AI Engineering Jobs in San Francisco

NVIDIA is seeking a Principal Systems Software Engineer for Semiconductor Inspection to join their team in Santa Clara. This role involves defining, building, and evaluating AI systems for semiconductor manufacturing, focusing on inspection and metrology. The work spans computer vision, time-series modeling, multimodal AI, and anomaly detection, with a strong emphasis on adapting and deploying these technologies within partner environments. The goal is to create integrated, reliable, and fast AI solutions that can be operated by fabs and equipment vendors, even in air-gapped facilities with limited data and tight production budgets.

$272k - $431k

Thinking Machines Lab

Thinking Machines is building AI that extends human will and judgment, with a focus on training frontier models and developing tools that allow users to customize AI for their unique needs. This role leads the Fine-tuning Science team, focusing on frontier customization techniques and the Tinker post-training engine. It's a player-coach position where you will remain hands-on with scientific research while also guiding the team, shaping its direction, and ensuring research findings are integrated into Tinker. You will collaborate with internal research teams, contribute to open science, and engage with external users.

$350k - $475k

Fieldguide is building software to automate and streamline the work of assurance and audit practitioners in cybersecurity, privacy, and financial audits. The Foundation Agents team focuses on the long-horizon agents that power the Fieldguide AI platform, working at the forefront of AI product development in areas like agent knowledge, evaluations, and improving quality and reliability at scale. As a Senior Software Engineer on this team, you will take ownership of how agent quality is measured and improved, and contribute to driving the platform forward.

$225k - $250k

Distyl AI

Distyl AI is seeking a senior Enterprise AI Architect to act as a long-term technical partner for its strategic Fortune 500 customers. This role involves building trust with C-suite and technical leaders, identifying AI's business value, shaping solutions with clients, and maintaining accountability for the technical relationship post-signature. You will work closely with Go-to-Market, Product, and Forward-Deployed Engineering teams, leading the technical arc of an account from initial conversations through architecture, feasibility, and Statement of Work (SOW) development. For qualified pursuits, you will collaborate with forward-deployed engineers to implement solutions, remaining involved in architecture reviews, steering moments, and expansion opportunities after the initial close.

$200k - $275k

Cursor

As a Research Engineer on the Synth Data team at SpaceXAI, you will invent and scale the synthetic data that teaches our models new capabilities. You will own the full loop: spotting a capability the model is missing, designing a data generation strategy, building reliable pipelines and verifiers, and validating that the resulting data actually moves the model. You will form hypotheses about what data will help, build the systems to produce it at scale, run ablations, and read the resulting traces and training signals to understand why it worked (or didn’t). Your datasets will go directly into frontier training runs and shape the development of Grok models.

Salary not listed

Groq is building high-performance AI infrastructure designed to make inference fast, predictable, and scalable. Our infrastructure teams design and operate the systems that connect compute, data, and services at significant scale. We are looking for a Sr./Staff Network Engineer, AI/HPC to help architect, design, validate, and evolve the network infrastructure supporting Groq's rapidly growing AI compute environments. As a Sr./Staff Network Design Engineer, you will own network architecture and design across high-performance data center and AI infrastructure environments. You will translate capacity, performance, reliability, and business requirements into scalable network designs that can be deployed and operated consistently. This role requires deep expertise in data center networking, routing protocols, network architecture, automation, and large-scale infrastructure. You will work closely with network operations, data center engineering, compute, platform, security, and infrastructure teams to take designs from concept through validation and production deployment.

$270k - $366k

Abridge

Abridge is seeking early-career Software Engineers passionate about making a real-world impact through AI in healthcare. You will join a cross-functional team of researchers, clinicians, and engineers to translate cutting-edge language model capabilities into dependable clinical systems. This role involves building AI-powered features that integrate into clinical workflows, shipping production code, and experiencing accelerated learning and career growth in an environment where Generative AI is central to product development. You will be given significant responsibility and autonomy, working alongside a team dedicated to achieving their best work.

$167k - $184k

We are building the next generation of AI-native product experiences where conversations directly translate into outcomes. As a Staff Software Engineer on our Product teams, you will define how these capabilities are translated into scalable systems and cohesive product experiences. You will operate across the full lifecycle of AI-driven features, from data ingestion and model orchestration to output structuring and delivery into user-facing product surfaces, all at a systems level. This includes shaping the architecture behind generation pipelines, defining how AI outputs are structured and persisted, and ensuring these systems are reliable, performant, and adaptable as both product requirements and underlying models evolve. This role goes beyond individual features; you will drive technical direction across product areas, aligning product, AI, and infrastructure teams on how to build AI-native systems that scale. You will help define patterns for how we evaluate, iterate on, and continuously improve AI-driven experiences, turning ambiguous opportunities into clear systems and execution plans. You will partner closely with product, design, and AI teams to identify high-leverage opportunities, prototype new approaches, and guide them into production, shaping both the product experience and the underlying systems that power it.

$210k - $275k

You.com is building the AI Search Infrastructure that powers modern AI systems, aiming to create a trusted knowledge layer for agents, applications, and enterprises. Our platform combines proprietary indexes with LLM-optimized retrieval systems to solve complex problems in search, large language models, and large-scale infrastructure, making AI systems more reliable, transparent, and useful. This hybrid product engineering and go-to-market role offers significant impact at the intersection of these areas, focusing on shaping our API surface and engaging directly with key customers.

$200k - $250k

We are building the next generation of AI-native product experiences where conversations directly translate into outcomes. As a Senior Software Engineer on our Product teams, you will own significant product areas and play a key role in shaping how AI capabilities deliver real user value. You will work across the full lifecycle of AI-driven features, from data ingestion and model orchestration to output structuring and delivery into user-facing product surfaces. This role involves not only building features but also designing the underlying systems, ensuring AI outputs are reliable, performant, and aligned with user needs. You will tackle complex, ambiguous problems, driving them from concept to production while making thoughtful tradeoffs across latency, cost, and quality. This includes defining how LLMs, retrieval systems, and structured data converge to create cohesive product experiences. Collaborating closely with product, design, and AI teams, you will rapidly prototype and iterate on features like summaries and intelligent workflows, while helping establish best practices for other engineers.

$185k - $230k

Genmo is a research lab focused on developing advanced video world models to understand, simulate, and interact with the physical world, aiming to advance physical intelligence and enable robots to learn and act. We are seeking an exceptional Software Engineer to join our research team in pushing the boundaries of visual generative AI. In this role, you will collaborate with experienced researchers to develop and enhance generative models, ensuring their safe and effective deployment. This is an opportunity to contribute to cutting-edge AI research in a fast-paced startup environment.

Salary not listed

Campfire

Campfire is seeking an AI Engineer to build production AI agents that assist customers with accounting tasks. This hands-on role involves shaping agent architecture, shipping customer-facing features, and establishing reliable engineering practices. You will collaborate closely with engineering, product, and design teams to transform complex problems into trustworthy software solutions. The ideal candidate will combine strong software engineering fundamentals with practical experience in developing and operating agentic applications, from automating financial workflows to enabling customers to understand and act on their financial data.

$180k - $300k

OpenAI

We are seeking an AI Systems Engineer to join our pAGI Infra team, which builds and operates the systems essential for large-scale model training and evaluation. This role involves owning projects from identifying bottlenecks and designing solutions to deployment and operation, focusing on distributed systems engineering, performance optimization, and collaboration with researchers. You will directly contribute to improving the speed and reliability of research by potentially building shared grading services, optimizing resource allocation, or integrating new training stacks into production.

$266k - $500k

CHAOS Industries

CHAOS Industries is seeking a mission-oriented Applied AI Engineer to develop, integrate, and deploy AI/ML capabilities across its defense product lines. This role involves working with data scientists, software engineers, and product teams to conduct advanced AI research and translate it into reliable, real-world software, particularly for defense applications requiring extreme accuracy under challenging conditions. The ideal candidate possesses strong data science and software engineering fundamentals, a track record of technical excellence, and experience applying AI/ML to real products, with a preference for backgrounds in aerospace, defense, or similar mission-driven environments. Comfort with independent operation, rapid learning of new technical domains, cross-team collaboration, and moving prototypes to production with minimal oversight is essential.

$150k - $170k

Artisan

Artisan is building a new, ambitious project at the frontier of agentic AI, pushing the boundaries of what AI agents can achieve. This role is for a hands-on technical lead responsible for designing and building the core AI architecture, focusing on agent behavior, multi-agent systems, tool use, context management, and evaluation. The position offers broad technical ownership as an individual contributor, involving consequential architecture decisions, writing critical system components, and close collaboration with existing engineers and leadership. The ideal candidate enjoys tackling uncertain problems and executing detailed engineering to deliver robust solutions.

$250k - $325k

Cargo

Plaid is seeking a Senior Machine Learning Engineer to join their Fraud Data team. This role will focus on developing and deploying machine learning systems to enhance Plaid's fraud detection products. You will work across the full data science and machine learning lifecycle, from identifying new signals and experimenting with models to deploying and optimizing them in production. The goal is to continuously learn from real-world performance and customer feedback to protect customers from evolving fraud threats. You will lead projects from initial experiments through model deployment and ongoing improvement, identifying predictive patterns in Plaid's network data.

$229k - $315k

AfterQuery

AfterQuery is an applied research lab focused on curating data solutions for foundation model development, serving frontier AI labs with the mission of making expertise widely accessible. This is a unique opportunity to join a rapidly growing company at a pivotal moment in AI. We are backed by leading investors and have a strong founding team with experience from top tech and finance companies. We are seeking exceptional undergraduate and masters students for our AI/ML Research Internship program to work on cutting-edge AI projects in advanced reasoning, computer use, and agentic models. Interns will have access to expert networks and specialized datasets, with opportunities to co-author research papers and present at leading AI conferences.

Salary not listed

OpenAI

We’re hiring a Research Engineer to help OpenAI models solve chip-design problems through reinforcement learning, tool use, and evaluation. You’ll own experiments from the initial idea through implementation and analysis, building environments and evaluations, running training, investigating failures, and using the results to decide what to try next. You’ll also build the software needed to make those experiments reliable and reproducible. We value strong coding fundamentals, careful experimental judgment, and the ability to make progress independently. Prior chip-design experience is helpful, but you can learn the domain alongside the team’s hardware specialists.

$380k - $500k

ASAPP

ASAPP is seeking an enterprising, talented, and curious Machine Learning Engineer to join their AI Engineering team. This role will focus on building and evaluating the core intelligence behind agentic AI systems, playing a key part in designing and owning evaluation frameworks that ensure quality, safety, and performance across complex agentic systems. The Lead Machine Learning Engineer will own and grow the evaluation platform that measures quality, safety, and performance across ASAPP's agentic AI systems, ensuring confidence in model and agent changes before they reach customers.

$170k - $190k

Amplitude

Amplitude is seeking a Senior Software Engineer to join their Statsig team, which is redefining how companies learn, iterate, and ship better experiences. This role offers the opportunity to shape both the product and technical direction of a system used by sophisticated product teams worldwide. You will work across the full stack, utilizing NextJS and Node.js, to build intuitive, high-performance experiences that make experimentation accessible, powerful, and trustworthy. This is a hands-on role where you will own critical product surfaces end-to-end, drive product direction in partnership with design and product leaders, and build and evolve scalable systems.

$165k - $247k

Observe.AI is seeking an AI Agent Engineer to lead the development and deployment of enterprise-grade Voice, Chat AI agents, and AI Copilots. This is a hands-on, customer-facing role responsible for the entire lifecycle of AI Agents, from design and integration to deployment and optimization. You will act as the primary technical partner for clients, guiding them from concept to production and ensuring the successful implementation of AI solutions.

$108k - $170k

Physical Intelligence

Physical Intelligence is seeking a Software Engineer focused on AI productivity to build and deploy tools that enhance AI utilization across the company. This role involves close collaboration with various teams, including engineering, research, and operations, to identify opportunities for AI leverage and translate them into robust internal tools and workflows. The position is within the Runtime team, which focuses on core systems for operational and research efficiency, alongside engineers working on build systems, infrastructure, and developer productivity. The primary focus will be on AI tooling, making AI agents, assistants, integrations, and automation valuable across the organization.

Salary not listed

Code Metal

Code Metal is seeking a Principal Python Engineer to join their Modeling & Simulation team. This role will focus on building the Python services, pipelines, and tooling that drive the core wargaming simulation for a next-generation decision-support platform. You will design backend services and APIs that interface with the frontend, integrate with simulators, manage data, and expose results to analysts and government stakeholders. The position involves developing backend infrastructure that interfaces with agentic AI and machine learning pipelines, designing scenario-generation and campaign-evaluation workflows, and building distributed, cloud-scale infrastructure for running simulations. Strong command of cloud services and distributed architectures is essential.

$250k - $290k

Reflection ai

Reflection is a research lab dedicated to making intelligence open and accessible. We build open models that empower individuals to control their AI and shape its future. This role focuses on designing and operating large-scale multilingual data pipelines, ensuring the quality and effectiveness of data used for training advanced language models. You will contribute to scientific experiments aimed at improving multilingual data efficiency in large language models and develop evaluation sets to identify and address model performance gaps across different languages and domains.

Salary not listed