Staff Software Engineer, Pentest Experience
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Job Description
Staff backend engineer leading services, APIs, and data models for Horizon3’s NodeZero autonomous pentesting platform. Driving cross-team architecture and customer-focused assessment experiences.
Responsibilities:
- Own the technical direction for Assessment Experience backend systems from concept through long-term evolution
- Design and build scalable backend services, APIs, and asynchronous or event-driven workflows for configuring assessments and consuming results
- Lead architectural decisions balancing velocity, reliability, data correctness, maintainability, extensibility, and operability
- Translate ambiguous product and customer goals into technical strategy, architecture, and execution plans
- Partner across teams owning attack content, integrations, and asset matching to define interfaces and remove systemic blockers
- Write production code and establish standards for design, code quality, testing, observability, and safe feature-flagged rollouts
- Identify risks, dependencies, and tradeoffs; sequence work across concurrent initiatives; evaluate emerging technologies including AI-driven approaches
- Raise technical standards through design reviews, code reviews, architecture proposals, and technical writing
- Mentor P3 and P4 engineers through feedback, coaching, and technical frameworks
- Communicate complex technical concepts to technical and non-technical stakeholders
- Support hiring by attracting, interviewing, and calibrating engineering talent
- Use customer feedback and production signals to improve how customers identify risk and act on NodeZero results
- Write production code and provide hands-on technical leadership for Horizon3's NodeZero autonomous penetration-testing platform
Requirements:
- Bachelor's degree in Computer Science, Computer Engineering, or a related field, or equivalent practical experience
- 8+ years of professional software engineering experience, including sustained ownership of production backend systems
- Experience building backend services in Python, Go, Rust, or TypeScript
- Strong SQL skills and production experience with at least one relational database, including complex joins, CTEs, window functions, and deliberate schema design
- Experience building backend services on AWS, GCP, or Azure
- Familiarity with Docker and containerized applications
- Experience designing and operating APIs, services, and asynchronous or event-driven systems
- Experience with data modeling and persistence layers for product-grade backend systems
- Operational maturity in observability, testing, and reliability practices
- Record of debugging difficult, customer-visible production problems
- Technical design documents, architectural proposals, or engineering standards adopted by other teams
- Record of leading cross-team technical work and mentoring engineers
- Willingness to travel up to 10%
- Legally authorized to work in the United States
- Preferred: GraphQL, Neo4j, ETL and streaming data pipelines, Datadog, Prometheus, Grafana, feature flags, staged rollouts, and AI-assisted or conversational product experiences
- Experience in vulnerability management, exposure management, security SaaS, pentest products, or security findings workflows is advantageous
Benefits:
- Equity package in the form of stock options for all full-time roles
- Health, vision & dental insurance for you and your family
- Flexible vacation policy
- Generous parental leave
- Career development opportunities
- Inclusive and collaborative work culture
- Fully remote work model
- Team project kickoffs and annual company gatherings
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