# Senior Backend Engineer, AI Evaluations at Ellipsis

- Company: Ellipsis
- What the company does: Cloud platform for coding agents. Backed by Khosla.
- Company website: http://www.ellipsishealth.com/
- Type: Startups (AI role)
- Level: Senior
- Location: San Francisco - Hybrid
- Work setup: Remote
- Pay: $175K to $250K base salary per year (USD)
- Posted: 2026-05-13
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/ellipsis-health/60fb0284-8ba7-48a6-b66b-9bf4beb7b133
- Page: https://www.1752.vc/careers/jobs/ellipsis-senior-backend-engineer-ai-evaluations/

## About the role

We’re seeking a strong Senior Backend Engineer to join our AI Evaluation team, focused on building the infrastructure and internal tooling that enable reliable, repeatable evaluation of AI systems in production. In this role, you’ll develop the scaffolding around our evaluations platform - API/data integrations, test configuration management, and reporting tools that make evaluations easy to run, extend, and operate at scale.

## What they're looking for

- 5+ years of professional software engineering experience, with a strong focus on building backend systems, platforms, or developer tooling
- Proven experience designing and maintaining production-grade infrastructure with code, including APIs, services, and data pipelines
- Strong proficiency in at least one general-purpose programming language (e.g., Python, Typescript/Javascript, Java, or similar)
- Experience using test automation frameworks, evaluation pipelines, or CI/CD-integrated testing systems
- Familiarity with observability and debugging tools (logging, metrics, tracing) and building internal tools that improve developer and QA workflows
- Strong debugging skills and a methodical approach to diagnosing production and evaluation issues

Tags: Engineering