React Jobs

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

Metriport is revolutionizing US healthcare by solving the critical problem of medical data exchange. We build the technology infrastructure that connects, transforms, and provides insights from raw healthcare data, making it usable for care teams and their agents to improve patient outcomes. Our platform enables record retrieval in seconds, a process that previously took weeks, empowering clinicians with complete patient information at their fingertips. We are a technology company operating in healthcare, building the system of record for US healthcare. Having secured significant funding and achieved product-market fit with a multi-million dollar ARR and over 100 customers, we are poised for substantial growth.

$180k - $220k

Usul is a Silicon Valley AI lab dedicated to rebuilding the infrastructure that equips the Western world, enabling faster technology procurement for the US and its allies. We are seeking a full stack engineer to work on both our government-facing data and workflows platform, and our commercial platform that assists defense companies and startups in winning government contracts. This role involves building intuitive user interfaces and contributing to mission-critical national security solutions.

$160k - $240k

Usul is a Silicon Valley AI lab dedicated to rebuilding the infrastructure that equips the Western world, enabling faster technology procurement for governments and commercial clients. As a Forward Deployed Engineer, you will work directly with operators and government clients to develop and implement AI-driven data and workflows for technology acquisition. You will also contribute to our commercial platform, assisting major defense companies and startups in securing government contracts.

$160k - $240k

Hebbia is seeking a Front-End Engineer to join the Agents team, focusing on building the user interface for universal knowledge capture. This role involves creating simple, delightful experiences for users to direct long-running agents, review citations, and iterate on key deliverables. You will translate new agentic capabilities from the research team into polished web and iOS interfaces. Engineers are empowered to own features end-to-end, including building necessary backend components like new endpoints, streaming APIs, or custom tools. The position requires deep expertise in modern web front-end engineering, strong product sense, and comfort with backend development when needed. Experience with iOS development is highly valued as the team expands its mobile presence. You will collaborate closely with applied researchers and infrastructure engineers, understanding the full system from model calls to UI.

$160k - $300k

Credal is seeking a founding web full-stack software engineer to help build a scalable, performant architecture while maintaining industry-leading security. This role involves owning aspects of stability, scalability, and security, ensuring reliable syncing of billions of records, and contributing to architecture and code quality. You will engage directly with customers to solve complex problems, mentor junior engineers, and take end-to-end ownership of core products. The ideal candidate is a versatile software engineer comfortable across the full stack, excited about Agentic AI/LLM applications, and possesses strong software engineering fundamentals.

$190k - $250k

Rescale is seeking a product-focused Software Engineer, AI Systems to join their infrastructure organization. This role will focus on building and enhancing Rescale's Data Intelligence and Agentic AI platforms. The work involves developing production agents, retrieval systems, evaluation frameworks, and data ingestion pipelines that connect customer environments, cloud storage, and compute clusters. You will collaborate closely with Product Management to define customer problems, refine specifications, and prioritize deliverables, taking ownership of the technical design and execution of key platform components. A significant aspect of the role involves actively using Rescale's product to identify areas for improvement and iterating on launched features.

$115k - $159k

SambaNova is seeking a Senior Principal AI Solutions Engineer, a hands-on technical leader responsible for setting the technical direction of their solutions portfolio and actively building agentic applications. This role involves transforming customer problems into polished, production-ready applications rapidly. You will work across the entire modern AI stack, including open-weight models, agent frameworks, self-improving evaluation loops, multimodal and voice pipelines, and user-friendly front-end interfaces. You will lead engagements with strategic customers, mentor the solutions team, and provide valuable feedback to the platform. This position requires expertise in designing and building reliable single- and multi-agent systems with advanced features like planning, tool/function calling, and long-running workflows. You will also develop feedback loops for continuous improvement of agents, including automated evaluations and fine-tuning. A key aspect is setting up robust evaluation, tracing, and guardrails to ensure quality, cost-effectiveness, and latency for deployed solutions.

$234k - $286k

Monte Carlo is seeking a Senior Fullstack Engineer to join their team and build the core of their agent trust platform. This role involves developing backend services, distributed systems, and agentic workflows that enable enterprises to monitor and trust AI in production. You will take ownership of problems from initial concept through prototyping, architecture, development, testing, and deployment, ensuring reliability, observability, and scalability as the platform grows. The position is primarily backend-focused but includes shipping React surfaces when necessary, and involves building and maintaining data pipelines for analytics, ML, and customer-facing features. You will collaborate with product, ML, and infrastructure teams to deliver customer value.

$180k - $230k

Retool is building the platform that makes custom software, especially AI-powered applications, safe to ship. As AI empowers more people to build software, the risk of shipping ungoverned applications grows. Retool provides a platform that connects to business data, enforces enterprise policies, and allows teams to create and reuse components safely. This role focuses on building the agent platform behind Retool's AI products, owning model-driven behavior in production, and ensuring the reliability, affordability, and scalability of agentic products used by engineering teams.

$164k - $306k

Toast is seeking a Staff Software Engineer to join the Voice AI Team. This role will be instrumental in building and operating the voice platform that powers Toast and developing novel applications on top of it. This is a greenfield opportunity where the platform and its use cases are being defined, and your work will be foundational for years to come. You will take end-to-end ownership of significant projects, including system design, execution, and technical decision-making. Collaboration with product, engineering, and stakeholders across Toast will be key to transforming ambiguous problems into reliable, scalable systems.

$151k - $309k

LangChain is seeking an experienced frontend engineer to develop and enhance new features on LangSmith, their enterprise platform for LLM application observability, testing, and debugging. This role is crucial for building the foundation of agent engineering in the real world, helping developers move from prototypes to production-ready AI agents. The LangSmith team owns and builds the core platform for observability, evaluation, and production reliability of AI systems, from tracing and annotation to run rules and evaluations.

$170k - $235k

This role is for experienced software engineers looking to build AI-powered products. You will own user-facing surfaces end-to-end, from interaction design and frontend development to application logic, APIs, data models, and the underlying search or model calls. The team continuously ships to production, with new engineers often having code in front of users within their first week. You will leverage AI, including agents and coding models, as primary tools to accelerate development and improve product quality, focusing on reliability, latency, and craft. This is a full-stack position that suits individuals who enjoy building and have the autonomy to do so, with a focus on turning ambiguous product ideas into working prototypes and iterating based on usage data and evaluations.

$180k - $270k

Commure is building the AI Operating System for healthcare, aiming to transform the industry's administrative burden. Their platform encompasses Ambient AI, Dictation, intelligent Agents, and autonomous Revenue Cycle Management (RCM) on a single AI-native platform integrated with numerous EHRs. The company's impact is significant, serving over 500,000 clinicians and handling billions in annual claims, backed by substantial funding and market recognition. The team operates with a direct connection to clinicians, ensuring immediate impact and a fast-paced, ownership-driven development cycle. This role is for an innovative Full Stack Engineer who can contribute to new solutions, scale features, and elevate engineering practices within a dynamic environment.

$130k - $180k

Sierra is seeking a Software Engineer to join its Financial Services team, focusing on building customer-facing AI agents for major brands. This role involves designing, delivering, and iterating on production-grade AI agents that are mission-critical and drive revenue. You will own the Agent Development Life Cycle (ADLC) from pilot to deployment, working directly with enterprise clients and startups to solve complex business challenges. Your work will directly influence the evolution of Sierra's core platform, shaping the future of AI agent development. The team partners closely with financial institutions to transform customer experiences, making the industry more accessible, human, and affordable.

$180k - $390k

Sierra is a leading platform for customer-facing AI agents, partnering with major global brands to transform customer service and business growth. We are primarily an in-person company based in San Francisco, with a culture guided by values of Trust, Customer Obsession, Craftsmanship, Intensity, and a commitment to balancing family. Our Financial Services team works with systemically important banks, neobanks, and insurers, impacting millions of end customers and billions in economic activity. We build modern tools that address critical customer moments, making the financial industry more accessible, human, and affordable.

$180k - $390k

Arize AI is the leading AI & Agent Engineering observability and evaluation platform, empowering AI engineers to ship high-performing, reliable agents and applications. As the AI landscape shifts from traditional ML to generative AI and agentic systems, Arize ensures teams have the tools to monitor, troubleshoot, and improve AI in production. The Fullstack Engineering team builds both the highly scalable distributed services that power Arize's ML observability platform and the intuitive frontend applications that bring these capabilities to life, focusing on delivering robust features that help clients interpret, visualize, and monitor their AI and ML models across the entire stack.

$125k - $225k

Together AI

Together is seeking a Senior Product Engineer to join their central Product Engineering team, working closely with the Commerce engineering team. You will be responsible for the product UI for Together AI's critical user flows, including enterprise spend controls, governance, usage-based pricing, metering dashboards, payment management, and enterprise contract interfaces. This role requires a hands-on individual who can efficiently break down ambiguous tasks, deliver improvements quickly, and make pragmatic decisions to drive customer and revenue impact. You will collaborate with product, design, and backend engineers, leveraging strong product judgment to make UX decisions within established patterns.

$160k - $230k

Together AI

Together AI is seeking a full-stack engineer to join their Product Engineering team. This role focuses on enhancing the developer experience across their AI platform, including surfaces like Playground, Model Garden, and Fine-Tuning. The ideal candidate is motivated by shipping impactful features that users value, working across the entire product lifecycle from data models to user interfaces. This is a high-ownership position on a fast-moving team where individual contributions are highly visible and directly influence product direction.

$160k - $230k

Salesforce is seeking a Senior / Lead Software Engineer to join their Product Team. In this role, you will translate ambiguous product challenges into high-quality software, collaborating closely with product and design teams to define product direction, development, and success metrics. You will work on core customer workflows, from the user interface to the backend services and data models. A key aspect of this role involves integrating emerging AI capabilities into practical and reliable product experiences, ensuring these features are observable, testable, and maintainable. This position is ideal for someone who thrives on moving quickly from concept to implementation and iterating based on user feedback.

$149k - $314k