Senior Backend Engineer, Admin Experience

The role

You will build services and APIs for the NodeZero platform to manage user access, account hierarchies, and administration workflows. You will own features from technical design through rollout and production support.

What you will do

• Design, build, and operate backend services and APIs for user access, account hierarchies, settings, and administration workflows.
• Own features from design and implementation through tests, safe rollout, observability, and production support.
• Apply secure authorization and data-modeling practices to customer and parent-child account relationships.
• Investigate production issues and improve service reliability, performance, and observability.
• Write and review maintainable code, automated tests, design documentation, runbooks, and support guidance.
• Partner with Product, frontend engineers, and adjacent platform teams to deliver cohesive customer workflows.
• Mentor teammates through design discussions, code reviews, and collaborative problem solving.

Required qualifications

• Bachelor’s degree in Computer Science, Computer Engineering, or a related field, or equivalent practical experience.
• 7+ years of professional software engineering experience building production software with a modern programming language.
• Experience designing and operating backend services and APIs, and taking complex work from design through production.
• Strong SQL and relational database experience, including data modeling and debugging or improving queries.
• Experience building services on a cloud platform such as AWS, GCP, or Azure and working with Docker or other containerized applications.
• Demonstrated focus on testing, production reliability, observability, and clear technical communication.
• Ability to own complex work end to end, manage competing priorities, and communicate risks and tradeoffs early.
• A customer- and security-conscious approach to designing administration and access workflows.
• Strong analytical and problem-solving skills, attention to detail, and commitment to high-quality production software.
• Clear technical writing and effective collaboration with Product and engineering partners
• Interest in sharing knowledge and helping other engineers grow.

Nice to have

• Experience with multi-tenant SaaS, RBAC, SSO, audit logs, delegated administration, or account hierarchy models.
• Experience with Python or Go, PostgreSQL, GraphQL, Kubernetes, and CI/CD.
• Familiarity with feature flags, metrics, tracing, alerting, and tools such as Datadog, Prometheus, or OpenTelemetry.
• Experience in cybersecurity or building customer-facing platform capabilities used by multiple

Benefits

• health, vision & dental insurance for you and your family
• flexible vacation policy
• generous parental leave
• equity package in the form of stock options

About the company

Horizon3 is a remote cybersecurity company dedicated to enabling organizations to proactively find, fix and verify exploitable attack vectors. Their flagship product, the NodeZero platform, delivers autonomous pentests and assessment operations.