Senior Mobile Software Engineer (React Native) at BitGo | New York

BitGo is the premier infrastructure provider of digital asset solutions, offering comprehensive services including custody, wallets, staking, trading, financing, and settlement from secure, regulated cold storage. Established in 2013, our mission has been to empower clients to securely navigate the digital asset landscape. With a worldwide presence and numerous Trust companies, BitGo caters to thousands of institutions, including leading brands, exchanges, and platforms, alongside millions of retail investors globally. As a cornerstone of the digital economy, BitGo processes a significant share of Bitcoin transactions and stands as the largest independent custodian and staking provider for digital assets worldwide. For further insights, visit www.bitgo.com.This position requires full-time presence at our New York office to foster team collaboration and drive innovative problem-solving.We are seeking a talented Mobile Software Engineer with extensive React Native expertise to join our dynamic team and contribute to the development of cross-platform mobile applications aimed at enhancing the BitGo customer experience.

BitGo delivers secure digital asset infrastructure for institutions and retail investors, offering custody, wallets, staking, trading, financing, and settlement services. The company manages multiple Trust companies and processes a large portion of Bitcoin network transactions. BitGo is known as a leading independent custodian and staking provider. More details are available at www.bitgo.com. Location This position is based full-time in the New York office. In-person collaboration and teamwork are central to this role. Role overview The Frontend and Mobile Software Engineer will focus on building and enhancing cross-platform mobile applications. The work centers on delivering a strong customer experience for BitGo users. Requirements Significant experience with React or React Native

About Us:At Zealthy, we are on a mission to democratize high-quality healthcare, ensuring access for everyone, regardless of their location. We are in the process of creating the world’s largest and most trusted virtual healthcare platform, revolutionizing the delivery of care to make healthcare accessible to all.Founded by a visionary healthcare entrepreneur with a successful track record, including scaling a previous venture to a valuation of $5 billion, Zealthy is uniquely positioned for sustainable growth as we ambitiously pursue our vision. Our steadfast dedication to quality and accessibility is at the heart of everything we do.Our team is committed to making a difference for our patients. While our office culture operates Monday to Friday, often extending beyond standard hours, the true satisfaction comes from the significant impact we create together. Every team member plays a vital role in building something transformative. As a full-time member of our team, you won't just help shape the future of healthcare; you'll also benefit from our success through equity ownership, reflecting our belief that every contributor should be a literal and figurative owner of our mission.If you are not ready to fully commit to your role and contribute to the goal of building the largest and highest quality telemedicine company with in-person work four days a week, we encourage you to reconsider your application.Join us in redefining the future of healthcare.The Role:We are actively seeking a dedicated Mobile Engineer specializing in React Native. This is a full-time, on-site position based in New York, NY. If you are exploring remote or hybrid options, this role may not be the right fit for you.Your Responsibilities:As a React Native Software Engineer at Zealthy, you will join a dynamic team of five full-time engineers and work closely with the Founder/CEO and the Senior Medical Director.You will be tasked with rapidly developing our mobile application for both iOS and Android, using our mobile-friendly web app and initial design elements as a foundation.Your role will require in-person collaboration at our New York office, participating in daily standups, weekly sprint meetings (or a flexible Kanban process), and holding yourself accountable to a rigorous product development timeline.Being part of an early-stage startup means you may need to wear multiple hats, building the initial version of the mobile application with limited support from other engineers.As we grow, there will be opportunities for you to advance into a leadership role based on your performance and aspirations, fostering an ongoing dialogue with current leaders.

About UsBaton Corporation is a pioneering technology firm responsible for developing and operating the comprehensive technology stack behind pump.fun, currently recognized as the largest memecoin launchpad in the industry. Our systems are designed for low latency and high throughput, operating under continuous load, demanding precision and expertise.Your RoleIn the capacity of Senior Staff React Native Engineer, you will be at the forefront of our mobile platform's technical evolution. Your role encompasses tackling our most challenging technical issues, guiding architectural decisions, and fostering growth among your fellow engineers, all while actively contributing to production code with remarkable efficiency.Demonstrate leadership through significant code contributions in critical areas of our mobile stack.Take ownership of complex technical projects, overseeing everything from architectural design to deployment.Define the technical vision for mobile architecture while remaining actively engaged in its implementation.Establish and refine best practices for performance, reliability, and security within a crypto-native environment.Focus on optimizing speed, efficiency, and scalability, effectively bridging blockchain interactions with mobile-first design.Collaborate closely with backend engineers to integrate APIs, real-time data streams, and decentralized technologies.Rapidly iterate—shipping features, collecting user feedback, and enhancing the mobile experience to boost engagement and user retention.Address intricate technical challenges associated with crypto wallets, smart contract interactions, and real-time data updates.Maintain a clean, modular, and scalable codebase while pushing the limits of mobile development.Work in partnership with designers, engineers, and product leaders to shape the future of our mobile platform.

About RillaAt Rilla, we are pioneering the future of conversation intelligence software for offline commerce. Our platform is designed to record, analyze, and index conversations, providing unmatched insights that empower the physical businesses that form the backbone of our economy.Our mission is to democratize cutting-edge technology, making the innovations of the 21st century accessible to all sectors of the economy. As a testament to our success, we are among the fastest-growing companies in history, achieving a remarkable trajectory that includes $40M in revenue within just 3.5 years, a consistent 15% month-over-month growth, and a net revenue retention rate exceeding 170%. Our customer satisfaction score (NPS) even surpasses that of the iPhone!Your RoleAs our first dedicated mobile engineer, you will play a pivotal role in enhancing our mobile codebase, enabling us to deliver exceptional, real-time experiences for field users. You’ll take ownership of our mobile architecture, streamlining today’s velocity bottlenecks and building end-to-end workflows that address real-world challenges on a large scale.Are you passionate about technology? Do you dream of leading innovations that apply AI in impactful ways? Join us at Rilla, where you will collaborate with an extraordinary team and develop your skills to the fullest.Technologies We LeverageProgramming languages and frameworks such as React, React Native, TypeScript, and Python.Open-source tools including Node.js, PostgreSQL, Turborepo, Lodash, and Zod.Industry-standard build tools, including GitHub Actions, Terraform, and Spacelift.Our Core ValuesContinuous Learning: We seek individuals who are fiercely curious and committed to personal growth.Customer Obsession: We prioritize genuine solutions that address customer pain points over superficial metrics.Winning Mindset: We thrive on accountability, team learning, and rapid feedback.Empathy: Understanding our customers' real-world challenges is key to effective solutions.Fearlessness: We embrace risks and view failures as learning opportunities.

About StubHub StubHub is dedicated to improving the global live event experience. The company helps attendees enjoy every step, from ticket search to event entry, and supports sellers ranging from individual fans to major promoters. StubHub’s platform aims to be the safest and most convenient ticket marketplace for millions of users worldwide. Role Overview The Mobile Foundations team, part of Consumer App Foundations (CAF), is hiring a Software Engineer II focused on React Native. This group builds and maintains the core React Native platform that powers StubHub’s consumer apps. Instead of delivering features directly to end users, Mobile Foundations engineers create shared architecture, cross-platform infrastructure, performance improvements, and developer tools. Their work enables product teams to move quickly while maintaining high quality. What You Will Do Develop and enhance the core React Native platform supporting StubHub’s mobile applications Work with cross-platform technologies and collaborate with native iOS and Android components as needed Build reusable systems and platform capabilities used by millions of users worldwide Focus on performance, scalability, and resilience of the mobile experience Support other engineers by improving developer velocity and owning foundational systems Who Thrives Here This position suits engineers who enjoy tackling foundational challenges, improving engineering workflows, and taking responsibility for systems that other developers rely on daily. Location New York, New York, United States

BitGo stands as the premier infrastructure provider for digital asset solutions, offering a comprehensive suite of services including custody, wallets, staking, trading, financing, and settlement, all secured through regulated cold storage. Founded in 2013, we are dedicated to empowering our clients to confidently navigate the digital asset realm. With a worldwide footprint and multiple Trust companies, BitGo caters to thousands of institutions, encompassing many of the industry's leading brands, exchanges, and platforms, as well as millions of retail investors globally. As a pivotal player in the digital economy, BitGo processes a substantial volume of Bitcoin network transactions, establishing itself as the largest independent digital asset custodian and staking provider globally. To learn more, visit www.bitgo.com.With unprecedented growth in our company's history, we are on the lookout for exceptional sales talent in the realms of crypto, fintech, and traditional finance. We seek candidates located in the New York City area who are able to work on-site at our Manhattan office.

About UsBaton Corporation is a leading development firm that designs and manages the comprehensive technology infrastructure for pump.fun, the foremost memecoin launchpad currently in operation. Our systems are engineered for low latency and high throughput, functioning efficiently under constant pressure, and require precision to avoid failure.Your RoleAs a Senior React Native Engineer on our dynamic mobile team, you will be instrumental in enhancing and expanding our mobile application, empowering users around the globe with the capabilities of crypto and SocialFi. You will engage with the entire technology stack to create high-performance mobile experiences, delivering features swiftly and iterating rapidly in a fast-paced growth environment.Develop and maintain a top-tier mobile application using React Native, ensuring exceptional performance and a user-friendly interface.Optimize for speed, efficiency, and scalability, bridging blockchain interactions with mobile-centric design.Collaborate closely with backend engineers to integrate APIs, real-time data streams, and decentralized technologies.Quickly iterate to ship features, collect user feedback, and refine the mobile experience to enhance engagement and retention.Tackle complex technical challenges involving crypto wallets, smart contract interactions, and real-time data updates.Maintain a clean, modular, and scalable codebase while pushing the limits of mobile development.Work in synergy with designers, engineers, and product leaders to shape the evolution of our mobile platform.

About ComúnAt Común, we are dedicated to empowering Hispanic immigrants by transforming their hard work into opportunities for upward mobility. Our focus begins with innovative financial services that facilitate their transition from cash-based systems to the digital economy.We provide checking accounts accessible through over 100 types of Latin American IDs, allowing deposits at more than 90,000 locations across the nation, international transfers to 17 countries at industry-leading rates, and 24/7 bilingual customer support with a sub-5 minute response time via email, chat, and phone.With an impressive annual transaction volume exceeding $1.5 billion and having surpassed $100 million in international transfers just six months post-launch, Común has secured over $50 million in funding from prestigious investors including Redpoint, Costanoa Ventures, and South Park Commons. Our team comprises seasoned professionals from renowned fintech companies such as Brex, Nubank, and Mercury.We believe that immigrants embody the spirit of entrepreneurship, fueled by relentless ambition and a vision for a brighter future for their families. Común is here to support them on every step of their journey.Discover more at comun.app/nosotrosRead our latest article hereAbout the RoleAs the Senior Mobile Software Engineer, you will take charge of the mobile experience that drives our distinctive banking platform. Your responsibilities will include shaping the product roadmap, transforming design concepts into functional applications, and refining our component library to ensure rapid deployment without compromising quality. Our technology stack features React Native, Expo, TypeScript, and GraphQL.Your ResponsibilitiesCollaborate with product, design, and backend teams to build and launch new features.Establish frontend patterns, tools, and processes that enhance development speed.Ensure robust testing and monitoring practices to maintain a stable, high-quality application.Advance our design system and component library for consistency and scalability.Work closely with leadership on technical planning and architecture.

BitGo builds digital asset infrastructure for both institutions and retail investors. The company’s platform spans custody, wallets, staking, trading, financing, and settlement, all supported by regulated cold storage. Since 2013, BitGo has served thousands of organizations, including exchanges, platforms, and global brands, along with millions of retail users. BitGo handles a large share of Bitcoin network transactions and stands as the largest independent custodian and staking provider in the industry. More details can be found at www.bitgo.com. Role overview This full-time Product Marketing Manager role is based on-site in New York. Regular presence in the office is important for close teamwork and creative problem-solving. The position focuses on shaping and executing BitGo’s go-to-market strategy across several product lines, including custody, wallets, APIs, and new retail and mobile experiences. This role plays a key part in defining how BitGo’s products are introduced to the market and adopted by users. What you will do Lead planning and execution for go-to-market strategies across BitGo’s platform and product lines. Work with custody, wallets, APIs, and new retail and mobile offerings. Collaborate with Product, Marketing, Sales, and Design teams. Create positioning and messaging that connect with both institutional and retail audiences. Support product launches and help drive user adoption.

Senior Staff React Native EngineerLocation: New York City (Office)On-site | Full-timeCompensation: CompetitiveJoin a leading-edge technology development firm that is at the forefront of creating and sustaining the foundational infrastructure for the world’s most dynamic digital asset launchpads. This organization operates within an ultra-low latency, high throughput environment, characterized by continuous high-concurrency loads. Here, technical precision is critical, and the impact of every deployment is felt instantly.We are on the lookout for a seasoned React Native Engineer to be a crucial part of our mobile engineering team. This role will be instrumental in developing and scaling a high-performance mobile application designed to empower a global audience with the advantages of decentralized finance (DeFi) and SocialFi. You will work across the entire stack to design exceptional mobile experiences, delivering features rapidly, and iterating efficiently in a high-growth ecosystem.Key ResponsibilitiesApplication Development: Create and manage a top-tier mobile application using React Native, focusing on high-performance execution and an intuitive user interface.Performance Optimization: Enhance mobile architecture for speed, efficiency, and scalability, effectively bridging complex blockchain interactions with mobile-first design principles.System Integration: Partner with backend engineers to integrate advanced APIs, real-time data streams, and decentralized technologies.Rapid Iteration: Implement fast-paced shipping cycles, gathering user feedback to refine the mobile experience and foster long-term engagement.Technical Problem Solving: Tackle intricate challenges related to non-custodial crypto wallets, smart contract interactions, and real-time on-chain data updates.Code Excellence: Uphold a clean, modular, and scalable codebase while pushing the boundaries of modern mobile development.Strategic Collaboration: Collaborate with designers, engineers, and product leaders to define the roadmap and future of the mobile platform.Work EnvironmentIn-Person Collaboration: This position requires in-person presence at the client's office.Intensity: Candidates should be comfortable with unconventional hours and a high-velocity pace where expectations are elevated and impact is immediate.Interview ProcessRecruiter / HR Call: Initial screening to discuss professional background and cultural fit....

Join Privy as a Staff SDK Engineer specializing in React and React Native. In this role, you will lead the development of innovative SDKs that empower developers and enhance user experiences. You will collaborate with cross-functional teams to design, build, and maintain high-quality software solutions.

BitGo is at the forefront of digital asset infrastructure, providing an array of solutions including custody, wallets, staking, trading, financing, and settlement services through regulated cold storage. Since our inception in 2013, our commitment has been to empower clients to securely navigate the digital asset landscape. With a global footprint and multiple trust companies, BitGo caters to thousands of institutions, including leading brands, exchanges, and platforms, as well as millions of retail investors worldwide. As a cornerstone of the digital economy, BitGo processes a significant share of Bitcoin transactions and stands as the largest independent digital asset custodian and staking provider globally. To learn more, visit www.bitgo.com.This position requires full-time presence at our New York office, fostering collaborative team dynamics and innovative problem-solving.We are seeking a Senior Software Engineer to join our HSM team and contribute to the development of an API-first platform for businesses and developers aiming to launch crypto products.

About MILEMILE is an exclusive shopping destination that is transforming the luxury retail landscape. We provide our members with access to a carefully curated, timeless collection of the most coveted products from prestigious fashion brands, all available at unparalleled prices. Positioned at the crossroads of technology and fashion, MILE ensures a seamless and elevated shopping experience for consumers and brands alike. Our mission is to establish ourselves as the premier digital hub for luxury, where exclusivity, value, and exceptional design come together.What We’re Looking ForWe are seeking a Senior React Native Engineer to join our expanding engineering team. In this critical position, you will help shape our customer-facing interfaces on both our mobile application (React Native) and web platforms (React), including dashboards and our marketplace UI. This is a high-impact opportunity for individuals who excel in dynamic, product-oriented environments and aspire to contribute to building a brand that defines the industry.What You’ll Do Collaborate closely with front-end, product, design, and backend teams to create high-quality features across mobile and web platforms. Influence our front-end architecture and best practices to ensure scalability, maintainability, and an exceptional user experience. Execute pixel-perfect designs with a focus on interaction, motion, and accessibility. Enhance app and web performance, reliability, and compatibility across devices. Guide UI/UX decisions with a meticulous eye for detail, contributing to MILE’s luxurious brand identity. Participate in the development and evolution of our Tamagui-powered design system across platforms. Mentor junior engineers and contribute to fostering a culture of technical excellence and innovation. Keep abreast of the latest front-end trends and technologies to continually push the envelope of what’s possible. Who You Are 5+ years of professional experience in developing complex front-end applications in production environments. Extensive expertise in React and React Native, along with a solid understanding of their ecosystems and performance nuances. Proficient in modern JavaScript/TypeScript, state management (e.g., Redux, Zustand), and component-driven architecture. Demonstrated experience in building high-performance React Native applications with best practices for image loading, react-query implementation, scroll view optimizations, and modal management. Deep understanding of React quirks, performance challenges, useEffect pitfalls, and the ability to create custom hooks. Experience in developing custom React Native bridge modules. Proven track record of delivering polished mobile applications and web experiences that meet high standards of design and usability. Familiarity with Tamagui, Ant Design, Tailwind, and Shadcn.

We are seeking a talented and experienced Lead/Senior React Native Engineer to join our innovative team at Pelago. In this role, you will be responsible for designing and implementing high-quality mobile applications using React Native. You will lead a team of developers and collaborate with cross-functional teams to deliver seamless user experiences.Your expertise will contribute to the architectural decisions and best practices that drive our mobile strategy. If you are passionate about technology and eager to make an impact, we want to hear from you!

Join Partiful in Revolutionizing Social Connections!At Partiful, our mission is to foster friendships through unforgettable social events. We believe that gatherings, whether parties or other events, are the most effective way to meet new people and forge lasting connections. Our platform simplifies event planning, allowing hosts to create stunning party pages that facilitate seamless communication with guests. Download our app today and experience the magic!We are dedicated to innovating the event planning process, enhancing real-world connections, and bridging the gap between friends and acquaintances. Our ultimate vision is to transform every in-person experience into a cherished memory, eliminating barriers to bringing your social plans to life. Discover more about our impactful mission in The Washington Post, The New York Times, The Wall Street Journal, The Atlantic, Wirecutter, and USA Today. Partiful has been recognized as Google’s Best App of 2024, a Finalist for Apple’s App Store Awards, and has received the title of App of the Day from Apple multiple times. In 2025, we proudly earned a spot among TIME's 100 Most Influential Companies.

About SomethingsAt Somethings, we are pioneering the first social wellness platform designed specifically for teens. Our mission is to connect teens with mentors who understand and support them, facilitating meaningful relationships that promote growth and healing.With 25 million teens in the U.S. facing mental health challenges, each download of our app represents a potential lifeline. We strive to ensure that not only do these teens engage with our platform, but they also build connections with caring individuals who can guide them towards a healthier future.Backed by General Catalyst and leading investors in healthcare and consumer markets, we are experiencing rapid growth—having increased our user base by 1100% in 2025 and projecting to multiply our reach fivefold in 2026.If you are eager to contribute to a company that is poised to redefine mental health support for a generation, we invite you to join us.Role OverviewWe are seeking a Full Stack React Native Engineer to become part of our dedicated engineering team. In this role, you will play a vital part in developing the core product experiences that propel our mission forward.Your work will be characterized by high agency and a profound impact:You will actively influence the product features that help teens connect and improve their well-being.What You’ll DoYour responsibilities will extend beyond just building features; you will take complete ownership of critical projects aligned with our strategic objectives for 2026:1. Create Enriching Teen × Mentor ExperiencesDevelop engaging mobile experiences that evoke warmth, speed, and a human touch.Enhance the onboarding process and early engagement to optimize the initial user journey.Design user interfaces that are as intuitive and addictive as leading social applications.2. Develop Scalable Tools for Our Mentor NetworkBuild mentor-focused features that enhance consistency, efficiency, and connectivity.Create safety mechanisms that proactively identify risks and mitigate human error.Refine mentor workflows to ensure they feel empowered by our tools.3. Lead Full-Stack Product DevelopmentConstruct end-to-end features utilizing React Native, backend services, and APIs.Collaborate closely with design, product, growth, and clinical operations teams.Conduct user interviews with teens and mentors to gain deep insights into their needs.

Role Overview BitGo is looking for a Senior Infrastructure Engineer in New York to help strengthen and expand the systems behind its crypto financial services. This role focuses on designing, building, and maintaining scalable infrastructure that supports the company's growth and reliability goals. What You Will Do Design and implement systems that scale with increasing demand Maintain existing infrastructure to ensure high reliability and performance Identify areas for improvement and contribute to better engineering practices About BitGo BitGo provides crypto financial services and relies on a strong engineering foundation to deliver secure, high-performing products.

About FinFin is revolutionizing the payments landscape with a cutting-edge platform designed for high-value, instantaneous transactions on a global scale. As a Series A-stage company, we are proudly backed by prestigious investors such as Sequoia and Circle. Utilizing stablecoins, Fin empowers individuals and businesses to transfer substantial amounts of money within seconds—whether it's to fellow Fin users, bank accounts, or across crypto networks. By merging the efficiency of cryptocurrencies with the dependability of traditional finance, Fin redefines the global movement of money. Imagine if banks and payment systems were reimagined today—this is what Fin embodies.About the RoleWe are seeking a skilled Mobile Engineer to lead the development of our mobile application for both iOS and Android platforms using React Native. Your contributions will be instrumental in shaping the initial user experience with Fin, transforming complex payment processes into seamless, user-friendly interfaces. Your expertise will help demystify crypto, wallets, and international settlements, delivering a smooth mobile experience.In this position, you will collaborate closely with the founders and the engineering team, making critical decisions regarding architecture and design, while taking features from concept to production. If you are passionate about creating delightful consumer products backed by robust infrastructure, this role is perfect for you.We respect your time and focus our hiring process on practical system design and architectural discussions, avoiding unnecessary coding challenges or unpaid assignments.

Role overview The Senior Software Engineer at the City of New York will work on software that helps city departments deliver better services. The focus is on building and refining technology that supports municipal operations, aiming to make them more efficient and responsive. What you will do Design and develop software to support and enhance services provided by the city Work closely with colleagues who are committed to improving public service Use technical skills to address challenges faced by city operations Location This position is located in New York, NY.