Software Architect, Security Platform

Get to Know Us

Horizon3.ai 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 them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. NodeZero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises. It is used by ITOps/SecOps teams, consulting pentesters, and MSSPs and MSPs. 

We are a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools, false positives resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn it alls, committed to a culture of respect, collaboration, ownership, and results.

About the Role

We're seeking a Software Architect to lead the technical architecture and design of our next-generation autonomous security platform. You'll architect cloud-native systems that enable continuous, automated security operations, supporting our mission to make proactive offense-informs-defense capabilities accessible to organizations of all sizes.

What You'll Build As a Software Architect, you'll design and oversee the technical foundation for:

• AI-Driven Security Platform: Architect deterministic, production-safe automation systems that enhance security operations with intelligent, context-aware capabilities

• Enterprise Integration Layer: Design seamless integrations with identity providers, cloud platforms, security tools, and monitoring systems across the security ecosystem

• Automated Response Systems: Build scalable systems that translate security insights into actionable remediation and mitigation capabilities

• Real-Time Security Orchestration: Architect event-driven systems that coordinate threat detection, response, and validation workflows

• Security Data Architecture: Design robust systems for ingesting, processing, and acting on security telemetry from diverse sources at enterprise scale

Key Responsibilities

Technical Architecture & Design

• Lead architectural decisions for security platform modules spanning multiple security domains

• Design cloud-native, multi-tenant architecture supporting customers from SMB through enterprise

• Architect integration frameworks that embed seamlessly into existing customer security infrastructure

• Define technical standards and patterns for production-safe automation in security-critical environments

Platform Engineering

• Design scalable data pipelines that process security findings and orchestrate automated responses

• Architect event-driven systems that coordinate security testing and defensive capabilities

• Build robust API and integration layers supporting extensive security tool integrations

• Design fault-tolerant systems with comprehensive audit trails and rollback capabilities

Cross-Functional Collaboration

• Partner with product managers to translate platform vision into technical roadmaps

• Collaborate with security engineers to design systems that leverage security intelligence

• Work with domain specialists to architect security-specific capabilities

• Guide engineering teams on implementation of architectural decisions

Technical Leadership

• Mentor engineering teams on cloud-native design patterns and security automation best practices

• Establish engineering standards for security, scalability, and reliability

• Lead technical reviews and architecture decision records (ADRs)

• Drive technical strategy discussions with leadership team

Required Qualifications

Technical Expertise

• 8+ years of software engineering experience with 4+ years in senior architecture roles

• Expert-level AWS knowledge: Deep experience architecting applications in AWS environments

• Cloud-Native Architecture: Proven experience designing microservices, event-driven architectures, and serverless applica