Senior Backend Engineer
About The Position
We are building a future where every business answers their phone with voice AI, and we are ensuring the experience of building that AI agent is seamless. We are growing rapidly and seeking a highly technical, driven, and collaborative individual to join our engineering team. This role is crucial to our company's success and requires someone who is willing to roll up their sleeves, tackle challenges, and thrive in a dynamic, high-pressure environment. You will be writing a significant amount of code and working directly with our engineers, customer support team, and product team. This is an in-office position, 5 days a week in San Francisco.
Requirements
- 5+ years writing Python
- Experience writing async web apps using FastAPI
- Experience with testing frameworks
- Understanding of LLMs, APIs, Cloud, CI/CD pipelines
- Comfortable with understanding technical specifications
- Understanding of good architecture and security practices
- Strong technical and communication skills
- Experience with AWS & Kubernetes
Responsibilities
- Build and maintain Python-based state systems that drive voice AI conversations.
- Integrate and orchestrate multiple LLM providers, including prompt design, tool/function calling, routing, and fallbacks.
- Write clean, maintainable, high-performance Python code leveraging asyncio, OOP, and best practices.
- Write automated tests and validation suites to ensure correctness, resilience, and safe iteration of agent logic and state transitions.
- Monitor production systems, debug agent behavior, and continuously improve reliability and conversation quality.
- Implement comprehensive metrics, logging, and alerting to validate correctness, detect failures early, and maintain extremely high availability.
- Design database schemas, optimize queries, and operate both SQL and NoSQL databases in production.
- Build and operate authentication and authorization mechanisms with strong security guarantees.
- Design and build microservices-based architectures.
Benefits
- Company pays for food
- Team meals
- Team runs, hikes, and surf trips
- Company-sponsored Airbnb retreats in various locations four times a year
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
