software engineer

ai engineering lead Jobs in San Francisco

ai engineering lead

backend engineer, api Jobs in San Francisco

backend engineer, api

backend engineer, integrations Jobs in San Francisco

backend engineer, integrations

backend software engineer, api platform Jobs in San Francisco

backend software engineer, api platform

full stack software developer

FriendliAI

<div><h3 class="jobSectionHeader">About the Job</h3>
We&rsquo;re seeking a Full-Stack Engineer to design, build, and scale our web platform, which serves as the core interface for deploying multimodal models, observing workloads, and building agent workflows. In this role, you&rsquo;ll work closely with product, infrastructure, and design teams to create high-performance, developer-friendly, and enterprise-ready tools.
We are looking for a hands-on engineer who is eager to work at the intersection of infrastructure, developer experience, and AI applications. The ideal candidate is a talented full-stack developer, strong collaborator, and someone who enjoys working across the stack, cares deeply about developer workflows, and is excited to help define the future of AI adoption.<h3 class="jobSectionHeader">
Key Responsibilities</h3><ul><li>
Design, build, and maintain web applications and tools for AI model deployment, monitoring, and performance optimization</li><li>
Develop clean, scalable, and robust APIs powering AI agents, workflows, and user-facing systems</li><li>
Collaborate with infrastructure engineers to integrate backend systems with deployment and orchestration pipelines</li><li>
Optimize the performance and usability of web interfaces</li><li>
Drive code quality through automated testing, CI/CD, and code reviews</li><li>
Contribute to architecture and design decisions that shape our platform&rsquo;s long-term direction</li><li>
Identify and resolve technical debt and improve system reliability in production systems</li></ul><h3 class="jobSectionHeader">
Qualifications</h3><ul><li>
5+ years of industry experience in full-stack or backend engineering</li><li>
Bachelor&rsquo;s or Master's degree in Computer Science, Computer Engineering, or equivalent</li><li>
Fluent in TypeScript and Python, Expert with React/Next.js</li><li>
Strong backend experience with FastAPI or similar Python frameworks</li><li>
Proven expertise in delivering production-scale full-stack applications</li><li>
Proficiency in designing data models, writing SQL, and working with PostgreSQL</li><li>
Deep understanding of modern web frameworks and component-driven architecture</li><li>
Strong API design experience across gRPC/REST/GraphQL in production systems</li><li>
Solid foundation in cloud-native development</li><li>
Familiarity with OpenTelemetry tracing, metrics, and structured logging</li><li>
Knowledge of web security, authentication, RBAC, and multi-tenant SaaS systems</li></ul><h3 class="jobSectionHeader">
Preferred Experience</h3><ul><li>
Familiarity with LLM-based workflows, tool invocation, or agentic systems</li><li>
Familiarity with Kubernetes for container orchestration, including deploying, scaling, and managing containerized applications in production environments</li><li>
Have worked in a startup or fast-paced environments with ownership and ambiguity</li><li>
Built developer-facing SDKs/CLIs</li><li>
Passion for developer experience and enabling AI adoption</li></ul><h3 class="jobSectionHeader">
Benefits</h3><ul><li>
Flexible working hours</li><li>
Daily lunch and dinner provided; unlimited snacks and beverages</li><li>
Supportive and highly collaborative work environment</li><li>
Health check-up support and top-tier equipment/hardware support</li><li>
A front-row seat to the generative AI infrastructure revolution</li><li>
Competitive compensation, startup equity, health insurance, and other benefits.</li></ul><h3 class="jobSectionHeader">
About FriendliAI</h3>
FriendliAI is building the world&rsquo;s best AI inference platform that makes large language and multi-modal models fast, efficient, and deployable at scale. We power high-throughput, low-latency AI workloads for organizations worldwide and integrate directly with Hugging Face, giving developers instant access to over 500,000 open-source models.
We are a small, fast-moving team doing work that matters at one of the most exciting moments in the history of technology. With our world-class inference engine, we are building a platform that the AI industry can actually rely on.</div>

Software Engineer - Full Stack

OpenAI

<div>
 
 About The Team
 
 
 
 At OpenAI, our Full Stack engineers help power core capabilities that tie front-end experiences with scalable backend systems. We&rsquo;re hiring across teams including Growth, Ecosystems, Personalization, Search Infrastructure, and Platform Engineering to develop both user-facing features and foundational services that bring them to life.
 
 
 
 About The Role
 
 
 
 We&rsquo;re looking for Full Stack Software Engineers who enjoy blending front-end and back-end work to deliver impactful features. In this role, you will:
 
 
 
 What You&rsquo;ll Do
 
 
 
 <ul>
 <li>
 Build end-to-end web applications and platform features that enhance ChatGPT experiences.
 </li>
 <li>
 Collaborate with designers, product managers, and infrastructure teams.
 </li>
 <li>
 Design robust APIs, scalable services, and engaging UI components.
 </li>
 <li>
 Ensure the integrity, security, and performance of systems you build.
 </li>
 <li>
 Contribute to team best practices in testing, architecture, and SDLC.
 
 
 </li>
 </ul>
 
 You Might Thrive Here If You
 
 
 
 <ul>
 <li>
 Have experience with both front-end (React, TypeScript) and back-end technologies (Node.js, Python, Go, etc.).
 </li>
 <li>
 Are comfortable owning features from design to deployment.
 </li>
 <li>
 Value high-quality code and polished user experiences.
 
 
 </li>
 </ul>
 We are open to hiring in San Fransisco, New York and Seattle
 
 
 
 About OpenAI
 
 
 
 OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core, and to achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity.
 
 
 We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic.
 
 
 For additional information, please see OpenAI&rsquo;s Affirmative Action and Equal Employment Opportunity Policy Statement.
 
 
 Background checks for applicants will be administered in accordance with applicable law, and qualified applicants with arrest or conviction records will be considered for employment consistent with those laws, including the San Francisco Fair Chance Ordinance, the Los Angeles County Fair Chance Ordinance for Employers, and the California Fair Chance Act, for US-based candidates. For unincorporated Los Angeles County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: protect computer hardware entrusted to you from theft, loss or damage; return all computer hardware in your possession (including the data contained therein) upon termination of employment or end of assignment; and maintain the confidentiality of proprietary, confidential, and non-public information. In addition, job duties require access to secure and protected information technology systems and related data security obligations.
 
 
 To notify OpenAI that you believe this job posting is non-compliant, please submit a report through this form. No response will be provided to inquiries unrelated to job posting compliance.
 
 
 We are committed to providing reasonable accommodations to applicants with disabilities, and requests can be made via this link.
 
 
 OpenAI Global Applicant Privacy Policy
 
 
 At OpenAI, we believe artificial intelligence has the potential to help people solve immense global challenges, and we want the upside of AI to be widely shared. Join us in shaping the future of technology.
 
 
 Compensation Range: $185K - $385K
</div>

Full Stack Software Engineer, ChatGPT Engineering

Loop

<div>
 
 About Loop
 
 
 
 Loop is the data platform for the global supply chain. Logistics runs on messy, unstructured data&mdash;trapped in PDFs, emails, and legacy systems. We use AI to structure this chaos, creating a "source of truth" that automates payments and audits for the Fortune 100.
 
 
 We are building the financial nervous system for a $100 trillion physical economy. Our technology ensures freight moves efficiently and carriers get paid instantly.
 
 
 Backed by Founders Fund, Index Ventures and 8VC, we are scaling rapidly. We are looking for engineers ready to deploy production AI that powers the physical economy.
 
 
 
 About You
 
 
 
 As a full-stack engineer, you will work closely with founders and customers to understand and solve their logistics billing and payment pain points. You will help define the product and ship features that directly impact our customers. You will face and solve many complex technical challenges while you receive guidance and feedback from the team. You will shape the Loop DNA and define how we grow as a company.
 
 
 
 Responsibilities
 
 
 
 <ul>
 <li>
 Work cross-functionally with product, design, and sales to understand requirements and ship thoughtful solutions.
 </li>
 <li>
 Write high-quality code optimized for extensibility.
 </li>
 <li>
 Engage in code reviews to maintain a high bar of engineering excellence.
 </li>
 <li>
 Lead discussions and documentation to communicate and arrive at the best technical design.
 </li>
 <li>
 Work across different component boundaries, from frontend to backend, and even infrastructure layers.
 </li>
 <li>
 Adopt AI technologies such as Cursor/Codex/Claude to accelerate software development and champion adoption of AI tools across the organization for increased productivity.
 </li>
 <li>
 Promote better practices and share technical knowledge across the team.
 </li>
 <li>
 Help grow Loop through deliberate feedback on product, process, and culture.
 
 
 </li>
 </ul>
 
 Qualifications
 
 
 
 <ul>
 <li>
 Willing to work in the SF or Chicago office three days a week
 </li>
 <li>
 Two years of software engineering experience.
 </li>
 <li>
 Experience with TypeScript and tools such as GraphQL, Relay, React, and Node.js.
 </li>
 <li>
 Experience working at early-stage companies where you shipped products end-to-end and wore many hats.
 
 
 </li>
 </ul>
 
 Under the Hood
 
 
 
 <ul>
 <li>
 Infrastructure: AWS, CDK, Fargate ECS
 </li>
 <li>
 Backend: TypeScript, Node.js, Prisma, NestJS, PostgreSQL, Kafka, Redis, Elasticsearch, GraphQL
 </li>
 <li>
 Frontend: TypeScript, React, Relay, Ant Design, Vite, GraphQL
 
 
 </li>
 </ul>
 
 Compensation
 
 
 
 <ul>
 <li>
 Base pay 150k+ per year
 
 
 </li>
 </ul>
 
 Benefits &amp; Perks
 
 
 
 <ul>
 <li>
 Premium Medical, Dental, and Vision Insurance plans
 </li>
 <li>
 Insurance premiums covered 100% for you
 </li>
 <li>
 Unlimited PTO
 </li>
 <li>
 Fireside chats with industry leading keynote speakers
 </li>
 <li>
 Generous professional development budget to feed your curiosity
 </li>
 <li>
 Physical and Mental fitness subsidies for yoga, meditation, gym, or ski memberships
 
 
 </li>
 </ul>
 Why you should join Loop?
 
 
</div>

Software Engineer, Full-Stack

Crossing Hurdles

<div>
 
 Crossing Hurdles is a global recruitment firm partnering with leading US-based startups. We are hiring for a
 
 rapidly growing frontier AI infrastructure company
 
 backed by top-tier venture investors and building core systems for the next generation of AI agents. The company is well-capitalized, growing quickly, and building a highly technical team in
 
 San Francisco
 
 to work on some of the most challenging problems in reinforcement learning and AI infrastructure.
 
 
 
 
 
 
 Role Snapshot:
 
 
 
 
 Role:
 
 Member of Technical Staff
 
 
 
 Compensation:
 
 $160K &ndash; $600K + Competitive Equity
 
 
 
 Location:
 
 San Francisco, US | In-person (6 days/week)
 
 
 
 YOE:
 
 0+ years of experience in full-stack or infrastructure engineering, particularly in low-level systems or as a founding engineer
 
 
 
 Benefits:
 
 Competitive Equity + Visa Sponsorship (evaluated case-by-case)
 
 
 
 
 
 
 Why should you consider?
 
 
 <ul>
 <li>
 Work on reinforcement learning environments and infrastructure powering next-generation AI agents.
 </li>
 <li>
 Collaborate with a highly technical team solving complex systems and AI research problems.
 </li>
 <li>
 Build realistic simulation environments, data systems, and tasks for advanced AI training.
 </li>
 <li>
 High ownership in a fast-growing startup backed by top-tier investors.
 </li>
 <li>
 Operate at the frontier of AI development with meaningful real-world impact.
 </li>
 </ul>
</div>

Full Stack Software Engineer

<div>
 
 About The Team
 
 
 
 The Cooperative AI team is scaling OpenAI with OpenAI. We are building an AI powered knowledge system that evolves and learns as our products, systems and customers evolve. We leverage our state of the art models, technologies, and products (some external, some still in the lab) to assist or completely automate robust operations supporting both internal and external customers. We support OpenAI customers and internal partners globally, powering systems from customer support to integrity to product insights. We are a self-contained multi-disciplinary team, who enjoy a lightning fast feedback loop with customers at scale, some of whom sit just a few pods away. We iterate fast, and engineer for reliable long-term impact. We're constantly looking for the similarities and patterns in different types of work, and focus on building simple primitives, to apply world class knowledge to many domains.
 
 
 The work of this team exemplifies use of OpenAI technologies. We build systems so everyone can see the leverage that is possible with well designed AI-based implementations. We do this by working through internal use cases focused on Customers (specifically knowledge systems, automation systems, and automated agent systems) to prove impact, then we scale.
 
 
 
 About The Role
 
 
 
 We&rsquo;re looking for
 
 Software Engineers
 
 who're passionate about blending production-ready platform architecture with new tech and new paradigms. You&rsquo;ll push the boundaries of OpenAI&rsquo;s newest technologies to enable interactions and automations that are not only functional, but delightful. We value proactive, customer-centric engineers who can get the foundational details right (data models, architecture, security) in service of enabling great products.
 
 
 
 In This Role, You Will
 
 
 
 <ul>
 <li>
 Own the end-to-end development lifecycle for new platform capabilities and integrations with other systems
 </li>
 <li>
 Collaborate closely with engineers, data scientists, information systems architects, and internal customers to understand their problems and implement effective solutions
 </li>
 <li>
 Work with product and research team to share relevant feedback and iterate on applying their latest models
 
 
 </li>
 </ul>
 
 About OpenAI
 
 
 
 OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core, and to achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity.
 
 
 We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic.
 
 
 For additional information, please see OpenAI&rsquo;s Affirmative Action and Equal Employment Opportunity Policy Statement.
 
 
 Background checks for applicants will be administered in accordance with applicable law, and qualified applicants with arrest or conviction records will be considered for employment consistent with those laws, including the San Francisco Fair Chance Ordinance, the Los Angeles County Fair Chance Ordinance for Employers, and the California Fair Chance Act, for US-based candidates. For unincorporated Los Angeles County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: protect computer hardware entrusted to you from theft, loss or damage; return all computer hardware in your possession (including the data contained therein) upon termination of employment or end of assignment; and maintain the confidentiality of proprietary, confidential, and non-public information. In addition, job duties require access to secure and protected information technology systems and related data security obligations.
 
 
 To notify OpenAI that you believe this job posting is non-compliant, please submit a report through this form. No response will be provided to inquiries unrelated to job posting compliance.
 
 
 We are committed to providing reasonable accommodations to applicants with disabilities, and requests can be made via this link.
 
 
 OpenAI Global Applicant Privacy Policy
 
 
 At OpenAI, we believe artificial intelligence has the potential to help people solve immense global challenges, and we want the upside of AI to be widely shared. Join us in shaping the future of technology.
 
 
 Compensation Range: $230K - $385K
</div>

Software Engineer, Cooperative AI

Ｃollective

<div>About Collective:
Collective is on a mission to redefine the way businesses-of-one work. Our technology and team of trusted advisors help members achieve financial independence by taking care of everything from business incorporation to accounting, bookkeeping, tax services, and access to a thriving community, all in one integrated platform. We believe in empowering self-employed people to enjoy the same tax savings that big companies get, so they can focus on their passion, not paperwork.
Featured in Forbes, Business Insider, Yahoo, Bloomberg, Financial Times, TechCrunch, and more. We are backed by General Catalyst, Sound Ventures (Ashton Kutcher and Guy Oseary), QED Investors, Google&rsquo;s Gradient Ventures, Expa, and other investors who have financed iconic companies like YouTube, Substack, Twitch, Box, Hims, Instacart, and Lyft.
About the role:
We&rsquo;re hiring a Senior Software Engineer to build and evolve the core product experiences that power Collective&rsquo;s member platform. This is a product engineering role with high ownership across the stack, working closely with Product, Design, and Operations to ship fast and iterate based on real customer needs. You&rsquo;ll be expected to use modern AI tools and agent-based workflows to accelerate development, improve code quality, and unlock new product capabilities. This role is ideal for engineers who think in terms of outcomes, not tickets, and who see AI as a core part of how software gets built today.
What you'll do:<ul><li>
Own features end-to-end &mdash; define the problem, build the solution, deploy it, and iterate until it works</li><li>
Ship high-quality, user-facing product experiences across frontend and backend systems</li><li>
Partner with Product and Design to break down ambiguous problems into simple, effective solutions &mdash; then build them</li><li>
Leverage AI-powered development tools (code generation, copilots, agent workflows) to move faster and cut manual overhead</li><li>
Identify and implement AI capabilities in the product where they meaningfully improve the member experience</li><li>
Ship continuously, instrument what you build, and use customer behavior and feedback to drive the next iteration.</li><li>
Make system design decisions that balance speed, scalability, and maintainability &mdash; and own the tradeoffs</li><li>
Build and improve developer workflows through automation, internal tooling, and AI-assisted processes</li><li>
A habit of evaluating new tools, frameworks, and approaches &mdash; and a willingness to recommend what works and kill what doesn't</li></ul>
What you'll bring:<ul><li>
 5+ years of experience building and shipping production software in a product-focused environment</li><li>
Strong fullstack engineering skills (e.g., Python, Django, React, or similar modern frameworks)</li><li>
Track record of owning features or systems end-to-end and delivering measurable user impact</li><li>
Experience using AI developer tools (copilots, code agents, custom workflows) to ship faster &mdash; not just experiment with them</li><li>
Ability to take a loosely defined member problem and drive it to a shipped solution without waiting for a fully specced PRD</li><li>
Product instinct that lets you make good scope and UX tradeoffs without a designer in every conversation</li><li>
Clear communication and collaboration skills across technical and non-technical partners</li><li>
Demonstrated ability to integrate AI agents and automation into development workflows and product features</li></ul>
What we offer:<ul><li>
Hybrid Work Model: Based in San Francisco with a balance of in-office and remote flexibility.</li><li>
Fresh Lunch: Provided on in-office days.</li><li>
Commuter Support: $150 monthly reimbursement for transit expenses.</li><li>
Health &amp; Wellness: $200 quarterly reimbursement to support your well-being.</li><li>
Time Off: Flexible PTO plus 14 company holidays.</li><li>
Comprehensive Coverage: 100% medical, dental, and vision for employees; 75% coverage for dependents.</li><li>
Parental Leave: 16 weeks fully paid.</li><li>
Retirement &amp; Ownership: 401k plan plus an equity package.</li><li>
Team Connection: Quarterly virtual events and an annual in-person summit.</li></ul>
Compensation Range: $195K - $230K</div>

Senior Software Engineer

Love Freedom Solution

<div>
 
 Full Stack Software Engineer (1&ndash;3 YOE) | AI Startup | Onsite &ndash; San Francisco
 
 
 About the Opportunity
 
 
 
 Lovefreedom Solution has the luxury to work with a
 
 high-growth, VC-backed startup
 
 building infrastructure for next-generation AI systems. This company works directly with leading AI labs and is scaling rapidly following strong early traction.
 
 
 They are hiring a
 
 Full Stack Software Engineer (1&ndash;3 years experience)
 
 to help build core product and infrastructure systems used at scale.
 
 
 This is a
 
 high-ownership, hands-on engineering role
 
 with direct exposure to cutting-edge AI workflows.
 
 
 
 Key Responsibilities
 
 
 
 <ul>
 <li>
 Build and ship full-stack applications end-to-end
 </li>
 <li>
 Develop frontend systems using Next.js / React
 </li>
 <li>
 Contribute to backend services using Node.js or Python
 </li>
 <li>
 Work with Kubernetes-based infrastructure
 </li>
 <li>
 Design scalable systems supporting high-volume user workflows
 </li>
 <li>
 Partner with internal teams and stakeholders in a client-facing capacity
 
 
 </li>
 </ul>
 
 Required Qualifications (Non-Negotiable)
 
 
 
 <ul>
 <li>
 1&ndash;3 years of experience as a Full Stack Engineer
 </li>
 <li>
 Experience at:
 </li>
 <ul>
 <li>
 High-growth VC-backed startup, OR
 </li>
 <li>
 Top trading firm, OR
 </li>
 <li>
 Founding engineer at startup that raised $2.5M+
 
 </li>
 </ul>
 </ul>
 
 Technical Requirements
 
 
 
 <ul>
 <li>
 Strong full-stack experience:
 </li>
 <ul>
 <li>
 Frontend: React, Next.js
 </li>
 <li>
 Backend: Node.js or Python
 </li>
 </ul>
 <li>
 Kubernetes (required)
 </li>
 <li>
 Experience with Kafka, Redis, or Elasticsearch is a plus
 
 </li>
 </ul>
 
 What We&rsquo;re Looking For
 
 
 
 <ul>
 <li>
 Proven ability to build products end-to-end
 </li>
 <li>
 Strong sense of ownership and execution
 </li>
 <li>
 Comfortable in a fast-paced, startup environment
 </li>
 <li>
 Strong communication skills (client-facing exposure required)
 
 
 </li>
 </ul>
 
 Work Environment
 
 
 
 <ul>
 <li>
 Onsite: San Francisco (FiDi) &ndash; 5 days/week
 </li>
 <li>
 Flexible working hours
 </li>
 <li>
 High-performance, fast-moving team
 
 
 </li>
 </ul>
 
 Compensation
 
 
 
 <ul>
 <li>
 $180K &ndash; $250K base
 </li>
 <li>
 Competitive equity package
 
 
 </li>
 </ul>
 
 Right to Represent
 
 
 
 By applying, you agree to be represented by
 
 Lovefreedom Solution
 
 for this opportunity.
 
 
 Skills: kubernetes,node.js,stack,infrastructure,software,react,san,high-growth,ownership,python
</div>

Software Engineer

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