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Software Engineer, Voice Quality

Sierra

Salary not specified
Nov 14, 2025
San Francisco, CA, US
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Sierra is creating a platform to help businesses build better, more human customer experiences with AI, focusing on challenges in speech-to-text, speech synthesis, and real-time audio processing for AI agents.

Requirements

  • 4+ years hands-on experience building production products and systems.
  • Experience and comfort to build and ship full-stack solutions.
  • Experience building AI-powered products.
  • Experience with Go and Typescript.
  • Experience building developer tooling, programming languages, or databases.

Responsibilities

  • Enable accurate speech-to-text and automatic speech recognition across 100s of languages.
  • Build the infrastructure needed for low latency speech-to-text and automatic speech recognition.
  • Generate speech that is precise and matches each customer’s desired brand and style.
  • Adapt agentic loop to accept real-time streams of audio, instead of just text.
  • Ensure reliable handling of interruptions, disconnects, and transfers in real-time audio streams.
  • Build and ship full-stack solutions.

Other

  • A passion for being on the frontier of AI products.
  • Motivation and high-agency to drive outcomes.
  • Alignment to company values: Trust, Customer Obsession, Craftsmanship, Intensity, and Family.
  • Degree in Computer Science or related field, or equivalent professional experience.
  • A sharp eye for design.
  • Leadership experience on technical projects or teams.