AI Engineering Jobs in San Francisco

Physical Intelligence

Physical Intelligence is building general-purpose AI for the physical world, developing foundation models and learning algorithms for robots and future physically-actuated devices. The Infrastructure team is central to this mission, building and operating the backbone for training state-of-the-art VLA models, large-scale simulation, and reliable deployment of intelligence across robot fleets. This role involves collaborating closely with researchers, robotics runtime, product, and platform engineers to ensure infrastructure scales from prototype to production-grade deployments.

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LlamaIndex is seeking a Head of Engineering to lead and develop their engineering team in building software that makes enterprise data useful for AI applications. This is a hands-on role where you will own engineering execution, technical direction, hiring, and team development. You will collaborate closely with company leadership and product teams to define product strategy and delivery. The ideal candidate has shipped and operated B2B API products, with experience in both model serving and model training, from experimentation and evaluation to deployment and production operations.

$200k - $300k

ElevenLabs

ElevenLabs is seeking a RevOps Systems Architect to design and build the systems that power a modern, AI-driven go-to-market engine. This role goes beyond traditional Salesforce administration, focusing on the technical ownership of the entire GTM stack, including Salesforce, data, enrichment, engagement, billing, and AI tools. You will act as both an architect and a hands-on builder, setting the technical direction for CRM and GTM tooling and implementing solutions using technologies like Flows, Apex, SQL, and custom services. For larger initiatives, you will collaborate with the engineering team as a technical peer, contributing to scoping, design, and delivery.

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Handshake is seeking a Machine Learning Engineer I for the Growth Relevance team to help shape the evolution of careers in the AI economy. This role will focus on developing, deploying, and enhancing machine learning systems for lifecycle optimization, personalized notifications, and monetization strategies. You will work with cutting-edge ML infrastructure, including embedding-based retrieval, Graph Neural Networks, and multi-stage rankers, contributing to critical marketplace metrics and responsible AI practices.

$150k - $189k

We are seeking an AI Agent & LLM Engineer to join our team and contribute to the AI systems powering Otter’s conversational knowledge engine and AI Chat. This role involves building and enhancing user-facing agent experiences, evaluation systems, and the underlying platform for reliable, large-scale operation. You will translate ambiguous product challenges into production-ready solutions, define quality metrics, and drive improvements across services, models, and user experience.

$155k - $185k

Replit

Join our engineering team for a 16-week paid internship where you'll work alongside world-class engineers, designers, and product managers to build the future of software creation. You'll contribute to real features that impact millions of developers worldwide, from our AI-powered development environment to the infrastructure that makes lightning-fast collaboration possible. This isn't just about learning—you'll ship meaningful code that helps democratize software creation. Whether you're optimizing our cloud infrastructure, building intuitive developer tools, or enhancing our AI agents, your work will directly empower creators around the globe.

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NewsBreak is seeking an AI Engineer with a focus on AI-Native Product Engineering. This role is part of a team rethinking software development in an AI-native world, where AI is becoming the default for designing, building, testing, and operating software. Engineers on this team will work with coding agents to ship production products rapidly, establishing the architecture, context, quality standards, and guardrails necessary for reliable AI-generated software. The position is frontend-leaning but requires the ability to work across APIs, backend services, data flows, and developer tooling, owning problems end-to-end rather than focusing on a single layer of the stack.

$118k - $212k

Luma is seeking a Software Engineer to own the serving of their AI models. This role involves integrating new model architectures into the inference engine, scaling deployments across thousands of machines, and optimizing the utilization of expensive GPU fleets while meeting internal service level objectives (SLOs). The work focuses on large-scale inference systems, including scheduling, fleet management, deployment pipelines, and ensuring reliability across diverse clusters and hardware providers. This position is ideal for a strong systems engineer comfortable with model serving and Kubernetes at scale, rather than those seeking pure modeling work.

$195k - $345k

Figure is an AI robotics company developing autonomous general-purpose humanoid robots with the goal of shipping robots with human-level intelligence for home and commercial markets. You will be working within a small but impactful XR team, contributing to critical projects that involve debugging XR applications and running hardware experiments on robots. This role is ideal for someone who thrives on variety and can move quickly without a predefined playbook.

$200k - $400k

LangChain is seeking a Senior Fullstack Engineer to join the team building LangSmith, their commercial observability and evals platform. This role offers the opportunity to significantly influence the platform's technical direction while collaborating with enterprise customers, developer end-users, and internal stakeholders. You will be instrumental in shaping the future of AI agent engineering by contributing to a product used by a significant portion of the Fortune 500.

$175k - $240k

Luma is seeking a Research Scientist/Engineer to focus on optimizing the performance of their multimodal models. This role involves profiling and enhancing GPU, CPU, and accelerator code to ensure efficient training and scalable deployment without compromising quality. You will be responsible for writing kernels and operations that maximize hardware utilization and minimize latency, requiring deep expertise in GPU optimization, transformer internals, and low-level programming.

$195k - $395k

Luma is seeking a Research Scientist / Engineer to build and optimize the distributed systems that train large-scale multimodal models across thousands of GPUs. This role focuses on advanced parallelism, training stability, and utilization across massive clusters, requiring deep expertise in distributed PyTorch and CUDA. The goal is to provide researchers with reliable, efficient, and scalable infrastructure for innovation.

$195k - $395k

HappyRobot is seeking a Product Engineer Intern to develop internal applications and AI agents that enhance operational efficiency across product, engineering, deployments, and go-to-market teams. This role involves building software that is actively used by the HappyRobot team, with guidance from experienced engineers. You will collaborate directly with the CTO and Head of Product, and your work will directly impact various departments by creating tools, agents, and data pipelines to automate workflows and improve processes.

Salary not listed

Baseten

Baseten powers mission-critical inference for leading AI companies by uniting applied AI research, flexible infrastructure, and seamless developer tooling. We enable companies at the frontier of AI to bring cutting-edge models into production. This role focuses on the applied end of post-training research, working directly with stakeholders from fast-growing AI companies to post-train open-source models that outperform frontier closed models on specialized tasks. The day-to-day involves extracting signal from complex, domain-specific datasets and building reward functions, environments, eval harnesses, and training pipelines to improve models that ship to production and reach millions of users.

$200k - $275k

This role focuses on partnering directly with companies to build and operate AI agents in production, transforming prototypes into reliable systems. It's a hands-on, technical position that involves working closely with customer engineers throughout the entire lifecycle, from pre-sales evaluations to post-deployment support. The core objective is to achieve technical success by co-designing agent architectures and ensuring customers can reliably operate these agents at scale using the LangChain suite. This position sits at the intersection of engineering, product, and go-to-market, influencing LangChain's adoption and providing valuable real-world insights back to the platform.

$185k - $315k

Lambda, The Superintelligence Cloud, is seeking a Senior Systems Engineer to join their Enterprise AI Platforms team. This role focuses on building and scaling the internal systems that power Lambda's business, partnering across departments to implement tools, automate workflows, and ensure data integrity. You will be instrumental in designing, developing, and deploying software and services to enhance the availability, scalability, reliability, and efficiency of Lambda’s internal IT systems and platforms. The position requires a proactive approach to problem-solving, automation, and influencing the creation of new architectures for large-scale distributed systems, with a strong emphasis on AI infrastructure and tooling.

$206k - $275k

Hex is seeking its first Engineering Director for AI Engineering to lead a team that blends research and technology to build innovative AI products. This role involves defining and executing research strategy, managing partnerships, driving technical content creation, and hiring/managing a team of AI engineers and researchers. The ideal candidate will have a passion for delivering exceptional AI-backed product experiences and a strong ability to attract and retain top talent.

$300k - $425k

Sierra

Sierra is a leading platform for customer-facing AI agents, partnering with major brands to transform customer service and business growth. We are an in-person company based in San Francisco with a global presence. Our culture is built on values of Trust, Customer Obsession, Craftsmanship, Intensity, and balancing Family. The co-founders, Bret Taylor and Clay Bavor, bring extensive experience from leading tech companies like Salesforce, Facebook, and Google, with Bret currently serving as Board Chair of OpenAI.

$180k - $390k

CHAOS Industries

CHAOS Industries is seeking a highly motivated, mission-oriented Applied AI Engineer to help develop, integrate, and deploy AI/ML-powered capabilities across its product lines. This role involves working closely with data scientists, software engineers, product teams, and mission stakeholders to conduct advanced AI research and translate it into reliable, real-world software, with a particular focus on defense applications requiring extreme accuracy under constrained, adversarial, and complex operational conditions. The ideal candidate possesses strong data science and software engineering fundamentals, a track record of technical excellence, and demonstrated experience applying AI/ML techniques to real products, with a strong plus for experience in aerospace, defense, critical infrastructure, robotics, RF systems, or other highly regulated or mission-driven environments. Comfort with operating independently, quickly learning new technical domains, collaborating across teams, and moving prototypes toward production with limited oversight is essential.

$140k - $193k

Crusoe

Crusoe is building the operating system for AI datacenters, managing one of the world's largest GPU fleets. This role focuses on building a unified platform that senses, reasons about, and acts on the entire fleet, moving beyond traditional operational methods to achieve fleet autonomy. The platform is designed as a product with an API-first approach, offering SDKs, paved paths, and a self-serve portal for internal teams. It comprises agents for telemetry and command execution, a distributed infra graph, a reconciliation core for state management, and domain services for various operational tasks. The goal is to create an autonomous system that continuously improves through a sense-correlate-reason-act-learn loop, reducing manual interventions and enabling other teams to build services and workflows efficiently.

$250k - $300k

Metriport is revolutionizing US healthcare by solving the critical problem of medical data exchange. We transform unusable raw data from legacy systems into a clean, unified format that care teams and their agents can use to improve patient outcomes. Our technology enables rapid data retrieval, providing clinicians with complete patient histories instantly, which can lead to earlier diagnosis and treatment. We are a technology company building every layer of our platform, from data connection and transformation to generating insights, aiming to become the essential infrastructure for US healthcare. Having secured significant funding and achieved product-market fit with millions in ARR and over 100 customers, we are poised for substantial growth.

$200k - $260k

NVIDIA is seeking a Senior Software Engineer to join the NeMo Helix Core team, responsible for building and shipping an open-source, plugin-based AI platform. This platform is designed for developing, evaluating, deploying, and operating AI systems at scale, with a particular focus on optimizing and orchestrating AI Agents across various compute backends. The role involves contributing to a sophisticated agent execution framework that enables parallel experimentation to find efficient agent architectures, making AI systems more sustainable and cost-effective by reducing token usage and improving throughput.

$184k - $357k

Capital One is building responsible and reliable AI systems to transform banking. Leveraging extensive experience in machine learning and technology infrastructure, the company is at the forefront of enterprise AI adoption. This role is within the Intelligent Foundations and Experiences (IFX) team, which is central to bringing the company's AI vision to life. The team partners across the company to advance AI science and engineering, building and deploying proprietary solutions that deliver value to millions of customers and empower other teams with AI capabilities in responsible and scalable ways.

$230k - $262k

Salesforce is seeking a Core Technical Architect to act as a pre-sales, customer-facing expert. This role involves applying broad technical skills and business acumen to align Salesforce solutions with customer digital transformation and cloud adoption strategies. You will be an integral part of the sales cycle, supporting Proofs of Concept and technical deep dives into our AI and Data products, ensuring optimal matching of our solutions to customer challenges.

$148k - $269k