React Native Lead

🏢 Summary: The offer is for a .NET Developer responsible for designing and developing scalable server-side web applications and distributed systems in the gaming domain. The role focuses on building high-quality solutions, enhancing existing systems, and ensuring reliability across integrations while working in a Scrum team. It combines hands-on development with architectural responsibility and code quality ownership. 🗂️ Requirements: 3+ years of server-side web application development, Strong proficiency in .NET Framework, Strong proficiency in C#, Understanding of software architecture patterns, Experience with relational databases, Knowledge of unit testing practices, Ability to work in Scrum methodology, Intermediate English (reading/writing, daily meetings) 📃 Skills: .NET, C#, ASP.NET, ASP.NETCore, WebAPI, MVC, Docker, Kafka, Dapper, gRPC, WCF, Redis, JavaScript, VB, WebForms, SQL, Scrum, UnitTesting 🏢 Description: At Aristocrat Interactive, we are devoted to crafting innovative gaming experiences that captivate and entertain millions around the world. As a .NET Developer, you will play a pivotal role in upholding our reputation for excellence and innovation. Our mission is to bring happiness to life through the power of play, and we are committed to encouraging a culture of inclusion, collaboration, and relentless ambition. You'll be joining a team that thrives on tackling ambitious projects and delivering world-class solutions. Acts as the technical authority within the team — designing scalable architectures, guiding implementation, and ensuring reliability across distributed systems and integrations. What You'll Do Software Development : Develop high-quality software solutions using .NET technologies. Feature Development : Collaborate with cross-functional teams to create new features and enhance existing software. Maintenance and Support : Identify, resolve, and improve existing software issues efficiently. Investigate and analyze legacy systems. Team Collaboration: Assist and support other team members to achieve common goals. Scrum Participation: Work within a Scrum methodology, attending daily stand-ups, sprint planning, and retrospectives. Code Reviews: Participate in code reviews to ensure code quality and maintainability. Documentation: Write detailed guides for the software you create to help others understand and improve it later. Continuous Improvement: Stay updated with the latest tools and practices in .NET development to enhance processes and solutions. What We're Looking For 3+ years of server-side web application development experience. Strong knowledge and proficiency in the .NET Framework and C# language. Understanding of various software architecture types and patterns. Strong self-learning capabilities and willingness to acquire new skills as needed. Good communication and collaboration skills; a great teammate. Independent, responsible, proactive, and hard-working. Logical thinker with excellent problem-solving skills. English level: Intermediate — reading/writing documents, daily meetings with teams. Preferred Qualifications: Bachelor's Degree in Computer Science, Engineering, or a related field. Familiarity with Docker, Kafka, Dapper, gRPC, WCF, Redis, ASP.NET Core/Web API/MVC, VB, Web Forms, and JavaScript. Solid understanding of relational databases. Good knowledge of unit testing practices. Experience in iGaming or ILotteries development. Why Aristocrat? Aristocrat is a world leader in gaming content and technology, and a top-tier publisher of free-to-play mobile games. We deliver great performance for our B2B customers and bring joy to the lives of the millions of people who love to play our casino and mobile games. And while we focus on fun, we never forget our responsibilities. We strive to lead the way in responsible gameplay, and to lift the bar in company governance, employee wellbeing and sustainability. We’re a diverse business united by shared values and an inspiring mission to bring joy to life through the power of play. We aim to create an environment where individual differences are valued, and all employees have the opportunity to realize their potential. We welcome and encourage applications from all people regardless of age, gender, race, ethnicity, cultural background, disability status or LGBTQ+ identity. EEO M/F/D/V World Leader in Gaming Entertainment Robust benefits package Global career opportunities Our Values All about the Player Talent Unleashed Collective Brilliance Good Business Good Citizen

🏢 Summary: Senior leadership role responsible for defining and scaling QA strategy across multiple teams, driving full-stack test automation, CI/CD quality gates, and risk-based release governance. The position combines hands-on test architecture expertise with mentoring and cross-functional collaboration to improve release confidence across backend and client systems. Hybrid work model based in Gdansk or Krakow. 🗂️ Requirements: 7+ years QA experience, 3+ years leading QA across multiple teams, Hands-on automation and test architecture experience, Deep knowledge of full-stack testing, Experience with CI/CD pipeline integration, Implementation of risk-based testing, Experience with release governance, Experience with contract testing and service virtualization, Experience in cloud-based environments 📃 Skills: Selenium, Playwright, Cypress, REST, Postman, CI/CD, API, UI, E2E, Cloud, Telemetry, Observability 🏢 Description: At Product Madness, we bring happiness to millions of players by harnessing the happiness of play. As a Principal QA Lead , you will build and scale quality across multiple teams, embedding robust full-stack testing strategies and strengthening release confidence across backend services and client experiences. This is a senior leadership role combining strategy, people leadership, and technical authority. You will influence how quality operates at scale — driving automation excellence, CI/CD integration, and risk-based release governance across domains. Work mode: hybrid – 3 days per week from the Wave Office in Gdansk or Unity Office in Krakow. What You'll Do Define and drive QA strategy aligned with product and engineering roadmaps Architect scalable automation frameworks across API, UI, integration, and end-to-end layers (e.g., Selenium, Playwright, Cypress, REST Assured, Postman or similar tools) Strengthen CI/CD quality gates, improve test stability, reduce flakiness, and enhance release readiness practices Implement contract testing, service virtualization, and modern test data strategies in cloud-based environments Leverage observability and telemetry signals to improve quality insights and incident prevention Establish risk-based testing standards and trusted quality indicators used in leadership decision-making Lead root-cause analysis for high-impact incidents and translate findings into systemic improvements Mentor QA Leads and Senior QA Engineers, shaping standards, accountability, and engineering culture Partner closely with Engineering, Product, and Build leadership to embed quality ownership end-to-end What We're Looking For 7+ years of professional QA experience, including hands-on automation and test architecture 3+ years leading QA across multiple squads, streams, or domains Deep expertise in full-stack testing (backend services, front-end interface, end-to-end connectivity) and CI/CD pipeline integration Strong experience implementing risk-based testing and release governance for complex systems Proven ability to influence senior multi-functional collaborators with data-driven recommendations A pragmatic, outcome-focused approach — building scalable systems without unnecessary bureaucracy Nice to have: experience in gaming or live-service products, QA transformation initiatives, or scaling quality practices in growing organisations. Why Aristocrat? Aristocrat is a world leader in gaming content and technology, and a top-tier publisher of free-to-play mobile games. We deliver great performance for our B2B customers and bring joy to the lives of the millions of people who love to play our casino and mobile games. And while we focus on fun, we never forget our responsibilities. We strive to lead the way in responsible gameplay, and to lift the bar in company governance, employee wellbeing and sustainability. We’re a diverse business united by shared values and an inspiring mission to bring joy to life through the power of play. We aim to create an environment where individual differences are valued, and all employees have the opportunity to realize their potential. We welcome and encourage applications from all people regardless of age, gender, race, ethnicity, cultural background, disability status or LGBTQ+ identity. EEO M/F/D/V World Leader in Gaming Entertainment Robust benefits package Global career opportunities Our Values All about the Player Talent Unleashed Collective Brilliance Good Business Good Citizen Travel Expectations None Additional Information At this time, we are unable to sponsor work visas for this position. Candidates must be authorized to work in the job posting location for this position on a full-time basis without the need for current or future visa sponsorship.

🏢 Summary: The role involves building and maintaining scalable backend services for high-traffic gaming platforms using .NET technologies. The developer will design clean APIs, ensure system performance and reliability in production, and take ownership from concept to deployment. The position requires collaboration across teams to deliver robust, production-ready solutions. 🗂️ Requirements: Experience building web-based backend systems using .NET/.NET Core, Proficiency in C#, Experience with ASP.NET MVC, Experience with Web API, Understanding of performance, scalability, and reliability in production systems, Ability to debug complex backend issues, English proficiency for daily communication, Authorization to work without visa sponsorship 📃 Skills: .NET, .NETCore, C#, ASP.NET, MVC, WebAPI, Backend, APIs, Scalability, Performance, Debugging 🏢 Description: At Aristocrat Interactive, we don’t just build software — we build experiences played by millions. Behind every smooth gameplay, instant response, and flawless feature… there’s solid backend engineering. That’s where you come in. We’re looking for a .NET Developer who not only writes code, but builds systems that actually scale, perform, and survive real-world traffic. If you enjoy turning sophisticated problems into clean, efficient solutions — you’ll feel at home here. What You'll Do Build and evolve backend services powering high-traffic gaming platforms Build clean, scalable APIs and system components (no spaghetti, no shortcuts) Write code that doesn’t just work — but keeps working under pressure Collaborate with product, QA, and external partners to deliver real features (not just tickets) Review code, challenge ideas, and improve the standard for the whole team Debug complex issues — and actually fix the root cause, not just patch it Take ownership — from idea to production What We're Looking For Solid experience building web-based backend systems using .NET / .NET Core Proven command of C#, ASP.NET MVC, Web API You understand how systems behave in production — performance, reliability, scalability You think in solutions, not problems You can communicate your ideas clearly (English is enough for daily work) Work mode: hybrid – 3 days per week from the Unity Office in Krakow. Company Summary Aristocrat Interactive Aristocrat Interactive is Aristocrat Leisure Limited’s (ASX:ALL) regulated online Real Money Gaming (RMG) business and was formed in 2024 when the Anaxi and NeoGames businesses (Anaxi, NeoGames, Aspire Global, BtoBet, and Pariplay) came together.  The business is an industry leader in content and technology solutions for online RMG, with a full-service offering that includes content, proprietary technology platforms and a range of value added services across iLottery, iGaming and Online Sports Betting (OSB). About Aristocrat Aristocrat Leisure Limited (ASX: ALL) is a leading gaming content creation company powered by technology to deliver industry-leading casino games together with mobile games and online real money games, collectively entertaining millions of players worldwide, every day. Headquartered in Sydney, Australia, Aristocrat has three operating business units, spanning regulated land-based gaming (Aristocrat Gaming), social casino (Product Madness) and regulated online real money (Aristocrat Interactive). Our team of over 8,500 people across the globe are united by our company mission to bring joy to life through the power of play . Our Values All about the Player Talent Unleashed Collective Brilliance Good Business Good Citizen Travel Expectations None Additional Information At this time, we are unable to sponsor work visas for this position. Candidates must be authorized to work in the job posting location for this position on a full-time basis without the need for current or future visa sponsorship.

🏢 Summary: Lead the QA strategy for native iOS and Android applications, driving both manual and automated testing with a strong focus on building and scaling a robust Appium-based automation framework. The role combines hands-on automation work with team leadership to ensure high-quality, release-ready mobile products across multiple customers. You will define automation architecture, oversee quality metrics, and coordinate end-to-end mobile QA processes. 🗂️ Requirements: 3+ years of hands-on native mobile app testing (iOS and Android), Experience building and scaling mobile automation frameworks from scratch, Strong experience with Appium for mobile automation, Proven automation testing experience for native mobile apps, Strong proficiency in Java, Strong understanding of client-server applications, Experience using agentic AI for automated test creation and maintenance, Deep knowledge of test automation methodologies and QA practices, Understanding of software development lifecycle, Participation in agile development processes 📃 Skills: Appium, Java, iOS, Android, Automation, SpecFlow, AI, Client-Server, Agile, QA 🏢 Description: Aristocrat empowers customers with advanced platforms, top games, and full services globally. We are seeking a high-reaching QA Team Leader (Mobile and Automation). This role is crucial in driving our native mobile app QA strategy, ensuring detailed execution and delivery of high-quality products. Shape mobile QA at Aristocrat by using automation frameworks and collaborating with complementary teams. What You'll Do Lead the end-to-end QA strategy for native mobile apps (iOS and Android), covering both manual and automated testing. Define and implement a long-term automation architecture and roadmap using Appium, evolving it into a robust, production-ready framework. Coordinate all QA activities for multiple customers, ensuring coverage, consistency, and high-quality delivery. Set up and track quality metrics, test coverage data, and release-readiness checkpoints. Design and review functional, regression, and exploratory tests. Collaborate with engineering, product, and customer success teams to ensure robust testing for new features, integrations, and performance. Recruit, mentor, and handle QA engineers, with a mix of hands-on support and team enablement. Coordinate manual and automation efforts, ensuring coverage and alignment for each release. Participate in agile ceremonies and proactively chip in to planning and quality reviews. What We're Looking For 3+ years of hands-on experience in mobile app testing (native iOS and Android) – Required. Confirmed experience building and scaling mobile automation frameworks from the ground up – Required. Strong experience with Appium for mobile automation – Required. Confirmed experience in automation testing of native mobile apps – Required. Strong proficiency in Java – Required. Strong understanding of Client/Server applications – Required. Outstanding analytical and problem-solving skills – Required. Experience using agentic AI to create, maintain, and fix automated tests, including SpecFlow scenarios, regression coverage, flaky test analysis, and failure investigation. Strong communication and collaboration skills, able to effectively work with multi-functional teams and engage both technical and non-technical collaborators. Experience in a multi-customer / multi-tenant product or B2B environment. Deep knowledge of test automation approaches and procedures, as well as overall QA practices. Ability to balance multiple challenging priorities in a fast-paced environment. Good understanding of the entire software development lifecycle. SOLID development habits and practices. Proactive, diligent, with strong learning ability and interpersonal communication skills. Proficient in English for daily communication. Aristocrat Interactive Aristocrat Interactive is Aristocrat Leisure Limited’s (ASX:ALL) regulated online Real Money Gaming (RMG) business and was formed in 2024 when the Anaxi and NeoGames businesses (Anaxi, NeoGames, Aspire Global, BtoBet, and Pariplay) came together.  The business is an industry leader in content and technology solutions for online RMG, with a full-service offering that includes content, proprietary technology platforms and a range of value added services across iLottery, iGaming and Online Sports Betting (OSB). About Aristocrat Aristocrat Leisure Limited (ASX: ALL) is a leading gaming content creation company powered by technology to deliver industry-leading casino games together with mobile games and online real money games, collectively entertaining millions of players worldwide, every day. Headquartered in Sydney, Australia, Aristocrat has three operating business units, spanning regulated land-based gaming (Aristocrat Gaming), social casino (Product Madness) and regulated online real money (Aristocrat Interactive). Our team of over 8,500 people across the globe are united by our company mission to bring joy to life through the power of play . Our Values All about the Player Talent Unleashed Collective Brilliance Good Business Good Citizen Additional Information This role is subject to mandatory background screening and regulatory approvals. As part of your employment with Aristocrat, you may be required to complete a criminal background check, submit fingerprints, and obtain licenses or registrations with applicable gaming regulatory authorities. Aristocrat operates in a highly regulated environment and holds licenses in over 340 gaming jurisdictions worldwide. To meet our global compliance obligations, you will be required to provide the disclosure of relevant personal and background information to government agencies, sovereign nations/tribal regulators, and other applicable gaming regulatory bodies. This is a condition of Aristocrat’s gaming licenses. The specific information required may vary depending on the jurisdiction and project assignment.

🏢 Summary: Oferta dotyczy rozwoju i skalowania międzynarodowej aplikacji mobilnej z obszaru finansów, inwestowania i crypto z wykorzystaniem React Native i React. Rola obejmuje tworzenie funkcjonalności związanych z danymi rynkowymi, integracjami blockchain oraz współtworzenie architektury produktu z aktywnym wykorzystaniem narzędzi AI. Poszukiwana jest samodzielna osoba mająca doświadczenie w aplikacjach mobilnych i integracjach API oraz dbająca o jakość, bezpieczeństwo i wydajność aplikacji. 🗂️ Requirements: Bardzo dobra znajomość React Native, Bardzo dobra znajomość React, Zaawansowana znajomość TypeScript, Zaawansowana znajomość JavaScript, Doświadczenie w tworzeniu i publikowaniu aplikacji na iOS i Android, Doświadczenie w integracji z REST API, Dobra znajomość HTML, Dobra znajomość CSS, Praktyczna znajomość Git, Podstawowa lub dobra znajomość Node.js, Znajomość architektury, testowania i bezpieczeństwa aplikacji, Umiejętność samodzielnego rozwiązywania problemów, Odpowiedzialność za jakość kodu, Swobodne korzystanie z narzędzi AI wspierających programowanie, Znajomość Claude 📃 Skills: React, ReactNative, TypeScript, JavaScript, REST, HTML, CSS, Git, Node.js, iOS, Android, Claude, API, WebSocket, WalletConnect, web3, Blockchain 🏢 Description: Budujemy zaawansowaną, międzynarodową aplikację mobilną z obszaru finansów, inwestowania i rynku crypto. Produkt łączy dane rynkowe, analitykę, rozwiązania AI, informacje on-chain, monitoring portfeli oraz integracje z zewnętrznymi platformami finansowymi. Do naszego zespołu poszukujemy osoby na stanowisko React / React Native Developer , która będzie miała realny wpływ na architekturę, rozwój i skalowanie aplikacji wykorzystywanej przez użytkowników na wielu rynkach. Nie szukamy osoby, która chce być jedynie wykonawcą kolejnych ticketów. Szukamy developera, który potrafi samodzielnie myśleć, proponować rozwiązania, szybko testować nowe pomysły i brać odpowiedzialność za tworzone funkcjonalności. Zakres obowiązków: rozwój od podstaw oraz dalsze skalowanie wieloplatformowej aplikacji mobilnej w React Native, rozwój aplikacji webowych i paneli użytkownika w React, tworzenie funkcjonalności związanych z danymi finansowymi, analizą rynków, portfelami crypto i narzędziami inwestycyjnymi, integracja aplikacji z zewnętrznymi API, platformami finansowymi, blockchainami oraz dostawcami danych, ścisła współpraca z zespołem backendowym, UX/UI designerami oraz osobami odpowiedzialnymi za produkt, dbanie o wysoką jakość kodu, bezpieczeństwo, wydajność i stabilność aplikacji, optymalizacja działania aplikacji na urządzeniach z systemami iOS i Android, publikowanie oraz aktualizowanie aplikacji w Apple App Store i Google Play, analiza błędów, monitoring aplikacji oraz szybkie reagowanie na problemy produkcyjne, udział w podejmowaniu decyzji technologicznych i projektowaniu architektury kolejnych modułów, śledzenie nowych trendów, bibliotek i rozwiązań w obszarze aplikacji mobilnych, AI, fintechu i blockchainu. AI jako codzienne narzędzie pracy Bardzo mocno wykorzystujemy sztuczną inteligencję w procesie tworzenia oprogramowania. Oczekujemy, że AI będzie dla Ciebie realnym narzędziem zwiększającym szybkość i jakość pracy, a nie jedynie technologiczną ciekawostką. Na co dzień korzystamy między innymi z Claude do: tworzenia i refaktoryzacji kodu, planowania architektury aplikacji, analizy istniejącego codebase’u, wykrywania błędów i problemów wydajnościowych, przygotowywania testów, dokumentowania rozwiązań, szybkiego prototypowania nowych funkcjonalności, automatyzacji powtarzalnych elementów pracy developerskiej. Szukamy osoby, która potrafi świadomie pracować z narzędziami AI, odpowiednio formułować zadania, weryfikować generowane rozwiązania i wykorzystywać AI do szybszego dostarczania wysokiej jakości produktu. Wymagania: bardzo dobra znajomość React Native, bardzo dobra znajomość React, zaawansowana znajomość TypeScript i JavaScript, doświadczenie w tworzeniu oraz publikowaniu aplikacji na iOS i Android, doświadczenie w integracji z REST API, dobra znajomość HTML i CSS, praktyczna znajomość Git, podstawowa lub dobra znajomość Node.js, umiejętność samodzielnego rozwiązywania problemów, odpowiedzialność za jakość dostarczanego kodu, znajomość dobrych praktyk dotyczących architektury, testowania i bezpieczeństwa aplikacji, swobodne korzystanie z narzędzi AI wspierających programowanie, w szczególności Claude. Dużym atutem będzie: doświadczenie w budowie aplikacji finansowych, inwestycyjnych, tradingowych lub fintechowych, doświadczenie w tworzeniu aplikacji związanych z crypto, blockchainem, portfelami i danymi on-chain, znajomość integracji z giełdami, DEX-ami, walletami lub protokołami blockchain, doświadczenie w pracy z danymi rynkowymi aktualizowanymi w czasie rzeczywistym, znajomość WebSocketów i rozwiązań event-driven, doświadczenie w projektowaniu bezpiecznych procesów związanych z transakcjami finansowymi, znajomość WalletConnect, bibliotek web3 lub rozwiązań do integracji portfeli, doświadczenie w budowie produktów wykorzystujących modele językowe i rozwiązania AI, zainteresowanie rynkami finansowymi, tradingiem lub technologią blockchain. Co oferujemy: realny wpływ na rozwój produktu od jego wczesnego etapu, pracę nad międzynarodową aplikacją z obszaru finansów, AI i crypto, dużą samodzielność i swobodę w proponowaniu rozwiązań, możliwość współtworzenia architektury technologicznej produktu, szybkie tempo pracy bez korporacyjnej biurokracji, bezpośrednią współpracę z osobami odpowiedzialnymi za produkt, design i biznes, dostęp do nowoczesnych technologii i narzędzi AI, możliwość rozwoju kompetencji w obszarze fintechu, blockchainu i sztucznej inteligencji, satysfakcję z obserwowania, jak stworzone przez Ciebie rozwiązania trafiają bezpośrednio do użytkowników. Jeżeli chcesz budować ambitny produkt technologiczny, mieć realny wpływ na podejmowane decyzje i nie interesuje Cię rola kolejnego trybiku w dużej organizacji, ta oferta jest dla Ciebie.

🏢 Summary: The offer is for a Manual QA Engineer responsible for testing mobile, web, and client-server applications, ensuring product quality through functional and regression testing. The role involves close collaboration with developers and product owners, defect investigation, and comprehensive test documentation. It requires strong technical troubleshooting skills and hands-on experience with APIs, SQL, and debugging tools. 🗂️ Requirements: Minimum 2 years of experience in testing mobile, web, and client-server applications, Practical experience with REST API, Hands-on experience with SQL, Experience with debugging tools, Experience in writing test documentation (STD), Experience in functional and regression testing, Ability to investigate, report, and track defects, Upper-intermediate level of English 📃 Skills: REST, SQL, Chrome, Fiddler, Reshaper, API, STD, Client-Server, Mobile, Web 🏢 Description: Join Aristocrat in Bringing Joy to Life Through the Power of Play. Be part of our growing global team where people come first because they fuel our success. Here, it’s All About the Player and we create a world of its own for everyone, everywhere with premium casino and world-class digital and mobile products. Our value of Good Business, Good Citizen ensures that corporate growth and responsible gameplay go hand in hand to help our industry remain sustainable.Aristocrat offers a highly diverse, inclusive, and equitable culture as well as the professional tools and resources to ensure your Talent is Unleashed. We achieve success through Collective Brilliance. Individually, we are great, but together, we are unstoppable. Aristocrat enhances the player experience—and careers—with opportunities featuring meaningful challenges, strong advancement potential, and global exposure.Explore a Career with Our Team: Aristocrat Interactive We are growing significantly and are now looking for Manual QA Engineer to join our exciting team. What You'll Do Participating in requirements analysis and review Functional and regression tests design and execution Collaborating with the development team, QAs, and team management Developing testing documentation: test cases, checklists Handling defects: investigating, reporting, and tracking them to resolution Assistance for developers with the analysis and investigation of defects Communication with Product Owners for requirements clarification and analysis What We're Looking For At least 2+ years of real working experience in testing mobile and web applications and Client/Server applications Practical experience with REST API – a must Direct experience working with debugging tools (e.g., Chrome DevTools, Fiddler, Reshaper) Hands-on experience with SQL – a must Experience in writing test documents (STD) — a must Experience with 3rd party system integrations - desirable Experience writing clear and comprehensive test documentation - a must Understanding how components interact with each other to identify issues quickly and accurately Strong technical skills, ability to deep dive into sophisticated problems & find their root cause; Hard-worker, responsible, details oriented, self-organized, initiator, excellent learning abilities, great communication and interpersonal skills; English level — Upper-intermediate

🏢 Summary: The offer is for a Mobile Developer responsible for building high-performing, scalable enterprise mobile applications using React Native for iOS and Android. The role covers full software development lifecycle within an Agile team, focusing on low-latency, mission-critical systems. It involves architecture, development, release management, and performance optimization of mobile applications. 🗂️ Requirements: Minimum 3 years of mobile app development experience, Commercial experience with Android and iOS development, Experience deploying apps to Google Play and App Store, Strong knowledge of React Native and its core principles, Proficiency in JavaScript and TypeScript, Experience with full mobile development lifecycle, Knowledge of ES6, ES10 and JSX, Experience with state management and routing in React Native, Experience optimizing mobile app performance and memory management, Degree in Computer Science, Engineering or related field 📃 Skills: ReactNative, JavaScript, TypeScript, Android, iOS, ES6, ES10, JSX, Jest, JUnit, Microservices, Docker, Kubernetes, Azure, SQL, NoSQL, Agile 🏢 Description: Connecting clients to markets – and talent to opportunity With 4,300 employees and over 400,000 retail and institutional clients from more than 80 offices spread across five continents, we’re a Fortune-100, Nasdaq-listed provider, connecting clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors. At StoneX, we offer you the opportunity to be part of an institutional-grade financial services network that connects companies, organizations, and investors to the global markets ecosystem. As a team member, you'll benefit from our unique blend of digital platforms, comprehensive clearing and execution services, personalized high-touch support, and deep industry expertise. Elevate your career with us and make a significant impact in the world of global finance. Corporate: Engage in a deep variety of business-critical activities that keep our company running efficiently. From strategic marketing and financial management to human resources and operational oversight, you’ll have the opportunity to optimize processes and implement game-changing policies. Responsibilities Position Purpose: We are looking for a Mobile Developer with experience in building high-performing, scalable, enterprise-grade applications. The role will focus on developing complex mobile applications build on React Native running across IOS and Android devices. You will be part of a talented engineer team that works on low-latency mission-critical applications. Roles and responsibilities include application architecture and development across full software development lifecycle from concept and design to testing, collaborating with like-minded engineers. Primary Duties will include: Primary focus on mobile development Contribute to all phases of the development lifecycle working within Agile methodology Prepare and produce releases of software components Support continuous improvement by investigating technologies and presenting for architectural review Mentor and supports engineers with technical direction and best practices Qualifications To land this role you will need: Minimum 3 years’ experience in mobile app development Experience in development of Android/iOS applications and have deployed on Google Play/App Store Strong knowledge with architecture and implementation of Android or iOS applications, experience with full mobile development life cycle Thorough understanding of React Native and its core principles Strong knowledge with JavaScript & TypeScript, virtual DOM, asynchronous programming Understanding & experience in ES6, ES10, JSX Experience working with popular libraries for networking, asynchronous, image loading, etc. In-depth knowledge with React Native framework, patterns for code reuse, state management libraries, routing architecture Experience optimizing app performance, manage memory, and reduce load times What makes you stand out: Experience with TDD/BDD, testing framework (Jest/React-testing-library/JUnit) Some experience developing distributed systems using Microservice architecture (event-based) Some experience with containerisation (Docker, Kubernetes) Some experience with cloud platforms (Azure) Knowledge of Relational Databases SQL and No-SQL databases Previous experience working with global teams Education: BS/MS degree in Computer Science, Engineering or a related subject Working Environment: Hybrid (4 days per week in office)

🏢 Summary: The role involves developing and maintaining high-quality React Native mobile applications for iOS and Android, supporting major gaming brands. The position focuses on delivering performant, user-friendly apps and contributing to new product launches and market expansions. It requires strong mobile expertise and collaboration within an international team. 🗂️ Requirements: Minimum 5 years of mobile development experience for Android and iOS, Strong experience with React Native, Proficiency in TypeScript, Strong understanding of core JavaScript concepts, Experience with cloud integrations, Experience working with REST APIs, Experience with GraphQL, Experience with Firebase, Experience with Datadog, Experience with version control systems 📃 Skills: React, ReactNative, TypeScript, JavaScript, REST, GraphQL, Firebase, Datadog, Git, Cloud 🏢 Description: ABOUT THE ROLE Join our team of skilled developers working on mobile applications for top LeoVegas brands like BetMGM, BetUK, and Expekt. With offices across Europe in Sweden, Poland, Spain, and the UK, we create high-performance and innovative solutions for both iOS and Android platforms. We’re looking for a React Native Developer with a mobile-first mindset and an understanding of native development to help drive our projects forward. We are expanding our React Native team in Poland and are searching for talented engineers who are passionate about mobile development and eager to build innovative gaming experiences. YOU WILL BE RESPONSIBLE FOR: Develop and maintain high-quality React native applications for both iOS and Android platforms Ensure a smooth, engaging, and intuitive user experience Work on apps for LeoVegas brands such as BetMGM, BetUK, and Expekt Improve and enhance applications with a strong product focus Contribute to launching new brands and expanding into new markets OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS At least 5 years of experience working as a mobile developer for Android and iOS Strong experience with React Native Proficiency in TypeScript Good understanding of core JavaScript principles and concepts Experience with cloud integrations Experience with Rest API, Datadog, GraphQL, Firebase and version control NICE TO HAVES Experience with Kotlin, Objective-C or Swift Experience writing Unit Tests Hands-on experience optimizing mobile performance Experience with CI/CD integrations WHO WE ARE At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the iGaming industry. We’re a team of over 1800 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 16 offices worldwide. What we offer: you can work in a hybrid model , we would like you to show up in our Warsaw office three times a week , the rest of the days of the week are up to you, we work in European office hours, ​​ 800 PLN monthly for benefits (we have a platform with sport cards and different options for private healthcare), welcome package, no dress code, international teams, 💻 Equipment: MacBook Pro 16"/14'' + smartphone (iPhone 15 or Samsung Galaxy S24 - it’s your choice). Our office: located in the centre of Warsaw (Królewska 16) bike parking 🚲 chillout zones (we have a billiard table too! 🎱) free snacks 🥜 company breakfast every Monday 🥪 Our recruitment process: 45-minute phone/Zoom call with our recruiter 90-minutes technical interview max. 40 min online personality and logic test (not live) 1-hour cultural fit interview **As our company working language is English, we’d like to see your CV in English please** More about us: Careers site: www.leovegasgroup.com/careers LinkedIn: https://www.linkedin.com/company/leovegasgroup/ Instagram: www.instagram.com/lifeatleo/

🏢 Summary: The offer is for a React Native Developer to build and maintain high-performance mobile applications for iOS and Android within leading gaming brands. The role focuses on delivering scalable, user-centric solutions, enhancing existing apps, and supporting new market launches. It requires strong cross-platform mobile expertise and collaboration in an agile environment. 🗂️ Requirements: Minimum 5 years experience in mobile development for Android and iOS, Strong commercial experience with React Native, Proficiency in TypeScript, Strong knowledge of core JavaScript principles, Experience with cloud integrations, Experience working with REST APIs, Experience with GraphQL, Experience with Firebase, Experience with Datadog, Experience with version control systems 📃 Skills: ReactNative, TypeScript, JavaScript, REST, GraphQL, Firebase, Datadog, Git, Android, iOS, Cloud 🏢 Description: ABOUT THE ROLE Join our team of skilled developers working on mobile applications for top LeoVegas brands like BetMGM, BetUK, and Expekt. With offices across Europe in Sweden, Poland, Spain, and the UK, we create high-performance and innovative solutions for both iOS and Android platforms. We’re looking for a React Native Developer with a mobile-first mindset and an understanding of native development to help drive our projects forward. We are expanding our React Native team in Poland and are searching for talented engineers who are passionate about mobile development and eager to build innovative gaming experiences. YOU WILL BE RESPONSIBLE FOR: Develop and maintain high-quality React native applications for both iOS and Android platforms Ensure a smooth, engaging, and intuitive user experience Work on apps for LeoVegas brands such as BetMGM, BetUK, and Expekt Improve and enhance applications with a strong product focus Contribute to launching new brands and expanding into new markets OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: ESSENTIAL SKILLS At least 5 years of experience working as a mobile developer for Android and iOS Strong experience with React Native Proficiency in TypeScript Good understanding of core JavaScript principles and concepts Experience with cloud integrations Experience with Rest API, Datadog, GraphQL, Firebase and version control NICE TO HAVES Experience with Kotlin, Objective-C or Swift Experience writing Unit Tests Hands-on experience optimizing mobile performance Experience with CI/CD integrations WHO WE ARE At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the iGaming industry. We’re a team of over 1800 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 16 offices worldwide. What we offer: you can work in a hybrid model , we would like you to show up in our Warsaw office three times a week , the rest of the days of the week are up to you, we work in European office hours, ​​ 800 PLN monthly for benefits (we have a platform with sport cards and different options for private healthcare), welcome package, no dress code, international teams, 💻 Equipment: MacBook Pro 16"/14'' + smartphone (iPhone 15 or Samsung Galaxy S24 - it’s your choice). Our office: located in the centre of Warsaw (Królewska 16) bike parking 🚲 chillout zones (we have a billiard table too! 🎱) free snacks 🥜 company breakfast every Monday 🥪 Our recruitment process: 45-minute phone/Zoom call with our recruiter 90-minutes technical interview max. 40 min online personality and logic test (not live) 1-hour cultural fit interview **As our company working language is English, we’d like to see your CV in English please** More about us: Careers site: www.leovegasgroup.com/careers LinkedIn: https://www.linkedin.com/company/leovegasgroup/ Instagram: www.instagram.com/lifeatleo/

🏢 Summary: Senior React Native Engineer role focused on building and shipping cross-platform mobile applications using React Native and Expo, alongside developing web apps in ReactJS and APIs in Node.js. The position involves full ownership of the feature lifecycle, from architecture and implementation to CI/CD and production monitoring, using TypeScript and AI-assisted development tools. Work is delivered in an Agile, product-centric environment with emphasis on quality, performance, and collaboration. 🗂️ Requirements: 4+ years of professional software engineering experience, Experience developing production software, Experience in Agile or team-based development environments, Proficiency in JavaScript, Proficiency in Node.js, Proficiency in ReactJS, Proficiency in React Native, Experience with REST APIs and service-based architectures, Experience with databases and data persistence concepts, Ability to follow established architecture and development standards, Strong problem-solving and troubleshooting skills, Ability to collaborate effectively within an engineering team, Good communication skills, Bachelor’s degree in Computer Science, Engineering, or related field or equivalent practical experience, Upper-intermediate English level 📃 Skills: JavaScript, TypeScript, Node.js, ReactJS, React, ReactNative, Expo, REST, APIs, Databases, CI/CD, Claude, GitHubCopilot, Agile, Codility 🏢 Description: ID73490 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Senior React Native Engineer to build and ship cross-platform mobile apps using React Native and Expo while developing web applications in ReactJS and APIs in Node.js for a franchisee engineering team. You will own the engineering lifecycle for your features — architecture, implementation, testing, CI/CD, and production monitoring — writing clean TypeScript and actively using AI tools including Claude and GitHub Copilot as a development accelerator. The role follows Agile practices in a collaborative, product-centric engineering environment. What you will do Build and ship cross-platform mobile apps using React Native and Expo (iOS and Android); Develop web applications in ReactJS, sharing business rule libraries with mobile apps; Design, develop, and maintain APIs in NodeJS to support these applications; Use Claude or Github Copilot as a development accelerator, generating code scaffolding, writing and reviewing tests, creating documentation and prototyping solutions; Own the engineering lifecycle for your features: architecture, implementation, testing, CI/CD, and production monitoring; Write clean, well-tested TypeScript code; maintain high standards through code review and documentation; Optimize application performance for speed, responsiveness, memory, and offline capability; Debug, troubleshoot, and resolve software defects and production issues; Participate in Agile or product-centric delivery practices including sprint planning and retrospectives; Learn and apply new technologies, tools, and patterns to improve system quality and team effectiveness. Must haves Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience; 4+ years of professional software engineering experience focused on backend and cloud infrastructure; Strong experience with JavaScript , Node.js , and TypeScript ; Strong understanding of RESTful APIs , Microservices architecture, and event-driven systems; Experience working with databases, including PostgreSQL , and data persistence concepts; Hands-on experience with Microsoft Azure and Amazon Web Services (AWS) ; Deep experience with Infrastructure as Code using Terraform and CI/CD using Azure DevOps ; Experience with legacy platform migrations, ETL processes, and data hygiene; Experience developing secure, high-quality, and maintainable code following industry security best practices; Familiarity with Dynatrace and CloudWatch ; Upper-intermediate English level. The benefits of joining us Professional growth: Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation: We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects: Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime: Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!