Join our innovative team as a Frontend Engineer for the UI Platform at Cloudflare. In this pivotal role, you will be responsible for developing and enhancing our user interface components, ensuring a seamless experience for our clients. You will have the opportunity to collaborate with talented engineers and designers to shape the future of our platform.We value creativity and problem-solving skills, and we’re looking for passionate individuals who thrive in a dynamic environment. Your work will directly impact how our users interact with our services and contribute to the overall success of the company.

About AnthropicAt Anthropic, we are dedicated to developing advanced AI systems that are not only reliable and interpretable but also safe for our users and society at large. Our rapidly expanding team comprises passionate researchers, engineers, policy experts, and business leaders all collaborating to create beneficial AI solutions.Role Overview:As a pivotal member of our UI Platform team, you will contribute to Claude.ai, Anthropic's flagship consumer product, which encompasses web, mobile, desktop, and browser extensions. Your role will revolve around building the core infrastructure, components, APIs, and tooling that enable our product teams to deliver high-quality features swiftly and reliably.Your contributions will include designing and deploying shared components and design-system abstractions, enhancing the backend-for-frontend (BFF) APIs, and optimizing the build, deployment, and observability systems that ensure Claude.ai functions seamlessly across all platforms. The impact of your work will significantly accelerate innovation across teams while maintaining stability in user experiences.If you are passionate about enhancing developer experience and want your engineering contributions to multiply the impact across various features, this role is tailor-made for you.

Who We ArePostman is the premier API platform utilized by over 45 million developers and 500,000 organizations globally, including 98% of the Fortune 500. Our mission is to empower developers and professionals worldwide to create an API-first environment by simplifying every stage of the API lifecycle and enhancing collaboration, thereby enabling users to build superior APIs more swiftly.Headquartered in San Francisco, we also maintain offices in Boston, New York, Austin, Tokyo, London, and Bangalore—our city of origin. As a privately held company, we have secured investments from leading firms such as Battery Ventures, BOND, Coatue, CRV, Insight Partners, and Nexus Venture Partners. Discover more at postman.com or engage with us on X at @getpostman.P.S: We highly recommend exploring The "API-First World" graphic novel to gain insight into our broader vision at Postman.About the TeamThe Client Platform organization is dedicated to paving the way for building, testing, and deploying Postman’s web and desktop applications. We are responsible for frameworks, design systems, SDKs, build tools, and shared infrastructure that product engineers rely on daily. The UI Platform group is focused on developing reliable, accessible, and high-performance UI foundations that are used across Postman.The OpportunityAs a Senior Software Engineer on the Client Platform team, you will play a key role in shaping the front-end infrastructure that Postman depends on. This encompasses the design system and reusable components that enhance both web and desktop experiences. Your contributions will significantly impact how hundreds of engineers build, fostering consistency, performance, and an improved developer experience.This position involves hands-on work. You will create components, establish UI architecture, and collaborate with engineers and designers to transform concepts into scalable UI systems. In this role, you will advance the UX layer, enabling teams to deliver high-quality features without the need to reinvent core patterns.What You’ll DoEnhance front-end architecture, including component libraries, layout patterns, theming, and global UI behaviors.Develop specialized UI components as needed (e.g., editors, grids, structured data components) with a focus on performance and usability.Ensure components meet accessibility standards, keyboard interaction patterns, and internationalization/localization requirements.Assist product teams in embracing UI Platform components and patterns, offering guidance and identifying opportunities to simplify or expand the platform.

Join Our Innovative TeamAt OpenAI, our Applied team is at the forefront of making advanced technologies accessible and impactful. We have developed market-leading products such as ChatGPT, Sora, and the OpenAI API, which harness the power of models like GPT-5 and an expanding range of multimodal functionalities across text, image, audio, and video. Our team also oversees the robust infrastructure needed for large-scale inference, ensuring a seamless experience for users worldwide. As we continue to innovate, our influence in the tech landscape is on a significant upward trajectory.Our clients are transforming their businesses with our APIs, unlocking capabilities that were once thought to be beyond reach. ChatGPT and Sora are prime examples of the limitless possibilities we now offer in various content forms. With the growth of these capabilities, we remain committed to the responsible application of our technology, prioritizing thoughtful deployment over unchecked expansion.Within the Applied Engineering sector, our Financial Engineering team is dedicated to developing the frontend platforms and workflows that dictate how OpenAI’s products are priced, purchased, and managed at scale. We collaborate closely with Go-To-Market and Finance teams to distill complex commercial requirements into intuitive, reusable billing experiences. We invite a talented frontend engineer to join us in defining and enhancing these billing platforms, shaping the interfaces and components relied upon by our product teams as we adapt to evolving customer needs.Your Role and Responsibilities:Design and develop scalable, reusable UI components and patterns to address a diverse array of billing scenarios across our product suite.Collaborate closely with backend engineers to implement comprehensive billing capabilities encompassing subscriptions, usage-based pricing, and enterprise solutions.Create tools and interfaces that empower teams in Finance, Sales, Support, and GTM to efficiently manage and analyze billing data.Innovate AI-driven features for billing workflows and platform tools to automate repetitive tasks, generate insights, and enhance decision-making.Contribute to the definition of frontend architecture, standards, and patterns for a unified billing platform utilized across OpenAI.Work collaboratively with Product, Data, Finance, Go-To-Market, and Engineering teams to transform ambiguous requirements into clear, high-quality user interfaces.Ideal Candidate Profile:Proven software engineering experience, with a preference for expertise in payments, billing, or monetization.Strong proficiency in modern frontend technologies, frameworks, and best practices.Demonstrated ability to work collaboratively across cross-functional teams and manage stakeholder expectations.Passion for creating exceptional user experiences and a keen eye for detail.

At Drivetrain, we are dedicated to revolutionizing the way businesses approach financial planning and decision-making. Our innovative platform empowers companies to scale efficiently and meet their goals with confidence.Founded in 2021 by former Google engineers, Drivetrain operates as a remote-first organization with its headquarters in the San Francisco Bay Area. We're a rapidly growing startup backed by prominent venture capital firms, positioning ourselves for continued success. Remote-friendly: We gather top talent from around the world, providing them with autonomy and trust to excel in their roles. Open & transparent: We believe that access to information drives creativity and productivity, enabling our team to produce their best work. Idea-friendly: Our culture fosters innovation, allowing everyone to propose ideas and contribute to meaningful change. We celebrate the best ideas. Customer-centric: Our product-led growth strategy prioritizes learning from our customers, collaborating closely to build exceptional software.

About the RoleAt Descript, we are revolutionizing the way audio and video content is created and edited, ensuring that the process is swift, user-friendly, and accessible to everyone. Our innovative media editor leverages real-time collaboration, exceptional user experience, and advanced AI technology. This is the future of media!The Builder Experience (BIX) team is a pivotal part of Descript's platform, laying the groundwork for every product engineer. We manage the design system, essential UI frameworks, client performance, state management patterns, continuous integration, as well as the libraries and tools that maintain our codebase's health and enhance engineer productivity. If it involves the client shell, rendering pipeline, or cross-cutting frontend infrastructure, it's within our domain.We are seeking a passionate engineer, proficient in modern React, who thrives in frontend platform development and is motivated by the goal of enhancing the efficiency of our entire engineering organization. You will engage in hands-on systems work—such as performance tuning, dependency management, and the evolution of our design system—while also adopting a coaching and enablement approach to assist product teams in implementing improvements and elevating their skills.

About UsAt Finix, we are revolutionizing the way businesses interact with money. As a comprehensive full-stack acquirer processor, we empower organizations of all sizes with innovative and adaptable payment solutions. Annually processing billions in transactions, Finix enables SaaS, marketplace, and e-commerce platforms to effortlessly accept payments, manage payouts, and onboard merchants. Our suite of no-code, low-code, and developer-friendly tools allows businesses to launch in mere hours rather than months.With over $175 million raised, including a significant $75 million Series C round led by Acrew Capital and backed by notable investors such as Lightspeed Venture Partners, American Express Ventures, and Sequoia Capital, we are poised for growth.As a Senior Frontend Engineer on our Frontend Engineering Team, you will play a pivotal role in architecting and constructing the core payment experiences that empower thousands of businesses. You will be responsible for developing our extensive payments management dashboards and embeddable components that merchants integrate into their applications seamlessly.This position allows you to influence the technical vision for customer-facing products from inception through to production. You will lead design and implementation decisions, ensuring our payment interfaces remain high-performing, secure, and user-friendly as we scale. Our engineering team operates with a high degree of autonomy and ownership—each engineer makes impactful contributions that directly enhance customer success in a dynamic fintech landscape.Finix seeks engineers who possess excellent technical skills, a keen eye for detail, a passion for growth, and a dedication to delivering an outstanding customer experience.

About UsAt thesirius, we're powered by the backing of a16z Speedrun, dedicated to providing innovative solutions that drive growth for top consumer brands. Our advanced technology is relied upon by industry leaders such as Higgsfield and Promova. As we scale our operations, we are on the lookout for talented professionals who are passionate about making impactful contributions to consumer technology advancements. Join our vibrant team where initiative, ambition, and a commitment to excellence in problem-solving are highly valued.Position OverviewIn the role of Senior Frontend Engineer, you will be instrumental in the design, development, and maintenance of the user-facing elements of our core products. Your key responsibilities will include:Crafting and implementing robust, scalable, and user-centric interfaces that accommodate new features and shifting business requirements.Collaborating seamlessly with backend engineers, product managers, and design teams to deliver high-quality, integrated solutions.Providing technical guidance through best practices, mentoring fellow team members, and engaging actively in code reviews.Championing the adoption of contemporary frontend technologies, frameworks, and methodologies to guarantee product quality and maintainability.Identifying and addressing intricate technical challenges pertaining to user experience, performance, and security.Fostering a culture of continuous improvement and operational excellence within the engineering team.QualificationsA minimum of 5 years of professional experience in frontend development for high-traffic applications.Expertise in JavaScript/TypeScript and familiarity with modern frontend frameworks.Proven experience in integrating frontend applications with backend APIs and third-party services.Strong understanding of UI/UX principles, performance optimization, and frontend architecture.Excellent analytical skills with a track record of independently driving projects to successful completion.Full-time availability and a strong passion for contributing to a high-growth, ambitious environment.How to ApplyWe invite you to submit a brief introduction along with your resume for consideration.

About ApiphanyApiphany stands at the forefront of foundational AI technology for physical product development. Our mission is to empower innovators in industries such as automotive, aerospace, medtech, and energy to convert vast amounts of unstructured technical data into real-time, actionable insights. Supported by prominent investors from Markforged, Databricks, GM, and Character, we are dedicated to changing the landscape of engineering decision-making, transforming complexity into clarity for the world's leading manufacturers.Our sophisticated models are tailored to address the intricacies of engineering and manufacturing, comprehending principles of physics, design specifications, and program constraints. We are a tight-knit team of elite builders from top universities including Stanford, Berkeley, MIT, UW, and CMU, alongside industry leaders from GM, Ford, and Genesis Therapeutics. Our passion lies in revolutionizing hard-tech and collaboratively establishing a category-defining enterprise.About the RoleAs a Senior / Staff Frontend Engineer at Apiphany, you will play a crucial role in designing, building, and enhancing our state-of-the-art web application. You will be tasked with implementing high-quality UI components, developing the next generation of data visualization, ensuring optimal performance, and upholding best practices in frontend development.Your contributions will also include shaping the long-term frontend strategy, mentoring team members, and establishing engineering practices that will support the company's growth. You will work closely with design, backend, and machine learning engineers to transform massive data streams into intuitive and actionable insights for users, ensuring a seamless experience.

Example Org is a pioneering software company that facilitates real-time collaboration on critical workflows. Established in 2012, we proudly serve over 10,000 customers globally and are supported by exceptional investors, including Example Capital. Having successfully raised our Series C funding, we are currently valued at $750 million.As a Frontend Engineer at Example Org, you will be an integral part of our innovative team, reporting directly to the team manager. You will have a significant impact on various workflows, contributing to the overall success of our projects.

About Us:At LangChain, we are dedicated to making intelligent agents a common part of everyday technology. Our goal is to provide a robust foundation for agent engineering that empowers developers to transition from prototypes to production-ready AI agents that teams can depend on. Initially starting as a widely embraced open-source toolset, we have expanded our offerings to include a comprehensive platform for the building, evaluating, deploying, and managing of agents at scale.Currently, our tools—LangChain, LangGraph, LangSmith, and Agent Builder—are utilized by teams developing real AI products in both startups and large enterprises. Millions of developers rely on LangChain to power AI initiatives at notable companies such as Replit, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, and 35% of the Fortune 500.Having secured $125M in Series B funding from leading investors like IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we are in an exciting phase of product development and rapid growth, where every team member has a substantial impact on our projects and collaborative efforts. At LangChain, your contributions will play a crucial role in shaping how this technology manifests in the real world.About the Role:This position requires in-person attendance 5 days a week in San Francisco, CA, as well as options in New York and Boston.We are seeking a seasoned frontend engineer to innovate and improve features on LangSmith, our enterprise platform designed for LLM application observability, testing, and debugging.What You Will Do:Create new user-facing features utilizing React and TypeScript.Develop reusable components and front-end libraries for future projects.Convert designs and wireframes into high-quality, maintainable code.Optimize components for peak performance across diverse web-capable devices and browsers.Collaborate with fullstack and backend developers as well as UX/UI designers to enhance usability and experience.You’re a Good Fit If You Have:Extensive frontend engineering experience, with strong command of React, JavaScript, and TypeScript.Practical experience with frontend development tools such as Babel, Vite, Webpack, NPM, and Yarn.Familiarity with REST APIs and experience collaborating closely with fullstack and backend developers.

About UsAt doss, we are pioneering the future of operational intelligence with our innovative platform—a 'Terraform for operators.' Our AI-generated schema layer powers a customizable data warehouse, enabling companies dealing with physical goods to adapt their record systems in real-time as their business landscape evolves.Imagine leveraging AI foundation models for seamless schema migrations, enjoying real-time observability across operational and financial data, and managing intricate git versioning of schema and data modifications—all while developing workflows akin to infrastructure code.Your RoleDesign and implement the core frontend for our collaborative cloud platform.Take ownership of the technical roadmap for features related to customer-facing experiences.Develop adaptable infrastructure and components that scale in a composable software environment (think tools akin to Retool, Airtable, Zapier, Figma, and Notion).Your ExpertiseAbility to initiate projects from scratch in ambiguous settings.Proficient in Typescript, React, NextJS, and Tailwind CSS.Knowledgeable in GraphQL, Postgres, ORMs, and Node (Express).Competent in utilizing internal APIs to create complex frontend interfaces and components.Skilled in translating intricate Figma UI/UX designs into flawless browser implementations.Your AttributesCollaborative Spirit: You bring enthusiasm, openness, and curiosity to the team every day.Growth-Oriented: You view every experience as an opportunity to learn and uplift the team and company.Dedication to Quality: You take pride in creating high-quality products.Customer-Centric: You are deeply invested in enhancing the customer experience and delivering delightful products.Pragmatic Thinker: You make decisions based on practicality rather than theory.Humble: You thrive in a collaborative atmosphere where everyone contributes to the team’s success.Our BenefitsComprehensive medical, dental, and vision insurance.Unlimited Paid Time Off (PTO) along with mandatory US holidays.401(k) plan with immediate eligibility.Fitness stipends and wellness programs.

Who We AreAt doss, we are innovating the landscape for operators by developing the "Terraform for operators"—an AI-driven schema layer that powers a white-labeled data warehouse. Our solution empowers physical goods companies to adapt their systems of record as swiftly as their business needs evolve.Imagine a world where AI foundational models facilitate schema migrations, delivering real-time observability across operational and financial data, managing complex git versioning for schema and data changes, and enabling workflows that can be composed like infrastructure code.Your ResponsibilitiesCollaborate closely with design teams and fellow engineers to deliver rapid, intuitive web browser experiences.Contribute to the technical roadmap and prioritize features enhancing the customer-facing experience.Design and implement flexible infrastructure and components that scale within a composable software environment, similar to tools like Retool, Airtable, Zapier, Figma, and Notion.Your SkillsAbility to navigate from concept to execution in ambiguous environments.Proficient in Typescript, React, NextJS, and Tailwind.Familiarity with GraphQL, Postgres, ORMs, and Node (Express).Experience in utilizing internal APIs to create complex front-end interfaces and components.Expertise in translating intricate Figma UI/UX designs into flawless implementations.About YouTeam Player: You bring enthusiasm, openness, and curiosity to the team every day.Growth Mindset: You view every challenge as an opportunity for personal and team development.Craftsmanship: You take pride in delivering high-quality work.Customer-First Attitude: You are deeply invested in enhancing customer experience.Pragmatic Approach: You make decisions based on circumstances rather than theory.Low Ego: You thrive in collaborative environments where teamwork is paramount.Benefits We OfferComprehensive medical, dental, and vision insurance.Unlimited Paid Time Off (PTO) along with mandatory US holidays.401(k) plan with immediate eligibility for participation.

Join Us in Building a Safer World.At TRM Labs, we leverage blockchain analytics and AI solutions to empower law enforcement, national security agencies, financial institutions, and cryptocurrency businesses in their quest to detect, investigate, and thwart crypto-related fraud and financial crime. Our advanced platforms provide the intelligence needed to trace funds, identify illicit activities, build strong cases, and offer a comprehensive view of emerging threats. Trusted by top-tier agencies and businesses globally, TRM is committed to fostering a safer and more secure world for everyone.We are seeking a talented Senior Frontend Platform Engineer to become a pivotal part of our dynamic Frontend Engineering team. This small yet agile team is dedicated to developing the visualization and rendering systems that drive TRM’s investigative platform. Your work will enable users to navigate complex blockchain activities through interactive graph exploration, entity networks, and data-rich investigative interfaces. In this influential role, you will contribute to the core frontend platform and visualization infrastructure, facilitating analysts in exploring extensive relational datasets and identifying illicit activities on a large scale. As a key early team member, you will focus on high-performance rendering systems, graph visualization, and reusable frontend infrastructure that supports TRM’s investigative workflows.Your Impact:Design and implement the visualization platform that powers TRM’s investigative interfaces, including graph exploration and large-scale data visualization.Develop high-performance rendering systems utilizing technologies such as Canvas, WebGL, and GPU-accelerated rendering to visualize intricate datasets.Create reusable visualization libraries, SDKs, and platform primitives that empower teams across TRM to craft robust data exploration experiences.Engage in technical design discussions and code reviews to enhance architecture, performance, and maintainability.Deepen your understanding of crypto and blockchain investigation workflows to guide product design and platform capabilities.Shape the future of data exploration tools used by investigators and financial institutions worldwide.Qualifications:Proficient in JavaScript and TypeScript with a strong background in building large-scale frontend systems.Experience in developing data-dense web applications, such as analytics platforms and visualization tools.

About SimSim is at the forefront of creating the premier platform for AI agents, empowering developers and enterprises to visually design, deploy, and oversee high-performing agents that streamline workflows globally. Our vision is clear: AI agents will revolutionize how the world operates, and Sim is the key to making that a reality. With backing from renowned investors such as Standard Capital, Paul Graham, Perplexity, SV Angel, and Y Combinator, we have embraced open-source principles from our inception.Based in San Francisco, we are a dynamic, agile team that collaborates in person daily. With over 70,000 developers leveraging Sim, your contributions reach real users quickly and significantly. We value ownership, excellence, and the ambition of our builders as they shape the future from the ground up.Role OverviewAs a Frontend Software Engineer at Sim, you will be pivotal in developing our agent-building canvas and frontend platform. You will design intuitive user experiences, create robust and high-performance UI components, and help shape how thousands of developers utilize Sim. Collaborating with engineering, product, and design teams, you will take features from concept to production, directly influencing our product’s design, performance, and developer experience.Your ResponsibilitiesDesign and develop essential frontend systems focusing on visual, interactive experiences that enable users to create and manage AI agents.Lead the rollout of new features, UI components, and real-time interactions within a Next.js monorepo.Ensure the frontend experience is efficient, refined, and enjoyable at scale.Establish standards for front-end code, UI architecture, and design systems.Work closely with engineering, design, and product teams to create seamless developer workflows.Enhance our custom component library and expand our existing design system.Rapidly prototype and iterate, delivering impactful improvements daily.What We SeekExtensive experience with React and TypeScript.Strong understanding of UI/UX design principles and developer experience.Demonstrated capability to build sophisticated, interactive frontend applications (e.g., canvas editors, visual builders, collaborative tools).Knowledge of frontend performance, animations, and real-time systems (e.g., WebSockets, CRDTs).A proactive approach to problem-solving and a passion for technology.

Join Mindlance as a Lead Frontend Engineer and take the next step in your career by leading innovative frontend development projects. We are looking for a creative and driven individual who excels in building user-friendly interfaces and enjoys collaborating with cross-functional teams. You will be responsible for designing and implementing high-quality web applications, optimizing performance, and ensuring a seamless user experience.

About Resolve AIAt Resolve AI, we revolutionize software maintenance and production troubleshooting by developing an autonomous AI Production Engineer capable of diagnosing and resolving intricate system issues from start to finish.Our visionary founders, Spiros Xanthos and Mayank Agarwal, were instrumental in creating OpenTelemetry and have successfully led Splunk Observability, achieving two lucrative exits to Splunk and VMware.We are proud to have secured over $150 million in funding from elite investors such as Lightspeed, Greylock, and Unusual Ventures, alongside notable individual supporters including Jeff Dean (Chief Scientist, Google DeepMind), Thomas Dohmke (CEO, GitHub), Matt Garman (CEO, AWS), Reid Hoffman (Founder, LinkedIn), and Fei-Fei Li (Professor, Stanford).What You Will Be DoingOwn Frontend Design and ImplementationTake charge of delivering an exceptional user experience across Resolve AI's product suite by developing engaging, intuitive, and high-performance interfaces utilizing TypeScript, React, and cutting-edge frontend technologies.Shape Product VisionTransform complex AI capabilities and systems into user-friendly features that empower engineers to seamlessly interact with our AI agent, simplifying powerful workflows.Maintain High Standards of PerformanceCraft scalable frontend architectures that are not only maintainable but also responsive and performant, especially for data-rich visualizations and real-time applications.Collaborate with Users in MindEngage closely with backend engineers, designers, and product managers to drive product discussions and advocate for user-centric solutions that address genuine pain points.Rapid and Responsible IterationQuickly prototype new features and integrate user feedback through tight development cycles, ensuring UI quality through comprehensive testing, accessibility standards, and component reuse.Your Qualifications5+ years of software development experienceExpertise in TypeScript and React, with a strong understanding of modern frontend frameworks and tooling.Proven track record of designing and implementing scalable frontend systems.

Join our dynamic team at Midstream as a Frontend Software Engineer. In this role, you will leverage your technical expertise to design and implement innovative web applications that enhance user experience. You will collaborate with cross-functional teams to deliver high-quality software solutions that meet our clients' needs.

About FernAt Fern, we empower software companies to deliver exceptional API experiences. Our clientele includes renowned firms like Nvidia, Square, and Twilio, alongside innovative AI startups such as ElevenLabs and OpenRouter.As we look to the future, the majority of API integrations will be handled by AI agents. These agents require clearly defined schemas, structured endpoints, deterministic contracts, and concise documentation that can seamlessly integrate into their workflows.Our team, comprised of top-tier talent from Google, Palantir, Amazon, and Uber, thrives in a dynamic environment in Williamsburg, Brooklyn. With our recent acquisition by Postman, we now have access to 40 million users and 98% of the Fortune 500, while retaining our agile startup ethos.About the RoleAs a Frontend Software Engineer at Fern, you will create the interfaces that shape how developers and agents interact with APIs.Craft Exceptional Developer Interfaces: Develop sleek, responsive web experiences utilizing TypeScript and Next.js. Design documentation, dashboards, and tools that simplify complex API interactions.Focus on Performance and Quality: Deliver frontend solutions that are fast, dependable, and visually stunning. You will take ownership of architectural choices and the finer details that elevate our products. Discover how we leverage Vercel and Next.js for efficient multi-tenancy and expedited development cycles.Engage with Customers: Collaborate directly with API teams from industry giants like Nvidia, Twilio, and Square. You will troubleshoot real-world production challenges, refine APIs based on user insights, and implement enhancements swiftly.