Job Title: Backend Engineer

Company Name: Horizon3.ai

Job Url: https://jobs.ashbyhq.com/horizon3ai/c718aaab-6c41-4840-92e8-4a105b14886e?src=jobright&jr_id=69968d7b81476f6176ae6c70

Job Description: Role Overview
We’re looking for a Backend Engineer to join our Application Platform Team (APT). APT owns cross-cutting platform features for the Horizon3.ai engineering team, and has a mandate to build out a world-class application platform which is reliable, scalable, and performant. As a Backend Engineer, you’ll help build and improve the backend systems and APIs that power NodeZero’s production-scale pentesting and reporting. You’ll work alongside experienced engineers to implement features, improve stability and performance, and make it easier for other Horizon3 teams to build on the platform.

This description reflects a mid level role: you’ll have meaningful ownership of components and projects, with strong mentorship and support from senior engineers and managers.

What You’ll Do
Responsibilities:

Build and enhance backend services that power NodeZero, with a focus on:

ETL jobs and data pipelines used to process and analyze large graph and relational datasets.

GraphQL APIs used by customer-facing features and internal tools (such as authentication, our internal management portal, reporting flows, and more).

Improving the entrypoint to NodeZero, ensuring NodeZero runs seamlessly on various operating systems and provides improved observability into customer faced issues on installation process.

Implement and evolve backend APIs in GraphQL and Python to support:

Internal tools that enable managing customer accounts and operations at scale

Product features that rely on reliable, performant data access.

Help build foundational integrations platform

Be involved in a new initiative to help scale Horizon3’s ability to integrate a large number of new partners.

Help improve developer experience and API quality and operational readiness to ensure partner integrations are seamless.

Collaborate closely with other teams:

Partner with product, frontend, and other engineering squads to ship user-facing improvements.

Work with on-call and support engineers to debug production issues and improve reliability.

Contribute to platform performance and stability, including:

Improving ETL and post-ETL performance around attack vectors and large customer environments.

Enhancing observability and monitoring for runner queues, ETL jobs, and core APIs.

Attack vector and asset graph processing.

Platform features like runner queues, customer entitlements, and client migrations.