# Senior Backend Engineer at Phonely

- Company: Phonely
- What the company does: Phonely's AI phone agents answer every call, book appointments, and handle customer support 24/7. Trusted by 10,000+ businesses worldwide. Backed by Y Combinator.
- Company website: https://phonely.ai
- Type: Startups (AI role)
- Level: Senior
- Location: San Francisco, California
- Work setup: On-site
- Pay: $200K to $350K base salary per year (USD)
- Posted: 2026-04-09
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/phonely/c51f43fe-a913-4d1d-adc2-1d683cc813b6
- Page: https://www.1752.vc/careers/jobs/phonely-senior-backend-engineer/

## About the role

Build and maintain Python-based state systems that drive what the voice AI says and does across complex, real-time conversations. Integrate and orchestrate multiple LLM providers , including prompt design, tool/function calling, routing, and fallbacks.

## What they're looking for

- 5+ years writing python, experience writing async web apps using fast api, testing frameworks
- Understanding of LLMs, APIs, Cloud, CI/CD pipelines
- Comfortable with understanding technical specifications,
- Understanding of good architecture, security practices
- Strong technical and communication skills
- Experience with AWS & Kubernetes

Tags: Engineering