Mobile Developer Jobs

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. The Video Team is responsible for adaptive video playback and rendering, screen recording, camera capture, live video, video ads, video transcoding, and moderation. We develop on mobile, desktops, consoles, web, and our backend microservices platform. This is a hands-on role focused on Android with the opportunity to work across all the areas. This role is not a video codec research or implementation position; we only use industry-standard codecs. You Will: Design, develop, use AI/LLMs, optimize, and debug video capture, encoding, playback, and rendering focused on the Android platform using NDK APIs like Vulkan and AMediaCodec. Innovate, architect, and implement our vision for video in a 3D immersive environment. Have the opportunity to work across our platforms (desktop, mobile, and consoles). Have the opportunity to work on our backend microservices Collaborate with different teams all across Roblox to develop new uses of video. Be guided to create state of the art video tech for gaming industry You Are: An experienced engineer with 8+ years of designing, developing, and debugging complex C++ applications running on Android. An expert with the wide variety of Android devices from junk to

About the Team DoorDash is building the world's most reliable on-demand, logistics engine for delivery! We're looking for experienced engineers to join our fast-growing engineering team to help us develop a 24x7, global infrastructure system that powers DoorDash’s three-sided marketplace of consumers, merchants, and dashers. About the Role DoorDash is building the world's most reliable on-demand, logistics engine for delivery. We are continuing to grow rapidly and expanding our Engineering offices globally! We are looking for Android Engineers to build and maintain a large scale 24x7 global infrastructure system that powers DoorDash's 3-sided marketplace of Consumers, Merchants and Dashers. Android Engineers at DoorDash work on building an app that's used by millions of people and critical to local entrepreneurs building their online presence. We've seen significant growth in our codebase and number of developers and we'd love for you to bring a piece of your culture and experiences into ours so that we can continue to improve our processes and architecture. Whether you're an engineer interested in scaling our mobile infrastructure or building awesome product features, we'd love to talk to you! This role is hybrid with some in-office time expected and will report to an Engineering Manager. You're excited about this opportunity because you will... Work within our engineering teams to build exciting features Improve our code base through continuous refactoring Solve challenging real-time data transfer and synchronization problems Extend and implement our APIs Implement unit tests Keep up-to-date with the industry standards of Android development We're excited about you because you have... B.S., M.S., or PhD. in Computer Science or equivalent 2+ years of industry experience Expert at developing within Android SDK in a product environment Systems and OOP knowledge Expertise with Android testing best practices and frameworks. Experience building, launching, a

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world’s largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone’s reach while doing the most important work of your career. About the team Stripe Terminal helps our users extend their online presence to the physical world. The Terminal team’s mission is to make it as easy for businesses to accept in-person payments as the Stripe API has done for online payments. Stripe was founded to make it easier for developers to accept payments. We’ve solved a small part of that problem, but our ambition is to go much further. What you’ll do You'll build and enhance applications, services, and the OS that run on the physical Terminal devices. You'll also build the frameworks for other engineers, both internal and external to Stripe, to develop on our custom platform with ease. Responsibilities Design, build, and maintain Android apps and SDKs in Kotlin Develop Android payment applications for a variety of devices and form factors Work with engineers, product managers, designers, and stakeholders across the company to bring new features and products to mobile users Collaborate with Android developers who work on the Stripe mobile apps and Stripe Terminal to set best practices for Android development across the company Work with user research and product design to understand users and address their needs Who you are We’re looking for someone who meets the minimum requirements to be considered for the role. If you meet these requirements, you are encouraged to apply. The preferred qualifications are a bonus, not a requirement. Minimum requirements 2+ years of experience in A

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. The Engine Networking Team pulls the players together by ensuring the communication of the game state to all. As a Senior Network Transport Engineer you will help the players experience the game as a nearly synchronous world. Just as the nerves in our bodies coordinate our actions, the network system coordinates all the computers involved into a smooth experience for the players. You will work in all areas of the game platform in your quest for real-time communication of every part of Roblox. You Have: Worked on a powerful user-space network stack, solving problems related to scale, performance, latency, and throughput in client/server environments. Worked on a very large multithreaded distributed system that connects millions of users worldwide. Worked on all the devices Roblox supports - from desktop clients to mobile phone clients to console clients Worked on a game engine and understand how a game engine works You Are: A software engineer with 7+ years of experience with Game networking coming from a Game Engine/Studio A deep understanding of Network Stack with a passion for working with open source Strong systems-level C++ programming experience and fascinated by the actual

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. We’re looking for an outstanding Software Engineer to join our Game Engine Data Model team. As a member of this team, you will innovate on the core data structures that form the backbone of Roblox’s platform. In this role you will have first hand opportunity to design and build one of the core technologies that makes the Roblox game engine special. The Data Model is the object hierarchy that is analogous to a scene graph or entity system, powering all our experiences by exposing an interface between core engine capabilities and our creators. It also acts as a fabric to core technologies, such as networking, scripting, Studio, rendering and physics which are essential to the high performance of the Roblox game engine. You Will: Develop engine code that performs well for user-created games on the Roblox platform. Work cross-functionally with other teams to deliver high-quality functionality. Improve product quality by writing automated tests for your code. Take ownership of features and projects, from design through launch. Build and test code that runs across supported devices, including desktop, mobile, and console. You Have: 2+ years of software engineering experience, with hands-on experi

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Software Engineer on the Engine Systems team, you will help build the core diagnostic instrumentation for Roblox’s engine. In this role, support and build the systems that allow us to monitor and analyze Roblox from the hardware level all the way up to end user experience to improve Roblox for our millions of concurrent users. You will contribute to platform-level systems that help Roblox understand hangs, crashes, performance regressions, and session health across our supported clients. This work requires navigating hardware and vendor-specific limitations across devices, while building reliable systems that help engineering teams safely ship weekly binary updates to Roblox at global scale. You Will Build and maintain components of the (predominantly C++) systems that report stability, reliability, and performance signals across Roblox clients, working from defined designs and contributing to technical decisions within your area. Write well-instrumented, production-quality code across supported platforms, including mobile, desktop, and major consoles, with guidance on complex systems-level work. Deliver the tools and signals engineers use to detect, understand, and resolve disruptions

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. The Engine Networking Team pulls the players together by ensuring the communication of the game state to all. As a Principal Network Transport Engineer you will help the players experience the game as a nearly synchronous world. Just as the nerves in our bodies coordinate our actions, the network system coordinates all the computers involved into a smooth experience for the players. You will work in all areas of the game platform in your quest for real-time communication of every part of Roblox. You Have: Worked on a powerful user-space network stack, solving problems related to scale, performance, latency, and throughput in client/server environments. Worked on a very large multithreaded distributed system that connects millions of users worldwide. Worked on all the devices Roblox supports - from desktop clients to mobile phone clients to console clients Worked on a game engine and understand how a game engine works You Are: A software engineer with 10+ years of experience with Game networking coming from a Game Engine/Studio A deep understanding of Network Stack with a passion for working with open source Strong systems-level C++ programming experience and fascinated by the ac

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. The Consumer App Performance team is looking for a Principal Software Engineer to spearhead stability and performance improvements. You will work across system-level, cross-platform C++ game engine, and front-end codebase, partnering with teams across the company to identify bad behavior patterns and performance bottlenecks, ship measurable improvements, and prevent regressions over time. Our team owns the end-to-end performance of Roblox, from speed and responsiveness to efficiency and stability, across all devices and platforms we support: mobile, desktop, and console. You will: Drive research of new opportunities, build and execute roadmaps to improve stability and resilience of Roblox across all target platforms Design novel solutions to prevent and mitigate crashes, hangs, and other interruptions that hurt user experience. Build robust defense mechanisms for early detection of stability anomalies through real-time monitoring, alerting, and CI/CD automation. Work with stakeholders across Engineering, Product, and Design to align on priorities, tradeoffs, and rollout plans; ensure performance improvements support the user experience. Deliver improvements and guardrails that scale a

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Responsibilities: Implement kernel mode and user mode applications for UniFi-Protect product line device firmware, from bootloader up to user-space applications, like Linux Kernel, rootfs, Websocket, RESTful API design, gRPC, etc Implement features to support hardware testing and diagnosis of various kinds of embedded devices Work closely with various teams, like EE, Backend, Frontend, Mobile, QA, Factory and Manufacturing Requirements: Proficiency in C++ (99 % code base) and C Familiar with Sigmastar / Ambarella platform Proficiency with Video/ Audio streaming and transcoding Understanding and experience with ARM platform Experience with debuggers such as gdb, strace, etc Embedded software development experience in Linux driver and both kernel & user modes are desired Familiarity with some form of scripting (shell, python, nodejs) Familiarity with Git version control A genuine passion for embedded software development A team player, who is very self-motivated, loves difficult challenges, and is goal driven Ability to deliver on tight schedules BS/MS in Computer Engineering, Computer Science or equivalent Fluent in both written and spoken English to work effectively within a highly collaborative environment with colleagues around the world Nice to have: Experience with development boards such as Raspberry Pi, Arduino,

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Lead Software Engineer Overview MasterCard is seeking talented individuals to join our Emerging Payments Technology team in Pune, India. MasterCard is researching and developing the next generation of products and services to enable consumers to securely, efficiently, and intelligently conduct transactions regardless of channel. Whether through traditional retail, mobile, or e-commerce, MasterCard innovation is leading the digital convergence of traditional and emerging payments technologies across a wide variety of new devices and services. Join our team and help shape the future of connected commerce! Role The Consultant, Software Engineering is a hands-on developer specializing in Java development with a particular focus producing software development kits (SDKs) and API services in support of MasterPass, our digital wallet solution. As a Consultant on the Digital Payments Technology team, you will be responsible for helping design and implement SDKs and API services across multiple products and services. You’ll work closely with other team technical leads and with our Product Management team, and other stakeholders. Working within an agile development methodology, you will collaborate with and mentor other engineers and with other technical delivery teams, implement solid, robust solutions f

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a full stack Senior Software Engineer you'll help build Global Actions: the systems that make core actions work consistently across every surface and platform on Roblox. Your first focus will be the Affinity System, which powers how people save and organize the things they care about on Roblox: a unified affinity system covering Saves, Collections, and Wishlists, replacing today's fragmented Favorites experience. You'll work across the stack, from backend APIs and data models to cross-platform React based UI solutions. You Will Design and build the backend APIs and services, covering collections, items, pagination, and batching, that power Saves, Collections, and Wishlists Lead the migration from Favorites to Saved without losing user data, across web, mobile, desktop, console, and VR Build user facing surfaces, including the Saved Library and Collections pages, in partnership with Product and Design Design for privacy and safety, so users only see content and Collections they're allowed to view Extend the system to new entity types as the platform grows You Have 3+ years of experience building full-stack systems, including backend, APIs, and frontend applications at scale. Experience wi

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. We’re looking for an outstanding engineering to join our Engine Scalability team. The Engine Scalability team builds the systems that power both Avatars and Environments across Roblox. Our mission is to enable millions of developers to build large, high-fidelity worlds and multiplayer experiences that still run smoothly on phones and low-end devices. We’re the team that lets Roblox experiences evolve from simple platformers into massively multiplayer, open-world, AAA-quality games. This is a CEO-level priority: how Roblox “ages up” from kids’ games to experiences everyone wants to play, by making higher-fidelity avatars and environments performant at platform scale. You Will Design and ship 3D engine systems for avatar and environment geometry, including mesh processing, level of detail, transcoding, streaming, runtime loading, and related performance systems. Partner closely with other teams (Rendering, Avatar, Studio) and external developers so that the features you build are directly usable to create amazing experiences. Profile and improve the performance of our game engine across a wide range of devices, with particular attention to mobile. Drive projects end-to-end,

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Principal Software Engineer on the Engine DataModel team, you will own and innovate on the foundational components that form the backbone of the Roblox platform. In the Roblox Engine, the DataModel is a tree-like structure that is analogous to a scenegraph in other 3D engines. This role will report to the engineering manager and will be based out of our HQ in San Mateo, CA in a hybrid model 3 days a week (Tuesdays to Thursdays). Our team owns: The core structures and systems are used to build the DataModel and interact with it. The C++ reflection bindings that form the Engine’s Luau API surface and let creators interact with the DataModel. We’ve built custom codegen tooling to generate the C++ for these reflection bindings and other related structures. DataModel serialization … and much more! You will: Develop engine code that performs well for all user-created games on the Roblox platform. Build the core systems and data structures used in the Roblox engine, working with other teams to find universal solutions. Take ownership of projects throughout their full lifecycles. Execute code that performs well on all the devices Roblox supports—from desktop clients to mobile phone clients to

Employee Applicant Privacy Notice Who we are: Shape a brighter financial future with us. Together with our members, we’re changing the way people think about and interact with personal finance. We’re a next-generation financial services company and national bank using innovative, mobile-first technology to help our millions of members reach their goals. The industry is going through an unprecedented transformation, and we’re at the forefront. We’re proud to come to work every day knowing that what we do has a direct impact on people’s lives, with our core values guiding us every step of the way. Join us to invest in yourself, your career, and the financial world. The Role SoFi is looking for a Senior Product Manager to help build the products and platforms that power our members' financial lives. In this role, you'll help define, prioritize, and deliver features and experiences that make it easier for our members to borrow, save, spend, invest, and protect their money. Your work will directly contribute to SoFi's mission of helping every member get their money right. You will own key elements of your product area's strategy, working across engineering, design, data science, marketing, operations, finance, risk, legal, and compliance to translate customer needs and business goals into a clear, iterative roadmap. You'll bridge technical and business worlds to deliver product enhancements that delight users and drive meaningful outcomes. As a Senior Product Manager, you'll be expected to set ambitious goals, sweat the details, be gritty, and be accountable to results. The specific team and product area will be scoped during the hiring process based on business needs and your background. What you'll do Define and execute on a product vision and multi-year roadmap for your product area. Prioritize and drive backlogs for launch with your dedicated engineering teams, writing detailed requirements and partnering closely with developers. Own instrumentation, data, and analys

We believe communication belongs to everyone. We exist to democratize phone service. TextNow is evolving the way the world connects, and that's because we're made up of people with curious minds who bring an optimistic yet critical lens into the work we do. We're the largest provider of free phone service in the nation. And we're just getting started. Join us in our mission to break down barriers to communication and free the flow of conversation for people everywhere. TextNow is looking for an experienced Data Developer with hands-on experience designing and developing data platforms. You will own the design, development, and maintenance of TextNow's data platform, enabling us to make effective data-informed decisions. You will be part of cross-functional efforts to build scalable and reliable frameworks that support allTextNow's business and data products. In this role, you can interact with different functional areas within the business and influence decision-making in a fast-growing mobile communications start-up. This role is about impact at scale. You’ll shape how TextNow builds and operates its systems in an AI-first environment where intelligent tooling is embedded into everyday engineering practice. Using AI is not optional, it’s expected. From design and architecture to implementation, testing, debugging, documentation, and operational analysis, you will actively leverage AI tools to increase velocity, improve code quality, and make better technical decisions. We provide a robust suite of AI-powered development tools and workflows to support you, and we expect you to continuously evolve how you use them to raise the bar for efficiency, clarity, and product excellence across the organization. What You'll Do Own TextNow's data warehouse, data pipelines, and integration points between various business systems. Design, develo