Senior Infrastructure Engineer – AI-Driven Security Platform

Cogent Security; San Francisco (CA); On-site; USD 100,000 - 300,000; Full time

Benefits offered by this job

Startup founder experience

Envoy/Istio API gateway exposure

SRE-focused operations

Vault/SPIRE familiarity

Job summary

Cogent Security in San Francisco, CA is seeking a Senior+ Infrastructure Engineer to build a secure, scalable foundation for its AI-driven cybersecurity platform. You will join a small, high-ownership Core Platform team and work hands-on across data, security, and platform layers to empower agents and services.

The role demands 5–7 years of software infrastructure experience, strong AWS, and deep knowledge of Clickhouse and Spark, with a track record of leading large-scale projects in startup

Qualifications

• 5-7 years of software engineering experience with deep core infrastructure expertise
• Hands-on AWS experience
• Experience with Clickhouse Cloud at the serving layer
• Real depth in Spark and micro-batching
• A track record of driving large-scale projects across multiple stakeholders
• Experience building in an AI-forward capacity, with agentic coding fundamentals
• Startup or early-stage background (up to ~200 people), ideally blended with large-company experience

Responsibilities

• Build and optimize our data platform, with a focus on storage-level optimizations across Clickhouse and Postgres
• Make our product deployable on-prem to unlock onboarding for large customers - the last mile needed to land seven-figure accounts
• Harden our security systems
• Build an agent-first infra and platform layer, since agents will build our product and need a foundation they can rely on
• Drive large-scale infrastructure projects end-to-end across a variety of stakeholders

Skills

Core infra engineering

AWS

Clickhouse Cloud

Spark & micro-batching

AI-forward coding

Startup background

Tools

Clickhouse

Spark

Envoy

Job description

Cogent Security in San Francisco, CA is seeking a Senior+ Infrastructure Engineer to build a secure, scalable foundation for its AI-driven cybersecurity platform. You will join a small, high-ownership Core Platform team and work hands-on across data, security, and platform layers to empower agents and services.

The role demands 5–7 years of software infrastructure experience, strong AWS, and deep knowledge of Clickhouse and Spark, with a track record of leading large-scale projects in startup