Senior Backend Engineer, External

The role

You will contribute to backend services powering NodeZero's external pentesting capabilities. This includes architecture, development, deployment, and production operations for core APIs, data processing pipelines, and cloud infrastructure.

What you will do

• Design, build, and maintain features in the core Python API
• Design, build, and operate workflow orchestration for large-scale workloads
• Build orchestration that scales reliably across concurrent workflows
• Optimize or refactor complex SQL in production
• Build and operate high-throughput data processing and ETL pipelines
• Contribute to datalake architecture on AWS
• Deploy and manage services on Kubernetes
• Develop and extend GraphQL and graph-based APIs
• Own observability, uptime, and scalability of services
• Partner with frontend engineers, product managers, and designers

Required qualifications

• Bachelor's Degree in Computer Science, Computer Engineering or related field
• 7+ yrs professional software engineering experience using modern object-oriented or functional languages (Python, Java, Go, Scala, C++, TypeScript, etc)
• Experience building and running workflow orchestration or distributed task-processing systems in production
• Hands-on experience designing and building high-throughput data processing systems and ETL pipelines
• Experience building applications on cloud computing platforms such as AWS, Azure, GCP, using container technologies such as Docker and Kubernetes

Nice to have

• Deep Kubernetes experience, including managing deployments and clusters and troubleshooting production workloads
• Experience with durable-execution or workflow engines such as Temporal or Prefect
• Experience building GraphQL backends and working with graph databases
• A track record of owning observability, uptime, and scalability for production systems
• Systems engineering and architecture experience with datalakes and the cloud services around them
• Experience building platform capabilities or internal tooling that other engineering teams rely on
• Experience in cybersecurity or with attack surface and vulnerability data

Benefits

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

Before you apply

• Only US persons can interview for this role
• Employee must be eligible for and successfully secure a US Federal Security Clearance

About the company

Horizon3 is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find and fix and verify exploitable attack vectors. The team is a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners.