Backend engineer at protocolnine.com
About the role
Role Summary We’re building a new category of enterprise security infrastructure for modern, AI-driven systems. As a backend engineer, you’ll work on the core systems that power policy management, threat evaluation, observability, and integrations with external systems—enabling enterprises to evaluate threats, enforce policies, and gain visibility into agentic and API-driven workloads. You’ll also play a key role in shaping how AI and agentic systems are built, orchestrated, and secured in prod…
Interview process at protocolnine.com
General interview process (this company's specific loop isn't published - reach out if you have insider info).
- Recruiter phone screen - typically 20-40 min
- Technical screen - 1 coding problem or take-home; format varies by company
- Onsite / virtual loop - typically 4-6 rounds over 2-3 weeks; exact split of coding, systems design, and behavioral varies by role and location
Platforms used: unknown — MiPrep tested compatible with major platforms
How to prepare
MiPrep helps you rehearse the specific cadence and question types protocolnine.com interviewers score on. Upload your resume and this job description; MiPrep generates a rehearsed answer set in your voice from your own projects.