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 applications at scale

• API & Integration Design: Strong background in RESTful APIs, webhooks, and complex third-party integrations

• Data Architecture: Experience with real-time data processing, streaming architectures, and data pipeline design

Engineering Leadership

• Track record of leading technical architecture for enterprise software products

• Experience scaling systems from startup to enterprise-grade requirements

• Strong background in designing secure, compliant systems handling sensitive data

• Experience with infrastructure-as-code and CI/CD practices

Business Acumen

• Understanding of cybersecurity markets and enterprise software requirements

• Experience building products that integrate with existing enterprise toolchains

• Ability to balance technical excellence with business requirements and delivery timelines

Preferred Qualifications

Security Domain Knowledge

• Previous experience in cybersecurity, security tooling, or compliance software

• Understanding of enterprise security operations and incident response

• Familiarity with security frameworks and compliance requirements

Technical Skills

• Experience with security tool APIs and integration patterns

• Background in automation platforms, workflow engines, or security orchestration

• Knowledge of security tools and enterprise management systems

• Experience with observability and monitoring in distributed systems

Industry Experience

• Background at high-growth B2B SaaS companies

• Experience building products for technical practitioners

• Previous work on products with complex integration requirements

Perks of Horizon3.ai

• Inclusive Team: We value diversity and promote an inclusive culture where everyone can thrive.

• Growth Opportunities: Be part of a dynamic and growing team with numerous career development opportunities.

• Innovative Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking.

• Remote Work: We are a 100% remote company. Enjoy the convenience and work-life balance that comes with remote work.

• Competitive Compensation: We offer competitive salary and benefits which includes health, vision & dental care for you and your family, a flexible vacation policy, and generous parental leave.

Compensation and Values

At Horizon3, we believe that our people are our greatest asset, and our compensation philosophy reflects this core value. We are committed to fostering an environment where all employees feel valued, respected, and rewarded for their contributions. Our compensation structure is designed to be fair, competitive, and transparent, ensuring that every team member is recognized and compensated equitably across roles, levels, and locations.

• Base salary range: $207,000 - 295,000 annually. The exact salary will be determined based on the selected candidate’s location, qualifications, experience, and relevant skills.

• Additional compensation: This role may also be eligible for an equity package (in the form of stock options). If any other compensation benefits apply, they will be discussed during the interview process.

You Belong Here

Horizon3 is not just an equal opportunity employer - we are a community that values diversity, equity, and inclusion as fundamental principles of our culture and success. We are dedicated to fostering a workplace where everyone feels welcome and respected, regardless of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, or any other legally protected status by law.

Our commitment to diversity and inclusion means we strive to attract, develop, and retain a workforce that reflects the varied communities we serve. We believe that diverse perspectives drive innovation and strengthen our ability to create cutting-edge cybersecurity solutions. At Horizon3, every team member is valued and supported in an environment that encourages personal and professional growth.

We welcome candidates from all backgrounds and experiences, and we encourage all qualified individuals to apply. Come be a part of Horizon3, where your unique contributions are recognized, and your potential is limitless.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.