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<h3>Responsibilities:</h3><ul><ul><li>Be responsible for developing and maintaining the core app modules.</li><li>Collaborate with product, design, and QA teams to deliver a smooth user experience.</li><li>Optimize the app user experience, minimizing latency and improving overall app performance.</li><li>Participate in code reviews, ensuring code quality, maintainability, and deliver high quality work.</li><li>Explore and use AI development tools to boost coding, testing, and debugging efficiency.</li></ul></ul><h3>Requirements:</h3><ul><ul><li>Over 3 years of iOS experience, proficient in Objective-C/Swift.</li><li>Solid understanding of common design patterns and best practices.</li><li>Experience in modular app design, componentization, and maintaining scalable codebases.</li><li>Proficient in iOS system memory management, multi-threading, network optimization.</li><li>Strong problem-solving and debugging skills.</li><li>Good collaboration skills for fast-paced, cross-team environments.</li><li>Nice to have experience in cross-platform development, knowledge of Flutter is a plus.</li></ul></ul>We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Senior iOS Engineer

<b>About Kraken</b>As one of the largest and most trusted <b>digital asset platforms</b> globally, we are empowering people to experience the life-changing potential of crypto. Trusted by over 8 million consumer and pro traders, institutions, and authorities worldwide - our unique combination of products, services, and global expertise is helping tip the scales towards mass crypto adoption. But we’re only just getting started. We want to be pioneers in crypto and add value to the everyday lives of billions. Now is not the time to sit on the sidelines. Join us to bring crypto to the world.To ensure Kraken is the right fit for you, please ensure you read <a href="https://kraken-culture.notion.site/" rel="noopener noreferrer nofollow ugc" target="_blank"><b>Kraken Culture Explained</b></a>to find out more about us!UI Engineering at KrakenKraken’s Software Engineers are tasked with developing cutting edge interfaces that change how millions of users interact with our platform. Our products need to handle processing and displaying huge amounts of real-time information whilst also maintaining an intuitive and friendly user experience, to achieve this engineers with both a strong technical background and keen eye for design are required. We're looking for passionate and talented engineers who can bring fresh ideas and expertise from all industries. As a Software Engineer, you will work as a core member of a fully remote team on a specific project critical to Kraken’s needs with opportunities to switch teams and projects as you and our fast-paced business grow and evolve. We need all of our engineers to display a versatile talent set, from exceptional technical ability to strong communication skills and passion for the monumental change that the crypto industry can bring to society.About the RoleWe’re looking for a legendary Staff Engineer who can take our mobile products to the next level. You will use your strong knowledge of mobile engineering to identify places where we should use native code to improve the overall UX, UI and performance of our mobile products. We demonstrate ownership of tangible outcomes which deliver value to our users. For this role we are looking for an experienced staff engineer with a background in a similar role ideally in a financial / trading environment. You have contributed strongly in building an industry leading mobile app using React Native with the combination of native components.A key goal will be to take the ownership of architectural vision, long term engineering direction and vision for scaling and growing our mobile products. You are expected to know best practices, how to deliver great user experiences and be able to mentor engineers on the team to deliver these, with a down-to-earth attitude. Everybody within the Engineering organization is mission oriented and results driven, we put “accelerating the worldwide adoption of cryptocurrency” above all else and we index heavily on tangible business results over ‘busy work’, It’s not about how much code was written, it’s about how much impact what was delivered with as little as code as possible, or even better solving a problem without writing any new code.<h3>Responsabilities</h3><ul><ul><li>Strong technical understanding of the React Native and native mobile across iOS and Android architecture, performance and ongoing stability of mobile products</li><li>Take ownership and continuously review code to ensure it is scalable, reusable and works across multiple applications inside our repository</li><li>Mentoring and guiding engineering in the mobile team to best practices and working with them to educate</li><li>Excellent communicator to smoothly ensure others understand what is required to change at all levels.</li><li>Experience working with product and engineering leadership to ensure big bets can be made, architectural changes can happen and priorities are understood.</li><li>Excellent communication both written via RFCs / architecture diagrams and verbally to clearly articulate points in meetings and get everyone on the same page is required. </li><li>Keep up to date with the mobile development ecosystems so as to be able to influence future product direction. </li></ul></ul><h3>Requirements </h3><ul><ul><li>At least 8+ years extensive software engineering experience in high performing teams</li><li>6+ years of strong knowledge using React Native and Typescript at scale</li><li>2+ years in a Staff Engineer role</li><li>Objective-C/Swift or Java/Kotlin - iOS and Android native experience and bridging with React Native</li><li>Firm grasp of the JavaScript language and its nuances, including ES6+ syntax and the TypeScript superset</li><li>Ability to teach (and write) new architecture, turbo modules and JSI to the team, knowledge and understanding of C++</li><li>Experience working on either large complex enterprise level systems or proven ability to build a greenfield product from start to finish</li><li>You write high quality, well tested code to meet the needs of your customers.</li><li>Willingness to take extreme ownership of your work and educate engineers to create results</li><li>Ability to work closely with product, engineering and design teams</li><li>Working with leadership and senior management to steer the way of mobile engineering roadmap</li></ul></ul><h3>Nice to have</h3><ul><ul><li>You have worked in the crypto, fintech or security industry </li><li>Knowledge of Rust</li><li>React Native core contributor or experience with the core</li></ul></ul>Location Tagging: #EU #LI-Remote We’re powered by people from around the world with their own unique and diverse experiences. We value all Krakenites and their talents, contributions, and perspectives, regardless of their background. We encourage you to apply for roles where you don't fully meet the listed requirements, especially if you're passionate or knowledgable about crypto!As an equal opportunity employer we don’t tolerate discrimination or harassment of any kind. Whether that’s based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status or any other protected characteristic as outlined by federal, state or local laws. <b>Stay in the know</b><b><a href="https://kraken-culture.notion.site/" rel="noopener noreferrer nofollow ugc" target="_blank">Kraken Culture Explained</a></b><b><a href="https://twitter.com/krakenfx" rel="noopener noreferrer nofollow ugc" target="_blank">Follow us on Twitter</a></b><b><a href="https://blog.kraken.com/" rel="noopener noreferrer nofollow ugc" target="_blank">Catch up on our blog</a></b><b><a href="https://www.linkedin.com/company/kraken-exchange/" rel="noopener noreferrer nofollow ugc" target="_blank">Follow us on LinkedIn</a></b>

Staff Engineer - React Native and Mobile Native

<h3>Working At Bitso</h3><p>We are a diverse team that takes pride in understanding the perspectives of others. We fully embrace working remotely and we are eager to act, improve and accelerate progress inside and outside of our organization.</p><p>To drive revolutionary changes in society and make crypto useful, we delight our customers with world-class products, deep care, and intentional empathy.</p><p><strong>Who You Are</strong>You are an experienced Mobile Engineer with a strong focus on React Native and excellent communication skills in English. You thrive in autonomous environments and are comfortable working directly with stakeholders from Product, Marketing, and Design to transform business requirements into high-quality mobile solutions. You're excited by the opportunity to build and scale cutting-edge mobile applications, and you possess the technical versatility to navigate both JavaScript/TypeScript environments and foundational native mobile codebases (iOS/Android).Requirements<strong>Core Requirements:</strong>• 5+ years of experience as a Software Engineer, with 3+ years dedicated to professional React Native development.• 3+ years of experience with Java Spring Framework.• Clear and effective communication in English.• Proven ability to work autonomously and manage priorities in a fast-paced environment.• Experience working directly with non-technical stakeholders (Product, Design) to gather requirements and deliver exceptional mobile user experiences.• Demonstrated experience in shipping and maintaining consumer-facing mobile applications on both the Apple App Store and Google Play Store.<strong>Technical Requirements:</strong>Mobile (Primary Focus - 70%)• Expert proficiency in React Native, JavaScript/TypeScript, and React's component-based architecture.• Strong experience with mobile state management (e.g., Redux Toolkit, Zustand, Context API) and data fetching (e.g., React Query).• Experience with React Native tooling and development workflows (e.g., third-party libraries, linking native modules, turbo modules).• Familiarity with native mobile development concepts (Android - Kotlin/Java or iOS - Swift/Objective-C) for debugging, performance profiling, and bridging.• Strong understanding of mobile performance optimization, application size reduction, and crash reporting (e.g., Firebase Crashlytics, Datadog, Bugnsag, Sentry).Backend/Auxiliary (30%)• Basic understanding of API design and integration patterns to efficiently consume backend services.• Experience integrating mobile applications with AWS, Microservices, and Distributed Systems.• Familiarity with tracking, analytics, and experimentation frameworks on mobile (e.g., Segment, Amplitude).<strong>Nice-to-Have:</strong>• Experience leading or participating in a mobile application migration from native to React Native.• Brownfield integrations and interactions between RN and Native.• Knowledge of mobile-specific internationalization tools.• Experience with growth/marketing tools such as CleverTap, Adjust, or Amplitude on mobile platforms.• Previous experience in fintech, crypto/blockchain, or other high-growth technology companies.• Track record of technical leadership or mentoring other engineers, specifically in the mobile domain.<strong>What You Will Do</strong>• Architect and Implement: Design, build, and deploy new features and infrastructure for our flagship React Native mobile application, ensuring high performance, stability, and scalability.• Drive Mobile Strategy: Contribute to the overall mobile application strategy, including evaluating new technologies, streamlining CI/CD processes, and enhancing developer experience.• Optimize Mobile Experience: Implement deep linking, notification strategies, and performance improvements to drive conversions and enhance the user journey within the app.• Collaborate Cross-functionally: Work directly with Product Managers, UX/UI Designers, and Backend Engineers to translate business requirements into technical mobile specifications.• Ensure Quality: Own the mobile development lifecycle, from feature conception to deployment, including unit and end-to-end testing, code review, and production monitoring.• Mentor and Lead: Champion mobile engineering best practices and potentially mentor junior and mid-level engineers in React Native development.<strong>Key Objectives You'll Drive</strong>• Successfully launch and scale key user acquisition and activation features within the mobile application.• Improve key mobile performance metrics (e.g., load times, crash-free sessions) and maintain high-quality code standards.• Increase conversion rates within the mobile acquisition and activation funnels.• Help diversify our proprietary acquisition channels by leveraging mobile-specific features and experiences.</p><p><em><a href="https://hbr.org/2022/07/apply-to-a-job-even-if-you-dont-meet-all-criteria" rel="noopener noreferrer nofollow ugc" target="_blank">Research</a> in Diversity, Equity, and Inclusion suggests that individuals may hesitate to apply for jobs if they do not meet all the listed criteria. At Bitso, we value diversity and your unique strengths could be just what we're looking for. If this role excites you but you don't match every point in the description, we still want to hear from you.</em></p><p>#LI-Remote </p><h3>Who We Are</h3><p>With over 9 million users, Bitso is the leading cryptocurrency platform in Latin America. We are developing the cryptocurrency ecosystem in the region and enabling financial inclusion. We believe crypto is the future of finance, and we’re committed to making it useful by providing equal access to safe and intuitive financial products.</p><p>When we hire people for our team, we specifically test for the following traits in addition to our cultural values:</p><ul><li><p><strong>Mission-Driven</strong>: We seek individuals who are passionate about crypto and Bitso’s mission and resilient in facing industry challenges</p></li><li><p><strong>High Sense of Urgency</strong>: We prioritize candidates who demonstrate a high sense of urgency and responsibility.</p></li></ul><ul><li><p><strong>Exceptional Hard Skills</strong>: We seek individuals who possess exceptional skills in their respective fields, with no room for mediocrity.</p></li><li><p><strong>Self-Management</strong>: We look for individuals who can independently manage their work, career, and professional development.</p></li></ul><h3>Compensation & Benefits</h3><p>At Bitso, you are taking the front seat on the edge of crypto innovation, creating the next generation of crypto-powered products.</p><p>So for those willing to commit, adapt and pioneer the most important change of the century we offer:</p><ul><li><strong>Me Time</strong> program, including unlimited paid time off.</li><li><strong>Remote-first</strong> work environment.</li><li><strong>Employee Stock Option</strong> program.</li><li><strong>Zero trading fees</strong> through our Bitso Alpha app.</li><li><strong>Extended Family Leave</strong><strong>Policy:</strong> all birthing parents, non-birthing parents and adopting parents are eligible for a 4-months leave.</li><li><strong>Premium health, dental and life insurances</strong> in Mexico, Gibraltar, Colombia, USA, Brazil and Argentina.</li><li><strong>Monthly stipend</strong> for gym memberships, relaxation activities, sports equipment, cooking classes, books, entertainment and more.</li></ul><p>Want to leave an undoubtedly legacy with us? Fasten your seatbelt and join this spaceship, where you will find exponential growth and the opportunity to thrive!</p><ul><li>These are the applicable requisites, although equivalent competencies in any of the above will also be considered.</li><li>To see our Privacy Policy please click <a href="https://bitso.com/terms" rel="noopener noreferrer nofollow ugc" target="_blank">here</a>.</li></ul>

Fullstack Engineer (Mobile)

<h3>Working At Bitso</h3><p>We are a diverse team that takes pride in understanding the perspectives of others. We fully embrace working remotely and we are eager to act, improve and accelerate progress inside and outside of our organization.</p><p>To drive revolutionary changes in society and make crypto useful, we delight our customers with world-class products, deep care, and intentional empathy.</p><h3>Your Purpose </h3><p>As a Senior React Native Engineer II in our Liquidity Fleet, you’ll play a pivotal role in shaping our mobile application strategy. You’ll help to lead the transition from native development to React Native to our Alpha application. This is your opportunity to drive innovation, mentor talented engineers, and leave a lasting impact on our product and user experience. Collaborate with tech leaders and engineers on challenging, high-impact projects in a growth-focused environment, crafting cutting-edge applications that redefine our mobile future.</p><h3>Reports To</h3><p>Engineer Manager </p><h3>Who You Are </h3><h4><strong>Technical Expertise</strong></h4><ul><li>6+ years of professional software engineering experience, with at least 2+ years of proven expertise in React Native development.</li><li>Background in Android development (Kotlin/Java) to support our mobile transition.</li><li>Proficient in JavaScript, TypeScript, and React Native’s component-based architecture.</li><li>Skilled at architecting and delivering robust, scalable mobile solutions.</li></ul><p><strong>Leadership and Problem Solving:</strong></p><ul><li>Demonstrated success leading technical initiatives and driving cross-functional collaboration.</li><li>Exceptional analytical skills with a proactive approach to solving complex technical challenges.</li><li>Experience mentoring engineers and fostering a culture of continuous learning and innovation.</li><li>Ability to champion best practices and guide teams through architecture and implementation.</li></ul><p><strong>Communication and Collaboration</strong></p><ul><li>Strong verbal and written communication skills, with the ability to articulate technical concepts to both technical and non-technical stakeholders.</li><li>Skilled at driving team alignment to bring ambitious projects to life.</li></ul><p><strong>Preferred Qualifications</strong></p><ul><li>Familiarity with React-Native-Web to extend solutions across platforms.</li><li>Experience with Expo to streamline development workflows.</li><li>Experience with native iOS development (Swift/Objective-C).</li></ul><h3>What You Will Do </h3><ul><li>Help on leading the migration of our Alpha application from native to React Native, ensuring a seamless transition.</li><li>Work closely with product and design teams to continuously enhance our Alpha product offering.</li><li>Continuously identify and integrate the latest trends and technologies in React Native and mobile development.</li><li>Implement features, ensure high performance, and address performance bottlenecks in React Native applications.</li><li>Guide and mentor a team of engineers, sharing best practices and driving technical excellence.</li><li>Help design a scalable architecture tailored to our business needs.</li></ul><p><em><a href="https://hbr.org/2022/07/apply-to-a-job-even-if-you-dont-meet-all-criteria" rel="noopener noreferrer nofollow ugc" target="_blank">Research</a> in Diversity, Equity, and Inclusion suggests that individuals may hesitate to apply for jobs if they do not meet all the listed criteria. At Bitso, we value diversity and your unique strengths could be just what we're looking for. If this role excites you but you don't match every point in the description, we still want to hear from you.</em></p><h3>Who We Are</h3><p>With over 9 million users, Bitso is the leading cryptocurrency platform in Latin America. We are developing the cryptocurrency ecosystem in the region and enabling financial inclusion. We believe crypto is the future of finance, and we’re committed to making it useful by providing equal access to safe and intuitive financial products.</p><p>When we hire people for our team, we specifically test for the following traits in addition to our cultural values:</p><ul><li><p><strong>Mission-Driven</strong>: We seek individuals who are passionate about crypto and Bitso’s mission and resilient in facing industry challenges</p></li><li><p><strong>High Sense of Urgency</strong>: We prioritize candidates who demonstrate a high sense of urgency and responsibility.</p></li></ul><ul><li><p><strong>Exceptional Hard Skills</strong>: We seek individuals who possess exceptional skills in their respective fields, with no room for mediocrity.</p></li><li><p><strong>Self-Management</strong>: We look for individuals who can independently manage their work, career, and professional development.</p></li></ul><h3>Compensation & Benefits</h3><p>At Bitso, you are taking the front seat on the edge of crypto innovation, creating the next generation of crypto-powered products.</p><p>So for those willing to commit, adapt and pioneer the most important change of the century we offer:</p><ul><li><strong>Me Time</strong> program, including unlimited paid time off.</li><li><strong>Remote-first</strong> work environment.</li><li><strong>Employee Stock Option</strong> program.</li><li><strong>Zero trading fees</strong> through our Bitso Alpha app.</li><li><strong>Extended Family Leave</strong><strong>Policy:</strong> all birthing parents, non-birthing parents and adopting parents are eligible for a 4-months leave.</li><li><strong>Premium health, dental and life insurances</strong> in Mexico, Gibraltar, Colombia, USA, Brazil and Argentina.</li><li><strong>Monthly stipend</strong> for gym memberships, relaxation activities, sports equipment, cooking classes, books, entertainment and more.</li></ul><p>Want to leave an undoubtedly legacy with us? Fasten your seatbelt and join this spaceship, where you will find exponential growth and the opportunity to thrive!</p><ul><li>These are the applicable requisites, although equivalent competencies in any of the above will also be considered.</li><li>To see our Privacy Policy please click <a href="https://bitso.com/terms" rel="noopener noreferrer nofollow ugc" target="_blank">here</a>.</li></ul>

Senior React Native Engineer

<p>We are looking for a <strong>Mobile</strong><strong>Software Engineer</strong> to help build and evolve a decentralized mobile wallet powered by a deterministic Rust SDK. This role focuses primarily on Swift development while requiring strong systems thinking and comfort working across Swift ↔ Rust FFI boundaries. The tech stack that you will interact with will be Swift, Rust, Kotlin, Rust FFI, and Objective C, mostly in that order. You will be working with engineers and developers on the mobile team within our org, Dash Core Group. This is an opportunity to work remotely in a team that uses modern coding practices and operates without a centralized backend, prioritizing client-side verification and security.</p><h4>Responsibilities</h4><ul><li>Collaborate with engineers to design, implement, and ship new wallet features.</li><li>Implement wallet features on top of a deterministic SDK, ensuring correctness and security across the full stack.</li><li>Improve our mobile SDKs. This may involve improvements to the foundational Rust SDK.</li><li>We use AI-assisted development tools. Engineers are expected to critically evaluate and validate all generated code.</li><li>Improve our continuous integration.</li></ul><h4>Requirements</h4><ul><li>Either: </li><li class="ql-indent-1">3+ years professional software engineering experience, with significant experience in Swift (production iOS apps). </li><li class="ql-indent-1">Exceptional recent graduates with demonstrable systems, distributed systems, compiler, or cryptography experience.</li><li>Strong understanding of deterministic state machines and ability to reason about correctness in financial or security-sensitive systems.</li><li>Comfortable working across language boundaries (Swift ↔ Rust FFI), including understanding of memory ownership, threading, and error propagation.</li><li>Conceptual understanding of cryptographic primitives (hashes, signatures, key derivation, Merkle trees).</li><li>Experience building mobile applications that rely on complex local business logic or SDKs.</li><li>Strong debugging skills across stack boundaries (mobile ↔ SDK ↔ networking).</li><li>Proficient with Git and modern collaborative workflows.</li><li>Strong Linux/macOS command-line skills.</li><li>Ability to work remotely in a self-directed environment.</li><li>Strong written and spoken English.</li><li><strong>This is not a typical UI-focused mobile role. Candidates should be comfortable reasoning about state, correctness, and security in adversarial environments.</strong></li></ul><h4>Nice to Have</h4><ul><li>Working knowledge of Rust.</li><li>Experience working with Rust FFI or other foreign-function interfaces.</li><li>Experience with Android development.</li><li>Understanding of UTXO vs account-based blockchain models.</li><li>Familiarity with SPV or client-side transaction verification.</li><li>Experience with cryptographic or privacy-preserving systems.</li><li>Background in distributed systems.</li><li>Comfort verifying and correcting AI-generated code in security-sensitive environments.</li></ul><h4>Perks</h4><ul><li>Contribute to technology at the forefront of cryptocurrency.</li><li>Work on a fully remote team.</li><li>Work alongside passionate people.</li><li>This is an opportunity where you can have oversized impacts and drive innovation.</li><li>Work in an open-source environment.</li></ul><h4>Location / compensation</h4><ul><li>This is a fully remote position.</li><li>Compensation will be between 75k and 100k USD per annum, depending on matching of skillset.</li></ul><p><strong>About Dash﻿</strong></p><p>At Dash, our Goal is to increase financial freedom and opportunities for everyone. We develop products that enable payments on the blockchain and make cryptocurrency accessible for consumers, merchants, businesses, and developers. We’ve designed a payments platform that puts user experience first, obscures the technical complexity underneath, and reinvents how cryptocurrency works in the future.</p><p>Dash is a cryptocurrency originally based on the Bitcoin blockchain, augmented with additional features focused on payments, and is one of the most recognized and accepted cryptocurrencies.</p>

Job Title	Company Name	Salary	Location	Tags
Senior iOS Engineer	Binance		📍 Hong Kong · 1 other location	Web3DeveloperSeniorSwift
Staff Engineer - React Native and Mobile Native	Kraken Digital Asset Exchange			RemoteTradingSecurityDeveloper
Fullstack Engineer (Mobile)	Bitso		📍 Latin America	Web3ResearchDeveloperMarketing
Senior React Native Engineer	Bitso		📍 Latin America	Web3ResearchDeveloperTrading
Mobile Software Engineer	Dash Core Group	75k-100k/year	Remote	RemoteWeb3DeveloperEngineering

Web3 Objective-C Jobs

Expired Objective-C Jobs.

Past and filled jobs:

Senior iOS Engineer

Binance

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Hiring Objective-C Talent?