Senior Software Engineer - Mobile/React Native

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 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.

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 BitGo BitGo delivers secure digital asset infrastructure, including custody, wallets, staking, trading, financing, and settlement services backed by regulated cold storage. Founded in 2013, BitGo supports thousands of institutions and millions of retail investors worldwide. The company operates multiple Trust companies and processes a significant share of Bitcoin network transactions. BitGo is recognized as the largest independent custodian and staking provider. Learn more at www.bitgo.com. Location Requirement This role is based full-time in our New York office. In-person collaboration and teamwork are essential for this position. Role Overview BitGo is looking for a Software Engineer with strong experience in React or React Native. This engineer will join our team to build and improve cross-platform mobile applications, helping to shape the BitGo experience for customers.

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.

Role Overview Jahnel Group is hiring a Senior Mobile Application Software Engineer. This role focuses on building and improving mobile solutions alongside a skilled group of engineers. The position is open to candidates based in Schenectady, New York, or those working remotely from within the United States.

Join StubHub, where we're on a mission to revolutionize the live event experience worldwide. Whether it's someone's first event or their hundredth, we're dedicated to providing exceptional service from the ticket search to stepping through the gate. We aspire to be the safest and most convenient platform for both ticket buyers and sellers, ranging from individual fans to worldwide promoters.StubHub is excited to welcome a Software Engineer II to our Web Foundations team within the Consumer App Foundations (CAF) department. Our team is responsible for creating and maintaining the shared web platform that underpins StubHub's consumer experiences on both web and mobile.As a full-stack engineer on the Web Foundations team, you will engage with both frontend and backend systems to develop reusable services, shared libraries, and platform capabilities that empower product teams to deliver faster and with enhanced quality. Your contributions will impact core systems serving millions of users, ensuring they remain performant, reliable, and easy for other engineers to utilize.This role is ideal for engineers who thrive on building scalable systems, enhancing developer experiences, and tackling real-world challenges at marketplace scale.

About Basic CapitalBasic Capital is revolutionizing the $1 trillion retirement sector in America through innovative fintech solutions. Our goal is to develop a mortgage for retirement that democratizes wealth accessibility for all Americans. We are crafting a new retirement ecosystem by creating cutting-edge products, platforms, and a credit marketplace.Our founding team comes from prestigious backgrounds, including Goldman Sachs, Uber, Block, Stripe, and Robinhood. Supported by esteemed investors such as Lux Capital, Forerunner Ventures, BoxGroup, SVAngel, Inspired Capital, and Henry Kravis, we are headquartered in SoHo, NYC, and are building a dynamic, high-performance team dedicated to addressing wealth inequality.For more details, please visit Basic Capital’s website.Your RoleJoin as a key member of a team focused on enhancing customer experience and operational excellence at Basic Capital.Quickly develop and implement solutions to meet urgent customer demands.Become well-versed in our systems end-to-end, triaging and creating rapid solutions for high-priority requests.Create internal dashboards and monitoring tools that provide real-time insights into customer health.Contribute to architecture discussions, planning sessions, and code reviews across different teams.

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.

About KalshiKalshi is pioneering the future of finance through innovative prediction markets, where individuals can trade on various outcomes, transforming inquiries about the future into tangible financial assets. After years of advocacy, Kalshi has successfully legalized prediction markets in the U.S., becoming the fastest-growing financial market nationwide, with diverse offerings across politics, economics, finance, weather, technology, AI, and culture.Our belief is simple: prediction markets are poised to become the world's largest financial market, enabling anyone to turn any question into a financial position.Vision: To establish the largest financial market on the planet.Mission: To bring more truth to the world through the power of markets.At Kalshi, we cultivate a culture of excellence by hiring talented individuals, promoting hard work, and celebrating our achievements together. We invite exceptional and ambitious candidates to join our dynamic team as we create the next generation of financial markets.Role OverviewWe are seeking a dedicated and results-driven Mobile Software Engineer to take charge of Kalshi’s mobile application experience. This role involves the development of our core trading and user-facing platform on mobile, with full accountability for feature delivery, performance, and long-term technical strategy.You will play a vital role in our mobile stack, designing, building, and launching production-quality mobile features from conception to deployment. As Kalshi continues to grow, this position will evolve, granting you greater influence over architecture, reliability, and team development. Success in this role requires strong technical judgment, the ability to navigate complex systems, and a commitment to delivering high-quality user experiences promptly.Key ResponsibilitiesOversee the development and enhancement of Kalshi’s mobile application, ensuring excellence in quality, performance, and user experience.Design, implement, test, and release customer-facing mobile features from start to finish.Develop and maintain a robust mobile application using Flutter, incorporating essential platform features such as notifications and biometric authentication.Work collaboratively with product and design teams to translate user and business needs into effective technical solutions.Architect user interfaces, manage application state, and ensure seamless integration with backend APIs.Make informed decisions and execute software development strategies to elevate the mobile application experience.

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!

At StubHub, we are dedicated to transforming the live event experience on a global scale. Our goal is to create delightful journeys for fans, from their initial search for tickets to the moment they enter the venue. We ensure that both fans and sellers, whether they are individual ticket holders or promoters of major tours, find StubHub to be the safest and most convenient platform for ticket transactions.We are on the lookout for a Software Engineer II to join our dynamic mobile engineering team, which is focused on developing AI-powered consumer experiences that will redefine our marketplace. This innovative team is reimagining how fans discover, evaluate, and purchase live events through highly personalized and intelligent mobile interactions. Instead of merely enhancing existing workflows with AI, we are creating new mobile-first interaction models powered by cutting-edge intelligent systems.As a key member of this team, you will collaborate closely with product managers, designers, backend developers, and AI specialists to bring early-stage initiatives from concept to production. You will have significant ownership over user-facing experiences utilized by millions of fans worldwide.This role offers the chance to work with high autonomy, allowing you to move quickly and play a pivotal role in defining the future of consumer interaction at StubHub.

Join Our Team:At Notion, we empower individuals and teams to create exceptional tools for their most important work. In a digital landscape filled with countless applications, Notion stands out by offering a unified solution that connects documents, notes, projects, calendars, and emails—enhanced by AI to streamline your workflow. Our platform is trusted by millions, including renowned organizations like Toyota, Figma, and OpenAI, all of whom appreciate Notion for its versatility and ability to save resources.We believe in the power of in-person collaboration and prioritize team synergy. Therefore, all employees are required to work from our offices on Mondays, Tuesdays, and Thursdays, which we refer to as Anchor Days. Depending on the role, there may be additional office attendance requirements.About This Role:The evolution of mobile devices has transformed personal computing. The capabilities of a desktop computer are now conveniently housed within our pockets. By equipping users with the tools they need to create their own solutions, we aim to address challenges on the go. Our vision is to deliver a delightful, user-friendly mobile experience, and we're on the lookout for talented Android engineers to help bring this vision to life.Your Responsibilities:As part of the Mobile Platform team, your mission will be to develop a top-tier mobile application by facilitating the creation of high-quality, efficient features.Collaborate with mobile product teams to design and implement services, frameworks, and reusable UI components, while establishing guidelines for feature development on Android.Focus on enhancing the performance, reliability, and overall quality of our Android application.Drive improvements in developer efficiency through optimization of our build systems, mobile CI/CD processes, and release management.Qualifications:Analytical Problem-Solving: You approach problem-solving with a thorough understanding of context and are adept at breaking down complex issues to find elegant solutions, whether individually or collaboratively. You're also open to seeking assistance when necessary.Experience in Scalable App Development: You have a proven track record of collaborating with teams to create and maintain high-quality Android applications for a broad audience, and understand the principles required to scale an Android engineering team.Pragmatic Approach to Technology: You view technologies and programming languages through the lens of trade-offs, remaining adaptable and willing to learn new tools as needed.Empathy and Teamwork: You value collaboration and actively contribute to fostering a positive team environment.

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....

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.

About BettermentBetterment is a premier, technology-focused financial services company dedicated to offering innovative investing and retirement solutions for individual investors and financial advisors. Our commitment is to enhance financial well-being through accessible tools, including a 401(k) solution tailored for small and medium-sized enterprises. We are driven by a mission to empower individuals to build wealth with confidence and ease. Headquartered in the heart of NYC, we facilitate hybrid work arrangements with four days a week in the office.About the RoleAs a Staff Mobile Engineer within our Mobile Platform team, you will play a pivotal role in developing and maintaining the foundational mobile infrastructure, frameworks, and tools that support Betterment’s applications. Your contributions will significantly enhance the developer experience for mobile engineers across the organization, ensuring rapid, secure, and sustainable feature delivery.At Betterment, our platform engineering team empowers engineers across the company to deliver exceptional code with assurance. We collaborate closely with product engineers to create cross-functional capabilities, infrastructure, and frameworks that enable swift delivery while upholding quality. We tackle intriguing technical challenges related to scalability, architecture, and user experience to craft an app platform that brings satisfaction to both our clients and our engineers.This position is based in our NYC office. Below, we outline the base salary range for this role. Actual salaries may vary based on several factors, including location, experience, and performance. The mentioned range is just one aspect of Betterment’s comprehensive compensation package.New York City: $200,000 – $228,000We provide a competitive equity package along with health, dental, and vision benefits, life insurance, short-term and long-term disability insurance, Employee Assistance Program (EAP), commuter and parking benefits, FSA/HSA, and a 401(k) with employer matching. Furthermore, we offer a flexible paid time off (PTO) policy. This position may also qualify for variable compensation through a company incentive bonus. For roles at our NYC HQ, in-office attendance is required Monday through Thursday.A Day in the LifeDevelop and maintain shared React Native frameworks, libraries, and development tools utilized by mobile product teams to deliver customer-facing features.Collaborate with engineers across the organization to enhance the reliability, performance, and security of our mobile applications.Lead medium-to-large scale projects, ensuring effective communication and collaboration across teams.

About SunoAt Suno, we are revolutionizing the music industry by unleashing creativity, where every idea transforms into captivating sound. Our flagship product harnesses the power of cutting-edge music-generation technology, enabling users of all backgrounds to create high-quality songs featuring unique beats, instruments, and vocals. We are also crafting an unparalleled ecosystem of musical services, which includes Suno Studio, a comprehensive suite for audio editing, and Hooks, an innovative platform for creating and sharing dynamic music videos that breathe life into songs.Founded by passionate Harvard alumni just two years ago, Suno has already achieved remarkable milestones, including $200 million in subscription revenue. Our growth trajectory positions us among the fastest-growing AI startups globally, with a valuation of $2.45 billion as of November 2025 and $375 million in venture capital funding. To date, over 100 million individuals have produced music using Suno, supported by a talented team of 150 collaborators across multiple locations, including Boston/Cambridge, Venice Beach, San Francisco, and New York City.With more than 10 million downloads on the Play Store and a stellar 4.8 rating, our Android team is pivotal to shaping our product's future and driving the company's success.About the RoleWe are seeking a dynamic Mobile Engineering Manager to lead our mobile app development teams, focusing primarily on Android. In this role, you will be responsible for building and nurturing a high-performing engineering team dedicated to mobile innovation.What You’ll DoLead, mentor, and expand a talented team of mobile engineers and team leaders.Oversee recruitment, performance evaluations, career growth, and team culture development.Collaborate with product and engineering leaders to ensure cross-functional alignment and streamline efforts across distributed teams.Champion high standards in code quality, testing, and architecture, while balancing the need for rapid iteration with long-term sustainability and security.What You’ll NeedA minimum of 7 years in software engineering, with at least 3 years in a leadership role managing a mobile engineering team.Proven experience in writing production-level code and successfully leading engineering teams to deliver complex features from concept to launch.Ability to thrive in a fast-paced, ambiguous environment while effectively managing multiple priorities and deadlines.

About TitanTitan is an innovative and award-winning wealth management firm dedicated to revolutionizing the financial landscape for our generation. Our mission is to democratize access to wealth management services by providing everyone with a personal wealth advisor at their fingertips. Traditionally, such services have only been available to the ultra-wealthy, but with Titan, we are changing that narrative. Utilizing cutting-edge technologies like artificial intelligence, we empower our advisors to cater to clients who have long been underserved in this space. Supported by renowned investors such as a16z, General Catalyst, and Sam Altman, we proudly manage over $1 billion in assets for clients nationwide.Why Join Titan?Visionary Goals: Be part of a transformative vision that aims to elevate our generation's wealth.Timeliness: The rise of LLMs allows us to provide personalized wealth management solutions now more than ever, and we are driven by this urgency.Significant Impact: Join a small, dynamic team where your contributions will make a substantial difference.Collaborative Culture: Experience a vibrant in-person culture, working closely with our founders and team members.Competitive Compensation: Enjoy attractive cash compensation and above-market equity options, ensuring you are a true owner in our mission.Esteemed Backers: Work with a team supported by top-tier investors who share our ambitious vision.Role OverviewWe are seeking a talented Senior Full Stack Engineer to design and implement end-to-end features on both web and mobile platforms. You will collaborate with Product, Design, and Backend teams to deliver seamless user experiences across our React (web) and React Native (mobile) applications. The ideal candidate is passionate about tackling real user challenges through elegant design and exceptional engineering.

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.