Senior Software Engineer, Voice AI

Toast

12h•$125,000 - $254,000•Hybrid

About The Position

Toast is looking for a Senior Software Engineer to join the Voice AI Team. The mission of the Voice AI Team is to build and operate the voice platform that powers Toast and to ship novel applications on top of it that create real value across Toast's customer base. This is a greenfield space where the platform and its use cases are being defined together, and the work done here will be foundational to how Toast uses voice AI for years to come.

Requirements

5+ years of experience with object-oriented languages such as Java or Kotlin
Basic familiarity with frontend development on small scale projects
Bachelor’s degree in Computer Science, Software Engineering, Computer Engineering, or related field.
Experience shipping complex, mission-critical production services and owning them long-term
Track record of leading multi-person projects end-to-end, from design through rollout
Deep understanding of distributed systems, scalability, and production reliability
Experience building and reasoning about AI-powered systems, including nondeterminism, evaluation strategies, observability, and cost management
Experience developing AI-integrated products or features, with a practical understanding of how to ship and iterate on systems that incorporate LLMs or other AI capabilities
Strong cross-team communication and collaboration skills; able to influence direction without formal authority
Actively uses AI coding tools (e.g., Claude Code, Cursor) in day-to-day development

Nice To Haves

Experience with voice or conversational AI platforms is a plus, but not required

Responsibilities

Design, build, deploy, and maintain highly resilient and scalable backend services and applications supporting Toast's Voice AI platform
Lead complex, cross-cutting projects from design through production, owning outcomes and driving alignment across stakeholders
Shape the team's technical direction by making architectural decisions, defining patterns, and reducing complexity for the engineers around you
Build and evolve integrations with AI platforms and internal Toast systems, making pragmatic tradeoffs between speed, reliability, and long-term scalability
Design and implement observability, monitoring, and evaluation frameworks for AI-powered systems, using production data to understand and continuously improve system behavior
Advocate for engineering quality and best practices, raising the bar for the team and the broader organization
Mentor engineers at all levels through code reviews, design feedback, and technical guidance