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Jack & Jill Logo

Senior Software Engineer ($160K – $250K + Equity) at Series B Multimodal AI Lab

Jack & Jill

$160,000 - $250,000
Dec 31, 2025
San Fransisco, CA, US
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Series B backed multimodal AI lab is looking to bridge the gap between human and machine communication by developing a real-time conversational video interface

Requirements

  • Expert in Python with extensive experience in asynchronous frameworks, multiprocessing, and low-level system concepts
  • Proven track record of shipping polished, reliable software in ambiguous, fast-paced environments where the state-of-the-art evolves rapidly
  • Strong communicator who can simplify complex technical concepts
  • Experience with LLM frameworks or WebRTC video streaming
  • Extensive experience in asynchronous frameworks
  • Experience with multiprocessing and low-level system concepts
  • Proven track record of optimizing system performance

Responsibilities

  • Own the delivery of core features including voice localization, sentence endpointing, and naturalness optimization for real-time video
  • Partner with research teams to integrate sophisticated multimodal models into a reliable, high-uptime production codebase
  • Optimize system performance by centralizing inter-process communication and shaving latency off utterance turn-taking for smoother conversations
  • Lead the technical development of a real-time conversational video interface
  • Collaborate with research teams to integrate state-of-the-art simulations into production-ready software for global enterprise applications
  • Optimizing multimodal models for low latency, multilingual support, and natural interaction
  • Build AI humans that see, hear, and respond in real-time

Other

  • Strong communicator who can simplify complex technical concepts
  • Ability to work in a high-impact environment
  • Ability to shape architecture and ship features that reach millions of users across multiple languages
  • Ability to work in a fast-paced environment
  • Degree requirements not specified