Staff Software Engineer – AI Voice Agent

Role Overview

• You'll work on live audio systems: buffering, streaming, latency optimization, and the integration points with speech providers.
• You'll build and improve the systems that make conversations feel natural: dynamic knowledge injection, action execution with branching logic, and the dialogue management that turns a phone call into something useful.
• You'll work on the action framework: configurable API calls, success/failure branching, auth management and the runtime execution engine.
• You'll work on how agents ingest, store, and retrieve knowledge at runtime.
• You'll work with our designers to translate cutting edge advanced AI concepts and features into smooth, reliable and easy to use product experiences.
• You'll help build evaluation frameworks for each model involved, post-call analytics, call quality metrics, and Datadog instrumentation.

Requirements

• You have experience building production backend systems ideally in Python or Typescript (all levels welcome, 5+ years for senior roles).
• You write async code naturally, understand how to design for performance and reliability, and have shipped systems that real users depend on.
• You understand what makes real-time systems different from request/response API’s. You can talk about the tradeoffs around buffering, streaming, connection management, and latency.
• You've worked with LLMs or AI/ML systems in production. You understand concepts like prompt engineering, context management, function calling, and what it takes to make AI behavior reliable for customers.
• You know evaluation matters and you've built or used tooling around it.
• Event driven architectures, message queues, caching layers, and async task processing feel natural to you.
• You've debugged distributed failures and designed systems that handle partial failures gracefully.
• Testing strategy, observability, API design, and code review are things you do thoughtfully. You write code that other engineers can understand and extend.
• You communicate clearly. You can explain a complex technical problem to someone without your context, write a design doc that prevents misalignment, and ask good questions before diving into implementation.
• You are familiar with AI coding tools and already embedded them into your day to day engineering processes.

Tech Stack

• Python
• TypeScript

Benefits

• Medical, dental, and vision insurance is 100% covered
• 401k plan with company matching!
• Unlimited PTO — take the time you need to come to work feeling great!
• Wellness, commuter, and childcare reimbursements
• Generous parental leave policy