About Quizlet:At Quizlet, we are dedicated to empowering every learner to reach their goals in the most effective and enjoyable manner. Our learning platform, valued at over $1 billion, supports millions of students each month, including two-thirds of U.S. high school students and half of U.S. college students, facilitating more than 2 billion learning interactions monthly.We combine cognitive science with advanced machine learning techniques to personalize and improve the educational experience for students, professionals, and lifelong learners. Our passion lies in maximizing learner engagement through diverse approaches and innovative tools.Let’s Innovate the Future of LearningJoin us in crafting and delivering AI-driven learning tools that transcend borders and unlock human potential.About the Team:The Mobile Study team at Quizlet, located in San Francisco, is dedicated to providing the optimal studying experience for millions of learners around the globe. Our team develops and enhances essential mobile features that make Quizlet a trusted learning ally—ranging from flashcards and practice modes to AI-enhanced study experiences. We work collaboratively with various teams within the mobile organization, backend services, design, and product teams to ensure seamless, high-quality learning experiences on both iOS and Android platforms.About the Role:We are in search of a Senior Software Engineer to become a vital member of our Mobile Study team at Quizlet. In this role, you will be instrumental in developing our iOS and Android applications, enhancing the study features that millions of students rely on to learn effectively with Quizlet. You will play a key role in shaping the core functionalities that keep learners engaged and thriving.You will collaborate closely with engineers, designers, and product managers to deliver high-quality mobile experiences. This position offers you the chance to influence technical direction, contribute to architectural decisions, and mentor fellow engineers while steering projects from concept to launch. We are seeking someone who is enthusiastic about crafting intuitive, high-performing, and dependable mobile experiences that truly make a difference for learners worldwide.We are pleased to inform you that this is an onsite position at our San Francisco office. To promote team collaboration, we require employees to be present in the office a minimum of three days per week: Monday, Wednesday, and Thursday, as needed by your manager or the company. We believe this environment fosters enhanced work efficiency, teamwork, and supports personal and organizational growth.

Discord is a platform that connects over 200 million individuals monthly for a variety of activities, but one of the most popular uses remains to play video games. With more than 90% of our users engaging in gaming, they collectively spend 1.5 billion hours each month enjoying thousands of unique titles through Discord. As a pivotal player in the gaming landscape, we are dedicated to enhancing the social experience of gaming, making it seamless and enjoyable for users to connect before, during, and after gameplay.We are seeking a talented Senior Software Engineer to join our Mobile Architecture team, where you will be instrumental in creating the technical backbone that supports Discord’s mobile applications for millions of users around the globe.Your work will focus on performance-critical systems leveraging React Native, with the aim of providing an unparalleled mobile experience that feels immediate and responsive. Our aspiration is to develop products that captivate our users—functional, reliable, user-friendly, and delightful, with performance as a central element.

Join our dynamic team at Reteam as a Mobile Software Engineer in San Francisco, where innovation meets technology. We are looking for a passionate engineer to contribute to our mobile applications and enhance user experiences.In this role, you will collaborate with cross-functional teams to design, develop, and maintain high-quality mobile solutions.Key ResponsibilitiesDevelop and maintain mobile applications for both iOS and Android platforms.Collaborate with UX/UI designers to implement user-friendly interfaces.Optimize applications for maximum speed and scalability.QualificationsProficiency in Swift and Kotlin.Experience with mobile frameworks and libraries.Strong problem-solving skills and attention to detail.If you're ready to take on exciting challenges and grow your career in mobile development, we want to hear from you!

About Abby CareAt Abby Care, we are dedicated to revolutionizing family caregiving in America. Our mission tackles one of the most pressing challenges faced by over 50 million unpaid family caregivers: providing them with the training and employment they deserve for the vital care they offer at home.We are creating a powerful, tech-driven family care platform that enhances the caregiving experience, improves health outcomes, and delivers exceptional support nationwide.As we expand our mission, we are seeking passionate individuals to join our team. Our partnerships with leading healthcare providers, insurance plans, and community organizations, along with the backing of top-tier, mission-focused venture capitalists, empower families across the country. You will become part of a talented team with expertise from renowned companies such as Uber, Scale AI, DoorDash, Dropbox, and Meta.The RoleWe are in search of a motivated and skilled Senior Software Engineer, Mobile (iOS & Android) to join our team. You will report directly to the VP, Head of Engineering. This is a full-time role based in San Francisco, CA (4 days in-person).In this position, you will be at the forefront of transforming family caregiving through innovative, AI-driven mobile solutions. You will lead the development of our mobile applications, ensuring they are user-friendly, intuitive, and robust for family caregivers. Recognizing that our users may not be tech-savvy and may utilize the app in various environments with inconsistent connectivity, you will create solutions that function seamlessly in real-world conditions, establish a comprehensive testing framework, and implement reliable updates that families can depend on daily.Key Responsibilities:Oversee the entire mobile app development lifecycle. You will take ownership from initial concept through to delivery, including technical design, core feature implementation, performance optimization, and oversight of release cycles for both iOS and Android platforms.Create an intuitive and resilient caregiver-focused experience. You will develop user flows that are straightforward, guided, and forgiving, tailored for non-technical users, ensuring the app remains functional in low-connectivity situations.

Padlet is dedicated to enhancing education through innovative software solutions. We believe that education should spark curiosity, creativity, and a sense of community. Our tools empower visual content creation and collaboration in millions of classrooms around the globe.As mobile devices become the primary computing tool for many, we are seeking talented Mobile Engineers to elevate our mobile applications and positively impact a billion lives.Key ResponsibilitiesDeveloping exciting new features for our iOS and Android applications, such as a voice recorder with audio effects.Enhancing app performance and reliability, e.g., optimizing network calls to handle unstable internet connections.Streamlining our development processes, such as improving our internationalization pipelines to support translations into over 40 languages.QualificationsProven track record of writing high-quality code recognized by peers.Proficient in utilizing resources like Stack Overflow effectively.Bonus: A great sense of humor is a plus!

At Hover, we empower individuals to design, enhance, and safeguard the properties they cherish. Utilizing our proprietary AI, developed over more than a decade of extensive real estate data, we address pivotal queries such as “What will it look like?” and “What will it cost?”. Homeowners, contractors, and insurance experts depend on Hover for precise measurements and interactive 3D models of properties, all achievable through a quick smartphone scan.Driven by curiosity and purpose, our team is dedicated to serving our customers and communities. We believe that the best innovations stem from diverse perspectives and take pride in fostering an inclusive, high-performance culture that encourages growth, accountability, and excellence. Supported by renowned investors like Google Ventures and Menlo Ventures, and trusted by industry leaders such as Travelers, State Farm, and Nationwide, we are transforming how people perceive and interact with their environments.Why Hover Wants YouWe are in search of a proactive full-stack engineer who is committed to crafting reliable, high-quality systems that create real-world impact.Our Mobile team comprises a close-knit group of engineers specializing in Rails, iOS, React Native, and Android, all of whom are dedicated to their craft and customer experience. We develop and refine the mobile platform that is central to Hover’s operations — the systems that convert real-world property data into accurate 3D models and measurements, utilized daily by contractors and insurers. We collaborate seamlessly across engineering, product, and design to enhance core customer journeys while scaling our platform with confidence.In this role, you will engage with all layers of the technology stack — designing scalable backend APIs, optimizing data flows, and enhancing user-friendly frontend experiences — all aimed at building products that are high-performing, resilient, and meticulously designed. If you are excited by the challenge of solving intricate system problems and want your contributions to have a visible, measurable effect, this is where you can excel.

About UsAt Sierra, we are on a mission to revolutionize customer experiences through innovative AI solutions. Based in the vibrant city of San Francisco, our company is expanding its reach with offices in Atlanta, New York, London, France, Singapore, and Japan, promoting a collaborative and inclusive workplace.We uphold a strong set of core values that define our culture: Trust, Customer Obsession, Craftsmanship, Intensity, and Family. These principles guide our actions and drive us to consistently deliver exceptional results.Our co-founders, Bret Taylor and Clay Bavor, bring a wealth of experience from their previous roles at industry-leading companies such as Salesforce and Google, shaping the future of technology with their visionary leadership.The RoleWe are seeking a talented Mobile Software Engineer with expertise in iOS and/or Android development to take ownership of our Experience SDKs—the essential components that allow clients to seamlessly integrate Sierra’s chat and voice functionalities into their mobile applications.As the technical lead for mobile development at Sierra, you will oversee the user interface, animations, voice interactions, performance enhancements, and deep OS integrations, collaborating closely with design and frontend teams to ensure a cohesive and delightful mobile experience.What You’ll DoManage our Mobile Experience SDKs for iOS and Android. Spearhead the architecture, implementation, and ongoing development of our native SDKs, making the integration process effortless for other engineers and providing an exceptional user experience.Enhance OS-level interactions. Leverage platform-native capabilities to improve functionalities such as notifications, background execution, audio routing, app extensions, and deep links, ensuring that our agents feel seamlessly integrated within each platform.Create outstanding mobile interfaces. Collaborate with designers and engineers to develop visually appealing and highly functional mobile user interfaces that elevate the overall user experience.

Join Inkitt as we revolutionize the entertainment industry! We are creating the Disney of the 21st Century by harnessing the power of AI and predictive algorithms to uncover hidden stories and transform them into blockbuster hits. With a new $1M ebook released every 4 weeks, we deliver directly to consumers through our innovative Galatea app. As the 11th most successful publisher globally, we have a hit-rate 40 times greater than traditional publishers. Backed by renowned VCs like Khosla, Kleiner Perkins, and NEA Ventures, our recent foray into CandyJarTV marks just the beginning of our journey to become a next-gen entertainment powerhouse.

About LeonaAt Leona, we are dedicated to revolutionizing healthcare access and empowering individuals to take proactive control of their health. Our ambition is to change the global healthcare landscape, ensuring that everyone can receive top-notch care regardless of their location. Patients should feel confident and supported in managing their health, while doctors can focus on delivering exceptional care with reduced administrative burdens.We are paving the way for a new era of doctor-patient interactions through our innovative platform that utilizes WhatsApp for seamless communication. Our solution acts as a clinical assistant, automating non-urgent tasks and providing patients with 24/7 access to their healthcare providers.Headquartered in San Francisco and Mexico City, our diverse team boasts extensive experience from industry leaders like Rappi, Uber, and Modern Fertility, backed by esteemed investors such as General Catalyst and Accel.If you are eager to learn, innovate, and contribute to a transformative startup environment, we invite you to explore this exciting opportunity!

BitGo develops infrastructure for digital assets, offering solutions for custody, wallets, staking, trading, financing, and settlement. Since 2013, the company has supported institutions and retail investors worldwide, managing a significant portion of Bitcoin transactions and providing independent custody and staking services. BitGo operates globally and serves a broad client base, including exchanges and major brands. Role overview The Frontend & Mobile Software Engineer position is a full-time, onsite role based in San Francisco, California. This role emphasizes regular in-person collaboration to foster teamwork and drive innovation within the office. What you will do Develop and enhance cross-platform mobile applications for BitGo users. Use React or React Native to create a seamless and intuitive user experience. Support projects that power BitGo’s digital asset products and services. Requirements Proven experience with React or React Native. Interest in building mobile and frontend features that improve user experience. Ability to work onsite with the team in San Francisco. Learn more about BitGo at www.bitgo.com.

Join Us in Combating the Escalating Wildfire Crisis with Cutting-Edge AI and IoT SolutionsAbout UsThe Challenge: In the face of climate change, wildfires are becoming more frequent and severe. Traditional methods of fire detection, reliant on bystanders and emergency calls, lead to critical delays in response times. Fire authorities require innovative solutions for faster detection, verification, and response to avert catastrophic fire outbreaks.Who We Are: Pano AI is a dynamic growth-stage startup based in San Francisco, comprising over 150 passionate professionals. We stand at the forefront of wildfire detection and intelligence, equipping fire services with timely information and advanced technology to enhance their response capabilities. Our platform integrates cutting-edge hardware, software, and AI, utilizing ultra-high-definition 360-degree cameras positioned strategically to provide real-time threat assessments. Our technology empowers fire professionals with actionable insights, enabling them to prevent minor flare-ups from escalating into significant disasters.Recognized by TIME as one of the 100 Most Influential Companies of 2025, and featured in MIT Technology Review's top 15 climate tech companies to watch, Pano AI is paving the way for innovative solutions in fire response. Our contributions have been recognized in major publications such as the Wall Street Journal and Bloomberg.

At Lyft, we are driven by our mission to connect communities and enhance mobility. We focus on fostering an open, inclusive, and diverse culture that empowers our teams. As part of our Mobile Foundations team, you will play a pivotal role in developing robust software solutions that tackle large-scale challenges, ensuring our mobile applications are not only stable but also scalable and efficient.In your role as a Senior Android Engineer, you will be responsible for creating and maintaining the core systems that serve as the backbone for all Lyft mobile engineers. Your contributions will enable teams across the organization to deliver exceptional experiences that seamlessly connect people and places. You will be instrumental in building scalable infrastructure that accelerates innovation while prioritizing an outstanding developer experience. Your efforts will directly enhance the stability of Lyft as a whole.Our mobile applications are utilized by millions, and we take pride in maintaining high development standards. We follow best practices in code architecture and embrace rapid release cycles. Our codebase is primarily written in Kotlin, leveraging modern design patterns and coding practices. We also actively engage with the developer community, contributing to open-source projects, including the Kotlin language itself.

Discord connects more than 200 million users each month, offering a platform designed to enhance the gaming experience. With a community deeply engaged in gaming, over 90% of users play various titles, adding up to 1.5 billion hours of gameplay monthly, the company is dedicated to making it easy for players to interact and enjoy their gaming journeys. Role overview The Staff Software Engineer, Mobile Architecture will help define the technical direction for Discord’s mobile apps on iOS and Android. This role centers on optimizing performance-critical systems using React Native, aiming to deliver a seamless and responsive mobile experience. What you will do Shape the architecture and long-term vision for Discord's mobile platforms Lead technical strategy and address complex engineering challenges Mentor engineers within the mobile team Focus on improving functionality, reliability, and performance across mobile applications Requirements Experience with mobile development on iOS and Android Strong background in React Native Ability to guide technical decisions and mentor fellow engineers Proven track record of optimizing performance-critical systems

Join Air Apps as a Mobile Software ArchitectAt Air Apps, we are innovators at heart, driven by a mission to revolutionize personal and entrepreneurial planning with our AI-powered Personal & Entrepreneurial Resource Planner (PRP). Founded in Lisbon in 2018, and now with a dynamic presence in both Lisbon and San Francisco, we have self-funded our growth and achieved over 100 million downloads globally.We challenge conventional thinking and continuously push the boundaries of AI-driven solutions to enhance the way people plan, work, and live. As part of our team, you will play a crucial role in developing products that empower individuals worldwide.Be a part of our journey to reshape resource management and make a lasting impact on lives around the globe.Your RoleAs a Mobile Software Architect, you will be pivotal in designing robust and high-performance mobile architectures for our applications, with a primary focus on iOS development. Your cross-functional knowledge of Android development will be an added advantage.In this strategic and technical leadership position, you will collaborate closely with product, design, and engineering teams to create elegant solutions that cater to millions of users across the globe. Your architectural decisions will shape the future of our mobile ecosystem.Key ResponsibilitiesDefine and lead the mobile architecture strategy, ensuring scalability and maintainability of our projects.Focus on iOS architecture, libraries, and platform-specific patterns while being acquainted with Android frameworks.Collaborate with engineers, designers, and product managers to ensure alignment of architectural decisions with product goals and user experience.Establish and uphold coding standards, design patterns, and performance guidelines.Lead architectural reviews and provide expert guidance on refactoring and scaling existing mobile applications.Design APIs, SDKs, and modular components for reuse across teams.Guide decisions regarding third-party libraries, mobile tooling, and build/deployment pipelines.Work with backend and cloud teams to ensure seamless integration between mobile applications and services.Stay abreast of the latest trends and best practices in mobile architecture.

About GustoAt Gusto, we are dedicated to empowering the small business economy. Our services simplify complex tasks like payroll, health insurance, 401(k)s, and HR, allowing business owners to concentrate on their passion and customers. With teams in Denver, San Francisco, and New York, we proudly support over 400,000 small businesses nationwide, committed to creating a workplace that reflects and honors the customers we serve. Discover more about our Total Rewards philosophy.About the Role:We are seeking passionate Mobile iOS Engineers who are eager to craft exceptional user experiences. In this role, you will develop features that are not only functional but also intuitive and delightful for our users. You will take charge of scaling our shared services while staying current with the latest iOS advancements. Collaborating with teams from Product Management, Identity, Security, System Design, and Infrastructure, you will build solutions that make a significant impact. If you are enthusiastic about creating elegant, scalable applications and want to be part of a supportive, innovative mobile team, we would love to connect with you!About the Team:At Gusto, we are at a transformative stage with over 1M+ monthly active users and the recent launch of our employer experiences on mobile. Our mission is to address the real challenges faced by small business owners and their employees, with mobile technology being crucial for delivering effective solutions. As a member of our mobile team, you will be at the forefront of this change, collaborating with talented engineers and designers passionate about providing a seamless mobile experience. Together, we aim to empower small business owners and their teams to succeed. If you are ready to make a difference in the mobile landscape at Gusto, we want you on our team!Here’s what you’ll do day-to-day:Architect, build, test, and enhance Gusto’s native iOS app, along with supporting mobile web views that elevate user experience.Develop, iterate, and refine product features that integrate core business functions, work tools, value-added services, and financial products.Collaborate closely with our product management, design, and partner teams...

About Triumph ArcadeTriumph Arcade enhances the mobile gaming experience by enabling players to wager and win real money, engage in massive multiplayer games, and take part in social tournaments. Our app is recognized as the top-rated in its App Store category, achieving remarkable month-over-month growth in both revenue and active players. As we continue to scale our team, we are excited to introduce innovative products such as Rips, our successful collectibles app. We're just getting started!Supported by leading consumer VCs including Goodwater Capital, General Catalyst, and DraftKings Drive Fund, Triumph Arcade is poised for continued success.

Join Our Team at Triumph ArcadeAt Triumph Arcade, we are revolutionizing mobile gaming by allowing players to wager and win real money, participate in massive multiplayer games, and engage in social tournaments. Our flagship app has rapidly ascended to the top of its App Store category, achieving remarkable month-over-month growth in both revenue and active users. As we continue to expand, we are excited to launch innovative products like Rips, our successful collectibles app that is breaking new ground in the industry.Supported by leading venture capital firms such as Goodwater Capital, General Catalyst, and DraftKings Drive Fund, Triumph Arcade is poised for incredible growth.Your RoleAs a Senior Fullstack Software Engineer on our web development team, you will play a crucial role in driving both revenue and company growth by transforming our successful mobile app into a robust web platform. You will take ownership of our end-to-end web stack, internal tools, and dashboard, building the infrastructure necessary to foster business opportunities. Your initial focus will be to deliver a web version of Rips, setting the groundwork for future web and Android applications. By establishing high standards for this new platform, you will push the limits of what it means to be a leader in our category.Your ResponsibilitiesDevelop and establish our web platform, laying down the foundation and standards for future web and Android applications.Leverage existing backend systems and infrastructure to construct a web version of Rips within a 3-6 month timeframe.Define best practices and standards for React development, with potential opportunities to work on React Native.Oversee the internal tools and dashboard, implementing enhancements that improve team efficiency and facilitate data-driven decision-making.Collaborate with backend engineers to design APIs and data models, contributing to both API architecture and application performance.Enhance user experience through thoughtful motion design, micro-interactions, and responsive design that feels intuitive and native.

Join Airwallex as a Senior Mobile EngineerAt Airwallex, we are redefining the future of global payments and financial solutions. As a Senior Mobile Engineer, you will play a pivotal role in shaping our state-of-the-art mobile applications for both iOS and Android platforms, focusing on delivering an outstanding user experience.Your expertise will drive the development of fully integrated solutions that empower over 200,000 businesses worldwide to efficiently manage their global payments, expenses, and banking needs. You will work with cutting-edge technologies such as SwiftUI, Combine, and Async/Await for iOS, and AndroidX, Coroutines, Hilt, along with various Jetpack libraries for Android.Join a dynamic team of innovators who are passionate about building the future of finance. If you are eager to tackle complex challenges, collaborate with exceptional teammates, and take ownership of your work, we want to hear from you!

Join BitGo, the premier infrastructure provider for digital asset solutions, specializing in custody, wallets, staking, trading, financing, and settlement services from secure regulated cold storage. Established in 2013, we empower our clients to confidently navigate the digital asset landscape. With a vast global footprint and multiple Trust companies, BitGo caters to thousands of institutions, including top-tier brands, exchanges, and millions of retail investors worldwide. As a key player in the digital economy, we process a substantial portion of Bitcoin transactions and stand as the world’s leading independent digital asset custodian and staking provider. Discover more about us at www.bitgo.com.This position requires full-time presence at our San Francisco office to foster collaborative teamwork and innovative problem-solving.We are seeking a talented Mobile Software Engineer with extensive experience in React Native to join our dynamic team and contribute to the development of cross-platform mobile applications that enhance the BitGo experience for our users.