Hadrian, an offensive cybersecurity startup, is hiring a Senior Backend Engineer to focus on building our offensive security platforms. We provide autonomous Threat Exposure Management from the hacker’s perspective, mapping an organization’s digital footprint, identifying risks, and prioritizing remediation to harden external attack surfaces. Located in Amsterdam, Netherlands, with a US headquarters in New York City, our team spans 25+ countries and is growing rapidly as we reshape security tooling. In this role, you will design and implement high-performance backend services and distributed systems that power our platform. You will work on autonomous systems capable of scanning, analyzing, and validating vulnerabilities at internet scale, moving beyond traditional scanning toward intelligent, agentic security operations. You should enjoy solving complex scalability challenges, building resilient event-driven architectures, and thinking like an attacker to anticipate edge cases before they occur. Responsibilities include developing and maintaining event-driven components that orchestrate core offensive security strategies, translating strategies into robust code, and deploying backend services that power our Agentic AI capabilities. You will write low-level, high-concurrency tools in Go and Python, design data pipelines with Apache Kafka and Kubernetes/Knative, and shape architectural decisions aligned with business goals. Requirements: 4+ years of experience building large-scale distributed systems; proficiency with Go, Python, C#, or similar technologies; PostgreSQL exper

Hadrian, an offensive cybersecurity startup, is hiring a Senior Backend Engineer to focus on building our offensive security platforms. We provide autonomous Threat Exposure Management from the hacker’s perspective, mapping an organization’s digital footprint, identifying risks, and prioritizing remediation to harden external attack surfaces. Located in Amsterdam, Netherlands, with a US headquarters in New York City, our team spans 25+ countries and is growing rapidly as we reshape security tooling. In this role, you will design and implement high-performance backend services and distributed systems that power our platform. You will work on autonomous systems capable of scanning, analyzing, and validating vulnerabilities at internet scale, moving beyond traditional scanning toward intelligent, agentic security operations. You should enjoy solving complex scalability challenges, building resilient event-driven architectures, and thinking like an attacker to anticipate edge cases before they occur. Responsibilities include developing and maintaining event-driven components that orchestrate core offensive security strategies, translating strategies into robust code, and deploying backend services that power our Agentic AI capabilities. You will write low-level, high-concurrency tools in Go and Python, design data pipelines with Apache Kafka and Kubernetes/Knative, and shape architectural decisions aligned with business goals. Requirements: 4+ years of experience building large-scale distributed systems; proficiency with Go, Python, C#, or similar technologies; PostgreSQL exper