Senior Android Engineer at Nestmed | San Francisco

Waymo is a pioneering company in autonomous driving technology, dedicated to becoming the world's most trusted driver. Originating as the Google Self-Driving Car Project in 2009, Waymo has remained focused on developing the Waymo Driver—The World's Most Experienced Driver™—to enhance mobility access while significantly reducing traffic-related fatalities. The Waymo Driver is the backbone of Waymo's fully autonomous ride-hail service and is adaptable across various vehicle platforms and applications. Having completed over ten million rider-only trips, it has amassed experience through more than 100 million miles driven autonomously on public roads and tens of billions of miles simulated across 15+ U.S. states.Waymo's commercial operations currently span five cities, with a robust infrastructure in the early stages of development, necessitating further investment to scale into a world-class service.We are assembling a talented team of engineers to elevate our Android Platform team. This team is responsible for crafting the user interfaces that allow customers to engage with our autonomous vehicles, providing entertainment and information during their rides. As a full-stack team, we oversee the setup and ongoing maintenance of a complete automotive-grade Android system.In this hybrid role, you will report directly to an Engineering Manager.

Join our innovative team at StemXpert1 as an Android Engineer, where you will be at the forefront of mobile application development. You will collaborate with cross-functional teams to design, implement, and maintain high-quality Android applications that deliver exceptional user experiences.

About StravaStrava is the ultimate app for active individuals, boasting a community of over 180 million athletes across more than 185 countries. It transcends simple workout tracking; it's a platform where athletes progress together, fostering new habits and achieving personal bests. Regardless of your sport or tracking method, Strava is your go-to companion. Connect with your community, achieve your goals, and make every effort count. Start your journey with Strava today.Our mission is clear: to inspire individuals to lead their best active lives. We believe in the transformative power of movement to unite and propel people forward.About This RoleWe are looking for a Senior Android Engineer to join the Subscriptions Team, focused on enhancing Strava’s subscription and checkout experiences. You will develop the Android interfaces that facilitate our transition from free to paid options, including paywalls, purchasing flows, and Google Play Store integrations, impacting millions of athletes worldwide. This role is vital to Strava’s growth and provides significant ownership over highly visible product features.In this position, you will collaborate closely with product, design, analytics, and marketing teams, while also engaging with Strava’s extensive Android community through architecture reviews, code reviews, pair programming, and our active Android guild. Join the team behind the leading fitness app and the 2025 Apple Watch App of the Year as we continue to set standards for Android excellence.We follow a flexible hybrid model, requiring you to be on-site in our San Francisco office for three days a week.What You’ll Do:Lead the Android initiatives on the Subscriptions team, establishing the technical vision and delivering features that impact millions.Drive Strava’s subscription growth through lifecycle experimentation including upsells and checkout enhancements.Maintain and improve our Google Play Billing integration, ensuring critical business processes are stable and reliable.Collaborate closely with product and design teams to deliver polished features in small, focused increments.Mentor fellow engineers through code reviews and pair programming, setting the standard for Android quality across the organization.Leverage the latest AI tools to identify efficient and innovative software development methods.

Join Substack as an Android Engineer and help us build a vibrant community for writers and readers. In this role, you will develop and enhance our Android application, ensuring that it provides the best possible experience for our users. You will collaborate closely with product managers, designers, and other engineers to deliver high-quality features and improvements.

Join Our Innovative TeamThe ChatGPT team at OpenAI is at the forefront of our mission to innovate across core domains, including Growth, Personalization, and Search Infrastructure. We are expanding our talented teams to create cutting-edge experiences, tools, and systems that enhance ChatGPT's functionality across all user platforms.Your Role as an Android EngineerWe are seeking a skilled Android Software Engineer to take the lead in developing exciting new features for the ChatGPT Android application.Key Responsibilities:Craft and implement innovative features and functionalities for the ChatGPT Android app.Set and uphold rigorous engineering standards focusing on performance, reliability, and code quality.Collaborate with cross-functional teams to design user-centric experiences.Influence technical decisions and establish a robust long-term architecture for mobile platforms.Provide mentorship and guidance to peers through code reviews and shared ownership.Ideal Candidate Attributes:Proficient in Android development using Kotlin/Java, modern architectural patterns, and Jetpack.A passion for enhancing mobile UX and optimizing system performance.Thrives in dynamic, collaborative environments.We are open to candidates in San Francisco, New York, and Seattle.About OpenAIOpenAI is a pioneering AI research and deployment organization dedicated to ensuring that general-purpose artificial intelligence serves the interests of humanity. We actively push the boundaries of AI capabilities while prioritizing safety and human-centric design in all our products. Our commitment to inclusivity drives our mission to incorporate diverse perspectives, experiences, and voices, reflecting the full spectrum of humanity.We are proud to be an equal opportunity employer, embracing diversity and ensuring that all individuals are treated fairly, regardless of race, religion, gender, or any other protected characteristic.

About the TeamAt OpenAI, our Applications Engineering organization is at the forefront of transforming groundbreaking research into user-friendly products that reach millions globally. The Applied Foundations team is pivotal, managing the essential product and platform layers that enable seamless user experiences—from identity and access management to safety, payments, and commerce across all our applications. Our diverse teams collaborate across product engineering, infrastructure, and safety, ensuring that we deliver technology that is not only reliable but also secure and trusted on a global scale.About the RoleAs a Senior Android Engineer on the Applied Foundations team, you will play a critical role in developing the core mobile experiences that facilitate user sign-up, account management, family features, service payments, and secure interactions with OpenAI’s suite of products. This position emphasizes the creation of high-quality products and reusable Android foundations that empower product teams across various OpenAI apps to expedite their delivery while adhering to the highest standards of security, reliability, and user trust. You will manage intricate client-side systems encompassing UI, networking, local state, payment integrations, and Apple platform integrations, collaborating closely with backend, product, and safety partners to architect a robust mobile ecosystem for OpenAI on a global scale.You may be an ideal candidate if you:Possess 4+ years of professional software engineering experience.Have a strong portfolio demonstrating high-quality Android applications in production.Are proficient in Kotlin (and/or Java) and are well-versed in Android development tools and architecture components.Prioritize performance, security, and user experience in your mobile development process.Enjoy cross-functional collaboration to bring innovative product ideas to fruition.Are passionate about enhancing performance, security, and overall user experience.

About UsAt XOXO AI, we are a cutting-edge research lab dedicated to creating intelligent interfaces that enhance everyday life. Our stealth team comprises passionate engineers, designers, and researchers who are committed to solving innovative challenges that extend beyond the workplace.Following a recent breakthrough in infrastructure, architecture, and model layers, we are eager to welcome talented builders to craft the interface and application layer that will realize our ambitious vision.About the RoleWe are seeking an experienced Android engineer to lead the development of XOXO's consumer app, featuring a revolutionary interface for intelligence. This position is ideal for a highly skilled engineer who can take ownership of the entire mobile experience, focusing on architecture, performance, refinement, and a visually engaging design system that ensures intentionality in every interaction.Your background is less important than your drive: you should possess a strong sense of ownership, be able to work swiftly without compromising quality, and be eager to create a mobile product that redefines excellence in both craft and performance.What You’ll DoDesign and launch the initial versions of our React Native app, guiding it from prototype to production.Convert a highly visual design system into reusable components, motion, and interaction patterns with seamless performance.Develop new product surfaces that integrate modern AI/ML capabilities in a user-friendly manner on mobile.Enhance the app's performance across various dimensions: rendering, startup time, memory usage, battery efficiency, networking, and perceived speed.Establish high standards for mobile engineering quality (testing, instrumentation, release discipline) and collaborate closely across the tech stack to deliver comprehensive solutions.

Join Reddit's dynamic Brand Ad Formats team as an Android Software Engineer, where you'll be instrumental in shaping innovative ad experiences for millions of users. Your role will involve developing impactful ad formats, enhancing the performance of Reddit’s Android app, and collaborating with cross-functional teams to tackle complex challenges. We are seeking a product-focused engineer who is eager to push the boundaries of advertising technology and elevate user engagement through creativity and technical expertise.

Join our innovative team at Twitter Inc. as a Staff Android Engineer and be at the forefront of mobile technology development. In this dynamic role, you will leverage your expertise in Android development to create exceptional user experiences. We are looking for passionate individuals who thrive in a fast-paced environment and are ready to take on exciting challenges.

Join Reddit's Test Engineering team as a Senior Software Engineer, where you will play a pivotal role in ensuring the highest quality of software features. Collaborate with cross-functional teams to design and implement robust test automation frameworks and tools, while fostering a culture of quality across all engineering initiatives. Your expertise will help identify testing gaps and drive systemic improvements, enhancing our testing processes and infrastructure stability.

Be Part of the E-Commerce Revolution with Whatnot!Whatnot is the premier live shopping platform in North America and Europe, dedicated to enabling users to buy, sell, and explore their passions. We’re transforming the landscape of e-commerce by merging community engagement with shopping and entertainment in a tailored environment. Our remote, co-located teams are driven by innovation and guided by our core values. With operational hubs across the US, UK, Germany, Ireland, and Poland, we are collectively shaping the future of online marketplaces.From fashion, beauty, electronics to collectible items like trading cards and comic books, our live auctions cater to a diverse audience.And we’re just beginning! As one of the fastest-growing marketplaces, we seek innovative, proactive problem solvers across all departments. Stay updated on our journey via our news and engineering blogs, and help us empower individuals to transform their passions into thriving businesses while fostering community through commerce. Your RoleWe are excited to welcome Android Engineers to our Growth teams, focusing on both Seller and Buyer Growth at Whatnot.The Seller Growth Engineering team is dedicated to helping sellers convert their hobbies into successful enterprises by building intuitive tools and systems for onboarding and scaling their businesses on the platform.Buyer Growth is essential for Whatnot’s top-of-funnel success, emphasizing user acquisition, activation, retention, and re-engagement. This team collaborates closely with Product, Data, Design, and Marketing to seamlessly integrate new users into our ecosystem and foster loyalty.As an Android Engineer on the Growth team, you will create and enhance mobile experiences that are foundational to both seller and buyer engagement, focusing on scalability and trust. Your contributions will directly influence how thousands of new users find, start, and thrive on Whatnot every week.Build high-quality Android features using Kotlin and Jetpack Compose that enhance seller onboarding, verification, and incentive processes.Work collaboratively with product, design, and backend teams to establish goals, define project scopes, and navigate technical challenges.Collaborate with data science teams to design and analyze experiments that inform product decisions.

About Reddit Reddit is a community platform where people gather around shared interests and real conversations. With more than 100,000 active communities and about 121 million daily unique visitors, Reddit stands among the largest information sources online. Learn more at www.redditinc.com. Team Overview: Android Platform The Android Platform team shapes the technical direction for Reddit’s Android experience. This group designs, builds, and maintains the Reddit Android app and its supporting ecosystem, covering libraries, frameworks, observability, and CI tooling. Their work enables all teams to deliver new features and improvements to millions of users. Role Overview: Staff Android Engineer (Client Platform) This Staff Android Engineer role calls for technical leadership within Reddit’s Android organization. The focus centers on three main areas: Client Health (crashes, ANRs, performance), Developer Experience, and App Architecture. Key Responsibilities Architect the future of Reddit’s Android app to support over 100 million daily active users. Improve the Android developer experience by building tools, workflows, and CI integrations that streamline development and deployment. Set up and enforce guardrails such as lint/static analysis, tests, and AI-assisted reviews to catch common issues early in the process. Develop and enhance frameworks for Android client health and observability, including events, traces, and dashboards, to help teams deliver better user experiences. Integrate AI strategies into engineering workflows, such as code reviews and static analysis, to increase productivity. Mentor and support other Android engineers through design reviews, documentation, and sharing platform knowledge. What Reddit Looks For At least 8 years of professional software engineering experience, with a strong background in Android development. Location San Francisco, CA

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.

AllTrails brings together millions of outdoor enthusiasts, offering an extensive library of trails and resources to support outdoor adventures. The platform aims to make nature accessible to everyone and encourages responsible enjoyment of the outdoors. Role overview The Android Engineer position at AllTrails is fully remote within the United States. While applicants from across the country are welcome, there is a preference for those based near San Francisco CA, Portland OR, Seattle WA, Denver CO, or New York NY. Living near these cities can make it easier to participate in Trail Days, collaborative meetings, and community events, though remote work remains the standard. Employees located in San Francisco are invited to visit the office once a week for in-person collaboration. This role combines the flexibility of remote work with opportunities to connect with colleagues and the broader AllTrails community.

About UsOur mission is to revolutionize language learning.Learning a new language can be transformative, unlocking opportunities to explore diverse cultures, career paths, and communities. With two billion people worldwide striving to learn a language, the most effective method—personalized one-on-one tutoring—remains difficult to access at scale and has seen little innovation for decades. Speak is pioneering an AI-driven tutor that fits in your pocket, offering a conversation-first approach that enables learners to engage in dialogue, receive immediate feedback, and progress through thoughtfully crafted lessons. This leads to a comprehensive journey from novice to confident speaker across numerous languages.Since our launch in South Korea in 2019, Speak has emerged as the leading language learning app, expanding our reach to learners across various markets and 15+ languages. As one of the foremost AI companies globally, we have secured over $150 million in venture funding from prominent investors including OpenAI, Accel, Founders Fund, and Khosla Ventures, with a diverse team distributed across San Francisco, Seoul, Tokyo, Taipei, and Ljubljana.About This RoleAs an Android Engineer on Speak’s engineering team, you will play a pivotal role in enhancing our content delivery, conducting A/B tests on monetization strategies, and supporting the launch of new markets and languages. You will collaborate closely with backend engineers and our Product and Design partners, delivering product features to millions of users.Your ResponsibilitiesDevelop growth mechanisms, including referral systems and in-app sharing features.Enhance new user acquisition and retention strategies.Work on pricing and packaging strategies.Assist in launching new markets and languages.Refine our text-to-speech capabilities.Improve our audio and video streaming systems.QualificationsA minimum of 3 years of industry experience as a Mobile Engineer, ideally in a dynamic startup environment.Bonus: Experience working on an app that has reached 1 million users.Strong proficiency in Kotlin, with an in-depth understanding of mobile architectures such as MVC/MVVM.Bonus: Experience with Jetpack Compose.Bonus: Familiarity with mobile streaming technologies.

Amplitude stands as the premier AI analytics platform, empowering over 4,700 clients—including industry leaders like Atlassian, Burger King, NBCUniversal, Square, and Under Armour—to create superior products and digital experiences. Our platform integrates powerful AI Agents, enabling teams to analyze, test, and optimize user experiences with unprecedented speed. Recognized as the top solution across various categories in G2’s Fall 2025 Report, Amplitude excels for product, data, and marketing teams alike. Discover more at amplitude.com.At Amplitude, we prioritize delivering value to our customers through our core values. We foster an environment rooted in humility, ownership, and a growth mindset, ensuring that our customers remain at the heart of our endeavors.Commitment to Diversity, Equity, and Inclusion (DEI): Amplitude recognizes that diversity enhances product development, problem-solving, and solution effectiveness. We are dedicated to cultivating an inclusive atmosphere—centered on psychological safety, empathy, and human connection—where employees from all backgrounds can thrive.The Developer Experience (DX) team at Amplitude is responsible for building and maintaining the essential frameworks that facilitate developer integration, extension, and trust in Amplitude across various platforms. Our mission is to ensure that Amplitude's SDKs are reliable, user-friendly, and enjoyable to work with, allowing customers to instrument their products confidently and extract insights at scale.We are in search of a Staff Software Engineer specializing in Android to take on a pivotal technical leadership position within our DevEx team. In this role, you will be instrumental in designing and developing Amplitude’s core Android SDKs, including Analytics and Session Replay, and serve as the go-to Android platform expert for other SDK teams, such as Experiment, Guides, and Surveys.As a Staff Engineer, you will operate within a broad scope and with significant impact: setting the technical vision for the Android platform, steering cross-SDK architecture, enhancing performance and reliability, and elevating the developer experience throughout Amplitude’s mobile ecosystem.

Join our dynamic team at Sonsoft Inc. as an Android Architect. In this pivotal role, you will lead the design and development of innovative Android applications that enhance user experiences. Your expertise will guide our mobile development efforts, ensuring that our applications are not only functional but also scalable and maintainable.As an Android Architect, you will collaborate closely with cross-functional teams, including UX/UI designers, product managers, and backend developers, to create seamless integration between frontend and backend services. This is an exciting opportunity to shape our mobile strategy and mentor junior developers.

Join our dynamic team at 360 IT Professionals as a Senior Android Developer! In this role, you will play a crucial part in designing, developing, and implementing innovative mobile applications. You will collaborate with cross-functional teams to define app features and ensure high performance and quality standards.

Join our innovative team at StemXpert as an Android Developer. In this role, you will be responsible for designing and developing cutting-edge mobile applications that enhance user experience. You will collaborate with cross-functional teams to define, design, and ship new features, while maintaining a high standard of quality for our applications.