Backend Engineer jobs at Horizon3 AI

Open Backend Engineer roles

• Senior Backend Engineer, Integrations

  Remote · Palo Alto, US

  Posted 2026-09-29 · Apply on Ashby

• Senior Backend Engineer, Growth & MSSP

  Remote · Chicago, US

  Posted 2026-09-29 · Apply on Ashby

• Senior Backend Engineer, Autonomous Defense

  Remote · Chicago, US

  Posted 2026-09-14 · Apply on Ashby

• Senior Backend Engineer, Data & App Platform

  Remote · US

  Posted 2026-08-28 · Apply on Ashby

• Senior Backend Engineer, Precision Defense

  Remote · Chicago, US

  Posted 2026-08-27 · Apply on Ashby

Where Horizon3 AI is hiring Backend Engineer

• Remote · Chicago, US 4 open roles
• Remote · Palo Alto, US 1 open role
• Remote · US 1 open role

Prepare your Backend Engineer application

• Resume keywords: how to find and use them truthfully
• Job description keyword extractor
• Companies that use Ashby
• Backend Engineer salaries across employers
• Remote Backend Engineer pay
• Remote software engineer jobs

Free tools for Backend Engineer applications

• References page template for a resume
• Cover letter readability checker
• Questions to ask the interviewer generator
• Response to job rejection email template
• Personal brand statement generator

Guides

• How to apply for jobs on Ashby: a step-by-step guide
• Interview preparation: a step-by-step plan you can actually rehearse
• How to write a cover letter that gives a clear reason to interview you

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