React Developer Jobs

A World-Changing Company Palantir builds the world’s leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more. The Role Are you passionate about engineering quality, performance, and increasing the impact of engineers around you? Software Engineers at Palantir build software at scale to transform how organizations around the world use data. As an engineer within Palantir’s Foundations organization, you’ll have the opportunity to grow more quickly than you ever imagined, as you build the shared infrastructure that underpins the Palantir Foundry, Palantir Gotham, and Palantir Apollo platforms, and drive investments to improve the velocity and quality of our engineering. Teams within Palantir’s Foundations organization are made up of a small number of engineers, each focused on one of four major categories of our infrastructure: • Backend Infrastructure: Maximizes the productivity of our backend developers and ensures Palantir’s platforms have performant and consistent RESTful services. Think: making the “easy way” the “right way” when developing backend services, including designing infrastructure to build hundreds of micro-service repos performantly, or to ensure we keep reliable audit logs of everything users do in our platforms. • Developer Infrastructure: Operates the systems and services that underpin all aspects of our developer ecosystem, including off-the-shelf tooling like GitHub and custom tooling for managing automated changes across hundreds of repositories. • Frontend Infrastructure: Maximizes frontend developer productivity across the entire frontend development stack, from the developer experience in the IDE to the final user experience in the browser. Think: the core infrastructure required to develop and serve our frontends (including features flags, int

About Ema Ema is building the world’s leading Agentic AI platform to transform enterprise productivity. We enable organizations to delegate repetitive tasks to Ema, the Universal AI Employee, delivering 10x gains in workforce efficiency, across functions. Founded by former executives from Google, Coinbase, Flipkart, and Okta, our team includes engineers from premier tech companies and graduates of Stanford, MIT, UC Berkeley, CMU, and IITs. We are backed by industry leading investors including Accel, Naspers/Prosus, Section32, and angels like Sheryl Sandberg and Dustin Moskovitz. Headquartered in Silicon Valley and with offices in London, Bangalore and Vancouver, Ema is at the frontier of what Agentic AI can do in production — we ship real systems that run real business processes at scale. Who are you? We are seeking an experienced Enterprise Software Engineer to join the Ema team. As an Enterprise Software Engineer, you will be responsible for designing, developing, and maintaining our enterprise software applications. You will work with a cross-functional team of product managers, designers, and developers to deliver high-quality software solutions that meet the needs of our enterprise clients. The ideal candidate has experience building products across the stack and a firm understanding of web frameworks, APIs, databases, and multiple back-end languages. Most importantly, you are excited to be part of a mission-oriented, fast-paced, high-growth startup that can create a lasting impact. You will: Develop and maintain enterprise software applications, including API, data, application, and service development Write clean, efficient, and maintainable code by employing test-driven development process. Build scalable and reliable back-end systems using languages like Go and Python Develop and maintain APIs using REST or GraphQL Integrate multiple enterprise applications and services using a scalable framework like FastAPI Build and maintain data schema using PostgreSQL,

P-160 Who We Are Our GenAI observability and quality product provides advanced monitoring and insights for GenAI systems, giving customers real-time visibility into their system's performance, along with a suite of tools to improve the quality of the GenAI systems. With features like real-time alerts, detailed logging, and anomaly detection, customers can quickly identify and fix issues that affect the quality of their GenAI systems. This is a great opportunity to use next-gen tools for continuous monitoring, testing, and feedback, while applying cutting-edge technologies like AutoML/AutoRag, LLM fine-tuning, Prompt Optimization and Automation to improve the performance and quality of GenAI systems. We are looking for a passionate and experienced Senior Full-Stack Software Engineer to join our dynamic team. This role will offer you the opportunity to contribute to both the front-end and back-end development of our product, while also allowing you to bring your strong product sense and UI/UX design expertise to life. The ideal candidate will have a solid track record in full-stack development, with the ability to design and implement intuitive and engaging user interfaces, as well as architect scalable and efficient backend systems. What You’ll Do Full-Stack Development : Design, develop, and maintain both front-end and back-end components of our web applications. UI/UX Design : Collaborate with design teams to create visually appealing, user-friendly, and accessible UI/UX. You’ll ensure the product provides a seamless experience from end to end. Backend API Development : Architect, design, and implement RESTful APIs and microservices to support the application. Collaboration & Mentorship : Work closely with cross-functional teams including product managers, designers, and other engineers. Mentor junior developers and share knowledge of best practices in both UI/UX and back-end development. Product Sense : Contribute to product strategy by offering insights

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. Senior Software Engineer Get to know Okta Okta is The World’s Identity Company. We free everyone to safely use any technology, anywhere, on any device or app. Our flexible and neutral products, Okta Platform and Auth0 Platform, provide secure access, authentication, and automation, placing identity at the core of business security and growth. At Okta, we celebrate a variety of perspectives and experiences. We are not looking for someone who checks every single box - we’re looking for lifelong learners and people who can make us better with their unique experiences. Join our team! We’re building a world where Identity belongs to you.. Auth0 Auth0 is an easy to implement authentication and authorization platform designed by developers for developers. We make access to applications safe, secure, and seamless for the more than 100 million daily logins around the world. Our modern approach to identity enables this Tier 0 global service to deliver conve

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Available Locations Austin, US New York, US San Francisco, US About the Role Cloudflare's Developer Platform (Workers, Pages, R2, D1, Durable Objects, AI, and more) is how the next generation of builders ships to the global Internet. Events are one of the most powerful levers we have to reach developers where they are — and to create the moments that turn curiosity into conviction. We're looking for a Director of Developer Events to own the end-to

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. About the Team Authentication tells you who someone is. Authorization decides what they can do, and doing that well at scale is hard. Role-based access breaks down as applications grow, and AI agents are changing who, and what, asks for access. Auth0 FGA solves this with fine-grained authorization. Its engine is OpenFGA, a CNCF incubating open source project that Okta maintains with contributors from other companies, and Auth0 FGA runs that same engine as a managed service. FGA DevEx owns how developers experience both: our SDKs, CLI, IDE plugins, Helm charts and docs, all developed in the open. The FGA group owns its product end to end, from infrastructure to docs, so we move quickly and see our work reach developers. Our guiding principle: one developer experience, many deployment models. About the role We're hiring a Staff Engineer to set the technical direction for everything the team owns, and to mentor the senior engineers who build it, starting with our SDKs in Go, JavaScript, .NET, Python, Java and more. From there, you'll shape where the developer experience goes next, from how our SDKs evolve to new surfaces like MCP servers. You'll partner with the Core team on API design, so every new capability feels natural in each language. This is an individual contributor role. You'll work closely with the engineering manager, who owns people and delivery Responsibilities Set the direction: Define and drive the technical direction for FGA DevEx

Synthesia is the world’s leading AI video platform for business, used by over 90% of the Fortune 100. Founded in 2017, the company is headquartered in London, with offices and teams across Europe and the US. As AI continues to shape the way we live and work, Synthesia develops products to enhance visual communication and enterprise skill development, helping people work better and stay at the center of successful organizations. Following our recent Series E funding round, where we raised $200 million, our valuation stands at $4 billion. Our total funding exceeds $530 million from premier investors including Accel, NVentures (Nvidia's VC arm), Kleiner Perkins, GV, and Evantic Capital, alongside the founders and operators of Stripe, Datadog, Miro, and Webflow. About The Role Synthesia is the #1 Enterprise AI video generation since 2016, and today we work with 90% of the Fortune 100. Our core product, Studio, lets anyone turn a script into a polished video with an AI avatar, no camera or crew required. Now we're entering a new chapter, and the API is at the center of it. Our Interactive Avatar API lets any company build real-time, conversational avatars directly into their own products. You're the first product marketing hire dedicated to the API, and you'll build the GTM motion from scratch. There's no playbook here yet. You'll set the foundational positioning, write the developer-facing messaging, stand up the launch process, and figure out how we reach developers and win them. Requirements You get energy from building from scratch, and have a hacker mentality. You use gen AI video tools and created content with them. You're in every new model the week it drops. You've built with APIs yourself: called endpoints, read the code samples, wired up a webhook, shipped something small. You know how developers actually integrate and ship. You've done product marketing, growth, or developer marketing for enterprise audiences. You're an excellent communicator, written and spok

About the Team OpenAI’s mission is to ensure the responsible and widespread adoption of artificial intelligence. In support of that mission, the Marketing team helps deeply understand customer audiences and market dynamics, influence the development of the right products, build sustainable and customer-aligned monetization models, and drive awareness, adoption, and usage across OpenAI’s products and platform. We take a data-driven approach to understand markets, develop monetization strategies, and uncover customer needs that shape product strategy and messaging. We partner closely with Sales, Partnerships, Product, Engineering, Research, Comms, and Design to deliver a cohesive end-to-end customer experience and lead go-to-market efforts for new product launches across channels. About the Role As a Product Marketing Manager, Research & Safety , you will shape how the world understands OpenAI’s frontier research and our approach to developing AI responsibly. You will establish the strategic narrative for some of the company’s most important research themes—including frontier capabilities, safety, preparedness, reasoning, and compute—and translate complex technical work into clear, credible stories for researchers, policymakers, and the broader public, working with cross-functional teams to translate that messaging and reach developers and enterprise. Working closely with Research, Safety Systems, Policy, Communications, and Product teams, you’ll lead the go-to-market strategy and messaging for major research and safety initiatives. You’ll develop narratives that build trust, translating technical concepts into tangible artifacts and messaging, drive industry understanding of emerging evaluation frameworks, and help communicate OpenAI’s unique perspective on responsible frontier AI development. You’ll also identify creative and non-traditional ways to bring these stories to the audiences that matter most. In this role, you will: Establish the strategic narrative f

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. About the Team Authentication tells you who someone is. Authorization decides what they can do, and doing that well at scale is hard. Role-based access breaks down as applications grow, and AI agents are changing who, and what, asks for access. Auth0 FGA solves this with fine-grained authorization. Its engine is OpenFGA, a CNCF incubating open source project that Okta maintains with contributors from other companies, and Auth0 FGA runs that same engine as a managed service. FGA DevEx owns how developers experience both: our SDKs, CLI, IDE plugins, Helm charts and docs, all developed in the open. The FGA group owns its product end to end, from infrastructure to docs, so we move quickly and see our work reach developers. Our guiding principle: one developer experience, many deployment models. About the role We're hiring a Staff Engineer to set the technical direction for everything the team owns, and to mentor the senior engineers who build it, starting with our SDKs in Go, JavaScript, .NET, Python, Java and more. From there, you'll shape where the developer experience goes next, from how our SDKs evolve to new surfaces like MCP servers. You'll partner with the Core team on API design, so every new capability feels natural in each language. This is an individual contributor role. You'll work closely with the engineering manager, who owns people and delivery Responsibilities Set the direction: Define and drive the technical direction for FGA DevEx

About Supabase Supabase is the Postgres development platform, built by developers for developers. We provide a complete backend solution including Database, Auth, Storage, Edge Functions, Realtime, and Vector Search. All services are deeply integrated and designed for growth. About the Role We're looking for a SDK Engineer - Python to join our SDK team and own how developers talk to Supabase from Python. You'll work closely with the rest of the SDK team, our Auth, Realtime, Storage, PostgREST, Functions, CLI and Docs teams, and the open-source community, helping us make the Python SDK a library Python developers genuinely enjoy using. Python developers reach Supabase from backend services, data pipelines, notebooks, and a growing number of AI agents and agent frameworks. The Python SDK is how all of them talk to the platform: database queries, auth, storage, realtime and edge functions, in both sync and async flavors. This is a library-authoring role, and the work happens in the open: public repos, public issue trackers, and API decisions whose consequences last for years. If you get satisfaction from a type checker that catches the bug before your users do, from an async client that cleans up after itself, and from an issue tracker that isn't a graveyard, you'll like it here. This role is ideal for someone who thrives in async, fast-paced environments and is excited about building developer tools that scale to millions. What You'll Be Responsible For Build and evolve our Python SDK across database, auth, storage, realtime and functions, with both sync and async APIs that feel natural in Python. Start new things. Alongside the maintenance work, find what's missing, make the case for it, and build it. Nobody will hand you the list. Work in the open. Triage inbound issues, review and shepherd outside contributions, keep CI and release automation healthy, and hold a clear, kind line on scope. Own the typing experience. Make the SDK fully typed and checker-friendly, so

About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world's largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. About the team Growth Marketing is a team of performance-driven marketers and channel specialists. We partner closely with growth, creative, analytics and regional marketing to drive revenue through self-serve and sales motions. We work globally, across all Stripe offerings and with all company segments — from startups to the largest enterprises. What you'll do As a China Growth Marketer, you will own launching, proving out, and scaling paid media and growth marketing channels for the Chinese market. This is a 0-to-1 role: you'll identify the right channels, build the playbooks, and demonstrate what works before scaling investment. You'll work across paid channels native to China (WeChat, Baidu, Douyin, Xiaohongshu, Zhihu, Bilibili, and others), as well as broader growth marketing levers like web optimization, content distribution, and landing page localization for Chinese users. You will be the in-house expert on how to reach Chinese developers, founders, and business operators through digital channels, bringing deep knowledge of the local ecosystem, platform mechanics, regulatory environment, and user behavior. You'll partner cross-functionally with regional marketing, analytics, creative, product marketing, and sales to ensure paid media supports Stripe's growth objectives in China. Responsibilities Launch and scale paid media channels specific to the China market — including WeChat Ads, Baidu SEM, Douyin/Ocean Engine, Xiaohongshu, Zhihu, Bilibili, an

About the Team: OpenAI's mission is to ensure that artificial general intelligence (AGI) benefits all of humanity. Our API is the industry's most widely adopted AI platform, empowering startups, indie developers, and Fortune 500 companies alike. Through multimodal APIs, we enable users to harness the full potential of diverse AI modalities effectively and at scale. About the Role: We are seeking an Engineering Manager to lead our multimodal API product suite. Your team will be responsible for delivering innovative APIs across real-time multimodal interactions and image generation. You will own the product roadmap for how we evolve our multimodal API offerings, and you will build the products that allow developers to reach millions of end users through AI audio, video, and images. In this role, you will: Build, mentor, and grow a high-performing engineering team focused on multimodal API products—including image generation and Live API . Collaborate closely with product managers, designers, and other stakeholders to define the strategic vision and product roadmap. Work closely with our research teams to improve our core multimodal models for API customer use cases. Guide technical and architectural decisions, emphasizing scalability, robustness, and user experience. Foster a culture of innovation, continuous improvement, and accountability within your team. Qualifications: Proven experience managing engineering teams that deliver complex, high-quality products at scale. Strong technical background and proficiency in modern software engineering practices and system architecture. Excellent collaboration and communication skills to effectively coordinate across diverse teams and stakeholders. Familiarity with or strong interest in multimodal AI, including speech technologies, real-time systems, and image generation. Ability to operate effectively in a fast-paced, ambiguous startup environment. Preferred Qualifications: Experience developing multimodal systems or APIs in

About us We were founded in 2017 with the motivation to reach people globally by giving them unique and unforgettable experiences with disruptive products. Our games have reached over 3.5 billion people. This could only be done by gathering exceptional talent and creating a culture to enhance team spirit and creativity. We are looking for passionate teammates to join our team. What you’ll be doing Building high-quality hybrid-casual games Maintaining and optimizing hybrid-casual games Close collaboration with other developers Desired skills and experiences University degree in Computer Science or any equivalent department Familiarity with the Unity game engine and C# Strong problem-solving and communication skills Sound engineering skills and programming fundamentals Passion for Match Villains Experience with hybrid-casual games is preferred What makes our team so unique Feedback and transparency are at the heart of everything we do Exceptional and passionate people/team members Every idea counts Never-ending learning We never stop asking the questions “why” and “how” Our Perks Team events and trips Great food On-site gym Full health benefits Compensation for paid military service Relocation support Good Job Games Coin Program that lets you have unforgettable experiences (e.g. Going on a cruise trip to Norway or seeing the Northern Lights) This is an on-site role in Istanbul, Sarıyer. We do not offer a fully-remote working option.

About us We were founded in 2017 with the motivation to reach people globally by giving them unique and unforgettable experiences with disruptive products. Our games have reached over 3.5 billion people. This could only be done by gathering exceptional talent and creating a culture to enhance team spirit and creativity. We are looking for a Game Developer to bring innovative game ideas to life and shape the gameplay experience of new mobile games. What you’ll be doing Developing high-quality mobile games from scratch Prototyping and implementing new game concepts and mechanics Close collaboration with other developers Desired skills and experiences University degree in Computer Science or any equivalent department Familiarity with the Unity game engine and C# Strong problem-solving and communication skills Sound engineering skills and programming fundamentals Passion for Match Villains Experience with mobile games is preferred What makes our team so unique Feedback and transparency are at the heart of everything we do Exceptional and passionate people/team members Every idea counts Never-ending learning We never stop asking the questions “why” and “how” Our Perks Team events and trips Great food On-site gym Full health benefits Compensation for paid military service Relocation support Good Job Games Coin Program that lets you have unforgettable experiences (e.g. Going on a cruise trip to Norway or seeing the Northern Lights) This is an on-site role in Istanbul, Sarıyer. We do not offer a fully-remote working option.

About us We were founded in 2017 with the motivation to reach people globally by giving them unique and unforgettable experiences with disruptive products. Our games have reached over 3.5 billion people. This could only be done by gathering exceptional talent and creating a culture to enhance team spirit and creativity. We are looking for passionate teammates to join our team. What you’ll be doing Building high-quality games for the millions of mobile players Designing and implementing new features Maintaining and optimizing games Close collaboration with other developers Actively contributing to game design, feature design Desired skills and experiences B.S. or higher preferably in Computer Science or an equivalent program Experience with the Unity game engine and C# Strong problem-solving and communication skills Experience with version control systems such as Plastic or Git Passion for Match Villains and mobile puzzle games in general What makes our team so unique Feedback and transparency are at the heart of everything we do Exceptional and passionate people/team members Every idea counts Never-ending learning We never stop asking the questions “why” and “how”. Our Perks Team events and trips Great food On-site gym Full health benefits Compensation for paid military service Relocation support Good Job Games Coin Program that lets you have unforgettable experiences (e.g. Going on a cruise trip to Norway or seeing the Northern Lights) This is an on-site role in Istanbul, Sarıyer. We do not offer a fully-remote working option.