Known is looking for a Mobile QA Engineer in San Francisco, CA to help maintain high standards for our mobile applications. This position works closely with engineers, designers, and product managers to ensure every release meets our quality expectations. What you will do Develop and carry out detailed test plans for mobile apps Work with cross-functional teams to identify and document defects Support the team in delivering reliable, high-performing mobile experiences Requirements Experience with mobile application testing Ability to create and execute thorough test plans Strong communication and collaboration skills This role focuses on ensuring quality and performance across our mobile products. Candidates who care about mobile technology and want to help shape user experience will find this work meaningful.

Join our dynamic team at 360itprofessionals1 as a Senior Mobile Quality Assurance Engineer. In this pivotal role, you will ensure the highest standards of quality for our mobile applications, contributing to a seamless user experience. We are looking for passionate individuals who can identify issues and drive improvements in our mobile platforms.

Mesh is building technology to make cryptocurrency payments practical for everyday use. The company’s orchestration engine and consumer app help unlock liquidity from tokenized assets, aiming to support global commerce. Mesh is headquartered in San Francisco and operates internationally, with backing from investors including PayPal Ventures, Paradigm, and Galaxy Ventures. Role overview The Senior QA Automation Engineer leads quality engineering across Mesh’s development lifecycle. This position designs and maintains automation frameworks, sets quality standards, and works to embed quality into every stage of product development. Collaboration is key: expect to work closely with engineers, product managers, and designers to deliver reliable Web3 experiences. Teams span North America, Europe, and India. What you will do Design, build, and maintain end-to-end test automation frameworks using tools such as Playwright. Create test strategies that cover the full stack, including UI, APIs, smart contract interactions, and wallet flows. Develop and maintain tests for Web3 user journeys, such as wallet connections, transaction signing, contract interactions, and on-chain state checks. Integrate automated test suites into CI/CD pipelines and monitor their health over time. Use AI-driven development tools (for example, Copilot, Cursor, Claude) to accelerate test writing and framework development, and share best practices with the team. Identify gaps in test coverage, set priorities, and drive ongoing improvement. Promote a culture of quality within engineering. Stay current with new testing tools, frameworks, and developments in the Web3 space. Requirements At least 7 years of experience in QA engineering, with a strong focus on automation. Extensive hands-on experience with Playwright and/or Cypress. Familiarity with other tools such as WebdriverIO, Selenium, or Puppeteer is a plus. Proficiency in automation frameworks and quality assurance best practices (additional technical requirements were not specified in the source). Location This position is based in San Francisco, CA, and involves collaboration with Mesh’s distributed teams.

airapps is hiring a Mobile DevOps Engineer in San Francisco. This role centers on improving how mobile applications are built, tested, and delivered. Role overview The Mobile DevOps Engineer will focus on refining and maintaining development and deployment workflows for mobile apps. Working alongside teams from different disciplines, this position supports continuous integration and continuous delivery (CI/CD) pipelines to keep releases running smoothly and efficiently. What you will do Streamline mobile application development and deployment processes Collaborate with cross-functional teams to improve automation Enhance and maintain CI/CD pipelines for mobile projects Requirements Experience with mobile application DevOps practices Interest in automation and workflow optimization Ability to work closely with diverse technical teams

About Our TeamJoin our dedicated Quality Assurance Software Engineering team, where we prioritize the excellence and dependability of our device software. We create and uphold automated testing frameworks, hardware-in-the-loop labs, and efficient release pipelines that guarantee quality signals are reliable, facilitating swift and secure product launches. Our collaborative environment encompasses infrastructure, automation, and cross-team synergy to ensure every release adheres to the highest standards.About the PositionAs a Quality Assurance Software Engineer, you will take ownership of the automated validation process for our device software. This encompasses developing test frameworks, conducting regression testing, overseeing hardware-in-the-loop labs, and managing release gates. You will construct systems that ensure quality signals remain trustworthy, integrate them into our CI/CD processes, and streamline the execution of repeatable procedures for QA vendor technicians.We seek engineers with extensive expertise in software quality, automation, and hardware-software integration, who are passionate about building scalable and reliable validation systems.This position is located in San Francisco, CA, operating on a hybrid work model of four days in the office each week, and we provide relocation assistance to new hires.Key Responsibilities:Test Infrastructure & Frameworks: Design, implement, and maintain a cohesive test framework for device software (unit, integration, system/end-to-end), integrating adapters for GitHub/Linear/Slack and ensuring reproducible runs.CI/CD Integration & Releases: Seamlessly integrate test suites with Buildkite, enforce promotion criteria (staging/prod), automate regression filing, and publish traceable artifacts and release notes.Hardware-in-the-loop Lab Design & Orchestration: Strategically plan and establish racks, power/networking, and orchestration for device testing; facilitate automated flashing, provisioning, and telemetry capture.Automation Tooling: Create tools for API/firmware validation, result triage, log capture, and reproducible bug reports.Quality Signals, Metrics, and Flake Control: Develop dashboards and alerts for pass rates, stability, and release readiness; identify and quarantine flaky tests; lead root-cause analysis with stakeholders; and monitor DORA-style delivery metrics to ensure release health.Vendor Enablement: Draft clear procedures for QA vendor technicians, review their reports, and manage a queue for rig maintenance and repairs.Cross-Team Collaboration: Collaborate with embedded and system software teams to enhance testability and streamline processes.

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

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

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

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

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

Join our dynamic team at 360 IT Professionals as a Senior Automation QA Engineer. We are seeking an experienced professional who is passionate about ensuring the highest quality of software through robust testing practices. This is an urgent need, and we are looking for candidates who can hit the ground running.

Founding Engineer (Unity Mobile)Pax Historia is revolutionizing gameplay by leveraging cutting-edge generative AI technology. Our innovative platform seamlessly combines the intricacies of grand strategy with the limitless creativity of a sandbox environment, all while being energized by a dedicated community that actively creates and remixes scenarios.Our community is vibrant, publishing hundreds of scenarios daily and engaging in millions of gameplay sessions each week, with rapid growth on the horizon. Supported by prominent investors such as Y Combinator, Pace Capital, and Z Fellows, your contributions will directly impact a product enjoyed by hundreds of thousands of players.The RoleWe are seeking a founding-level Unity developer to spearhead the development of our native mobile application. This role requires full-time, in-person work in our San Francisco office located in Dogpatch, where you will collaborate closely with the co-founders.Current Position Overview:A web-based game with significant product-market fit, particularly within the alternate-history genre.Hundreds of thousands of users are eagerly anticipating a native mobile experience.A well-documented TypeScript codebase with clear data models and API patterns for integration.No existing Unity codebase; you will be architecting the system from the ground up.Your Key Responsibilities:Developing the core gameplay loop for iOS and Android, including features such as an interactive map, action submissions, event viewing, and AI-driven chat.Creating a high-performance 2D map rendering system capable of displaying thousands of regions with smooth panning, zooming, and animated territorial changes.Building a consistent UI component library that aligns with our web design system (custom components, Poppins typography, dark/light modes).Integrating with our Firebase/Supabase backend and AI services through REST APIs.Implementing push notifications and deep linking to enhance user engagement.Optimizing the application for lower-end mobile devices and memory-constrained environments.In summary, your contributions will propel Pax Historia into the mobile realm and unlock our next phase of growth.

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.

About Our TeamAt OpenAI, we are developing a robust Swift platform, from architecture to continuous integration, that empowers hundreds of engineers and their agents to innovate within ChatGPT, Atlas, Sora, and various other rapidly advancing applications. Our mission is to enable teams to expedite development while enhancing both performance and reliability.Role OverviewWe are seeking experienced Staff+ iOS engineers with diverse backgrounds in the iOS platform. We value expertise in performance optimization, build/CI systems, or enhancing AI developer productivity. Whether your specialty lies in UI frameworks or automated testing, your contributions will lead to reduced friction, minimized complexity, fewer regressions, and improved overall performance.If you are passionate about scaling Swift development alongside advanced AI tools, we invite you to apply for this exciting role.This position is open in San Francisco, New York, and Seattle.Key ResponsibilitiesDevelop and enhance foundational Swift frameworks utilized across multiple applications and platforms (caching, state management, observability, navigation, and component systems).Boost application performance (startup speed, responsiveness, memory efficiency, battery life) through profiling, increased visibility, regression prevention, and architectural patterns.Enhance reliability by systematically reducing crashes, improving error handling, and driving improvements in the release process.Collaborate closely with product engineering teams to identify pain points and emerging infrastructure requirements.Create internal tools and automation (Bazel, CI, testing frameworks, Codex agent skills) to accelerate engineering velocity.Simplify complex real-world constraints into clean abstractions through intuitive APIs, enforceable contracts, and safe defaults.Ideal Candidate ProfileStrong fundamentals in iOS engineering (Swift, concurrency, networking, Xcode ecosystem, familiarity with UIKit/SwiftUI) and an understanding of contemporary features and best practices.A penchant for tackling platform challenges: frameworks, architecture, performance, and tools that empower and accelerate other engineers.Demonstrated ownership: proactively identifying risks and opportunities, driving projects to completion, and adapting quickly.A strong focus on measurement: able to instrument, define metrics, conduct experiments, and iterate based on data-driven insights.

Join Our Team as an iOS EngineerAt Speak, we are on a mission to transform language learning for everyone.Language learning can significantly enhance lives by connecting individuals to new cultures, career opportunities, and communities. With over two billion people globally striving to learn a language, the traditional approach of one-on-one tutoring remains challenging to access at scale and has seen little innovation in recent years. Speak aims to change this by developing a human-level, AI-driven tutor that fits in your pocket—a conversation-first platform that empowers learners to engage in dialogue, receive real-time feedback, and progress through meticulously crafted lessons. Our goal is to provide a complete journey from novice to confident speaker in multiple languages.Launched in South Korea in 2019, Speak has quickly established itself as the leading language learning app, now catering to learners across various markets and offering support for over 15 languages. As a premier AI company, we have secured over $150 million in venture funding from notable investors, including OpenAI, Accel, Founders Fund, and Khosla Ventures. Our diverse team is spread across San Francisco, Seoul, Tokyo, Taipei, and Ljubljana.About the RoleAs a Mobile iOS Engineer on Speak’s engineering team, you'll play a pivotal role in enhancing our content delivery, conducting A/B testing on monetization features, and facilitating the launch of new markets and languages. You'll work closely with backend engineers, as well as our Product and Design partners, and be responsible for deploying product features to millions of users.Your ResponsibilitiesEnhance the “freemium” experience to boost user conversions.Assist in the launch of new markets and languages.Implement various paywall tests, including pricing strategies, design modifications, delayed paywalls, and special offers.Refine our speech-to-text capabilities.Enhance our audio and video streaming functionalities.Your Qualifications3+ years of experience in mobile engineering, ideally within a dynamic startup environment.Proficiency in Swift, with a solid grasp of mobile architectures such as MVC and MVVM.Bonus: Experience with SwiftUI and mobile streaming technologies.

Join Stemxpert1 as a QA Automation Engineer, where you will play a pivotal role in ensuring the quality and performance of our applications. Your expertise in web services and Selenium will be essential in developing automated test scripts and frameworks. Collaborate with cross-functional teams to identify and resolve issues, ultimately enhancing the overall user experience.

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

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 Sonsoft Inc. as a Facets QA Test Analyst, where you will play a critical role in ensuring the quality and performance of healthcare software solutions. As part of our dedicated team, you will work closely with developers and stakeholders to identify defects, create test cases, and ensure high-quality software delivery.