Horizon3.ai

Security Engineer

• Lead full-scope penetration testing and red team engagements from scoping through final reporting.
• Perform in-depth testing of internal networks, web applications, APIs, cloud environments, and external attack surfaces.
• Identify and safely demonstrate business-logic flaws, edge cases, and high-impact attack chains that automated tools often miss.
• Review and validate findings from automated platforms, reproducing issues manually where needed.
• Deliver high-quality, client-ready reports with clear risk ratings, business impact, and practical remediation guidance.
• Collaborate with sales, customer success, and engineering teams to translate findings into product improvements.
• Mentor junior consultants and contribute to methodology, tooling, and process enhancements.
• Support compliance-driven assessments while maintaining an offensive security mindset.

Senior Offensive Security Consultant

• Combine deep security domain expertise with hands-on full-stack development to design, prototype, and ship new security capabilities within NodeZero
• Partner with product managers and designers to identify high-impact opportunities
• Collaborate with product engineers to quickly turn ideas into MVPs and production features
• Focus on honeytoken and honeypot creation, deployment, and detection logic for Tripwires and adjacent products like Rapid Response

Staff Defensive Security Software Engineer

Backend Engineer

• Develop core product features in ETL (Extract, Transform, Load) and GraphQL to support data processing and retrieval.
• Design and implement backend APIs in GraphQL to facilitate data interactions between different components of the product.
• Build and maintain ETL pipelines for efficient data processing and analytics.
• Collaborate with frontend team members to present data in a clear and user-friendly format, enhancing the product's user experience.

Senior Backend Engineer, Security Controls

Compliance

• Manage inbound customer security requests
• Lead audit preparation activities
• Drive continuous improvements in our compliance program
• Serve as the internal lead for SOC 2 Type II compliance efforts, including control mapping, evidence collection, and audit coordination.
• Oversee the organization’s privacy program to ensure compliance with GDPR, CCPA/CPRA, EU AI Act, and emerging U.S. state data privacy laws.
• Own and manage the third-party risk management lifecycle, including onboarding reviews, periodic reassessments, and contract/privacy reviews.
• Serve as the primary point of contact for responding to customer security questionnaires, RFPs, and due diligence requests.

Senior Compliance Analyst

Full-stack Engineer

• Collaborate with the Attack, Data, Commercial and Federal engineering team in all phases of the software development lifecycle.
• Work to improve the scalability of the NodeZero platform by empowering the Attack team to build new features and add new offensive attack content into the product.
• Work with other attack engineers and N-Day researchers to understand the technical aspects of reverse engineered exploits and how they act and interact within the product in production.
• Maintain and extend the platform architecture, design, and data model to support new product features.
• Identify, take ownership of and resolve bugs in the product.
• Maintain a high-degree of software quality though code review, testing, and production monitoring.
• Adhere to and improve technical and developmental processes of the Federal Attack Team

Federal Software Engineer, Attack

Cloud Engineer

• Cloud Security Engineering: Design and implement robust security controls across AWS environments, including AWS IAM, SCPs, VPC security, S3 bucket policies, and key management.
• Infrastructure as Code (IaC): Utilize Terraform to deploy and manage security configurations, ensuring "Security as Code" is integrated into all cloud deployments.
• DevSecOps Integration: Implement and maintain GitLab CI/CD pipelines for automated security testing and scanning of AWS resources.
• Posture Management & Monitoring: Continuously monitor and improve cloud security posture by managing and tuning services such as GuardDuty, Security Hub, AWS WAF, and CloudTrail.
• Identity & Access Management: Define and enforce IAM best practices, including least privilege, federated identity, RBAC, and automated remediation of deficiencies.
• Threat Modeling & Assessment: Conduct architecture reviews and risk assessments for new cloud features to identify and mitigate vulnerabilities before deployment.
• Incident Response & Analysis: Investigate suspected attacks and lead security incident management, providing post-mortem analysis and developing long-term preventive measures.
• Compliance & Standards: Develop and maintain security policies and procedures to ensure compliance with FedRAMP and DoD IL-4/5.
• Reporting & Metrics: Develop creative reporting mechanisms and metrics to communicate cloud risk and security themes to business owners and leadership.

Senior Cloud Security Engineer

Platform Engineer

• Implement highly scalable, secure, resilient cloud-native application platforms that host core company applications, toolings, and other services vital to enabling our product to perform in all AWS regions where we are deployed.
• Identify, design, and deploy improvements in development and deployment processes so engineers can begin deploying anytime with confidence.
• Design and implement tooling for the internal platform to collect telemetry data used to gauge its effectiveness in supporting H3's engineers.
• Help create an effective documentation culture within the Engineering Organization (Confluence, Documentation as code).
• Participate in effective project management and work allocation (Jira, Agile Concepts).
• Create Terraform modules and Crossplane compositions that are easily consumed by all of engineering.
• Be a positive example of automation for infrastructure-as-code, platform operations, and overall CI/CD methodologies.
• Evaluate new technologies and patterns for automation, application hosting, and improving infrastructure provisioning. Recommend and define the work needed.

Federal Platform Engineer

Federal Back-End Engineer

Support Engineer

• Provide advanced technical support to enterprise customers via phone, email, chat, and remote sessions
• Diagnose and resolve customer-reported problems, performing root cause analysis to prevent recurrence and ensure high availability of services
• Collaborate with engineering, product, and sales teams to escalate and resolve intricate technical challenges
• Assist in the deployment and optimization of customer environments
• Monitor and respond to support tickets in a timely manner, maintaining SLAs
• Mentor junior team members and contribute to internal training resources
• Stay abreast of emerging technologies and industry trends to enhance support capabilities and customer satisfaction

Senior Federal Technical Support Engineer

Account Executive

• Grow the Commercial business in your assigned markets through strong customer engagement, partner collaboration, and good market execution
• Create new logo momentum and build pipeline in a way that fits the local market
• Build and manage opportunities with good judgement, clear ownership, and strong follow-through
• Work closely with partners, distributors, MSSPs, Enterprise sellers, Partner Managers, and Sales Engineers to help the market work well
• Contribute to partner and territory plans and help turn those plans into action
• Work across Marketing, Channel, Sales Engineering, Sales Ops, Deal Desk, and leadership to move business forward
• Bring useful market feedback back into the business
• Represent Horizon3 well with customers and partners
• Keep building your capability, product knowledge, and commercial effectiveness over time

Senior Commercial Account Executive, DACH

Sales

• Lead and develop a team of Commercial sellers across multiple countries, with clear expectations around market execution, deal progression, and team contribution.
• Own the full Commercial motion in your region across partners, distributors, enablement, deal strategy, and market execution.
• Shape regional strategy and turn it into clear market plans, investment choices, and growth actions.
• Drive growth across priority markets by aligning partner activity, local market plans, and cross-functional execution.
• Help define how the region should scale over time, including hiring, market expansion, and where to place additional investment as the business grows.
• Build strong relationships with senior leaders across partner organizations, the distributor, the channel team, and the MSSP team in each territory, and shape business plans with partners.
• Build a repeatable motion that helps partners, distributors, and the wider team create market reach, demand, and Commercial momentum.
• Partner closely with Partner Marketing, Field Marketing, Sales Engineers, Engineering, Product, Sales Ops, Deal Desk, Channel, and distribution to help the region execute well.
• Own team productivity and enablement, including fast ramp, readiness, ongoing development, and helping people become successful as quickly as possible.
• Act as a trusted advisor to sales leadership by bringing clear market insight, practical recommendations, and feedback from the field.
• Travel extensively across the region to build presence in the markets, strengthen local relationships, and support execution where it matters most.

Senior Manager, Commercial Sales – DACH, Eastern Europe

Engineering Manager

• Lead and grow a team of backend and platform engineers migrating post-op processing from a batch system to a real-time, event-driven architecture.
• Partner with Product, Attack Engineering, and adjacent Platform teams to sequence the rework so customer value ships continuously rather than as one big-bang cutover.
• Work with senior engineers on the team to shape the technical direction: event streaming, stream processing, storage, schema evolution, and replayable processing.
• Invest in operational excellence — SLOs, observability, on-call, and incident response — as this system becomes central to every pentest Horizon3 runs.
• Help translate existing batch-era logic (finding enrichment, attack path analysis, reporting) into streaming-friendly designs without regressing fidelity.
• Recruit, mentor, and retain engineers who care about both distributed systems craft and the security domain.
• Establish healthy team practices: design reviews, technical writing, clear API contracts with neighboring teams, and durable decision records.

Senior Engineering Manager, Data Processing Platform

Senior Commercial Account Executive

Solutions Engineer

• Own the end-to-end technical vision for the Integration team and its supporting services, from initial concept through implementation, iteration, and long-term evolution.
• Partner with cross functional stakeholders to translate ambiguous product and business goals into concrete technical strategy, architecture, and execution plans for the Integration team.
• Contribute production code, setting the standard for design quality, code quality, and operational rigor.
• Lead architectural decisions for scalable backend systems that balance velocity, reliability, maintainability, extensibility, and operability.
• Drive execution across multiple concurrent projects and initiatives, identifying risks, dependencies, and tradeoffs early and helping the team sequence work effectively.
• Partner closely with Product, Engineering leadership, Design, and adjacent engineering teams to deliver cross-functional initiatives and ensure technical decisions reflect both business context and customer needs.
• Communicate complex technical concepts clearly to both technical and non-technical audiences, including leadership stakeholders.
• Set and continually raise the technical bar through architecture reviews, code reviews, technical writing, and strong engineering judgment under ambiguity.
• Mentor and develop engineers on the team by providing thoughtful feedback, technical coaching, and frameworks that help others do the best work of their careers.

Principal Engineer, Tech Lead – Integrations & APIs

DevOps Engineer

• Build a SRE team, from scratch. Hire experienced site reliability staff and build a team of 4-6 in year one.
• Professionalize incident management. Define and document incident processes and practices for your SRE team and for the application feature teams.
• Drive incident professionalism and reliability culture across the engineering organization through training and process adoption.
• Use design reviews, code reviews, and blameless retrospectives to drive a culture of quality and excellence in engineering.
• Balance incident response while also executing on a roadmap of observability and reliability engineering initiatives.
• Hire and directly manage site reliability engineers.
• Responsible for recruiting, onboarding, mentoring, coaching, and developing your team.
• Recognizing and retaining high performers.
• Leading horizontally with peer management & senior leaders.