Senior Software Engineer, Pentest Experience

The role

This Senior Software Engineer will build product experiences to help customers understand and act on risk. The role is approximately 80% backend focused and 20% frontend focused.

What you will do

• Building and shipping product capabilities spanning backend services, APIs, and modern web application stacks.
• Owning moderate-to-large projects end-to-end including scoping, design, implementation, and rollout.
• Implementing user-facing experiences aligned with product requirements and design.
• Partnering with Product, Design, and engineering teams on cross-functional initiatives.
• Identifying and resolving technical risks and blockers.
• Communicating technical topics, tradeoffs, and implementation choices to various audiences.
• Contributing to architectural and design discussions.
• Writing high-quality code, tests, and technical documentation.
• Providing code reviews.
• Supporting and mentoring less experienced engineers.

Required qualifications

• Bachelor’s degree in Computer Science, Computer Engineering, or a related field, or equivalent practical experience.
• 6+ years of professional software engineering experience.
• Experience building distributed backend services using at least one modern language, such as Python, Go, Rust, Java, TypeScript, or similar.
• Experience building backend services on a cloud platform (AWS, GCP, or Azure).
• Familiarity with Docker and containerized applications.
• Designing and operating APIs, services, and asynchronous or event-driven systems.
• Experience working with SQL base relational databases in production.
• Data modeling and persistence layers for product-grade backend systems.
• Observability, reliability, and operational best practices for production services.
• Frontend development using modern JavaScript/TypeScript in frameworks such as React, Angular, or similar.

Nice to have

• Experience with PostgreSQL and performance tuning for large datasets.
• Experience with graph databases such as Neo4j or interest in learning them.
• Experience building or consuming GraphQL backends.
• Experience with ETL pipelines and data processing tools.
• Experience building products or platforms in vulnerability management, exposure management, security telemetry, or related cybersecurity domains.
• Experience with scoring or recommendation algorithms and data-intensive products.
• Experience partnering closely with product managers to define and sequence an MVP.
• A track record of shaping technical direction more broadly across an organization.

Benefits

• Equity package in the form of stock options
• Health, vision & dental insurance for you and your family
• Flexible vacation policy
• Generous parental leave

About the company

Horizon3.ai is a remote cybersecurity company dedicated to enabling organizations to proactively find, fix and verify exploitable attack vectors. Their flagship product, NodeZero, delivers autonomous pentests across various environments.