, and platform toolingImprove system reliability, observability, and operational performanceCollaborate closely with data and ML teamsSupport production data ingestion and serving infrastructureOptimize systems for scalability and cloud efficiencyBuild internal abstractions and developer toolingDrive infrastructure consistency and engineering velocityContribute to secure, compliant infrastructure designHelp scale platform architecture as product adoption acceleratesIdeal Candidate Background4–8 years of backend/platform engineering experienceStrong distributed systems fundamentalsProduction infrastructure ownershipReal-time systems experienceData pipeline / ETL systems experienceCloud infrastructure expertise (AWS/GCP)Kafka / streaming systems exposureStrong systems design capabilityPlatform scalability experienceInfrastructure reliability mindsetStrong SignalsHigh-growth startup platform engineeringData infrastructure ownershipReal-time event-driven systemsBackend platform scaling experienceStrong observability / reliability practicesCross-functional collaboration with ML/data teamsCloud cost optimization experienceInternal tooling developmentSecure infrastructure designInfrastructure abstraction buildingFast-moving engineering environmentsHigh autonomyCompensation and BenefitsBase salary: $160,000 – $225,000Competitive equityHealth / dental / vision coverageFlexible PTOHigh ownershipTechnical autonomyFast-moving engineering cultureOpportunity to build foundational infrastructureWhy JoinThis role offers the opportunity to build critical platform systems at the foundation of an AI-native cybersecurity company.You'll work on the infrastructure powering real-time behavioral intelligence products while shaping how the company scales its backend systems for enterprise growth.For engineers who love distributed systems, data infrastructure, and building robust production platforms, this is an exceptional early-stage opportunity.