# Senior Engineer, Back-End (Security Controls) at Horizon3.ai

- Company: Horizon3.ai
- What the company does: Horizon3 uses real-world attacks to safely show what attackers can actually do in your environment—so you can fix and prove what matters. Backed by NEA.
- Company website: https://horizon3.ai/
- Type: Startups (AI role)
- Level: Senior
- Location: US, Remote
- Work setup: Remote
- Pay: $200K to $270K base salary per year (USD)
- Posted: 2026-08-27
- Apply by: 2026-10-11
- Apply: https://jobs.ashbyhq.com/horizon3ai/7305c82f-fddd-4e11-a539-34a401cc9cc5
- Page: https://www.1752.vc/careers/jobs/horizon3-ai-senior-engineer-back-end-security-controls/

## About the role

The Senior Backend Engineer will join our world-class software engineering team as a key contributor to both user-facing product launches and platform enhancements and stability. You will own our security controls integration platform, abstracting the complexity of the EDR ecosystem from the rest of our system.

## What they're looking for

- 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 applications on cloud computing platforms such as AWS, Azure, GCP, using container technologies such as Docker and Kubernetes
- Expert proficiency in SQL
- Experience with various database architectures including relational (PostgreSQL) and graph (Neo4j)
- Experience building GraphQL backends

Tags: Engineering