Senior Android Mobile Developer

🏢 Summary: Senior Android Mobile Developer role focused on building and enhancing Android test tools and backend components within a Token ID ecosystem for secure payment solutions. The position involves developing high-impact mobile applications and ensuring scalable, high-performance integrations with backend services. Work is delivered in a hybrid model as part of a long-term B2B contract. 🗂️ Requirements: 7+ years of professional experience, Strong Android development experience, Proficiency in Java 21, Experience with Spring Boot, Experience with REST APIs and Web Services, Knowledge of SQL, Experience with Kubernetes, Experience with Docker, Experience with Jenkins, Proficiency with IntelliJ, Experience with Claude, Experience with GenAI 📃 Skills: Android, Java, Spring, REST, SQL, Kubernetes, Docker, Jenkins, IntelliJ, Claude, GenAI 🏢 Description: We are looking for an experienced Senior Android Mobile Developer to join a project for a world-leading payment technology company . You will work on advanced Android tools within a Token ID ecosystem, contributing to high-impact mobile applications used globally. 🔧 Project Overview The project focuses on Token ID Android Tools development , including multiple mobile applications supporting secure payment solutions. 📍 Location & Work Model Location: Warsaw or Gdansk Work Mode: Hybrid (1-2 days hybrid from the office) ⏳ Contract Details Contract Type: B2B (details to be shared) Daily Rate: 1.100 PLN/day – 1.300 PLN/day 👤 Experience Minimum 7+ years of professional experience 🛠 Mandatory Skills Please ensure your CV clearly reflects hands-on experience with the following: Android Development Java 21 Spring Boot REST APIs & Web Services SQL Kubernetes (k8s) Docker Jenkins IntelliJ Claude Code GenAI 📱 Responsibilities Develop and maintain new features for Android test tools and their backend components Design, develop, and enhance Android-based tool applications within the Token ID ecosystem Work on the following engagement components: Issuer Mobile Application TR Mobile Application Terminal Mobile Application Demo Wallet Ensure high-quality, scalable, and well-performing code Optimize performance and ensure seamless backend integration Collaborate with cross-functional teams across the full SDLC Debug, troubleshoot, and continuously improve applications 🚀 Join us and be part of a cutting-edge project for a global payment technology leader, where your work will directly impact secure, large-scale mobile solutions used worldwide.If you’re ready to take on a challenging Android role and work with modern technologies - we’d love to hear from you!

🏢 Summary: Opportunity for a Senior Android Developer to build and scale a large consumer mobile application used daily by millions across Europe. The role focuses on delivering a high-quality native Android experience, contributing to architecture decisions, and improving engineering standards within a growing product. You will work in cross-functional teams to develop scalable, maintainable, and high-performance mobile solutions. 🗂️ Requirements: 5+ years commercial experience in Android development, Strong hands-on experience with Kotlin, Strong hands-on experience with Java, Experience refactoring and improving existing codebases, Solid understanding of MVVM architecture, Knowledge of Clean Architecture principles, Understanding of SOLID principles, Experience with Git, Experience with CI/CD pipelines, Experience with release management processes, Strong knowledge of Android development best practices, Understanding of Material Design principles, Experience working in Agile cross-functional teams, Professional English proficiency 📃 Skills: Android, Kotlin, Java, MVVM, CleanArchitecture, SOLID, Git, CI/CD, MaterialDesign, Agile 🏢 Description: Senior Android Developer About the Project Join a team building one of Europe's leading mobile applications, used daily by millions of users. The product is undergoing rapid growth and international expansion, with a strong focus on scaling its mobile platform and delivering a best-in-class native Android experience across multiple European markets. We are looking for an experienced Senior Android Developer who wants to have a real impact on product development, mobile architecture, and engineering standards while working on a large-scale consumer application. Your Responsibilities Develop high-quality, testable, and maintainable Android applications. Contribute to architectural decisions and help build scalable mobile solutions. Participate in code reviews and promote engineering best practices. Collaborate closely with Product Managers, Designers, QA Engineers, and other development teams. Create and maintain technical documentation and specifications. Continuously improve development processes, tools, and workflows. Evaluate and implement new technologies to enhance application performance and development efficiency. Requirements 5+ years of commercial experience in Android development. Strong hands-on experience with Kotlin and Java. Proven experience in refactoring and improving existing codebases. Solid understanding of MVVM, Clean Architecture, and SOLID principles. Experience with Git, CI/CD pipelines, and release management processes. Strong knowledge of Android development best practices. Understanding of Material Design and modern mobile UI/UX principles. Experience working in Agile, cross-functional teams. Good communication skills and professional English proficiency. Nice to Have Experience working on large-scale mobile applications with a significant user base. Familiarity with modern Android libraries and frameworks. Experience with performance optimization and application monitoring. Interest in mobile platform development and engineering excellence.

🏢 Summary: Long-term remote B2B opportunity for a Senior Android Developer to build and scale high-impact mobile applications used by millions of users across Europe. The role focuses on developing high-quality Android solutions, improving performance and scalability, and contributing to architectural decisions in an agile environment. The position offers up to 170 PLN/h and full remote work from Poland. 🗂️ Requirements: Strong experience in Android development, Proficiency in Kotlin, Proficiency in Java, Hands-on experience with MVVM architecture, Hands-on experience with Clean Architecture, Knowledge of SOLID principles, Experience with CI/CD pipelines, Experience with release processes, Experience with version control systems, Understanding of UI/UX principles, Knowledge of Material Design, Ability to work in an agile cross-functional team 📃 Skills: Android, Kotlin, Java, MVVM, CleanArchitecture, SOLID, CI/CD, Git, MaterialDesign 🏢 Description: Senior Android Developer (Remote) 📍 Work mode: 100% remote from Poland 💸 Salary: up to 170 PLN/h on B2B contract ⌛ Project duration: long-term About the client: We are looking for an experienced Senior Android Developer to join a long-term, fully remote project focused on building and scaling high-impact mobile applications used by millions of users across Europe. You will contribute to the development of a highly recognizable mobile platform, playing a key role in enhancing application performance, scalability, and user experience, while collaborating with cross-functional teams in an agile environment. Key Responsibilities: Develop high-quality, testable, and maintainable Android applications. Actively participate in technical discussions and contribute to architectural decisions. Ensure code quality through regular code reviews and adherence to best practices and standards. Collaborate with product, design, and backend teams to deliver new features. Refactor and improve existing code to enhance performance and maintainability. Create and maintain technical documentation (architecture, processes, and implementation details). Continuously evaluate and implement new technologies to improve efficiency and product quality. Requirements: Strong experience in Android development using Kotlin and Java. Hands-on experience with modern mobile architectures such as MVVM, Clean Architecture, and SOLID principles. Ability to work both independently and within a cross-functional agile team. Experience with CI/CD pipelines, release processes, and version control systems (e.g., Git). Good understanding of UI/UX principles, including Material Design. Strong problem-solving skills and attention to details Nice to Have: Experience working on scalable applications with large user bases. Familiarity with performance optimization and mobile application scaling. What We Offer: Fully remote work model. Long-term collaboration on a B2B contract. Benefits package including: Multisport card, private medical care, health insurance Recruitment Process: Live Coding Session (90 minutes) System Design Interview (90 minutes) Hiring Manager Interview (60 minutes) Technical/Behavioral Interview (Bar Raiser – 60 minutes) Final Decision and Offer Co zyskasz dzięki aplikacji na ofertę Antal? Gdy Twoja aplikacja zostanie rozpatrzona pozytywnie (zostaniesz zaproszony/a do procesu), otrzymasz wsparcie Konsultanta/Konsultantki, który/a utrzyma z Tobą stały kontakt (mailowo lub telefonicznie), pomoże Ci przygotować się do rozmowy rekrutacyjnej z przyszłym pracodawcą oraz zatroszczy się o jakość procesu rekrutacyjnego, w którym aktualnie bierzesz udział. Kim jesteśmy? Jesteśmy liderem rekrutacji specjalistów i menedżerów oraz doradztwa w obszarze HR. Marka obecna jest w 35 krajach, w Polsce działa od 1996 roku. Przez ten czas zbudowaliśmy wiele karier kandydatów, dzięki elastycznemu i kompleksowemu podejściu do wszystkich rekrutacji. Antal tworzy ponad 130 profesjonalnych konsultantów ds. rekrutacji, którzy są oni nie tylko skutecznymi rekruterami, ale także wykwalifikowanymi doradcami, specjalizującymi się zarówno w zakresie wybranego sektora, jak i stanowiska. Sprawdź inne aktualne oferty pracy na: https://antal.pl/dla-kandydata Zaobserwuj nasz profil na LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: B2B contract for a Senior Android Developer to design and develop a mobile banking application for Android in a fully remote model. The role focuses on building new features, integrating internal and external APIs, ensuring high code quality, security, and performance, and supporting CI/CD and release processes. The position involves active contribution to architectural decisions and product development. 🗂️ Requirements: Minimum 6 years of Android development experience, Experience in at least two commercial Android projects, Strong experience with REST API integration, Practical knowledge of Android Studio and Android SDK, Experience building UI with Jetpack Compose, Knowledge of MVVM, MVI or Clean Architecture, Experience publishing apps to Google Play Store, Experience with CI/CD pipelines, Knowledge of Android application security practices, Experience with Android Keystore and EncryptedSharedPreferences, Upper-intermediate (B2) English level 📃 Skills: Kotlin, Android, REST, AndroidStudio, AndroidSDK, JetpackCompose, MVVM, MVI, CleanArchitecture, CI/CD, GitLabCI, GitHubActions, Bitrise, AndroidKeystore, EncryptedSharedPreferences, GooglePlay 🏢 Description: Dla klienta z branży usług finansowych poszukujemy Senior Android Developera! Stawka: 110-120 zł/h netto+VAT B2B Praca 100% zdalna ZADANIA projektowanie i implementacja aplikacji mobilnej dla Android współpraca z zespołem w celu definiowania i tworzenia nowych funkcjonalności integracje wewnętrznego i zewnętrznego API (m.in. weryfikacja tożsamości, operacje płatnicze) realizacja i wsparcie testów kodu, wydajności, doświadczenia użytkownika usuwanie błędów, poprawa jakości i dbanie o najlepsze praktyki inżynierii oprogramowania aktywny udział w rozwoju zarówno pod względem technologicznym jak i produktowym WYMAGANIA 6-letnie doświadczenie w programowaniu dla Android (preferowany Kotlin) z potwierdzoną realizacją min. dwóch komercyjnych projektów, doświadczenie w tworzeniu aplikacji wykorzystujących REST API, praktyczna znajomość Android Studio, Android SDK oraz tworzenie interfejsów użytkownika w Jetpack Compose, dobra znajomość zagadnień związanych z inżynierią oprogramowania, w tym architektur rozproszonych, wzorców projektowych i podejść do projektowania aplikacji (np.: MVVM, MVI, Clean Architecture), a także projektowania i integracji z API,), doświadczenie w publikowaniu aplikacji w Google Play, w tym znajomość procesów CI/CD (np. GitLab CI, GitHub Actions, Bitrise), Znajomość dobrych praktyk bezpieczeństwa aplikacji na Androida, obejmujących m.in. ochronę danych użytkownika, bezpieczne przechowywanie informacji (Android Keystore, EncryptedSharedPreferences) oraz przeciwdziałanie atakom (np. reverse engineering, root detection). dbałość o jakość kodu i dokumentacji – pisanie czytelnego, testowalnego kodu zgodnie z dobrymi praktykami inżynierskimi oraz utrzymywanie aktualnej dokumentacji ułatwiającej pracę zespołu, doświadczenie związane z publikowaniem aplikacji w Google Play Store dobra znajomość angielskiego (minimum na poziomie B2) umożliwiająca współpracę z zespołami międzynarodowymi MILE WIDZIANE CO OFERUJEMY NA TYM PROJEKCIE? Współpracę w oparciu o umowę B2B i stawkę: 110-120 zł/h netto+VAT B2B Pracę 100% zdalną Wsparcie dedykowanego opiekuna. Po dołączeniu do speedapp, otrzymasz kontakt do dedykowanego opiekuna, który zadba, aby współpraca z nami oraz z klientem sprawiała Ci satysfakcję. Wydarzenia oraz spotkania integracyjne, a także udział w różnych inicjatywach np. sportowych. Dostęp do oferty benefitów (opieka medyczna, ubezpieczenie na życie, karta Multisport). JAK WYGLĄDA REKRUTACJA? Zgłoszenie : Zaaplikuj i prześlij swoje CV. Po weryfikacji aplikacji rekruter skontaktuje się telefonicznie z wybranymi kandydatami. Screening : Porozmawiaj z rekruterem speedapp o Twoim doświadczeniu . Kolejne etapy: Rekruter speedapp przedstawi Ci jak wygląda proces rekrutacji na dane stanowisko. Rekruter speedapp pozostanie z Tobą w kontakcie podczas całego procesu. O SPEEDAPP W speedapp wierzymy, że organizacja jest tak dobra jak tworzący ją ludzie. Jesteśmy zespołem ekspertów IT i innych specjalistów pracujących dla naszych klientów na całym świecie (m.in Izrael, Austria, USA). Wykraczamy daleko poza kategorię HR. Budujemy zespoły IT, a także pomagamy w ich zarządzaniu. 👉 10 lat doświadczenia 👉 +100 klientów na całym świecie +300 zatrudnień rocznie 💎 Jesteśmy laureatem prestiżowej nagrody Diamenty Forbes cztery lata z rzędu (2022, 2023, 2024, 2025), członkiem sieci Fast Growth Icons oraz FinTech Poland. MASZ PYTANIA? Skontaktuj się bezpośrednio z rekruterem odpowiedzialnym za ten proces. Iga Olszewska-Magnowska Senior IT Delivery Consultant iga.olszewska@speedapp.pl

🏢 Summary: B2B contract for a Senior Android Engineer to develop and maintain high‑impact mobile applications for a leading European media and entertainment provider. The role focuses on building scalable Android solutions for live sports, fan engagement and premium content platforms used by millions of users. It is a 6‑month remote project (with possible extension) starting ASAP. 🗂️ Requirements: Strong experience with Kotlin, Commercial experience with Jetpack Compose, Experience building responsive UIs for phones and tablets, Experience developing and maintaining mobile backend services, Knowledge of SOLID principles and mobile architecture patterns, Experience with Dagger or Hilt for Dependency Injection, Experience with Kotlin Coroutines, Experience with AndroidX Architecture Components, Experience with modular Android development, Experience with Firebase SDKs, Experience with CI/CD pipelines, Experience with observability and performance monitoring, Experience with Unit Testing and UI Testing, Proficiency with Git workflows, Practical experience working in Agile environments 📃 Skills: Kotlin, JetpackCompose, Android, AndroidX, Coroutines, RxJava, Dagger, Hilt, Firebase, Git, CI/CD, UnitTesting, UITesting, SOLID, Agile 🏢 Description: Project details: Role: Senior Android Engineer Duration: 6 months (with the possibility of further extension), Start: ASAP, the kick-off of the project is planned for April 2026, Contract: B2B, Equipment: Laptop provided by the customer, Work mode: 100% remote from Poland. About our customer: Our customer is a rapidly growing international software company that specialises in delivering media and entertainment projects. It is expanding its capabilities in the areas of the Internet of Things (IoT), cloud computing and tailored artificial intelligence (AI) solutions. They collaborate with global organisations to design and implement strategic infrastructures, content workflows, and consumer-facing digital applications. This role will enable you to support their ongoing European expansion while working on a high-impact digital product used by millions. About the project: Project for Large European Media & Entertainment Provider. You will work on behalf of the customer for one of Europe's leading media and entertainment companies, an organisation known for delivering premium content, live sports, award-winning news and innovative digital products to millions of users. The client operates in a fast-paced, innovation-driven environment and is continuously evolving its digital experiences across mobile, streaming and interactive platforms. Their teams are recognised for developing cutting-edge technology solutions that prioritise customer experience and large-scale impact. Your work will focus on mobile applications related to: Live sports experiences, Fan engagement features, Premium news and content experiences. Required Skills: Strong expertise in Kotlin and Jetpack Compose, Experience building responsive UIs for phones and tablets, Experience creating and maintaining mobile backend services, Solid understanding of SOLID principles and mobile architecture patterns, Dagger/Hilt for Dependency Injection, Kotlin Coroutines (must‑have); RxJava (nice‑to‑have), AndroidX Architecture Components, Experience with modular Android app development, Familiarity with Firebase SDKs, Experience with CI/CD pipelines , observability and performance monitoring, Strong background in Unit Testing and UI Testing, Excellent Git workflows, branching and commit practices, Practical understanding of Agile principles, ceremonies, planning and estimating. Responsibilities: Lead the development and maintenance of high‑quality Android applications serving millions of users, Implement scalable features using modern Android best practices and clean architecture, Collaborate with designers, backend developers and product owners across both the consultancy and the end client, Ensure performance, reliability and exceptional user experience across diverse Android devices, Participate in architectural decision-making and contribute to platform‑wide best practices, Maintain strong test coverage and contribute to continuous integration and delivery pipelines, Contribute to monitoring, observability and performance improvements, Coach and support other engineers when needed.

🏢 Summary: Android Developer role for a global banking project focused on building secure, scalable mobile applications using modern Android architecture and CI/CD practices. The position involves developing and maintaining Android apps in a stable international environment with a hybrid work model in Kraków. Strong emphasis on mobile security and production support readiness. 🗂️ Requirements: Minimum 3+ years of Android development experience, Strong knowledge of Kotlin, Experience with Jetpack Compose, Proficiency with Android SDK, Experience with CI/CD pipelines, Experience implementing MVVM or MVP architecture, Experience integrating REST services, Knowledge of mobile application security, Readiness for on-call and production support 📃 Skills: Kotlin, Jetpack, Compose, AndroidSDK, CICD, MVVM, MVP, REST, Security 🏢 Description: We are currently looking for a strong Android Developer to join a global project in the banking domain, working with a highly stable and well-established international environment. Android developer in Global Core Banking technology delivering secure, scalable mobile applications using modern Android architecture, frameworks and CI/CD practices. Hybrid model – Kraków (2 days per week from the office) Minimum 3+ years of Android development experience Kotlin, Jetpack Compose, Android SDK, CI/CD Pipelines, Mobile Application Security Develop Android applications, Implement MVVM/MVP architectures, Integrate REST services, Maintain CI/CD pipelines, Support production incidents Strong focus on mobile security and readiness for on-call or incident support. We offer: • Long-term cooperation on B2B contract • Stable project in the banking sector with international exposure • Opportunity to work with modern mobile technologies in a secure enterprise environment • Collaboration with experienced global engineering teams • Competitive and stable daily rate 📩 If you’re interested and meet the qualifications, please send your CV to Alina Pchelnikova at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: 6-month hybrid contract for an experienced Android Developer to design, build, and maintain high-performance Android applications within a collaborative team. The role focuses on developing new features, integrating APIs, optimizing performance, and ensuring code quality through best practices and reviews. Opportunity to contribute to impactful mobile projects with potential extension. 🗂️ Requirements: Minimum 5 years of Android development experience, Proficiency in Java, Proficiency in Kotlin, Experience with RESTful APIs, Experience with third-party libraries, Solid understanding of full mobile development life cycle, Knowledge of modern design patterns, Ability to design and develop high-performance Android applications, Experience in debugging and performance optimization 📃 Skills: Android, Java, Kotlin, REST, APIs, Libraries, DesignPatterns, MobileLifecycle 🏢 Description: We are seeking an experienced Android Developer with at least 5 years of experience in mobile application development. The ideal candidate will possess a strong background in building high-quality Android applications and have a solid understanding of the mobile ecosystem. This role offers an opportunity to contribute to exciting projects and further enhance your skills within a collaborative team environment. Bonus: Able to work during summer-time. Start: ASAP Length: 6 months with possible extension Location: Hybrid in Stockholm (must be located in Stockholm area) Main Responsibilities: As an Android Developer, your primary duties will include: Designing and developing high-performance Android applications. Collaborating with cross-functional teams to define and design new features. Ensuring the performance, quality, and responsiveness of applications. Identifying and fixing bugs to maintain an efficient system. Continuously discovering, evaluating, and implementing new technologies to maximize development efficiency. Participating in code reviews to ensure adherence to best practices. Maintaining up-to-date knowledge of mobile development trends. Key Requirements: Minimum 5 years of experience in Android development. Proficient in Java/Kotlin programming languages. Experience with RESTful APIs and third-party libraries. Solid understanding of the full mobile development life cycle. Familiarity with modern design patterns and best practices. Ability to work in a team-oriented environment. Strong problem-solving skills and attention to detail.

🏢 Summary: The offer is for a Senior Android Developer to design and build high-performance, scalable mobile applications in a client-facing, Agile environment. The role involves contributing to architecture, collaborating with cross-functional teams, and ensuring code quality, performance, and security. It targets experienced engineers with strong expertise in modern Android development and backend integration. 🗂️ Requirements: 5–9 years of Android development experience, Strong proficiency in Java, Strong proficiency in Kotlin, Deep knowledge of Android SDK, Experience with MVVM, Experience with Clean Architecture, Experience integrating RESTful APIs, Experience with Git, Experience with Gradle, Experience with CI/CD pipelines, Experience with unit testing, Experience with UI testing, Ability to participate in Agile development processes 📃 Skills: Android, Java, Kotlin, SDK, MVVM, CleanArchitecture, REST, Git, Gradle, CI/CD, JUnit, Espresso, Agile 🏢 Description: CAPCO POLAND SENIOR ANDROID DEVELOPER Capco Poland is a leading global technology and management consultancy, dedicated to driving digital transformation across the financial services industry. Our passion lies in helping our clients navigate the complexities of the financial world, and our expertise spans banking and payments, capital markets, wealth, and asset management. We pride ourselves on maintaining a nimble, agile, and entrepreneurial culture, and we are committed to growing our business by hiring top talent. ROLE OVERWIEW: We are currently looking for a Senior Android Developer to join our growing engineering team. If you are passionate about building high-quality mobile applications and enjoy working in a dynamic, client-facing environment—this role is for you. Key Responsibilities Design and develop high-performance, scalable Android applications using Java/Kotlin Collaborate closely with cross-functional teams including product owners, UX designers, and backend engineers Contribute to architectural decisions and technical strategyWrite clean, maintainable, and testable code following best practices Optimize applications for performance, reliability, and security Participate in code reviews and mentor junior developers Engage in Agile ceremonies and contribute to continuous improvement Essential Skills & Experience Solid experience as an Android Developer, with a strong focus on Java/Kotlin 5 - 9 years of experience in a similar position Deep understanding of Android SDK, architecture components, and modern development practices (MVVM, Clean Architecture) Experience with RESTful APIs and integration with backend services Familiarity with tools such as Git, Gradle, CI/CD pipelines Experience with testing frameworks and writing unit/UI tests Strong problem-solving skills and attention to detail Excellent communication skills and ability to work in an international team We offer a flexible collaboration model based on a B2B contract, with the opportunity to work on diverse projects.

🏢 Summary: Senior Android Developer role focused on building business-critical native Android applications in Kotlin for next-generation premium electric vehicles. The position combines hands-on development with technical ownership, including code reviews and mentoring, in a complex automotive environment. Strong emphasis on quality, performance, scalability, and integration-focused functionality. 🗂️ Requirements: 5+ years Android application development experience, Strong experience with native Android development in Kotlin, Solid understanding of Android development lifecycle, Strong knowledge of Kotlin Coroutines and asynchronous programming, Experience with software design patterns and modular architecture, Experience building business-critical and integration-focused features, Experience with unit testing and debugging, Ability to maintain high code quality standards, Experience working with Jira and Confluence, Upper-Intermediate English or higher 📃 Skills: Kotlin, Android, Coroutines, UnitTesting, Jira, Confluence, Embedded, Automotive 🏢 Description: About the project We are looking for a Senior Android Developer to join an innovative automotive project focused on next-generation electric mobility solutions . You will work with a European R&D center delivering premium digital products and technologies for some of the world’s leading automotive brands. The project is focused on building business-critical Android applications that support the future of premium electric vehicles . This is a great opportunity to join a fast-paced, engineering-driven environment where quality, performance, and reliability are essential. Your role As a Senior Android Developer , you will be responsible for designing and developing native Android applications in Kotlin , with a strong focus on business logic, integrations, code quality, and maintainability . This role combines hands-on development with technical ownership — including code reviews, mentoring, and cross-team collaboration in a complex automotive environment. Tech stack / environment Kotlin Native Android Kotlin Coroutines Unit testing Jira / Confluence Automotive / Embedded environment What you’ll do Design and develop native Android applications in Kotlin Build and maintain business-critical features and integration-related functionality Write clean, maintainable, and testable code Apply design patterns and best engineering practices to create scalable and well-structured solutions Collaborate with cross-functional teams in a complex product environment Perform code reviews and support high engineering standards Contribute to unit testing , bug fixing, and continuous quality improvements Help solve technical challenges and communicate solutions clearly Support and mentor other team members in mobile development What we’re looking for 5+ years of experience in Android application development Strong hands-on experience building native Android applications in Kotlin Solid understanding of the Android development lifecycle Strong knowledge of Kotlin Coroutines and asynchronous programming Experience writing maintainable, testable, and well-structured code Experience designing and developing business-critical and integration-focused functionality Good understanding of software design patterns and modular application architecture Experience with unit testing , debugging, and code quality practices Ability to work independently in a fast-paced environment Strong communication skills and ability to explain technical challenges and solutions clearly Experience working with Jira and Confluence Upper-Intermediate English or higher Nice to have Experience in the Embedded Automotive domain Experience with Head Unit Android Apps Experience in technically complex, multi-team product environments Perks and Benefits: Flexible work schedule Fixed financial bonus issued upfront on a quarterly basis, covering the average market price of private medical care and sport card - B2B contract Present on the occasion of birthday, wedding, child birth E-learning accounts for Coursera, O'Relly, Udemy Corporate language school

🏢 Summary: Senior Mobile Developer role focused on building and maintaining an enterprise-grade mobile SDK for passwordless authentication used globally. The position involves low-level mobile engineering, security and cryptography implementation, and performance optimization across Android and iOS platforms. The role includes architectural decision-making and close collaboration with backend teams in an international environment. 🗂️ Requirements: 6+ years commercial experience in mobile development (Android and/or iOS), Strong knowledge of Kotlin and/or Swift, Practical experience in developing mobile SDKs, Cross-platform experience with Android and iOS, Knowledge of OS internals (memory, threading, security model), Experience with cryptography or threat modeling, Experience in performance optimization, Knowledge of concurrency and asynchronous programming, Experience with CI/CD for mobile applications, English proficiency min. B2, Polish proficiency min. C1 📃 Skills: Kotlin, Swift, Android, iOS, SDK, Cryptography, Concurrency, CI/CD, Threading, Memory, Security, Git 🏢 Description: Cześć! Dla naszego klienta, międzynarodowej firmy z branży usług informatycznych, poszukujemy Senior Mobile Developera, który dołączy do zespołu budującego nowoczesną platformę passwordless authentication, wykorzystywaną na milionach urządzeń na całym świecie. To rozwiązanie klasy enterprise, używane m.in. w sektorze finansowym i bankowym, które odpowiada za bezpieczne zarządzanie tożsamością użytkowników. Projekt koncentruje się na rozwoju zaawansowanego mobile SDK, które stanowi warstwę bezpieczeństwa działającą bezpośrednio na urządzeniu użytkownika. Będziesz mieć okazję pracować blisko systemu operacyjnego, w obszarze security, wydajności i low-level engineeringu, tworząc produkt używany przez innych developerów. Wspólnie z zespołem będziesz podejmować kluczowe decyzje architektoniczne mające wpływ na dalszy rozwój produktu. Lokalizacja: Gdańsk Model pracy: Hybryda lub zdalnie (sporadyczne wizyty w biurze) Forma zatrudnienia: B2B lub umowa o pracę Wynagrodzenie: B2B: 169 - 190 PLN/h + VAT || UoP: 20750 - 23000 PLN brutto Zakres obowiązków: rozwój i utrzymanie mobilnego SDK (Android/iOS), projektowanie i implementacja rozwiązań z zakresu bezpieczeństwa i kryptografii, praca z pamięcią, wielowątkowością i optymalizacją wydajności, integracja z mechanizmami systemowymi (lifecycle, permissions, system services), analiza zmian w systemach operacyjnych i dostosowywanie SDK do nowych wersji platform, udział w projektowaniu rozwiązań, security reviews oraz podejmowaniu decyzji architektonicznych, ścisła współpraca z zespołami backendowymi, praca w środowisku międzynarodowym (język angielski na co dzień). Oczekiwania: 6+ lat doświadczenia komercyjnego w tworzeniu rozwiązań mobilnych (Android i/lub iOS), bardzo dobra znajomość Kotlin i/lub Swift, praktyczne doświadczenie w tworzeniu mobile SDK, elastyczność i gotowość do działania cross-platformowo (zarówno w środowisku Androidowym, jak i iOS), solidna wiedza z zakresu: OS internals (memory, threading, security model) oraz lifecycle i zarządzania zasobami, doświadczenie z kryptografią lub threat modelingiem, doświadczenie w optymalizacji wydajności, praktyczna wiedza z zakresu concurrency i programowania asynchronicznego, znajomość procesów CI/CD dla aplikacji mobilnych, bardzo dobra znajomość języka angielskiego (min. B2), płynna znajomość języka polskiego (min. C1), umiejętność samodzielnej pracy i branie odpowiedzialności za tworzony produkt, nastawienie na bycie częścią zespołu i otwartość na feedback. Mile widziane: doświadczenie cross-platform (np. Kotlin Multiplatform, React Native, Flutter), znajomość narzędzi do profilowania (np. Instruments, Perfetto, Systrace), doświadczenie z komponentami sprzętowymi (TEE, Secure Enclave, KeyStore), wiedza z zakresu mobile security (RASP, root/jailbreak detection, anti-tampering, itp.), podstawowa znajomość UX / procesów projektowania produktów cyfrowych. Oferujemy: realny wpływ na rozwój produktu używanego globalnie przez miliony użytkowników, dużą samodzielność oraz szerokie możliwości rozwoju, pracę w płaskiej strukturze i możliwość proponowania własnych rozwiązań, środowisko nastawione na jakość i konstruktywny feedback, wsparcie przełożonego, program mentoringowy i regularne spotkania 1on1, współpracę w oparciu o kontrakt B2B lub umowę o pracę, elastyczne godziny pracy (start między 7:00 a 10:00), nowoczesny sprzęt (MacBook + urządzenia testowe), integracje zespołowe i warsztaty techniczne, pakiet benefitów (prywatna opieka medyczna, MultiSport, lekcje angielskiego), pracę zdalną ze sporadycznymi wizytami w gdańskim biurze.