Senior Software Engineer - HSM

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.

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 Point as a Senior Mobile Engineer and be part of a pioneering team dedicated to creating a modern and aspirational banking experience. Our mission is to enhance the everyday debit card by integrating rewarding benefits and features that elevate financial transactions.To learn more about our dynamic team and vibrant culture, please explore here.

We are seeking a highly skilled Senior Infrastructure Engineer to join our dynamic team at Bitgo. In this pivotal role, you will design, implement, and maintain our infrastructure systems, ensuring optimal performance and security. You will collaborate with cross-functional teams to develop innovative solutions and enhance our operational efficiency.Your expertise will be crucial in managing complex infrastructure environments and leveraging automation to streamline processes. If you are passionate about infrastructure engineering and are looking to make a significant impact in a fast-paced, cutting-edge environment, we want to hear from you!

Join Us at Air AppsAt Air Apps, we are driven by the vision to think bigger and act faster. As a family-founded organization, our mission is to revolutionize personal and entrepreneurial planning through our pioneering AI-powered Personal & Entrepreneurial Resource Planner (PRP). We seek your passion and ambition to help us transform the way individuals plan, work, and live. Established in Lisbon, Portugal in 2018, and now with vibrant offices in both Lisbon and San Francisco, we have achieved over 100 million downloads globally while remaining self-funded.Our commitment to long-term innovation challenges the status quo daily, enabling us to push the boundaries of AI-driven solutions that truly make a positive impact. Here, you will be a creative catalyst, shaping products that empower people worldwide.Embark with us on this exciting journey to redefine resource management and transform lives along the way.Position OverviewWe are in search of a React Native Engineer to become an integral part of our team and assist in the development and maintenance of our dynamic mobile applications. Collaborating closely with designers, product managers, and fellow developers, you will craft high-performance applications that captivate our users. Your expertise will be vital in fostering innovation and ensuring that our apps adhere to the highest standards of quality and usability.Please be advised that this posting aims to enrich our talent pool as we prepare to formally launch the position. We will reach out to you as soon as the official job is posted.

BitGo seeks a Product Marketing Manager to lead go-to-market strategies for digital asset solutions. This full-time position is based on-site in San Francisco and focuses on supporting close team collaboration and creative problem-solving. Role overview This role centers on shaping product launches and driving adoption across BitGo’s platform. The scope covers custody, wallets, APIs, and new retail and mobile products. The Product Marketing Manager will work with teams across the company to position products effectively and ensure successful launches. What you will do Develop and execute go-to-market plans for a variety of product lines Collaborate with Product, Marketing, Sales, and Design teams to build strategic positioning Guide product launches and support adoption among target audiences Work across both established and emerging offerings, including custody, wallets, APIs, and mobile experiences Location requirement This position requires working full-time at the San Francisco office.

Join our team at Sage Labs AI as a Senior Mobile Developer specializing in React Native. We are on a mission to revolutionize online shopping with our innovative app, GOLD, an AI-powered shopping assistant that enhances user experiences.As a pivotal member of our engineering team, you will lead the design and development of our flagship iOS app while collaborating with cross-functional teams to deliver exceptional mobile experiences. This role requires a passion for technology and a drive to deliver high-quality products.

Join Known as a Founding Product EngineerLocation: San Francisco, CA (In-Person)Compensation: $150,000 - $200,000 + EquityAt Known, we're redefining how humans connect by utilizing advanced AI technology. Our mission is to enrich lives by fostering authentic connections, guided by the stories our users share.Our users engage deeply with our AI voice agent, averaging 27 minutes of conversation, allowing us to gather profound insights into their lives.Our engineering team consists of innovators who have previously developed some of the most popular AI-driven consumer products such as Uber, Uber Eats, Afterpay, and Cash App.We thrive in a collaborative in-person environment located in Cow Hollow, San Francisco, where hard work and autonomy are highly valued.About the RoleWe are in search of exceptional product engineers to further enhance the Known mobile application. Your role will involve a strong design focus as we aim to be the Apple of dating. Our engineers are meticulous artisans dedicated to quality, as we prioritize a product that is both intentional and distinctly human-centered.You may be a great fit if youHave a primary focus as a React Native engineerHave experience building products with intricate audio and voice functionalitiesAspire to create technology that facilitates a million marriagesExhibit a high level of attention to detailOur InvestorsWe are proudly backed by renowned investors including Eurie Kim and Kirsten Green from Forerunner Ventures (the minds behind Decagon, Faire, and Oura), as well as NFX and PearVC.

About AnythingAnything is revolutionizing how entrepreneurs develop applications with our cutting-edge AI product. Our platform transforms English commands into fully functional apps, encompassing everything needed to monetize online ventures—mobile, web, design, AI, backend, infrastructure, and payment solutions. Since our launch on August 7th, we have achieved a remarkable $5 million in revenue and continue to grow rapidly. Discover more at anything.com.Role OverviewWe are seeking a talented and experienced Mobile Engineer who is passionate about crafting exceptional mobile experiences. Collaborating closely with our design team, you will help shape the user experience through your innovative coding solutions. Your vision of a “superior” mobile experience will guide your work, and you will have the autonomy to bring that vision to life.ResponsibilitiesExecute pixel-perfect implementations of design specificationsDevelop intuitive gestures to enhance user engagementBalance considerations of speed, accuracy, and long-term sustainabilityEngage with users and utilize the product to identify real-world needs and opportunitiesEmbrace challenging tasks to expand your skill set rapidlyFoster a culture of ownership, ambition, and continuous learningOur approach to mobile coding is pioneering, and we greatly value creativity, courage, and flexibility in revising solutions through iterative processes.Success MetricsYour performance will be evaluated based on:1. Self-sufficient problem-solving and executionYou proactively tackle goals, explore uncertainties, assess options, and deliver effective solutions independently.2. Rapid skill progressionYou broaden your technical expertise significantly within the initial months through hands-on projects and intentional learning.3. Impactful product contributionsYour features enhance user satisfaction, application performance, and overall product sophistication in quantifiable and strategic manners.Candidate ProfileIdeal candidates will possess:A solid technical base from a prestigious computer science program or equivalent practical experience with React Native applicationsDemonstrated high standards in mobile user experiencesStrong empathy towards team members and users alike

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 VSCO VSCO (pronounced vis–co) is an innovative platform empowering photographers with essential tools, a vibrant community, and exposure to enhance their creative and professional journeys. We foster a genuine and inspiring environment for photographers at every level, ensuring a space for creative opportunities, inspiration, and connections. Our mission is to support photographers in their endeavors, enabling them to connect with fellow creatives and businesses through a comprehensive suite of creative tools available on mobile and desktop, across our global community. We seek individuals who are motivated and take initiative to elevate our company mission. At VSCO, employees have the chance to make a significant impact, believing that collaboration leads to stronger outcomes than working in isolation. Our core values are foundational to our team culture and influence our hiring practices. Discover more about what it’s like to work at VSCO on our Careers Page. About The Role If you are passionate about React Native development and eager to be part of a dynamic team of creators, we invite you to apply for this role and assist us in empowering creators globally. At VSCO, you will collaborate with talented individuals who share your enthusiasm for innovation and creativity. We are constructing a comprehensive ecosystem of tools for photographers, enhancing our existing offerings while also creating new tools and services. This pivotal role will help define and advance our vision, shaping how our users create, connect, and earn. Join us in influencing the future of mobile, desktop, and web technologies, making a meaningful impact on the global creative community. As a Staff Engineer, you are fundamentally a technologist. You'll engage directly with the team in coding, solving complex problems, and staying updated with the latest technologies. However, your influence extends beyond individual contributions. You will serve as a technical leader, guiding the team through intricate challenges, advocating for best practices, and anticipating future developments to keep the team ahead of the curve. You will consider scalability, long-term maintainability, and future features even while the team is focused on current deliverables. You will mentor engineers, elevate quality standards, and enable the success of others. The Day to Day Lead the development of high-quality, scalable React Native applications while promoting rigorous testing, robust CI practices, and high standards throughout the codebase. Actively engage in coding and problem-solving alongside the team. Mentor junior engineers and foster a collaborative learning environment. Stay abreast of industry trends and best practices.

Join our innovative team at Tendo as a Senior Software Engineer, where you'll play a pivotal role in crafting state-of-the-art healthcare software aimed at enhancing the lives of patients, clinicians, and caregivers. As a key contributor, you will be responsible for developing critical components of a revolutionary new software product that promises to transform healthcare delivery.We seek a highly skilled individual with a strong background in building SaaS and/or Cloud Native applications within regulated industries. Proficiency in technologies such as React, TypeScript, Go, Ent, gRPC, Twirp, and AWS services like EventBridge and Aurora is essential. A passion for sharing knowledge and mentoring fellow team members will be crucial as we expand our talented team.Our ideal candidate thrives in an Agile, collaborative atmosphere where you will work closely with product managers, designers, external partners, and fellow engineers to develop a high-quality, user-centric product from the ground up.

Join General Medicine as a Mobile Engineer!At General Medicine, we are on a mission to revolutionize healthcare access. As a Mobile Engineer, you will play a pivotal role in developing and scaling our innovative healthcare store, simplifying the process of obtaining care. Our platform provides upfront pricing for virtual and in-person visits, prescriptions, labs, imaging, and more, making healthcare more transparent and accessible.Your Role:We are seeking a skilled Mobile Engineer to spearhead the creation of our inaugural native mobile application using React Native. This is a foundational position where you will take the lead in building the app from the ground up, making essential architectural decisions, and establishing frameworks that the rest of our team will utilize.Ideal Candidate:Our ideal candidate has a proven track record of shipping and maintaining React Native applications in a production environment. You should have a strong grasp of the distinctions between React Native and native iOS/Android development. Proficiency in Swift or Kotlin is essential for tasks such as HealthKit integrations, push notifications, or video calling SDKs. While your primary focus will be on TypeScript and React, you should also be open to contributing to our Next.js web frontend, as we view mobile and web as a unified experience.We value technical excellence and are looking for someone who can navigate the balance between speed and quality. Our engineers are proactive, versatile, and often engage in writing product requirements, analyzing SQL data for feature performance, and taking ownership of quality assurance. No task is too small if it contributes to delivering an exceptional product. If you thrive in ambiguous environments and are eager to collaborate closely with design, operations, and clinical teams, we want to hear from you!You don't need a healthcare background, but enthusiasm for tackling the complexities of the American healthcare system, including EHR integration and revenue cycle management, is a plus.

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.

About Sleeper:Sleeper is a dynamic and rapidly growing platform dedicated to transforming the fantasy sports and gaming experience for sports enthusiasts. Initially focused solely on NFL fantasy football, we have diversified our offerings over the past decade to include NBA, LCS, and soccer. With our innovative Sleeper Picks feature, users engage in real-money Daily Fantasy Sports (DFS) by predicting player performances based on projections from trusted third-party sources. As pioneers in the sports gaming sector, we are proudly backed by some of Silicon Valley's leading investors.Role Overview:We are on the lookout for a talented and forward-thinking Senior Frontend Engineer to enhance our team. At Sleeper, we recognize that exceptional and imaginative individuals can effectuate change and create remarkable products, regardless of their technological background. In this role, you will be instrumental in the development of our mobile and web applications, ensuring scalability, reliability, and top-notch quality that will benefit millions of dedicated users daily.Our mobile platform, built on React Native, has been modernized with TypeScript and features top industry packages like react-query, react-navigation, and reanimated. We seek an experienced developer to contribute their expertise in refining our product, introducing new features, enhancing quality, and delivering lightning-fast performance to our vast user base.Responsibilities:Collaborate with design teams to gather user requirements and translate them into detailed technical specifications for our products.Craft clean, maintainable, and efficient code using React Native, TypeScript, and associated libraries (e.g., React Query, Navigation, Reanimated).Create reusable UI components and establish a well-organized component hierarchy within the application.Implement user interface (UI) functionality and logic utilizing React features such as state management, props, hooks, and lifecycle methods.Integrate frontend components with backend services through APIs (RESTful or GraphQL).Diagnose and resolve complex performance issues, socket connections, data caching, and more.Stay informed on the latest developments in React, best practices in mobile development, and accessibility standards.Who You Are:A highly motivated individual with a passion for frontend development and a knack for problem-solving.

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.

About UsAt XOXO, we are a pioneering research lab dedicated to creating the intelligence interface for daily living. Our covert team of expert engineers, designers, and researchers is focused on uncovering innovative solutions to unique challenges that affect life beyond the workplace.With our recent advancements in infrastructure, architecture, and model layers, we are seeking passionate builders to craft the interface and application layers that will actualize our ambitious vision.About the RoleWe are in search of a skilled iOS engineer to develop XOXO's consumer application, featuring a revolutionary interface for intelligence. This role is ideal for an exceptional engineer who can take ownership of the entire mobile experience—from architecture to performance, refinement, and a visually engaging design system that ensures intentionality in every interaction.Your background is less important than your motivation: you possess a strong sense of ownership, operate swiftly without compromising quality, and are eager to create a mobile product that redefines craftsmanship and performance standards.What You’ll DoDesign and launch the initial iterations of our React Native application, transitioning it from prototype to production.Convert a highly visual design system into reusable components, animations, and interaction patterns with smooth performance.Develop new product features that seamlessly integrate modern AI/ML capabilities within the mobile context.Enhance app performance metrics, focusing on rendering, startup time, memory usage, battery consumption, networking, and user-perceived speed.Establish high standards for mobile engineering quality (testing, instrumentation, release discipline) and collaborate closely across the tech stack to deliver comprehensive solutions.Skills & QualificationsMinimum qualifications:A minimum of 3 years of experience in shipping production mobile applications with an unwavering commitment to quality.Extensive knowledge of React Native and Swift, accompanied by a strong understanding of architecture and long-term maintainability.Proven ability to transform a highly visual design system into a fast, pixel-perfect user interface (UI), incorporating components, interaction patterns, and accessibility features.A track record of developing mobile applications that feel instantaneous under real-world constraints (startup time, rendering, memory, battery, networking) and knowing diagnostic techniques for performance issues.

About Quizlet:At Quizlet, we are dedicated to empowering learners to achieve their goals through our innovative learning platform. With a valuation exceeding $1 billion, we engage tens of millions of students each month, including two-thirds of U.S. high school students and half of U.S. college students, facilitating over 2 billion learning interactions monthly.Our approach combines cognitive science with cutting-edge machine learning technologies to create personalized and enriched learning experiences for students, professionals, and lifelong learners. We are driven by the opportunity to support more learners through diverse methodologies and tools.Let’s Build the Future of LearningJoin our mission to design and implement AI-driven learning tools that scale globally and unleash human potential.About the Team:The Quizlet Mobile team is committed to being the leading force in digital learning on mobile platforms. Our team develops and enhances the essential mobile functionalities that make Quizlet a reliable learning partner, covering everything from flashcards and practice modes to AI-enhanced study experiences. We work collaboratively with the wider mobile organization, backend services, design, and product teams to provide seamless, top-quality learning experiences on both iOS and Android devices.About the Role:We are on the lookout for a Staff Engineer to join one of our Mobile teams in San Francisco. In this role, you will lead a team that shapes the core functionalities crucial for keeping learners engaged and successful.You will collaborate closely with engineers, designers, and product managers to deliver exceptional mobile experiences. Your responsibilities will include influencing technical direction, steering architectural decisions, and mentoring fellow engineers while overseeing projects from conception to launch. We seek an individual passionate about crafting intuitive mobile experiences.We are pleased to announce that this is an onsite position at our San Francisco office. To foster teamwork, we require employees to be present in the office a minimum of three days per week: Monday, Wednesday, and Thursday, or as directed by your manager or the company. We believe this arrangement enhances work efficiency, team collaboration, and supports both individual and organizational growth.

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...