Real-Time Voice Platform Engineer - Hybrid (SF)

Sela AI; San Francisco (CA); Hybrid; USD 140,000 - 210,000; Full time

Benefits offered by this job

Health coverage

401(k) match

Unlimited PTO

Snacks & meals

Hybrid SF schedule

Job summary

Sela AI, the market-leading AI voice agent for mortgage lenders, is seeking a software engineer to own major components of its real-time voice platform, from architecture to production reliability.

You will improve voice performance, build observability tools, and integrate the voice stack with simulation systems, while training models for turn-taking and voicemail detection. Join a high-growth SF team building essential AI infrastructure.

Qualifications

• 3–6 years of software engineering experience.
• Experience building and operating low-latency, real-time, streaming, or distributed systems.
• Strong Python or Go skills and understanding of design patterns.
• Experience with instrumentation to diagnose latency, reliability, or quality issues.
• Experience using AI coding tools or agents to ship clean code.
• Experience in high-growth startups from Seed to Series B.

Responsibilities

• Own major components of Sela’s real-time voice platform, from architecture and implementation to reliability in production
• Improve voice performance across latency, audio quality, turn-taking, interruptions, transcription, and speech generation
• Build measurement, observability, and debugging tools to reproduce and diagnose voice issues
• Integrate our voice stack with simulation and evaluation systems, including end-to-end voice-to-voice evals
• Train, fine-tune, and deploy models for turn-taking, interruption handling, and voicemail detection
• Evaluate new voice models and providers, improving scalability, reliability, and cost efficiency of a platform handling hundreds of thousands of calls per day

Skills

Software engineering

Python

Go

Low-latency systems

Real-time / streaming systems

Instrumentation

AI coding tools

Startup experience

Job description

Sela AI, the market-leading AI voice agent for mortgage lenders, is seeking a software engineer to own major components of its real-time voice platform, from architecture to production reliability.

You will improve voice performance, build observability tools, and integrate the voice stack with simulation systems, while training models for turn-taking and voicemail detection. Join a high-growth SF team building essential AI infrastructure.