Senior Flutter Engineer (iOS, Android)

Join Binance, the world's foremost blockchain ecosystem and the leading cryptocurrency exchange by trading volume and user registrations. Trusted by over 300 million users across 100+ countries, we pride ourselves on our unparalleled security measures, transparent management of user funds, lightning-fast trading engine, and extensive liquidity. Our diverse portfolio of digital asset products includes trading and finance solutions, educational resources, research, payment methods, institutional services, and innovative Web3 features. At Binance, we harness the potential of digital assets and blockchain technology to create an inclusive financial ecosystem that fosters monetary freedom and enhances financial access globally.Discover Binance SquareBinance Square is envisioned as the ultimate social platform for the latest developments in Web3 and cryptocurrency. Offering a rich array of content from distinguished crypto experts, enthusiastic advocates, and credible media outlets, it bridges the gap between content creators and their audiences by personalizing feeds based on user engagement history. Join our dynamic team and contribute to the evolution of social interaction within the crypto community.

Join Binance, the premier global blockchain ecosystem powering the largest cryptocurrency exchange worldwide, boasting over 300 million users across more than 100 countries. We prioritize industry-leading security, transparency of user funds, lightning-fast trading engine, and deep liquidity, offering an unparalleled portfolio of digital asset products. Our diverse offerings span trading, finance, education, research, payments, institutional services, Web3 features, and beyond. At Binance, we harness the potential of digital assets and blockchain technology to create an inclusive financial ecosystem that champions the freedom of money and enhances financial accessibility for individuals globally.About Binance SquareBinance Square is designed to be the ultimate social platform for discovering the latest trends in Web3 and cryptocurrency. Featuring a wide array of content from distinguished crypto experts, passionate enthusiasts, and reputable media sources, this platform connects content creators with their followers, personalizing user feeds based on engagement history. Become part of our dynamic team that is redefining social interaction within the crypto realm.

Join Jump (jumpapp.com), a rapidly expanding company that offers an exciting and dynamic work environment! Our team is composed of exceptional talent, and we pride ourselves on delivering top-notch mobile applications that our customers love. If you’re seeking a stimulating career path, look no further!We are on the lookout for skilled engineers to contribute to the development of outstanding mobile applications using Kotlin and Jetpack Compose.We value autonomy, agency, and ownership among our team members. Passion, excitement, and an intelligent curiosity about mobile development challenges and solutions are essential for success in this role.We appreciate kindness, empathy, and a collaborative spirit as we take collective responsibility for our projects.

Kotlin Software Engineering Consultant (SME) Overview We are on the lookout for a seasoned Kotlin Software Engineering Consultant to act as a Subject Matter Expert (SME) for cutting-edge software development and AI benchmarking initiatives. This role is crucial for creating, documenting, and validating Kotlin-based functionalities that assess and enhance the coding capabilities of large language models (LLMs), especially in Android development contexts. In this position, you will establish the technical benchmarks and functional frameworks for real-world coding assessments, ensuring that all tasks maintain the utmost standards of authenticity, accuracy, and reproducibility. Your contributions will involve assembling datasets and functional structures that reflect the intricacies and logical reasoning characteristic of professional Android engineering. Key Responsibilities 1. Functional Design, Documentation & Benchmark Definition Develop, document, and validate Kotlin-based functionalities for AI benchmarking and software simulation projects. Create thorough functional and technical documentation, detailing feature requirements, system behaviors, and anticipated results. Convert open-ended requirements into tangible, well-defined Android tasks that present real engineering challenges. Ensure every benchmark task is complete, verifiable, and aligned with genuine developer workflows. Maintain organized repositories of Kotlin challenges, categorized by complexity, topic, and type of functionality. 2. Technical Standard Setting, QA & Process Improvement Establish Kotlin-specific quality metrics, benchmarking standards, and evaluation rubrics in accordance with Android production criteria. Create standard operating procedures (SOPs) and quality assurance frameworks that ensure stylistic consistency, idiomatic Kotlin usage, and functional clarity. Conduct thorough quality assurance checks on deliverables, verifying code accuracy, documentation completeness, and adherence to benchmarks. Apply quality principles to uphold dataset and code task evaluation standards. Curate exemplary Kotlin implementations that epitomize benchmark-worthy coding practices. 3. Talent Definition, Vetting & Calibration Collaborate with recruitment and project leaders to define the competencies required for Kotlin contributors. Develop technical assessment frameworks for evaluating Kotlin developers, incorporating practical coding challenges and debugging tasks. Lead calibration sessions with contractors to ensure uniformity and quality across the board.

Are you a Kotlin aficionado ready to pioneer advancements in artificial intelligence? As large-scale language models transform from simple chatbots into sophisticated developer assistants, your expertise will play a crucial role in shaping this evolution. By providing high-quality engineering data, you will contribute to AI's ability to assist developers in addressing real-world challenges with increased speed and accuracy.We are seeking skilled Kotlin specialists who can analyze real-world engineering scenarios—such as bug reports or feature requests from a Git repository—and deliver clean, efficient, idiomatic solutions using the Kotlin programming language. Your task will involve creating high-quality code patches that adhere to contemporary Android development standards, ensuring technical accuracy, maintainability, and clarity.Successful candidates should possess hands-on experience in modern Android and Kotlin development, including technologies like Jetpack Compose, Kotlin Coroutines, and essential Jetpack libraries such as Room, WorkManager, Datastore, ViewModel, and Hilt. Familiarity with build.gradle configurations, dependency management, and networking libraries like OkHttp, Retrofit, and Coil is also essential. Experience with Android multimedia tools such as CameraX, ExoPlayer, and Media3 will be an added advantage.On a typical day, you will assess AI-generated code, rectify errors, implement optimized Kotlin solutions, and document best practices that reflect modern Android design patterns and coding conventions.A solid background in Android software development is required, with demonstrable experience in building and maintaining production-level Kotlin applications. Effective communication skills and the ability to articulate technical decisions are essential for this role.We offer a competitive pay rate starting at $35 per hour, with the exact compensation determined based on your experience, expertise, and location. Please note that as a contractor, you will need to provide your own secure computer and high-speed internet; company-sponsored benefits such as health insurance and PTO are not included.

About the RoleWe are seeking an experienced and motivated Senior Backend Engineer (generalist) with a robust background in Java and preferably Kotlin to join our dynamic team. In this remote position, you will play a pivotal role in developing our product from the ground up. Your responsibilities will include integrating with enterprise systems, scraping and analyzing large datasets, and creating systems that empower users to utilize LLMs for generating scalable sales insights—extracting critical information from millions of public documents.You could be the ideal candidate if you: Are an accomplished developer with experience in Enterprise B2B SaaS or Big Data processing within the JVM ecosystem, with Kotlin as a plus.Have a history of impactful engineering experience in a startup or smaller organization.Are enthusiastic about engaging in all aspects of backend development and have experience collaborating within small teams in fast-paced startup environments.Possess familiarity with the following technologies: Kotlin (Backend)Google Cloud Platform (GCP)Google Cloud SQL for PostgreSQLFirebasePythonHave experience with any of the following (not mandatory):Natural Language GenerationEnterprise API integrationsPrompt EngineeringLarge Scale Web Scraping & ParsingAre proficient in both written and spoken English.Our Work CultureCustomer-Centric Approach - We pride ourselves on putting customers at the heart of everything we do.Rapid Execution - We operate with a sense of urgency and decisiveness, always striving to gain momentum.Joy in the Journey - We intentionally create an environment that is both energizing and enjoyable, fostering camaraderie and resilience within our teams.Hands-On Engagement - We believe that the best ideas emerge from close engagement with our work, embracing challenges and complexities.

The mission of Speechify is to eliminate barriers to reading and learning.With over 50 million users benefiting from our innovative text-to-speech solutions, Speechify transforms various reading materials—including PDFs, books, Google Docs, news articles, and websites—into audio, enabling users to absorb information more efficiently and effectively. Our suite of products features an iOS app, Android App, Mac App, Chrome Extension, and Web App. Recent accolades include being named Chrome Extension of the Year by Google and receiving Apple’s Design Award for Inclusivity in 2025.Our team, composed of nearly 200 talented professionals worldwide, operates in a fully remote environment—eliminating the need for a physical office. Our diverse workforce includes frontend and backend engineers, AI research scientists, and industry experts from leading companies such as Amazon, Microsoft, and Google, as well as alumni from prestigious PhD programs like Stanford and successful startups like Stripe, Vercel, and Bolt.OverviewAs our Android app continues to excel as the leading text-to-speech application in the Play Store, we are seeking a dynamic Senior Android Engineer to support our expanding user base and to engage in exciting new projects that will drive our mission forward. This pivotal role is perfect for strategic thinkers who thrive in fast-paced settings, are passionate about making impactful product decisions, and have a proven track record of creating exceptional user experiences.Our flat organizational structure empowers all team members to take on leadership roles by showcasing technical prowess and delivering results swiftly. A strong work ethic, effective communication skills, and a relentless drive for success are essential attributes.Our interview process consists of several technical assessments, typically wrapped up within one week.

At Speechify, we are on a mission to eliminate barriers to learning through reading. With over 50 million users leveraging our text-to-speech technology to transform various content formats into engaging audio experiences, we are looking for a Senior Android Engineer to take charge of our rapidly growing Android app, the most popular text-to-speech application on the Play Store. In this pivotal role, you will shape the future of our Android team, collaborate closely with our design and engineering teams, and contribute to the development of innovative features that enhance user experience. We value strategic thinkers who thrive in dynamic environments, are passionate about impactful product decisions, and possess a strong commitment to delivering exceptional results. Join our entirely remote team of talented individuals from prestigious companies and institutions, and become a leader by showcasing your technical expertise and work ethic.

Join Canonical as a Web/UI Engineer, where you'll craft dynamic and reliable user experiences using JavaScript, CSS, React, and Flutter. You'll be at the forefront of developing Canonical's enterprise products, acting as the interface for our users while ensuring consistency across our platforms. Collaborate with our central team to enhance our open-source React toolkit and Vanilla Framework, aiming to build high-performance and accessible interfaces. This role offers the chance to contribute to both web and Ubuntu engineering, utilizing REST APIs and focusing on API design as a critical aspect of your development process. We value innovation, so your passion for open-source software and cutting-edge web technologies will be essential as you help us create exceptional user experiences.

Join Binance, the world's leading blockchain ecosystem and the largest cryptocurrency exchange, as a Senior Android Architect specializing in Performance Optimization and AI. You will be pivotal in designing and enhancing the infrastructure that supports our innovative platforms, ensuring seamless user engagement and interaction. As part of our Experience & Connectivity Team, you will contribute to building cutting-edge solutions that enhance our digital ecosystem while working 100% remotely from the comfort of your home.

We are seeking a talented German Language Specialist to join our team as a Freelance AI Trainer for an exciting project focused on Android devices. In this role, you will be integral in enhancing the AI capabilities by providing insights and expertise in the German language. Your contributions will directly impact the effectiveness of AI interactions and user experiences.As a Freelance AI Trainer, you will work remotely, allowing you the flexibility to manage your schedule while collaborating with a dynamic team dedicated to innovation in technology and language processing.

Our MissionAt Speechify, we revolutionize the way you consume information. Whether it’s articles from the web, documents stored in the cloud, or books on your mobile device, we enable you to absorb information through listening, anytime and anywhere. Our tools facilitate learning that is not only easier but also deeper and faster.Just as streaming services have transformed audio entertainment, we are innovating the realm of audio information. Our efforts have positioned us as the leading platform in our category, experiencing remarkable growth.Position OverviewWe are seeking a talented Senior Software Engineer to become a vital part of our Core Experiences Team. This team is responsible for developing and maintaining the essential services and SDKs that enhance Speechify’s product experience across various platforms. This strategic position is ideal for someone who thrives at the intersection of product development and infrastructure, possesses a strategic mindset, and is dedicated to crafting clear, reliable APIs and simplified systems that significantly improve the user experience.

We are seeking a talented and motivated German Language Specialist to join our freelance AI training project focused on Android devices. In this role, you will be responsible for assisting in the development and enhancement of AI-driven language tools. Your expertise in the German language, combined with your passion for technology, will help shape the future of language learning and technology integration.

Join Proof, the pioneering identity-assured transaction management platform, as a Senior Mobile Application Engineer. In this pivotal role, you will be responsible for designing, developing, and maintaining our mobile applications, enhancing user experience, and ensuring the highest quality standards. Your expertise will contribute to our mission of digitizing trust for essential transactions in a digital-first world. Be part of our innovative team that has already transformed digital commerce since 2015, achieving milestones such as the first online real estate closing and online mortgage transactions.

Canonical is at the forefront of open source software, delivering innovative operating systems to the global enterprise and technology sectors. Our flagship platform, Ubuntu, powers transformative initiatives across public cloud, data science, AI, engineering innovation, and IoT. We proudly serve esteemed public cloud and silicon providers, as well as industry leaders worldwide. As a pioneer in global distributed collaboration, we boast a diverse team of over 1,200 professionals across 75+ countries, with minimal office-based roles. Our teams come together two to four times a year in dynamic locations around the globe to align on strategy and execution. As we aim to revolutionize software operations through model-driven infrastructures, we invite an Engineering Manager to lead our Solutions Engineering team. This role will focus on developing cutting-edge infrastructure-as-code solutions that empower organizations to efficiently manage high-performance computing, private clouds, data lakes, AI/ML, and analytics. Your leadership will drive the creation of new technologies and products, while collaborating closely with our managed infrastructure operations team, which oversees private OpenStack clouds and Kubernetes clusters for clients worldwide. As an Engineering Manager, your primary responsibility is to nurture and guide your team, ensuring their growth and satisfaction as engineers. You will leverage your technical expertise to challenge and uplift your team members, fostering a culture of excellence. Join us in influencing our technical delivery, team direction, and execution.

Job Overview:The Electrical Compliance Engineer will take a proactive role in leading the communication, development, and execution of design content aligned with our clients’ objectives. This position involves supporting daily activities within process development, validation tasks, and change management. Utilize your expertise in Electrical Technology to address challenges within a manufacturing context.Key Responsibilities:Interpret and validate electrical schematics and mechanical diagrams, including complex automated system layouts.Analyze engineering change orders to implement system updates for problem resolution.Work closely with manufacturing and quality assurance teams to facilitate the qualification of assembly integration into production systems.Document procedures, results, numerical and graphical data, along with recommendations for product or process changes.Maintain software, documentation, and equipment in accordance with the latest revisions or operational specifications.Ensure systems comply with budgetary constraints, industry standards, and regulatory guidelines.Review designs with product engineers to ensure compliance standards are met.Oversee product verification and characterization processes.Contribute to regulatory certification, compliance standards, product performance verification, and reliability testing.Assist the Quality Manager in preparing for and conducting audits.

Canonical seeks a talented Software Engineer to join our Solutions Engineering team, working remotely from anywhere in the world. As a leading provider of open-source software, we empower enterprises with our widely adopted Ubuntu platform, driving innovation across public cloud, data science, AI, engineering, and IoT sectors. You'll play a pivotal role in transforming open-source IT and DevOps operations, enabling high-performance computing, private cloud, and advanced analytics through infrastructure-as-code. Collaborate closely with our managed infrastructure operations team to refine our products based on real-world experiences while developing Python-based automation tools that simplify operations for users globally. If you are passionate about distributed systems and cloud computing, and eager to work on the cutting edge of software engineering, we invite you to apply.

GitLab is a pioneering open-core software company that offers an extensive AI-driven DevSecOps Platform, embraced by over 100,000 organizations globally. Our mission is to empower every individual to contribute to and collaboratively shape the software that drives our world forward. By fostering an environment where everyone can contribute, we transform consumers into contributors, significantly propelling human advancement. Our platform seamlessly integrates teams and organizations, dismantling obstacles and redefining possibilities within software development. With innovative products such as Duo Enterprise and Duo Agent Platform, our customers leverage AI benefits throughout every stage of the Software Development Life Cycle (SDLC).The principles embedded in our products are mirrored in our team dynamics: we embrace AI as a fundamental productivity enhancer, encouraging all team members to integrate AI into their daily workflows to enhance efficiency, innovation, and impact. At GitLab, we cultivate an environment where careers flourish, innovation thrives, and every voice is acknowledged. Our high-performance culture is guided by our values and a commitment to continuous knowledge sharing, enabling team members to unlock their full potential while collaborating with industry leaders to tackle complex challenges. Join us in co-creating the future as we revolutionize how the world develops software.Position OverviewAs a Lead Principal Database Engineer, you will play a pivotal role in designing and steering the evolution of the PostgreSQL infrastructure that underpins GitLab.com and thousands of self-managed enterprise deployments. You will tackle critical challenges related to uncontrolled data growth, complex upgrades and migrations, while ensuring unwavering reliability at a global scale. Your focus will be on creating database patterns and platforms that maintain GitLab's speed, resilience, and cost-effectiveness as usage expands. You will architect scalable, distributed database solutions, develop proactive health and reliability frameworks, and advocate for the adoption of modern database technologies and data stores that enhance both product capabilities and production stability. Engaging hands-on within the codebase and collaborating closely with product and infrastructure teams, you will translate long-term database strategies into incremental, customer-visible enhancements, transition incident response from reactive to proactive, and help define GitLab's forward-looking data architecture, encompassing sharding and multi-database support.

Canonical is at the forefront of open-source software innovation, providing cutting-edge operating systems like Ubuntu to enterprises worldwide. Our technology powers advancements in cloud computing, data science, artificial intelligence, engineering, and the Internet of Things (IoT). We collaborate with top-tier public cloud providers, silicon manufacturers, and industry leaders, thriving in a fully remote environment with over 1200 team members across 75 countries. Our company is founder-led, profitable, and continuously expanding. We are seeking a talented Software Engineer for our Sustaining Engineering team to tackle complex challenges in Linux-based infrastructure and applications. This role encompasses all layers of the stack, from bare metal and virtualization (KVM) to containerization (Docker/LXC/LXD), storage solutions (Ceph), and networking technologies (OVS, OVN, Core networking) up to OpenStack and Kubernetes. You will have the opportunity to demonstrate your engineering prowess and contribute to the success of Ubuntu and the broader open-source community. If you are passionate about Linux, open-source development, and have strong problem-solving skills, you will thrive in this dynamic environment with Canonical.