https://frontierroles.com/ai-jobs-san-mateo/ AI engineering roles in San Mateo, United States — LLM apps, RAG, agents, evals and inference. Pulled from company career sites, never scraped aggregators. en Sat, 01 Aug 2026 10:56:07 GMT https://frontierroles.com/jobs/roblox-senior-software-engineer-machine-learning-communication-safety-c9792c/ https://frontierroles.com/jobs/roblox-senior-software-engineer-machine-learning-communication-safety-c9792c/ Roblox · San Mateo, CA, United States · On-site · $260k–313k/yr Thu, 23 Jul 2026 18:48:55 GMT https://frontierroles.com/jobs/roblox-principal-machine-learning-engineer-content-safety-c1aa20/ https://frontierroles.com/jobs/roblox-principal-machine-learning-engineer-content-safety-c1aa20/ Roblox · San Mateo, CA, United States · On-site · $295k–345k/yr · Skills: Quantization, LoRA, Distillation, Computer vision Mon, 20 Jul 2026 17:24:05 GMT inference finetuning core_ml https://frontierroles.com/jobs/roblox-senior-software-engineer-assistant-e18eeb/ https://frontierroles.com/jobs/roblox-senior-software-engineer-assistant-e18eeb/ Roblox · San Mateo, CA, United States · On-site · $197k–243k/yr · Skills: Tool use, Orchestration, Eval harnesses, C++ Wed, 15 Jul 2026 15:45:19 GMT agents evals language https://frontierroles.com/jobs/freshworks-staff-engineer-machine-learning-79a5a6/ https://frontierroles.com/jobs/freshworks-staff-engineer-machine-learning-79a5a6/ Freshworks · San Mateo, CA, United States · Hybrid · $211k–261k/yr · Skills: LangChain, RAG, Pinecone, Weaviate, Multi-agent, Orchestration Wed, 08 Jul 2026 17:52:24 GMT llm rag agents evals mlops cloud language https://frontierroles.com/jobs/fireworksai-mts-research-engineer-18908b/ https://frontierroles.com/jobs/fireworksai-mts-research-engineer-18908b/ Fireworks AI · San Mateo · On-site · $250k–400k/yr · Skills: vLLM, Embeddings, GPU, Triton, PyTorch, TensorFlow Wed, 08 Jul 2026 01:55:35 GMT llm rag inference core_ml language https://frontierroles.com/jobs/roblox-technical-director-ai-roblox-studio-9432c2/ https://frontierroles.com/jobs/roblox-technical-director-ai-roblox-studio-9432c2/ Roblox · San Mateo, CA, United States · On-site · $399k–458k/yr · Skills: Tool use, Quantization, RLHF, Distillation Tue, 07 Jul 2026 15:37:39 GMT agents inference finetuning https://frontierroles.com/jobs/freshworks-principal-engineer-e3eae7/ https://frontierroles.com/jobs/freshworks-principal-engineer-e3eae7/ Freshworks · San Mateo, CA, United States · Hybrid · Skills: LangChain, RAG, Embeddings, Multi-agent, Orchestration, Kubernetes Mon, 06 Jul 2026 17:13:19 GMT llm rag agents mlops language https://frontierroles.com/jobs/freshworks-staff-backend-ai-platform-engineer-d6f1ac/ https://frontierroles.com/jobs/freshworks-staff-backend-ai-platform-engineer-d6f1ac/ Freshworks · San Mateo, CA, United States · Hybrid · $225k–278k/yr · Skills: LangChain, RAG, Pinecone, Weaviate, Multi-agent, Orchestration Thu, 02 Jul 2026 18:52:50 GMT llm rag agents evals mlops cloud language https://frontierroles.com/jobs/roblox-2026-senior-machine-learning-engineer-systems-embodied-ai-npcs-ml-platform-phd-early-career-97b2f4/ https://frontierroles.com/jobs/roblox-2026-senior-machine-learning-engineer-systems-embodied-ai-npcs-ml-platform-phd-early-career-97b2f4/ Roblox · San Mateo, CA, United States · On-site · $197k–243k/yr · Skills: GPU, Quantization, Deep learning, Kubernetes, AWS, Azure Tue, 30 Jun 2026 16:38:40 GMT inference core_ml mlops cloud https://frontierroles.com/jobs/roblox-2026-senior-machine-learning-engineer-systems-embodied-ai-npcs-ml-platform-phd-early-career-ac66b6/ https://frontierroles.com/jobs/roblox-2026-senior-machine-learning-engineer-systems-embodied-ai-npcs-ml-platform-phd-early-career-ac66b6/ Roblox · San Mateo, CA, United States · On-site · $197k–243k/yr · Skills: GPU, Quantization, Deep learning, Kubernetes, AWS, Azure Tue, 30 Jun 2026 16:38:29 GMT inference core_ml mlops cloud https://frontierroles.com/jobs/freshworks-gtm-ai-engineer-6e48c3/ https://frontierroles.com/jobs/freshworks-gtm-ai-engineer-6e48c3/ Freshworks · San Mateo, CA, United States · Hybrid · $192k–238k/yr · Skills: Tool use, Orchestration, MCP, Eval harnesses, Go Thu, 25 Jun 2026 14:16:32 GMT agents evals language https://frontierroles.com/jobs/roblox-senior-machine-learning-engineer-reliability-b1f4a9/ https://frontierroles.com/jobs/roblox-senior-machine-learning-engineer-reliability-b1f4a9/ Roblox · San Mateo, CA, United States · On-site · $197k–243k/yr · Skills: Go Thu, 18 Jun 2026 14:25:57 GMT language https://frontierroles.com/jobs/roblox-distinguished-machine-learning-engineer-safety-b4088e/ https://frontierroles.com/jobs/roblox-distinguished-machine-learning-engineer-safety-b4088e/ Roblox · San Mateo, CA, United States · On-site · $399k–458k/yr · Skills: NLP, Computer vision Thu, 18 Jun 2026 00:37:56 GMT core_ml https://frontierroles.com/jobs/roblox-senior-software-engineer-fraud-4c341e/ https://frontierroles.com/jobs/roblox-senior-software-engineer-fraud-4c341e/ Roblox · San Mateo, CA, United States · On-site · $197k–243k/yr Mon, 15 Jun 2026 21:29:53 GMT https://frontierroles.com/jobs/fireworksai-ai-field-engineer-enterprise-2d7057/ https://frontierroles.com/jobs/fireworksai-ai-field-engineer-enterprise-2d7057/ Fireworks AI · San Mateo · On-site · $200k–260k/yr · Skills: vLLM, Embeddings, GPU, TensorRT, Quantization, DPO Thu, 11 Jun 2026 21:17:18 GMT llm rag inference finetuning core_ml mlops cloud language https://frontierroles.com/jobs/fireworksai-ai-field-engineer-microsoft-foundry-275a52/ https://frontierroles.com/jobs/fireworksai-ai-field-engineer-microsoft-foundry-275a52/ Fireworks AI · San Mateo · On-site · $200k–260k/yr · Skills: LangChain, LlamaIndex, vLLM, Embeddings, Tool use, Eval harnesses Thu, 11 Jun 2026 18:19:24 GMT llm rag agents evals inference finetuning core_ml mlops cloud language https://frontierroles.com/jobs/roblox-senior-software-engineer-ugc-validation-147166/ https://frontierroles.com/jobs/roblox-senior-software-engineer-ugc-validation-147166/ Roblox · San Mateo, CA, United States · On-site · $197k–243k/yr · Skills: Python, C++ Wed, 10 Jun 2026 20:25:38 GMT language https://frontierroles.com/jobs/fireworksai-ai-field-engineer-ai-natives-2e49af/ https://frontierroles.com/jobs/fireworksai-ai-field-engineer-ai-natives-2e49af/ Fireworks AI · San Mateo · On-site · $200k–260k/yr · Skills: vLLM, Embeddings, GPU, TensorRT, Quantization, DPO Tue, 09 Jun 2026 22:35:54 GMT llm rag inference finetuning core_ml mlops cloud language https://frontierroles.com/jobs/fireworksai-member-of-technical-staff-full-stack-software-engineer-bf04c3/ https://frontierroles.com/jobs/fireworksai-member-of-technical-staff-full-stack-software-engineer-bf04c3/ Fireworks AI · San Mateo · On-site · $175k–220k/yr · Skills: LangChain, LlamaIndex, Embeddings, Orchestration, PyTorch, Docker Fri, 05 Jun 2026 17:30:24 GMT llm rag agents core_ml mlops cloud language https://frontierroles.com/jobs/roblox-principal-software-engineer-gpu-compute-c07e04/ https://frontierroles.com/jobs/roblox-principal-software-engineer-gpu-compute-c07e04/ Roblox · San Mateo, CA, United States · On-site · $345k–399k/yr · Skills: GPU, Kubernetes, Go Thu, 04 Jun 2026 18:45:56 GMT inference mlops language https://frontierroles.com/jobs/roblox-senior-machine-learning-engineer-genai-data-2e418f/ https://frontierroles.com/jobs/roblox-senior-machine-learning-engineer-genai-data-2e418f/ Roblox · San Mateo, CA, United States · On-site · $243k–295k/yr · Skills: Orchestration, Ray, Kubeflow, Python, C++ Thu, 21 May 2026 23:44:43 GMT agents mlops language https://frontierroles.com/jobs/skydio-autonomy-engineer-ml-dl-infrastructure-843758/ https://frontierroles.com/jobs/skydio-autonomy-engineer-ml-dl-infrastructure-843758/ Skydio · San Mateo, California, United States · Hybrid · $170k–278k/yr · Skills: Deep learning Thu, 07 May 2026 18:18:31 GMT core_ml https://frontierroles.com/jobs/roblox-principal-model-optimization-engineer-a40852/ https://frontierroles.com/jobs/roblox-principal-model-optimization-engineer-a40852/ Roblox · San Mateo, CA, United States · On-site · $295k–345k/yr · Skills: GPU, Triton, TensorRT, Quantization Tue, 05 May 2026 18:13:46 GMT inference