Senior Software Engineer Equity at Series B Multimodal AI Lab

Senior Software Engineer

Salary: $160K – $250K + Equity

Company: Series B backed multimodal AI lab

Location: San Francisco, USA

You will lead the technical development of a real‑time conversational video interface, bridging the gap between human and machine communication. This hands‑on role involves optimizing multimodal models for low latency, multilingual support, and natural interaction. You will collaborate with research teams to integrate state‑of‑the‑art simulations into production‑ready software for global enterprise applications.

• Work at the forefront of human–computer interaction by building AI humans that see, hear, and respond in real‑time.
• Join a well‑funded Series B startup backed by top‑tier VCs that is defining the conversational video interface category.
• Experience a high‑impact environment where you can shape architecture and ship features that reach millions of users across multiple languages.

• Own the delivery of core features including voice localization, sentence end pointing, 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.

• 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 and has experience with LLM frameworks or WebRTC video streaming.