Horizon3
Open positions
Federal Platform Engineer
We are looking for a Federal Platform Engineer to help lead the deployment and operation of our product infrastructure in multiple federal environments ranging from FedRAMP through Classified workloads Your goal will…
Senior Backend Engineer (Integrations)
You’ll be joining the Platform Integration Team (PIT Crew) — a high-impact group whose mandate is critical to the scalability and extensibility of the NodeZero platform. The PIT Crew’s mission is to transform…
Senior IT Systems Engineer
We are seeking a security-minded IT Systems Engineer with a genuine passion for networking — someone equally comfortable hardening identity and email infrastructure as they are managing routing and firewall policy This…
Federal Backend Engineer
The Federal - Senior Backend Engineer will be joining one of our world-class software engineering teams, and will be a key contributor to both user-facing product launches as well as platform enhancements and…
Staff Front End Software Engineer
We are looking for a Staff Software Engineer to join our Core Front-End team and help shape the future of the user experience across the Horizon3 NodeZero platform This is not a traditional feature team role. The Core…
Senior Marketing Operations & Analytics Manager
Get to Know Us Horizon3 is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find and fix and verify exploitable attack vectors before criminals exploit…
Senior / Staff Site Reliability Engineer
We are seeking a hands-on Senior OR Staff Site Reliability Engineer to own and evolve the reliability strategy, operating model, and engineering-wide standards supporting our platform This is a foundational role for an…
Staff Developer Experience Engineer (Developer Experience)
We are looking for a Senior OR Staff Developer Experience Engineer to help shape how Horizon3 engineers build, test, release, and operate software The Developer Experience team owns the foundations connecting local…
Principal Software Engineer (Autonomous Defense)
We are hiring a Principle Software Engineer to lead the technical work for NodeZero’s defensive agents: the systems that translate proven attack paths into continuous actionable remediation You’ll set direction…
Senior Backend Engineer (Autonomous Defense)
As a Senior Backend Engineer on the Defensive Agent team, you’ll build the platform that NodeZero’s defensive agents run on. Our AI researchers define what these agents should reason about, you build the systems that…
Senior/Staff Platform Engineer
We are looking for a Senior OR Staff Platform Engineer to join Horizon3’s Internal Platform Team (IPT) and shape the cloud and delivery foundations behind NodeZero You will lead complex, cross-team initiatives; define…
Applied AI Engineer (Autonomous Defense)
We’re looking for an AI Researcher to build the agents that turn our offensive knowledge into defensive action You’ll build agents that reason from a proven attack path to the specific control changes that break it -…
Senior Machine Learning Engineer (Autonomous Defense)
As a Senior Machine Learning Engineer on the Defensive Agent team, you’ll be the person who gets our defensive models into production and keeps them there Our AI researchers define how NodeZero’s agents should reason.…
Senior Technical Support Engineer (EMEA)
In this role, you will serve as a key technical resource for our enterprise customers, diagnosing and resolving complex issues related to cloud infrastructure, networking, and security You’ll collaborate with…
Senior Back-End Engineer (Data & App Platform)
The Pentest Data Platform team owns how NodeZero turns raw pentest telemetry into the findings, attack paths, reports, and insights our customers act on. As Horizon3 has grown in both customer count and customer size.…
Senior/Staff Data Engineer
We are seeking a Senior or Staff Data Engineer to design, build, and own the data platform underneath our business-critical pipelines Today the team supports account provisioning, product analytics, and the pipelines…
Senior Backend Engineer (Precision Defense)
As a Senior Backend Engineer on the Precision Defense team, you’ll help build the systems that move our customers from reactive security toward proactive, evidence-based defense The team operates across three closely…
Staff Software Engineer (Tripwires)
We are looking for a Staff Software Engineer to join our Detection & Deception (DnD) Team to help build Horizon3’s deception capabilities. The team works across product, design, and engineering to deliver features such…