Mid-Senior Android Developer

Join Duolingo as a Senior Android Engineer focused on enhancing our app builds! In this role, you will collaborate with cross-functional teams to design, develop, and implement innovative features for our Android applications. We are looking for an individual who is passionate about mobile technology and dedicated to delivering a great user experience.

At Duolingo, our mission is to revolutionize education by making it accessible to everyone worldwide. As a Senior Android Engineer, you will play a pivotal role in creating engaging features that enhance our core learning experiences. Collaborate with a team dedicated to innovative solutions and data-driven decision-making, while participating in exciting projects that impact our users and their language-learning journeys. Join us in our quest to empower over half a billion learners globally!

Join The New York Times as a Senior Android Engineer, where you will play a key role in enhancing our mobile applications that deliver engaging news and experiences to our subscribers. Collaborate with talented teams to develop innovative features across various platforms, ensuring our mission of delivering truth and insight remains paramount. This hybrid position based in our New York City headquarters offers a unique opportunity to impact the future of journalism through technology.

About KnotAt Knot, we are on a mission to revolutionize the way consumers and businesses experience financial connectivity. Think of us as the "Plaid for merchant connectivity." Our innovative platform seamlessly links merchants to a variety of applications that consumers and businesses use daily. Our flagship product, CardSwitcher, empowers consumers to effortlessly manage and update their payment methods across online merchant accounts like Netflix and PayPal. Additionally, our cutting-edge products such as TransactionLink enable users to access detailed transaction data, while AgenticShopping facilitates seamless, one-click shopping experiences.Founded in 2021 by innovative brothers and Thiel Fellows, Rory and Kieran O’Reilly, Knot is already powering connected online payment solutions for hundreds of thousands of users. Major companies such as American Express, PayPal, Current, BILT, and Step leverage Knot’s robust SDK to deliver unparalleled customer experiences.We are proud to be backed by a prestigious group of investors, including Nava Ventures, 8VC, American Express, and many industry-leading entrepreneurs from companies like Twitter, Warby Parker, and DraftKings.About the RoleWe are seeking a dynamic Senior Android Engineer who thrives on tackling performance challenges and deep debugging. You will play a pivotal role in architecting and optimizing our Android SDK, which powers essential applications for some of the largest players in the FinTech space.Your responsibilities will encompass the entire lifecycle of our Android SDK, from inception to deployment. You will be instrumental in shaping performance profiling, identifying issues pre-release, testing our public APIs, and creating comprehensive documentation that ensures easy integration. You will collaborate closely with cross-functional product and engineering teams and serve as an advocate for our SDK both internally and externally.

Role overview SeatGeek is looking for a Senior Android Mobile Engineer to help build and refine our mobile applications. This role focuses on creating smooth, reliable experiences for people who use our platform on Android devices. What you will do Develop new features and improve existing functionality in our Android apps Collaborate closely with other engineers and team members to deliver high-quality mobile solutions Apply Android development expertise to solve technical challenges and support ongoing innovation Location This position is based in New York, New York.

About Whop:Whop is an innovative financial technology firm dedicated to empowering individuals and businesses with the tools to achieve sustainable income. Our goal is to build the world’s largest online marketplace, enabling seamless creation, connection, and transactions all in one platform. Currently, we facilitate over $3 billion in annual payouts across 144 countries, with our gross transaction volume growing approximately 25% month over month.Backed by significant investment from top-tier institutional investors including Insight, Bain Capital Ventures, and Peter Thiel, Whop continues to expand its influence in the fintech space, highlighted by a recent strategic investment from Tether, the largest stablecoin provider globally.Our team is a dynamic group of young entrepreneurs, with over 75% having launched their own businesses prior to joining Whop. Our product leaders hail from esteemed companies like Meta and Robinhood, fostering an environment rich in innovation and ambition.For more details, visit whop.com.

Reddit is a vibrant ecosystem of communities centered around shared interests, fostering authentic conversations that matter. With over 100,000 active communities and approximately 116 million daily unique visitors, Reddit stands as one of the premier platforms for information exchange on the internet. To learn more, please visit www.redditinc.com.The Quality Engineering (QE) team at Reddit is in search of a talented Senior Software Engineer to join our Android Test Engineering group. In this role, you will collaborate closely with cross-functional teams to design and develop innovative tools and comprehensive testing frameworks that uphold the highest quality standards. Our mission is to empower all engineering teams at Reddit by providing robust testing solutions that drive quality across the software development lifecycle.

Company OverviewCredit Genie is a pioneering mobile-first financial wellness platform that empowers individuals to take charge of their financial futures. Utilizing cutting-edge artificial intelligence, we deliver personalized insights and are creating a comprehensive financial ecosystem that offers instant access to cash and credit-building tools. Our mission is to enable every customer to achieve lasting financial stability.Founded in 2019 by Ed Harycki, the former founder of Swift Capital (acquired by PayPal in 2017), Credit Genie is backed by Khosla Ventures and led by a team of industry veterans from renowned companies like PayPal, Square, and Cash App. We are strategically positioned to revolutionize inclusive finance through innovative technology and customer-focused solutions.Position OverviewWe are seeking a Senior Android Engineer to architect and enhance our mobile applications in alignment with our growth objectives over the next 2-3 years. The ideal candidate will have a strong background in leading the design and development of high-quality, stable, and low-latency mobile applications.If you are passionate about creating exceptional Android applications and thrive on building new products and features, we want to hear from you! In this role, you will spearhead key aspects of our mobile app as we venture into new product domains. You will collaborate closely with cross-functional teams to ensure our mobile app scales and evolves to meet the demands of millions of users.Key ResponsibilitiesCollaborate with designers, product managers, and engineers to architect new products and establish a compelling user experience that functions seamlessly within an Android mobile app.Provide expertise in Android mobile app development to enhance the team's coding practices, design patterns, deployment processes, and overall user experience.Engage with stakeholders from product, marketing, and other departments on initiatives that align with our key performance indicators and business priorities.Write clean, readable, and reusable code for app design, features, components, and integrations.Contribute throughout all phases of the development lifecycle.Participate in standard engineering practices including code reviews, stand-ups, planning meetings, and product/technology demonstrations.Stay updated on emerging technologies and industry trends, evaluating their potential impact on our platform.

Jahnel Group builds advanced and engaging software applications for clients across the United States. With over 100 employees, the team values a close-knit culture and has been recognized on the INC 5000 list of fastest-growing companies. The company is based in Schenectady, New York, and offers remote work options. Role Overview The Senior Android Engineer will join a team focused on developing a modern enterprise mobile app. This role is best suited for someone who enjoys working within established, production-scale systems and values stability, performance, and maintainability. Collaboration with Product, Design, QA, and backend teams is central to the work. What You Will Do Design, build, and maintain Android features using Kotlin and Jetpack Compose, always aiming for clean implementation and long-term maintainability within an established architecture. Manage feature delivery end-to-end in a cross-functional team, upholding high standards through code reviews, testing, and strong engineering practices. Work closely with Android, iOS, backend, QA, and Mobile Service Layer/BFF teams to ensure a cohesive user experience. Identify and resolve performance, memory, and stability issues in a live enterprise environment. Use root-cause analysis to implement durable solutions that improve reliability, responsiveness, and scalability. Refactor and enhance existing Android systems to maintain architectural integrity. Promote clean, modern Android development practices within a structured, production-grade environment. Who Thrives Here Engineers who are passionate about Kotlin, Jetpack Compose, and building reliable mobile experiences in mature codebases will feel at home. The team values those who prioritize stability and quality, and who enjoy collaborating across disciplines to deliver strong results.

About SunoAt Suno, we are revolutionizing the music landscape by transforming imagination into sound. Our state-of-the-art music generation platform empowers users of all backgrounds to craft studio-quality songs featuring original beats, instruments, and vocals. We are also developing a unique ecosystem of musical experiences, including Suno Studio for professional audio editing and Hooks, an innovative way to create and share vibrant music videos.Founded by passionate Harvard alumni just two years ago, Suno has rapidly ascended to a valuation of $2.45 billion, achieving $200 million in subscription revenue and securing $375 million in venture capital funding. With over 100 million songs created through our platform, our diverse team of 150 bandmates collaborates across offices in Boston/Cambridge, Venice Beach, San Francisco, and New York City.Our Android team, boasting over 10 million downloads and an impressive 4.9 rating, is instrumental in shaping our product's future and driving our company's success.About the RoleWe are seeking skilled Android developers to join our dynamic mobile team. In this role, you will collaborate with seasoned engineers to enhance Suno's Android application, enabling music creation for millions of users.Listen to the Suno song we crafted for this role: https://suno.com/s/oEdmOtkZDLHCopSGWhat You’ll DoDesign and develop Suno’s Android app for an immersive music creation, exploration, and listening experience.Build foundational abstractions and libraries for interactive, high-performance media experiences.Take ownership of feature development from conception to execution.Play a key role in design and product decision-making across the app.Enhance the performance, aesthetics, and user experience of our products.What You’ll NeedA minimum of 3 years of professional experience in Android application development.Proficient in Kotlin and solid understanding of Android fundamentals.Experience with modern Android frameworks and libraries.Ability to work collaboratively in a fast-paced, agile environment.A passion for music and technology, and a desire to innovate.

Senior Android EngineerCompany OverviewFuku is a pioneering organization committed to empowering individuals through engaging, adaptive, and enjoyable learning experiences. With a robust subscriber base of hundreds of thousands and a profitable business model, we pride ourselves on fostering a culture of adventure, excellence, generosity, and candor. Join our dynamic team of respected professionals, including former founders and senior engineers from leading tech companies, as we revolutionize the world of education.Key Job Information- Location: New York City / San Francisco / Remote (US-based)- Work Type: Remote- Employment Type: Full-Time- Experience Required: 5+ years- Salary Range: $180,000 – $240,000 per year- Visa Sponsorship: H-1B, O-1, OPTRole SummaryAs one of our key Android engineers, you will take on significant responsibility for the Android product, directly influencing the educational journeys of millions. Collaborate within a small, elite team alongside Product, Design, and Data to create compelling experiences with Kotlin and Jetpack Compose. Help us shape the future of interactive education by developing tools that simplify complex subjects for learners around the globe.Key Responsibilities- Design, develop, and deploy new Android features from inception to launch.- Work collaboratively with Product, Design, and Data to optimize user engagement and satisfaction.- Contribute to codebases across Android, iOS, and potentially web platforms.- Ensure a balance between technical excellence and business impact—building the right solutions in the right way.- Demonstrate autonomy and technical leadership in decision-making processes.- Champion improvements to both developer and learner experiences.- Uphold a culture grounded in candor, excellence, and accountability.- Always consider the learner's perspective in your work.RequirementsMust-Have:- 5+ years of professional experience in software engineering.- Proficient in Kotlin and Jetpack Compose.- Proven success in delivering end-to-end features.- Strategic mindset balancing technical and business aspects.- Strong collaboration skills, with a focus on product and user experience.- Ability to write clear, maintainable code that is easy for others to understand.- Interest in AI tools and productivity enhancements.- Openness to mentoring others and being mentored.Preferred:- Experience in interactive learning environments, consumer mobile products, or rapidly growing startups.Engineering Culture- Join an elite, AI-driven engineering team with a commitment to speed, impact, and ownership.- We prioritize outcomes over outputs—focusing on user value rather than mere task completion.- Our culture is built on high standards, trust, and mutual accountability.Compensation & Benefits- Salary: $180,000 – $240,000 per year- Comprehensive health benefits, including Health Insurance and 401k

About Aura: Aura is dedicated to forging deeper connections between people through cherished photos, videos, and memories. As the premier brand in WiFi-connected digital picture frames, our diverse range of products consistently receives accolades from esteemed sources such as Wirecutter, The Strategist, WIRED, and Oprah. With a stunning display, effortless software updates, and an intuitive app, Aura simplifies the sharing and showcasing of favorite moments in frames that seamlessly fit any home decor. Located in New York City, we boast a team of innovative, data-driven, and creative professionals who prioritize delivering top-notch digital frames. Our commitment to innovation allows us to continually explore new technologies and product enhancements, ensuring that our customers enjoy the best photo-sharing experience. This genuine passion for our products, coupled with our unwavering dedication to customer satisfaction, has fueled our sustainable and profitable growth. Currently, Aura frames display billions of photos globally, helping people feel closer to their loved ones, no matter the distance. Your Role: As a vital member of our expanding Product Engineering team, you will collaborate closely with designers and product managers to develop new features, enhance user experiences, and deploy app updates to millions of satisfied users. Our applications serve as the primary interface for our products, and we are seeking an individual who adopts a customer-centric engineering mindset. We believe in placing our customers and their needs at the forefront of every technical decision, with an unwavering focus on delivering excellence. In this small team environment, you will take on significant responsibilities across various crucial projects, with a culture that values rapid iteration and close collaboration. Technology Stack: Our Android mobile app utilizes a hybrid of Kotlin and Java. We have engineered an efficient photo upload pipeline that operates seamlessly in both foreground and background modes, ensuring our users' photos are processed effortlessly. Additionally, we maintain a robust communication stack using Bluetooth and WiFi to provide intuitive management of our hardware devices. Our frame runs an Android application that shares code with our mobile app, facilitating a connected experience for feature development and bug resolution. Our web app and the ability to email photos to frames further enhance connectivity for our customers. What You Will Love About This Opportunity: Take ownership of projects from initial code development to testing and deployment, ensuring a direct impact on user experiences.

Join mlabs as a Mobile App Engineer and be part of a groundbreaking initiative to reshape the future of finance through our next-generation mobile trading platform. This innovative platform goes beyond conventional retail applications, providing a comprehensive trading experience featuring live market data, complex order types, and multi-venue execution.As a Mobile Engineer, you will harness the capabilities of professional trading terminals, adapting them for mobile use. You will tackle sophisticated engineering challenges, including maintaining synchronized real-time price feeds and ensuring system performance remains robust during high market volatility. This role is perfect for a developer who thrives in high-bandwidth, in-person collaborative settings and is eager to build ambitious systems from the ground up.

Join our innovative team at Sonsoft Inc. as an Android Development Analyst. In this role, you will leverage your expertise in Android development to enhance and optimize our mobile applications, ensuring a seamless user experience. You will collaborate closely with cross-functional teams to design, develop, and implement new features while maintaining high performance and reliability of our Android applications.

Join Whatnot as an Android Engineer and play a pivotal role in shaping the future of our mobile platform. You will be responsible for designing, developing, and maintaining high-quality Android applications that enhance user experiences. Collaborate closely with cross-functional teams to deliver innovative solutions that meet our customers' needs.

About SunoSuno is at the forefront of the music technology industry, dedicated to unleashing creativity where imagination transforms into sound. Our flagship product harnesses cutting-edge music-generation technology, empowering users of all skill levels to craft professional-grade songs featuring unique beats, instruments, and vocal tracks. We are also developing an innovative ecosystem of musical experiences, including Suno Studio, our advanced audio editing platform, and Hooks, a revolutionary tool for creating and sharing dynamic music videos.Founded by passionate Harvard alumni just two years ago, Suno has rapidly evolved, achieving $200 million in subscription revenue and establishing itself as one of the fastest-growing AI startups globally. As of November 2025, we are valued at $2.45 billion with $375 million in VC funding. Currently, over 100 million users have created music with us, and our talented team of 150 collaborators operates from vibrant locations including Boston/Cambridge, Venice Beach, San Francisco, and New York City.With over 10 million downloads on the Play Store and a stellar 4.9 rating, our Android team is crucial in shaping our product's future and driving Suno's success.About the RoleWe are seeking pioneering members to join our Android team. You will collaborate closely with our founding team, taking ownership of a diverse range of technical and design decisions for the Suno Android application.Listen to the Suno song we created about this role: https://suno.com/s/oEdmOtkZDLHCopSGYour ResponsibilitiesDesign and develop the Suno Android application for music creation, exploration, and listening.Build foundational abstractions and libraries that facilitate high-performance, interactive media experiences.Lead feature development from conception to implementation and beyond.Contribute to design and product strategy across the application.Enhance the performance, aesthetics, and overall user experience of our products.Qualifications5+ years of experience in delivering production-level Android applications.Proficient in Kotlin with a deep understanding of Android development.Familiarity with modern Android development frameworks and industry best practices.Experience with performance optimization and a keen eye for user-centric design.Strong problem-solving skills and a passion for music technology.

About Hook MusicHook Music is an innovative social music platform, supported by leading investors, dedicated to revolutionizing music discovery, fan engagement, and creator development. We transform beloved songs into interactive experiences, allowing fans and creators to reimagine music through user-friendly, remix-capable features that require no prior knowledge. By collaborating directly with artists, labels, and rights holders, Hook Music guarantees that music is shared and expressed in ways that honor and compensate the creators behind it. At Hook, music is not merely consumed; it is experienced, expressed, and personalized.Role OverviewWe are seeking an Android Engineer to spearhead the development of Hook Music’s Android application from inception. You will play a crucial role in adapting our core iOS experience for Android users while ensuring the app maintains a native feel, optimal speed, and thoughtful design tailored for the platform.In this pivotal, 0→1 role, you will work closely with product managers, designers, backend developers, AI specialists, and iOS engineers to define the architecture, deliver promptly, and iterate towards achieving product-market fit on the Android platform. We are looking for an individual who is deeply passionate about quality, performance, and user experience, particularly within media-rich, social contexts.ResponsibilitiesDesign, develop, and sustain Hook Music’s Android application utilizing contemporary Android frameworks.Convert product and design specifications into high-quality, scalable implementations.Guarantee exceptional application performance across media playback, creation workflows, and social feeds.Collaborate closely with backend engineers to establish clear API contracts.Work cross-functionally with product and design teams to enhance user experience and deploy updates iteratively.Implement Android engineering best practices, design patterns, and coding standards.Monitor application performance, stability, and crash metrics to continuously enhance quality.Participate in technical decisions regarding architecture, tools, and release procedures.Required QualificationsMinimum of 4 years of experience in Android development.Strong expertise in Kotlin and modern Android development techniques (e.g., Jetpack Compose, Coroutines, Flow).Demonstrated experience in architecting and deploying production-ready applications.

Join our innovative team at Rain as an Android Engineer, where you will play a pivotal role in developing cutting-edge mobile applications. You will collaborate with cross-functional teams to design, build, and maintain high-performance Android applications.

Join our team at Sonsoft Inc. as an Android Developer and contribute to innovative mobile solutions that impact users globally. You will collaborate with a dynamic team to design, develop, and maintain high-quality Android applications. Your expertise will play a crucial role in enhancing user experience and implementing the latest technologies.