React Jobs

Sierra is seeking a Software Engineer to join our full-stack data team, focused on enhancing the intelligence of AI agents. You will build real-time pipelines, analytics products, and personalization systems that leverage millions of conversations to drive business outcomes. This role involves architecting and developing our core data platform for low-latency, large-scale data processing, including real-time eventing, ETL pipelines, and a data lakehouse. You will also develop systems for long-term agent memory, customer data platforms, and optimization loops to personalize agent interactions and improve business results. The ideal candidate is passionate about AI products and thrives in a high-autonomy environment.

$230k - $390k

We are seeking an Applied AI Engineer to build real-world AI applications, working across the full stack from backend services and retrieval pipelines to APIs and user-facing applications. This hands-on role is for someone who enjoys rapid experimentation with emerging technologies and taking ownership of projects from concept to production. You will collaborate closely with engineering and product teams, as well as customers and partners, to explore new use cases, develop reference applications, and showcase the capabilities of Pinecone's technology. The ideal candidate possesses strong full-stack engineering skills combined with practical experience in LLM-powered applications and agentic systems, comfortable with architecture discussions, production code, and prototyping.

$190k - $270k

Sierra is a leading platform for customer-facing AI agents, transforming how businesses serve customers and grow. We are seeking a Software Engineer to join our Horizon team, focusing on building advanced AI agents capable of complex, long-horizon tasks across multiple communication channels. This role involves developing core agent capabilities, creating reusable systems and abstractions, and shaping the future of our AI product. You will tackle technically challenging problems in orchestration, integrations, data, memory, and observability, translating validated solutions into durable product features.

$230k - $390k

We are seeking a visionary and hands-on Lead Machine Learning Engineer to join our Austin team. In this role, you will be the principal architect behind the next generation of our unified AI/ML platform, designing and building the infrastructure that powers everything from traditional predictive models to generative AI, large language models (LLMs), and autonomous agent frameworks. You will own the end-to-end technical strategy, blueprint, and execution of scalable backend services and data pipelines that support AI-driven applications across go-to-market, engineering, and product teams. Because our products are initiated and owned entirely within the team, you will drive the vision from initial requirements and system design to global deployment, optimization, and long-term evolutionary ownership.

Imbue is an AI company building a suite of open-source tools to make technology serve humans. We are creating a future where individuals own personal teams of AI agents that can be modified to their specific needs. Our projects include Studio, a custom digital HQ for building personalized software; Bouncer, a social media feed filter; and Sculptor, an interface for programmers to run coding agents in parallel. We are seeking a Product Engineer to shape our product and build 0-1 features, contributing to the overall product direction. This role involves building across the entire stack, understanding customer needs, and contributing to the product roadmap, making it ideal for individuals with founder aspirations.

$170k - $350k

We are seeking an experienced Staff Forward Deployed Engineer to join our team and help build the future of AI-powered software creation. This is a hands-on software engineering role where you will design, write, and ship production code, working directly with customers to translate ambitious ideas into real products. You will be a founding member of our Forward Deployed Engineering (FDE) function, helping to define its engineering standards, ways of working, and collaboration with product teams. This is a unique opportunity to scale a new discipline from scratch, solve novel AI problems, and shape a product and team while remaining deeply hands-on.

$199k - $325k

Nango is a developer infrastructure company providing API access for agents and apps, enabling AI applications to connect to the real world. We are a YC-backed company with multi-million ARR and a growing team. We are seeking Senior+ Full-Stack Engineers to join our core engineering team. This product engineering role involves taking features from customer conversations to shipped products, encompassing the API, runtime, and dashboard. As we sell to developers, our engineers play a direct role in shaping the product roadmap, specifications, and execution, owning product surfaces end-to-end and influencing Nango's evolution as more customers build agents.

$140k - $220k

The next generation of software will be built and shipped by agents, and Vercel is at the forefront of this revolution. As an engineer on the Agentic Infrastructure team, you will own the systems that power Vercel's build and deployment lifecycle at scale. This role requires a blend of product thinking and deep systems ownership, where you will be responsible for the design, reliability, and evolution of the platform. You will make critical decisions that impact performance, define best practices, and ensure the workflows that Vercel, its customers, and their agents depend on are fast, resilient, and secure. We are seeking engineers who are passionate about owning high-scale systems end-to-end, improving the developer and agent experience, and making a lasting impact on how modern software is built and delivered.

$196k - $294k

Parloa is at the forefront of a new era in customer experience, powered by agentic AI. We aim to make every customer conversation effortless, transforming support into meaningful exchanges. Our platform has already powered over a billion interactions for global enterprise brands. As a Senior Software Engineer, you will work on a marketplace of tools and integrations that enhance Parloa's AI agents, ensuring secure and scalable access to business systems. While experience with our specific stack is not required, a willingness to learn and code in Typescript is essential.

LangChain is seeking an Engineering Manager to lead the team responsible for building LangSmith, our observability and evaluation platform for LLM applications. This role involves defining the technical direction, mentoring a team of engineers, and collaborating with product and design to deliver features that empower developers to build and deploy trustworthy AI systems. You will foster a culture of collaboration, ownership, and technical excellence, ensuring the scalability and reliability of our platform. The position requires a strong technical background and a bias towards shipping quickly while learning from customers.

$220k - $270k

The QM & Coaching Team at Cresta is seeking a Senior Fullstack Engineer to play a key role in building and scaling the no-code platform that powers Cresta’s processing capabilities. This platform empowers non-technical users to configure conversation workflows and apply automation without writing code. You will work across the stack—from building intuitive UIs to robust backend services—enabling customers to unlock value from conversations quickly and flexibly. You’ll partner with designers, product managers, and AI/ML teams to turn complex requirements into delightful and performant product experiences, and help shape the future of our no-code architecture.

Bretton AI is seeking Product Engineers to transform complex customer challenges into elegant technical solutions. In this role, you will take ownership of significant features from their initial conception through to production. You will collaborate directly with customers to deeply understand their requirements, design scalable architectures, and deliver code that demonstrably enhances compliance operations. This position offers a blend of in-depth technical work and substantial customer impact, where you will develop systems processing thousands of cases, significantly reducing time for compliance teams and directly contributing to company revenue.

$200k - $270k

Salesforce is seeking a Software Engineering SMTS for the Brain Team, focusing on the intelligence layer behind their AI CRM product, Piper. This role involves building, maintaining, and upgrading AI agents that qualify leads and book meetings. You will work on system prompts, model configuration, context layers, evaluations, and the underlying harness that powers Piper. The position offers a high-ownership, high-velocity environment where engineers ship customer-facing AI products at scale, with end-to-end ownership from idea to production. You will collaborate with product and AI platform teams to develop features, enhance customer experiences, and build evaluation systems to ensure agent performance and business outcomes.

$149k - $224k

LangChain is seeking a Fullstack Engineer to join the LangSmith team, focusing on our commercial AI observability and evaluation platform. This role offers the chance to develop new features and functionality, collaborating closely with enterprise customers, developer end-users, and internal stakeholders. You will contribute to a product that is shaping the future of AI agents in the real world, leveraging a strong foundation in open-source tools and a rapidly growing platform.

$145k - $180k

Salesforce is seeking a highly skilled and experienced Lead Member of Technical Staff (LMTS) to provide technical leadership and full-stack expertise for the Page Builder platform. This role involves leading the architectural design, engineering roadmap, and development of enterprise-scale web capabilities that power salesforce.com. The LMTS will set engineering standards, foster technical excellence, drive AI-first workflow innovations, and mentor engineers. The team focuses on building and owning a content authoring and rendering platform for marketing pages, with a strong emphasis on frontend development, modular component libraries, and robust rendering for global audiences. This role is an opportunity to shape the future of AI integration within engineering workflows and contribute to a high-traffic digital ecosystem.

$173k - $260k

Simple AI is seeking founding software engineers to build the core systems behind their state-of-the-art voice AI agents for enterprise clients. This high-ownership role involves working across product to enhance agent speed, reliability, and capabilities in production environments. You will ship customer-facing features, optimize latency and reliability, develop internal tools, troubleshoot complex issues, and scale the platform to meet growing customer demand. Engineers collaborate closely with product and customers, requiring a fast-paced approach, ownership of system components, and a drive to build technology that directly impacts business revenue.

$130k - $280k

Simple AI is seeking an AI Agent Engineer to join their growing team and help build state-of-the-art voice AI agents for enterprise clients. This role involves working directly with customers to transform Simple's voice AI platform into production-ready agents tailored to each business's unique needs. You will engage in both pre-sales and post-sales activities, including creating custom demos, understanding customer workflows, deploying agents, debugging complex issues, enhancing performance, and translating customer feedback into product enhancements. This is a highly technical and customer-facing position for individuals who enjoy coding, interacting with clients, working at a fast pace, and seeing the direct business impact of their work.

$120k - $200k

Mem0 is building the memory layer for AI agents, enabling them to remember conversations, learn from interactions, and build context over time. We are a Y Combinator-backed company with significant funding, powering millions of AI interactions for enterprise customers and an open-source community. This full-time, onsite role in San Francisco, CA, offers a unique opportunity to own the AI product surface of the Mem0 Platform. You will be responsible for the end-to-end frontend development, setting the visual and interaction standards for our dashboard, playground, and documentation. Working directly with the CTO, research, and customers, you will translate complex memory problems into intuitive user interfaces, shipping AI products to real users.

$150k - $250k

Elastic, the Search AI Company, is seeking a hands-on Full-Stack Senior Software Engineer to join their IT Software Engineering team. This role is a 100% individual contributor position focused on developing internal enterprise-grade applications and AI-powered bots using the Elastic Stack. The team is adopting a "Build and Buy" strategy, leveraging custom solutions to replace third-party software. You will lead the technical design, development, and deployment of full-stack web applications and conversational AI bots, taking complete operational ownership of production systems.

$133k - $253k

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