React jobs in New York

Simplex seeks a Senior Engineer in New York City to strengthen core platform services and user-facing features. The role emphasizes building with a long-term view, writing clean, scalable code, and delivering observable systems in a fintech-enabled environment. You will work onsite in Flatiron, coll

What you’ll do Maintain the core: agent orchestration + document pipelines + versioning Ship end-to-end: Go backend + React UI (you’ll touch everything) Make it reliable: evals, guardrails, observability (no demo-only systems) Turn customer pain into product fast (you’ll talk to users) What We Care

Who We Are Baton Corporation is the development company that builds and operates the entire technology stack behind pump.fun, the largest memecoin launchpad in production today. The systems are low latency, high throughput, live under constant load, and break if you get them wrong. What You’ll Do As

Lead the development of mobile applications using React Native for cross-platform apps on iOS and Android. Establish and enforce best practices, coding standards, and design patterns for mobile app development. Provide technical guidance to team members and mentor junior developers to improve their

A leading AI productivity tools company is seeking a skilled developer to build next-generation presentation tools. You will create features that turn text prompts into beautiful, ready-to-present slides using AI, while architecting a scalable product. The ideal candidate has over 5 years of experie

We are looking for Dot Net Developers with hands‑on experience in web development projects (C#, ASP.Net, MVC, SQL, JSON, JQuery, HTML, CSS, Tailwind, JS, React, RESTful APIs, Swagger, Postman, JMeter, DevOps, Angular, React) Experience in Azure DevOps Required Candidate profile Experience in EdTech

An innovative company is seeking a skilled UI Developer with a strong background in JavaScript. In this exciting role, you'll be responsible for developing and maintaining high-quality web applications, ensuring a seamless user experience through your understanding of UI/UX best practices. As part o

BairesDev is seeking a Semi Senior React Native Developer to join our innovative team. You will lead the development of complex mobile applications and mentor junior developers, ensuring high-quality user experiences. With 3+ years of experience, you'll optimize app performance while working 100% re

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Apply is seeking a Design Systems Lead who will bootstrap a semantic token system supporting design and product teams across platforms. You’ll own the repo in GitHub while staying fluent in Figma to keep design and engineering aligned. You’ll set high visual quality standards, encode UI best practic

Hanuman Transport is seeking a Full stack Java (Spring Boot) Developer and React JS for a part-time freelance/remote role. The candidate should have Java with at least 5 years of experience and be a quick learner, capable of handling tasks efficiently in a lean, remote setup. The role falls under IT

Staff React Native Engineer Location: New York City (Office) On-site| Full-time Compensation: Competitive Our client is a high-performance technology development firm responsible for building and operating the foundational infrastructure behind the world’s most active digital asset launchpads. The s

SOLANA FOUNDATION in New York is seeking a React Native Engineer to develop and scale cutting-edge mobile applications. You will play a pivotal role in crafting high-performance, seamless mobile experiences that integrate the power of crypto and SocialFi. The ideal candidate has strong expertise in

Jones

📍 Location: Remote - PST to CET | 🕒 Job Type: Full-time About Jones Our vision is to build the leading community for healthier habits and better-for-you products, starting with nicotine dependency. Jones helps nicotine users take control of their health with a holistic system for nicotine manageme

Who We Are Baton Corporation is the development company that builds and operates the entire technology stack behind pump.fun , the largest memecoin launchpad in production today. The systems are low latency, high throughput, live under constant load, and break if you get them wrong. What You’ll Do A

ION Group

Lab49 is an award-winning specialist consultancy that creates bespoke technology in partnership with the most important companies in finance. We were founded in 2002 to bring Silicon Valley solutions to Wall Street’s door. Since then, we have worked on successive waves of technological change, inclu

Who We Are Baton Corporation is the development company that builds and operates the entire technology stack behind pump.fun , the largest memecoin launchpad in production today. The systems are low latency, high throughput, live under constant load, and break if you get them wrong. What You’ll Do A

About Posh We are all social creatures, but the dominant “social” companies today have evolved into digital loneliness machines, driving isolation, anxiety, and mental health challenges around the world. Human connection is lost. Posh is a beacon guiding us back. Posh enables anyone to build an IRL

the company Shopping is seeking a React Native Mobile Engineer I to help bring the next generation of RetailMeNot’s mobile experience to life. You’ll join a smart, collaborative team of mobile engineers as we take on adding new features to our app, reimagining the entire proposition, launching new p

A leading crypto company in New York is seeking a React Native Engineer to join their innovative team. You will be instrumental in shaping the future of a pioneering platform designed for easy coin creation. Ideal candidates should have strong React Native skills and experience shipping apps into pr

A leading educational institution in New York is seeking a Junior UI Engineer to join their innovative team. The role focuses on creating clean, user-friendly interfaces in collaboration with senior engineers and designers. Ideal candidates should have a Bachelor's degree in Computer Science and 1-3