Founding Engineer builds knowledge engines, multimodal agents, voice AI, and codegen systems for complex physical product support. Owns end-to-end customer deployments in fast-paced startup environment.
200k – 200k/yr
On-siteEntry levelML Engineering
About the role
What You'll Work On
Knowledge Engine
Build the core engine that stores, relates, and reasons over product knowledge: manuals, compatibility matrices, installation guides, field observations, tribal knowledge.
Deep infrastructure that the rest of the company builds on top of.
Emotionally Intelligent Voice AI
Build phone support where a customer calls in, describes their problem, and gets walked through a solution by an AI that understands tone, frustration, urgency, expression.
Research Engineer building platforms to customize open-source LLMs via fine-tuning, RL, and evaluation. Focus on integrating post-training with inference engines (vLLM, SGLang, TensorRT-LLM), optimizing for RL workloads, and ensuring production reliability. Requires 2+ years ML production experience and strong Python/Go skills.
200k – 290k/yr
On-site2+ YOEML Engineering
Applied AI Engineer
SalientSan Francisco, CA
Member of Technical Staff building production speech and language models for voice AI agents in financial services. Own core modeling, evals, and deployment on a small team with high autonomy and real revenue impact.
Builds evaluation pipelines, LLM judges, and observability tools to measure and improve AI assistant quality. Requires 2+ years software engineering with Go/Python, LLM eval experience, and analytical rigor for backend ML infrastructure.
Build evaluation pipelines, LLM judges, and observability tools to measure and improve AI assistant quality. Requires 2+ years software engineering with strong Python/Go skills and LLM eval experience.
200k – 300k/yr
Hybrid2+ YOEML Engineering
Environment Engineers
AfterQuerySan Francisco, CA
Designs datasets, evaluation rubrics, and reward signals for RLHF/RLVR pipelines to expose model failure modes and improve frontier AI capabilities. Partners with AI labs; requires 1-4 YOE and passion for data-driven model behavior.